1

Ring-Master

System CB901

Guide toRing-Master System CB901

Ring-Master Communication &

Security Systems

Ring-Master

2

Ring-Master

System CB901

3

Ring-Master

System CB901

GUIDE TO RING-MASTER

COMMUNICATION

SYSTEM CB901

CONTENTS:

Chapter 1. Description Page 5

Chapter 2. Stations Page 15

Chapter 3. Features Page 21

Chapter 4. Installation Page 43

Chapter 5. Technical Specifications Page 47

WWT-114E Published July 99.

.

STENTO ASA and its subsidiaries assume no responsibility for any errors that may appear in itsdocumentation, or damages arising from the information in it. No information in this publication should be regardedas a warranty made by STENTO ASA.STENTO ASA reserves the right to make changes in specifications of the products detailed in thishandbook as well as the contents of this handbook at any time and without notice. This is consistent with ourpolicy of continuous product analysis and improvement.Product names mentioned in this publication may be trademarks. They are used only for identification.

4

Ring-Master

System CB901

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5

Ring-Master

System CB901Description

Ring-Master CB901 is an all-to-all direct speech system, controlled by a fully electroniccentral exchange. The brain of the system is a 16-bits microprocessor offering the usera wide selection of programmable features, designed to achieve flexibility and optimalefficiency in internal communication. The systemconfiguration (numbering plan, etc.) aswell as all features are simply programmed by using a dataterminal or PC (PersonalComputer)

The processorcard in the CB901 has built-in non-volatile memory. This secure that thememory of the system, where all programmed information, features and system configu-ration are stored, will be maintained for up to 10 years.

The modular structure of the central permits easy expansion. Each subscriber card ( 8subscriber positions) simply plugs in into the basic cardrack. A wide range of stationsare available, such as desk stations, surface and flush mounted stations, light andheavy industrial stations, explosionproof stations, etc.

The unique cabling concept allows for different cabling arrangements. Both the powersupply and controlunits can be mounted decentralized. Each station requires one singlepair for audio and signalling and one pair for power supply. It is not necessary to powerthe stations from the central, remote groups of stations can be supplied from localmains power units, to save cabling. In addition, the controlunit itself can be decentral-ized. Each controlunit (stage) for 240 subscribers can be installed anywhere in thesystem. The interconnection cabling between the master unit and the stages is ordinarytelephone wire or optical fibre.

The basic cardrack DP979, equipped for 96 subscribers measures only 256mm x570mm x 271mm (10.1" x 22.4" x 10.9"). Silent in operation, once fitted with its cover,the central can operate inconspicuously in almost any location.

The Ring-Master CB901 system is divided into 4 categories based on the numbercapacity:Single-Stage SystemCB901-1; up to maximum240 subscribersDouble-Stage SystemCB901-2; above 240 and upto 480 subscribersTriple-Stage System CB901-3; above 480 and up to 717subscribersMulti-Stage System CB901-M; above 717 up to max.7170 subscribers

In a Single-Stage System,CB901-1, the central unitconsists of a Basic

FAIL-SAFE POWERSUPPLY

SYSTEMDESCRIPTION

SUBSCRIBERCAPACITY, FROM2 to 7170.

1.1. GENERAL SYSTEM DESCRIPTION

CHAPTER 1. Description

SIMPLIFIED CABLING

COMPACT SIZE

SYSTEMCONFIGURATION

DP979/DP991

Ring-Master

DP980/DP992

SINGLE-STAGE SYSTEM, CB901-1.Up to 240 subscribers.

80 subscribers

160 subscribersRing-Master

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Ring-Master

System CB901

Cardrack DP979/DP991(CE certified) containing the Basic Cardset DP952E and Subscribercards DP978/DP990 (for display stations). There is room for max. 10 DP978’s, i.e. 80subscribers. If the number requirements exceed this, an additional Subscriber CardrackDP980/DP992 (CE certified) can be added, giving a maximum capacity of 240 subscribersin a single-stage system.

In a Double-Stage System, CB901-2, two Single-Stage Systems CB901-1 are intercon-nected by an 18-pair installation cable. This gives the system 8 interlinks between thestages. The maximum distance between the stages is 1.5 km. Each stage can have 240subscribers, giving a maximum capacity of 480 in a Double-Stage System.

The Triple-Stage System CB901-3 configuration consists of three Single-Stage SystemsCB901-1 interconnected by 18-pair installation cable in a triangle configuration. The systemis equipped for 8 interlinks between each stage. Maximum distance between the stages is1.5 km. Each stage can have 239 subscribers, giving a maximum capacity of 717 in aTriple-Stage System.

The Multi-Stage System CB901-M configuration consists of one control unit called DNC(Digital Network Controller) and up to 30 slave stages. The DNC unit has no subscriberconnections itself, all slaves are wired to this unit and it handles all traffic between them.For interconnection, fibre optic or standard 2-pair telephone cable can be used. Each slavestage contains maximum 239 call numbers, which gives a total capacity of 7170 subscrib-ers in a system. A Multi-Stage System CB901-M has 8 interlinks (audio channels) betweenthe DNC unit and each slave stage and the DNC unit itself has 1024 internal audio chan-nels.

Each slave-stage of 240 (239) call numbers is equipped with 15 internal links. Each DigitalNetwork Controller (DNC) is equipped with 1024 internal links.Between each slave-stage and the DNC unit 8 interlinks are available.

Stations for the CB901 systems can be classified in 2 main groups:MASTER STATIONS - (Ring-Master category AA) -

Stations that can initiate and receive calls.SUBSTATIONS - (Ring-Master category AB) -

Stations that can only receive calls or have a limited initiation capacity.

A wide range of stations can be supplied for the CB901 systems. This includes the MasterStation AA960, a loudspeaking desk station with a 8-character alphanumeric displaycontaining a variety of user information. AA960 is designed for desk use or wall mounting,using the neat wallbracket GF933. Station AA916 is a Master Station without display, butwith the same range of system features as AA960. Furthermore the AA903 for flush-mounting, two types of industrial master stations, explosionproof stations and a variety ofsubstations for desk and/or wall mounting are available. Microphone units for use togetherwith external loudspeakers can also be supplied.

All Master Stations have a full international keypad layout. This keypad is used both forinitiating calls and for dialling feature codes.To dial another subscriber, the initiator presses the first digit of the desired call number.Immediately a call tone is heard, indicating that a free link is obtained and that the remain-ing digits can be dialled. As soon as a connection is established, both parties hear awarning tone of approx. 1 second, and in both stations the red lamp is lit. The conversationcan continue until one of the parties presses the X-button to cancel the call. If the calledstation is in privacy mode, the caller will hear a warbling tone.

LINK CAPACITY

STATIONS ANDAUXILIARYEQUIPMENT

Description

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Ring-Master

System CB901

The Basic Cardrack DP979/DP991 can contain the following printed circuit boards (PCB’s):1. NFE1683 - Processor Card2. NFE1606 - Timing Control Card.3. NFE1519 - Switch Control Card.4. NFE1607 - Audio Control Card5-6. NFE1521 - 2 Link Cards for totally 15 links7. NFE1528 - Power Card.

Position 1 - 7 form the Basic Cardset DP952E8-17 NFE1625 (DP978)/NFE1813 (DP990-for display stations) - Subscriber

Cards, 8 subscribers on each card(10) NFE1626 (DP977) - Program Distribution Control Card.

The Subscriber Cardrack DP980/DP992 has room for addional subscriber cards:18-37 NFE1625 (DP978)/NFE1813 (DP990-for display stations) - Subscriber

Cards, 8 subscribers on each card.

Each stage in a CB901 system consists at least of one DP979/DP991 Basic Cardrack.If there are more than 96 subscribers in the stage, the Subscriber Cardrack DP980/DP992must be added. All PCB’s in the CB901 system are plug-in to simplify expansion. Eachsubscriber card DP978/DP990 is prepared for 8 subscribers.The Basic Cardrack DP979/DP991 has room for 10 Subscriber Cards DP978/DP990 = 80subscribers.The Subscriber Cardrack DP980/DP992 has room for further 20 Subscriber Cards DP978/DP990 = 160 subscribers. This adds up to 240 subscribers per stage and each stage has15 internal conversation channels (links). NOTE: If no Subscriber Cardrack is installed in asystem, the Basic Cardrack can be equipped with 12 subscriber cards (96 subscribers).In the CB901-3 and CB901-M systems, each slave has 239 subscribers.Whenever auxiliary equipment is connected that requires subscriber positions, the numberof subscriber positions will be reduced equally.

Note. The CE certified central units are: DP991, DP992 and the ventilation unit DP992.

THE CENTRALUNIT CB901

1 2 3 4 5 6 8 717

BASIC CARDRACK DP979/DP991

10 SUBSCRIBER CARDS DP978/DP990

18 19 20 21 8 37

SUBSCRIBER CARDRACK DP980/DP992

20 SUBSCRIBER CARDS DP978/DP990

22

Description

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Ring-Master

System CB901

THE BASICCARDSET DP952E This microprocessor controlled Basic Cardset consists of 7 cards, and in the following

we will give you a short explanation of each one:

Processor Card NFE1683This card contains the microprocessor (MC 68000 series), its program and memory. The512K bytes program, which controls all computer operations is located in 4 plug-inPROMs (Programmable Read Only Memories). This enables easy updating of thesystem’s specifications. The operating system is MTOS and the program is written inhigh level language C.

Timing Control Card NFE1606This card contains the main oscillator (10.7 MHz) and provides all timing signals in thecentral unit. In this way the system is synchronized all the way through, which mini-mizes noise generation in the audio links

Switch Control Card NFE1519This card sets up / disconnects links, directed by the processor. It handles thePAM(Pulse Amplitude Modulation) sampling control for all links. There are 32 time-slotsin the system. One time-slot is allocated for the subscriber scanner and one for the tonereceiver, leaving 30 time-slots for audio connections. This means that there is room for15 simultaneous audio links.

Audio Control Card NFE1607The voice control circuits (duplex and simplex) are located on this card, together withthe tone receiver for dialling and tone transmitter for optional features.

Link Card NFE1521 (x2)It connects the audio signals between the subscribers. Each subscriber is connected toone time-slot, and each of the two link cards can control 15 time-slots.

Power Card NFE1528It contains a switching power supply, synchronized with the main oscillator to minimizenoise. The circuits on the card transfer the incoming 24 V DC into the internal controlvoltages: +12V, -12V, +5V and -5V.

Subscriber Card NFE1625 (DP978)/NFE1813 (DP990)It terminates the lines (1-pair cable per station) for 8 subscribers and is the interfacecard between the stations and the central unit. The card splits up the audio/signallinginformation to/from the subscribers. Two models of the subscriber card are available.NFE1625 (DP978) operates with all types of stations, except AA960 with display, (willwork, but no indication in display). The model NFE1813 (DP990) must be used for fullfeature operation with the display station AA960. All other stations will also work withthis subscriber card. Both cards can be installed in the same system

One other PCB can be inserted in the Basic Cardrack DP979/DP991):

Program Distribution Control Card NFE1626 (DP977)It interfaces the internal communication system to external program sources and allowsthe subscribers to activate and connect program (music) channels as well as alarmchannels. The card contains circuits that enable each subscriber to individually choosefrom any of the program channels and to choose the desired volume. It also contains 2alarm channels, one with priority over the other. The alarm channels are activated byexternal contacts and spoken messages can be transmitted to all stations e.g. from atape recorder.

Description

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Ring-Master

System CB901

THE NUMBERINGPLAN

The numberíng plan of the central is flexible. Any station can have any call number withinthe choosen number series. A call number can have 2, 3, 4, 5 or 6 digits.As standard, the number series start with 10, 100, 1000, etc.Using the Service Terminal, you can determine any of the digits from 1 - 9 to be the firstdigit in a call number. Digits that are not used as first digit in a call number can be used forfeature codes. A feature code can have 1, 2, 3, 4, 5 or 6 digits.The number of digits in a call number is determined by switches on the Timing Control CardNFE1606.

Complete system configuration and feature programming is carried out using a specialsoftware program SVT (SerVice Terminal). The service terminal is interfaced via the RS 232port to the CPU card NFE1683. Remote service/programming is also possible via modems.Using a PC (Personal Computer), the system configuration/features can be stored on afloppy disk.The Ring-Master CB901 uses electronic crossconnections, i.e. all numbering or renumber-ing of extensions is made by onsite programming, without the need for time-consumingrewiring on a crossconnection frame.Programming/reprogramming of call numbers is also possible from any master station orfrom a single dedicated master station. This eliminates the need of the Service Terminal,but is intended for service personnel only.

STENTO ASA can supply a model of the System CB901 system to meet the CENELEC(Comité Européen de Normalisation Électrotechnique) requirements for EMC (ElectroMagnetic Compatibility). The equipment have been successfully tested by the accreditedDanish institute DELTA and complies with the standards:

EN-50081-1 for emission andEN-50082 for immunity

as prescribed in the "EMC Directive".The EMC certified CB901 system consists of the following parts:

DP991 Basic Cardrack (replacing DP979)DP992 Subscriber Cardrack (replacing DP980)DP993 Ventilation Unit (replacing DP986)

SYSTEMCONFIGURATION,FEATUREPROGRAMMING

CE CERTIFIEDCB901 CENTRALUNITS

Description

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Ring-Master

System CB901

DP979/DP991 (CE)Basic Cardrack

DP980/DP992 (CE)Subscriber Cardrack

DP952EBasic Cardset

The Basic Cardrack DP979 orDP991 can be mounted both on thewall and in a 19" rack. The modelDP991 is CE certified. The unitsconsist of the following elements:The cardrack DP979 or DP991;with room for totally 19 PCB’s, i.e. 7cards that form the Basic CardsetDP952E and a maximum of 12Subscriber Cards DP978/DP990.8 subscribers can be terminated toeach subscriber card. Consequentlythe maximum number of subscrib-ers in the DP979/DP991 is 96.Cable termination; the incominginstallation cable is terminated in- DP979: KRONE terminals thatform part of the BF927 (StrapSubscriber Card).- DP991: modular D-sub connectorswith filter adapters, (CE).Ventilation unit DP986 or DP993;- DP979: a front cover of plastic isfitted to the front of the cardrack.This cover can be replaced by theDP986 front cover that has 2 fansand that should be used in areaswhere the temperature in the centralroom exceeds 35 degrees C.- DP991: the ventilation unit DP993is installed on top of the DP991 unit.Dimensions: DP979: DP991:

height: 275 mm 264 mmwidth: 482 mm 483 mmdepth: 270 mm 300 mm

Colour: Pearl grey Aludine yellow

The Subscriber Cardrack DP980 orDP992 is used for expanding theCB901 system beyond 96 subscrib-ers. The model DP992 is CEcertified. The units can be mountedon the wall or in 19" racks andconsist of the following elements:The cardrack DP980 or DP992;with room for up to 20 SubscriberCards DP978/DP990. 8 subscriberscan be terminated to each sub-scriber card. Consequently 160subscribers can be connected tothe Cardrack DP980/DP992.Cable termination; the incominginstallation cable is terminated in- DP980: KRONE terminals thatform part of the BF927 (StrapSubscriber Card).- DP992: modular D-sub connectorswith filter adapters, (CE)..

Dimensions: DP980: DP992:height: 275 mm 264 mmwidth: 482 mm 483 mmdepth: 270 mm 300 mm

Colour: Pearl grey Aludine yellow

The brain of the CB901-1 system isthe Basic Cardset DP952E.The cards of this cardset, 7 in all,are inserted into the BasicCardrack DP979 or DP991 (CE).A DP952E consists of the followingcards:NFE1683, ProcessorcardNFE1606, Timing Control CardNFE1519, Switch Control CardNFE1607, Audio Control CardNFE1521, Link Card x 2NFE1528, Power Card

DP979/DP991

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DP980/DP992

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DP952E

Description

11

Ring-Master

System CB901

General system descriptionThe maximum number of subscribers in a Single-StageSystem CB901-1 is 240. To expand the system further,the next category is the Double-Stage System CB901-2, consisting of 2 pcs. Single-Stage Systems CB901-1.Each stage is equipped for 240 subscribers, giving theCB901-2 system a total of 480 subscribers.

Two different installation layouts are available:

A. ANALOG TRANSMISSION ON MULTI-PAIR CA-BLE.The two CB901-1 stages are interconnected with an 18-pair telephone installation cable which transfers dataand audio signals. The maximum distance between thestages can be 1.5 km (5000') using 0.6 mm copper wire(24 AWG)Data is interfaced via 20 mA current loop ports on theCPU card NFE1683. As standard there are 8 interlinksbetween the stages and audio is interfaced via optionalInterlink cards NFE1545 (DP963), one installed in eachstage.

B. DIGITAL 2 MBIT/S TRANSMISSION ON ONE PAIRFIBRE OPTIC OR TWO PAIR TWISTED DATACABLE.The two CB901-1 stages are interconnected with a onepair fibre optic cable or two pair twisted telephonecable. One printed circuit board, Digital NetworkInterface DP706, must be installed in each stage.NOTE: 2 Mbit/s transmission is available on softwareversion TX 4.3. and newer.

1. Fibre optic cable.Two types of fibre optic interfaces are available:

- short distance interface, DP703: 3 km.- long distance interface, DP704: 7.2 km.

2. Two-pair twisted cable.The distance can vary depending on the quality of thecable. A standard telephone cable of 120 nF/km willgive approx. 500 meters. Cable of better quality(47 nF/km) may work over a distance of up to 1.5 km.Use Digital Trunk Interface DP705.

Double-Stage System CB901-2 Up to 480 subscribers.

DOUBLE-STAGE SYSTEM, CB901-2. Up to 480 subscribers.

DP979/DP991

DP980/DP992

80 subscribers

160 subscribers

DP979/DP991

DP980/DP992

80 subscribers

160 subscribers

Interconnection:Analog: 18 pair telephone cable, distance < 1,5 kmDigital: 1 pair optic fibre, distance < 7,2 km or

2 pair data cable, distance < 1,5 km

CB901-1 CB901-1

Ring-Master

Ring-Master

Ring-Master

Ring-Master

Description

12

Ring-Master

System CB901

General system description.The maximum number of subscribers in a Double-StageSystem CB901-2 is 480. To expand the system further,the next category is the Triple-Stage System CB901-3,consisting of 3 pcs. Single-Stage Systems CB901-1,each of 239 subscribers giving a total of 717 subscrib-ers. Only 7 subscribers can be terminated to thesubscriber card NFE1625 (DP978) in position 40 of theSubscriber Cardrack DP980. (The last one must remainfree). For this reason each stage can only have max.239 subscribers. A modification must be made on theplug of the motherboard NFE1524A.

Two different installation layouts are available:

A. ANALOG TRANSMISSION ON MULTI-PAIR CA-BLE.The 3 CB901-1 systems are interconnected with an 18-pair telephone installation cable which transfers dataand audio signals in a triangle configuration. Themaximum distance between the stages is 1.5 km (5000ft.) using 0.6 mm copper wire (24 AWG). Data isinterfaced via 20 mA current loop ports on the CPUcard NFE1683. Audio is interfaced via optional Interlinkcards NFE1545, (DP963) 2 in each stage. There are 8audio channels between the stages.

B. DIGITAL 2 MBIT/S TRANSMISSION ON ONE PAIRFIBRE OPTIC OR TWO PAIR TWISTED DATACABLE.The three CB901-1 stages are interconnected with aone pair fibre optic cable or two pair twisted telephonecable in a triangle configuration. Two printed circuitboards, Digital Network Interface DP706, must beinstalled in each stage.NOTE: 2 Mbit/s transmission is available on softwareversion TX 4.3. and newer.The 3 CB901-1 systems are interconnected with onepair fibre optic cable or two pair twisted data cable in atriangle configuration.

1. Fibre optic cable.Two types of fibre optic interfaces are available:

- short distance interface, DP703: 3 km.- long distance interface, DP704: 7.2 km.

2. Two-pair twisted cable.The distance can vary depending on the quality of thecable. A standard telephone cable of 120 nF/km willgive approx. 500 meters. Cable of better quality(47 nF/km) may work over a distance of up to 1.5 km.Use Digital Trunk Interface DP705.

Triple-Stage System CB901-3 Up to 717 subscribers.

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DP980/DP992

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159 subscribers

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80 subscribers

159 subscribers

CB901-1 CB901-1

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80 subscribers

159 subscribers

CB901-1

DP979/DP991

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80 subscribers

TRIPLE- STAGE SYSTEM, CB901-3. Up to 717 subscribers.

Between each stage:Analog: 18 pair telephone cable, distance < 1,5 kmDigital: 1 pair optic fibre, distance < 7,2 km or

2 pair data cable, distance < 1,5 km

DP980/DP992

DP979/DP991

DP980/DP992

DP979/DP991

Description

13

Ring-Master

System CB901

Multi-Stage System CB 901-MUp to 7170 subscribers.

General system description.The maximum number of subscribers in a Triple-StageSystem CB901-3 is 717. To expand the system further,the next category is the Multi-Stage System CB901-M.This system consists of up to 30 stages, each with amax. capacity of 239 subscribers, thus totalling 7170subscribers. All the single stages CB901-1 are operat-ing in a network controlled by a Digital Network Control-ler (DNC). Between the stages and the DNC there isdigital 2 Mbit/s transmission. There are three possiblemeans of transmission:

- by Fibre Optic Cable (1 pair) or- by Two pair twisted Data Cable or- by Coaxial Cable

1. Fibre Optic Cable.Two types of fibre optic interfaces are available:

- short distance interface, DP703 : 3 km- long distance interface, DP704 : 7.2 km

2. Two pair twisted Data Cable.Use Digital Trunk Interface DP705.The distance can vary depending on the quality of thecable. A standard telephone cable of 120 nF/km willgive approx. 500 meters. Cable of better quality (47 nF/km) may work over a distance of up to 1.5 km.

3. Coaxial Cable.Coaxial Cable is normally used when the transmissionis via Multiplex equipment.

MULTI-STAGE SYSTEM, CB901-M. Up to 7170 subscribers.

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DP980/DP992R ing-M aster

80 abonnter.

159 subscribers

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CB901-1 CB901-1

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CB901-1

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CB901-1

DP979/DP991R ing-M aster

80 subscribers

DP701R ing-M aster

DNC, DIGITAL NETWORK CONTROLLER

Up to 30 CB901-1 stages

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80 subscribers

159 subscribers

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80 subscribers

159 subscribers

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159 subscribers

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80 subscribers

Between each stage and DNC:Digital interconnection, 1 pair optic fibre, distance < 7,2 km. Data cablel 2 pair, distance < 1,5 km.

DP980/DP992

DP979/DP991

DP980/DP992

DP979/DP991

DP980/DP992

DP979/DP991

Description

14

Ring-Master

System CB901

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Description

15

Ring-Master

System CB901

The stations are basically divided into two categories; Master Stations andSub Stations.Master Stations - able to make calls and to receive calls from any other call number.Sub Stations - for receiving calls only, from any master station. Some substations havekeypad with limited call access (station with auto-dialling and stations with directaccess feature).

A variety of models are available. These include the display master station AA960 andmaster station AA916 without display, (they are both one-piece units designed for deskor wall-mounting). Several industrial master stations are available: AA903/ AA905/AA906/ AA911/AA912 and AA961, substations AB911/ AB912/ AB92/ ex-proof stationAF903, vandal proof stations AB931/AB933, door stations AB931A/AB933A and remotemicrophone and loudspeaker units.

Each master station is equipped with a keyboard with full international standards,simple push-button dialling process places all the features at the user’s finger tips.

Making a call, the user presses the button corresponding to the first digit of thedesired call number. Dial access is virtually instantaneous since all station positions arescanned continuously. On receiving a steady dialling tone, the user continues dialling.

Call connection is indicated in both the initiating and the receiving station by a warn-ing tone and a station lamp which remains lit until the call is cancelled by either partypressing X. Should the receiving station be busy, the caller receives an intermittent tone.A continuous warbling tone indicates, that a station is placed in privacy, wishing toremain undisturbed. All Ring-Master stations are CE certified and complies with EMC Directive 89/336-EEC.

MODELS

CHAPTER 2. Stations

OPERATING THESTATION

Excellent sound reproduction.

Multi-colour LED for indications. Red duringconversation.

8 characters alpha-numeric display.- station's call number- station's ID text- time (12 or 24 hrs. indication)

Scroll keys for the display

Function key, F

Key to activate confidential mode.

Volume control keys, volume up/down

Standard international telephone keypad

"T-to-talk" optional manual control of calls.

Microphone mute key

"X-to-cancel" key.

Sensitive microphone.

Stations

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Ring-Master

System CB901

Dimensions: lenght: 270 mmwidth: 115 mmdepth: 40 mm

Weight: 360 gr.

AA903. Flush-mountedMaster Station

The AA903 is designed for normaluse as a flush-mounted unit with ametal backbox BF930. However, thefaceplate will also fit into a blackplastic housing BF936 for surfacemounting.

The unit features a brushedaluminium frontplate with speakerand microphone for normal hands-free speech. It also permits theconnection of a parallel speakerwhere additional output is required.

If confidential use is requested,an additional handset GD521 can beinstalled next to the AA903 station.

AA903 has an internal volumecontrol, permitting the installer of asystem to adjust each station tovarying acoustic conditions. Anyadjustment automatically attunesthe normal loudspeaking output andthe microphone sensitivity of theinstrument.

Internal screw terminals are usedfor termination of the installationcable.

6 01 2 3

4 5 6

7 8 9

T 0 X

AA905B. Light IndustrialMaster Station, Surface.

The AA905B is compact, splashand dust resistant - very strong inconstruction. It operates in thetemperature range from -30oC to+55oC. Its circuit board is speciallytreated with anti-corrosive lacquer.

AA905B is for surface mounting,and has a built-in microphone andspeaker. An aperture is provided forthe cord from extra handset(GD519) where required. Thisstation is ideally suited forapplications such as loading areas,garages, repair workshops,warehouses etc. where a low-cost,robust wall master station is oftenneeded.

AA905B has an internal volumecontrol, permitting the installer of asystem to adjust each station tovarying acoustic conditions. Anyadjustment automatically attunesthe normal loudspeaking output andthe microphone sensitivity of theinstrument.

Internal screw terminals are usedfor termination of the installationcable.

Dimensions: lenght: 200 mmwidth: 76 mmdepth: 42 mm

Weight: 750 gr.

1 2 3

4 5 6

7 8 9

T 0 X

AA905C. Light IndustrialMaster Station. Flush.

The AA905C is compact, splashand dust resistant - very strong inconstruction. It operates in thetemperature range from -30oC to+55oC. Its circuit board is speciallytreated with anti-corrosive lacquer.

AA905Cis for flush mounting, andhas a built-in microphone andspeaker. An aperture is provided forthe cord from extra handset(GD519) where required. Thisstation is ideally suited forapplications such as loading areas,garages, repair workshops,warehouses etc. where a low-cost,robust wall master station is oftenneeded.

AA905C has an internal volumecontrol, permitting the installer of asystem to adjust each station tovarying acoustic conditions. Anyadjustment automatically attunesthe normal loudspeaking output andthe microphone sensitivity of theinstrument.

Internal screw terminals are usedfor termination of the installationcable.

Dimensions: length: 250 mmwidth: 140 mmdepth: 40 mm

Weight: 730 gr.

1 2 3

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T 0 X

Stations

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System CB901

AA906. Heavy-DutyIndustrial Master Station

The AA906 is designed forinternal or external use, this heavystation is both dust and splash-resistant. The station shall alwaysby equipped with a suitable loud-speaker and/or handset (GD519).The extra speaker is usually a hornor re-entrant model. This will func-tion as both speaker and micro-phone, controlled by the “talk-back”circuit incorporated in the AA906.The loudspeaker must be of mini-mum 16 Ohm impedance. Thehandset GD519 provides softspeak-ing/confidential conversation. Bothsuitable loudspeaker and handsetGD519 must be ordered separately.The special membrane keypadprovides access to all features andfunctions, except for privacy (noprivacy switch).

Internal screw terminals are usedfor termination of the installationcable.

Dimensions: length: 280 mmwidth: 160 mmdepth: 102 mmdepth incl. handset: 165 mm

Weight: 2.1 kg.

AA911-F. Master Station w/polyester film frontplate

The AA911-F is designed fornormal use as a flush-mountedmaster station for hospitals etc.,where easy cleaning and wipe-downsterilization is required. Thestation's metal frontplate is fullycovered with a thin polyester film,protecting the station'sloudspeaker, microphone andkeypad. The keypad is of themembrane switch type. It has 13buttons for dialling and 1 button (M)for microphone cut-off (mute) whenpressed during a conversation. Thedigit buttons (0-9) are for callnumber dialling and the T-button isprovided for manual control of aconversation when desired. The X-button is used to cancel the call.The * (star) and # (hash) are featurebuttons. The audio output level canbe adjusted, increased ordecreased by the keys F is a feature button.

The AA911-F station permits theconnection of a parallel loudspeakerwhere additional output is required.The handset button is used forswitching to external loudspeaker

Dimensions: length: 290 mmwidth: 140 mmdepth: 61 mm

Weight: 1.1 kg

AA912/AA912-F. LightIndustrial Master Station

The Light Industrial MasterStation AA912 is a compact, splashand dust resistant unit and verystrong in construction. The unitfeatures a brushed aluminiumfrontplate mounted on a stainlesssteel wallbox. The station is ideallysuited for applications in loadingareas, garages, repair workshops,warehouses etc. The front has aspeaker and microphone for fullhandsfree voice-controlled (duplex)communication within a range ofapprox. 3-5 meters or 10-15 feet.The station's aluminium frontplate ispartly covered with a thin polyesterfilm, protecting the station's keypadand display, which makes it suitablein areas where easy cleaning andwipe-down sterilization is required.The keypad is of the membraneswitch type and contains a warninglamp (red LED), 14 buttons fordialling and 1 button (M) for micro-phone cut-off, (mute when pressedduring a conversation). The digitbuttons (0-9) are for call numberdialling and the T-button is providedfor manual control of a conversation.The X-button is used to cancel thecall. The * (star) and # (hash sign)buttons are feature buttons.

Dimensions: length: 250 mmwidth: 100 mmdepth: 62 mm

Weight: 1.1 kg.

1 23 4579T

680X

Stations

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System CB901

AA960/AA960A/AA960BAA960C. Desk/WallMaster Station w/display

The AA960 stations combines allthe essential functions needed foreffective internal communication inone compact unit: Loudspeakinghandsfree, softspeaking confidentialand total privacy. It is designed fordesk use or wall-mounting, using aneat wallbracket GF933. In addition,the 8-character alphanumericdisplay, scrollable through 4 win-dows to allow for messages up to32 characters, contains a variety ofuser information, such as volumestatus, microphone mute andsoftspeaking status.Furthermore, scrolling the displaywhen the station is not in use, itallows the user to choose betweenthe following information in thedisplay:- the station's call number- the station's programmed ID text- the time clock, 12 or 24 hour indication.The AA960 station has a featurekey "F", which allows for easyaccess to various preprogrammedfeatures incl. up to 20 direct diallingnumbers.Dimensions: lenght: 223 mm

width: 70 mmheight: 50 mm

Colours: AA960 - dark geyAA960A . whiteAA960B - dark grey CEAA960C - white CE

Weight: 305 gr.

AA916/AA916ADesk/Wall Master Station.

Although only the size andweight of a conventional telephonehandset, AA916 combines all theessential functions needed forefficient internal communication inone compact unit: loudspeakinghandsfree, softspeaking confidentialand total privacy. It is designed fordesk use or wall-mounting, using aneat wall bracket (GF933). On thedesk or on the wall, it permits theuser to converse with the caller,handsfree, from anywhere in theroom. When the station is used asa handset, the softspeaking key( ) has to be pressed once.For total privacy, the two scrollkeys ( ) have to bepressed simultaneously. A yellowflashing LED will indicate that thestation is put into privacy mode.Any incoming call is blocked, but isannounced by a tone, giving theuser the option of accepting the callby touching the 0-button.

The key M controls the Micro-phone Mute function, the T-buttonis used for manual control of aconversation and either party maypress the X-key to cancel.Dimensions: lenght: 223 mm

width: 70 mmheight: 50 mm

Colours: AA916 - dark gey CEAA916A . white CE

Weight: 265 gr.

F

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intercom

AA961/AA961-F. LightIndustrial Master Stationw/display

The Light Industrial MasterStation AA961 is a compact, splashand dust resistant unit and verystrong in construction. The unitfeatures a brushed aluminiumfrontplate mounted on a stainlesssteel wallbox.

The front has a speaker andmicrophone for normal handsfreespeech within a range of approx. 3-5meters or 10-15 feet. The station'saluminium frontplate is partlycovered with a thin polyester film,protecting the station's keypad anddisplay, which makes it suitable inareas where easy cleaning andwipe-down sterilization is required.The keypad is of the membraneswitch type.

In addition, the 8-characteralphanumeric display, scrollablethrough 4 windows to allow formessages up to 32 characters.When the station is not in use, itallows for the following informationto be displayed:a) the station’s call number,b) the station’s programmed ID text (e.g. room number, name of the user, etc.) orc) the time clock showing 12 or 24 hour indication.Dimensions: length: 250 mm

width: 100 mmdepth: 62 mm

Weight: 1.1 kg

Stations

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Ring-Master

System CB901

Dimensions: l: 180 mm, w: 90 mm,d: 58 mm

Weigh: 800 gr.

Dimensions: length: 180 mmwidth: 90 mmdepth: 58 mm

Weight: 800 gr.

AE111. VISICALLDirect Dialling Unit

The Ring-Master AE 111 VISI-CALL unit is used in conjunctionwith the master station AA 904. Theunit has 32 “name call” keys thatcan be programmed for directdialling. This means that by press-ing a single key, a complete callnumber or dialling code isautomatically transmitted from theVisicall unit to the centralexchange. This function isparticularly useful in systems withextra features using longer diallingcodes, such as absent staffregistration, radio paging, inter-system tie-lines, programmedistribution, alarm circuits, etc.

All the dialling codes areprogrammed directly by the Visicallunit’s keypad, using the “P” button(programming). The unit has a built-in rechargeable battery which willkeep the program intact forapproximately one month in theevent of mains power failure.

AE111 has an alpha numericdisplay with 2 lines each of 16characters. When initiating andreceiving a call, the other party's callnumber is displayed.

Colour: blackDimensions: lenght: 320 mm

width: 220 mmdepth: 70 mm

Weight: 1.9 kg.

DOOR 12

1 2 3

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7 8 9

T 0 X

60

P M

AB931/-F/AB933/-FVandal proof stations

The Substations AB931/AB933/AB931-F/AB933-F are compact,splash and dust resistant units andvery strong in construction. They aremade in stainless steel and thesurface mounting models AB931/AB933 are equipped with a 2.0 mmthick frontplate and the flushmounting models AB931-F/AB933-Fhave 3.0 mm.

A special construction ensuresoptimal protection of the push-button, microphone and loud-speaker. They are ideally suited forapplications in correctional institu-tions, prisons, police stations, carparks, subway stations etc. Sincethe station's circuit boards arespecially treated with anti-corrosivelacquer, they are also suitable inareas like outside loading areas,garages, repair workshops, gateentries, etc. The housing is fittedwith vandal-resistant lockingscrews.

The Substation AB931/AB931-Fis equipped with one push buttonand AB933/AB933-F has 3 pushbuttons to activate the "DirectAccess" or "Direct Dialling" feature.

The Doorstations AB931A/AB931A-F/AB933A/AB933A-F arecompact, splash and dust resistantunits and very strong in construc-tion. The stations are made instainless steel with a 1.5 mm thickfrontplate. The -F models are forflush mounting.

A special construction ensuresoptimal protection of the push-button, microphone andloudspeaker. They are ideally suitedfor applications in corridors, carparks, subway stations etc. Sincethe station's circuit boards arespecially treated with anti-corrosivelacquer, they are also suitable inareas like outside loading areas,garages, repair workshops, gateentries, etc.

The Substation AB931A/AB931A-F is equipped with onepush button and AB933A/AB933A-Fhas 3 push buttons to activate the"Direct Access" or "Direct Dialling"feature. The three buttons onAB933A/AB933A-F are individuallyprogrammable to call any station (orfeature code) in the system.

AB931A/-FAB933A/-FDoor stations

Stations

20

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System CB901

AF103. Explosion ProofMaster Station

The Explosion Proof StationAF103 is a soft speaking modelcertified for the highest explosionand ignition class, IIC T6. It isapproved for use on sites withpotentially explosive areas, forexample on chemical plants orrefineries, at docks, on vessels oroil platforms, or other places. Thetelephone housing is made ofshock- and impact-resistant glass-fibre reinforced polyester, and isunaffected by acids, lyes, humidityand greases. This and the use ofcorrosion-proof screws, shafts, boltsetc. (made e.g. of V4A stainlesssteel), is of great advantage inenvironments of high humidity.The telephone unit is connected tothe Line Interface Unit HD941 (2wires), which is located outside thehazardous area. This unit is termi-nated to the Ring-Master centralunit as an ordinary subscriber (4wires). If loudspeaking function is re-quired the Talk-Back Unit BC934and an explosion proof loudspeakertype AC235 must be connected(ordered separately). The loud-speaker will be installed togetherwith the telephone unit in thehazardous area and will alsooperate as a microphone. TheBC934 will be beside the TelephoneInterface Unit HD937.

1 2 3

4 5 6

7 8 9

* 0 #

GD521. Handset ModuleSurface mounting

The Handset Module can beconnected to a central as a sepa-rate sub-station. Alternatively it canbe connected between a central anda station. There are a number ofjumpers which must be configuredaccording to the application forcorrect operation to be achieved.This configuration is done by theinstallation contractor:1. The Handset Module Connectedbetween a Station and the Central.2. Handset Module Used as aSeparate Substation.3. The Handset Module Used as aSeparate Station without a Central.

RC104/RC104-F. HealthCare Station

The Health Care Stations RC104/RC104-F are compact, splash anddust resistant units and very strongin construction. The units feature abrushed aluminium front platemounted on a stainless steelwallbox. The stations are developedfor health care applications, innursing homes, senior citizenhomes etc. The RC104 surface model isdelivered complete with the backboxBF961. The RC104-F is for flush mountingand comes with a light backbox,MKE3078, for EMC protection.When an optional backbox isneeded for concrete mounting, theunit BF964 must be ordered. The station's aluminium frontplateis partly covered with a thin polyes-ter film, protecting the station'skeypad and display, which makes itsuitable in areas where easycleaning and wipe-down sterilizationis required. The keypad is of themembrane switch type. In addition, the 8-characteralphanumeric display contains avariety of user information, such asthe patient identification (roomnumber), present marked nurse, IDof programme distribution channeland ID of call in progress.

Stations

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System CB901

CHAPTER 3. Features.Note. The description of the features in this handbookis based on the software version TX5.0. The perform-ance of a feature in the display station AA960/aa961,can differ from the rest of the Ring-Master stationswhich have no display or keys F, *,# and M.Specific display station operation is indicated with italicfont.

Station in IdleWhen station not in use, the LED is blank.Display station:In the display, the ID TEXT is the idle info.To scroll for CALL NO and TIME, press the scroll keys.To toggle 12 and 24 hrs., press the "T" button

LoudspeakingAllows any subscriber to direct a conversation in

loudspeaking (voice switching duplex) mode.The duration of a conversation is by default unlimited,but can be restricted using the service terminal (SVTprogramming). This applies to any conversation,loudspeaking or confidential.

Display station:When making a call, the numbers dialled are shown inthe display.When connected, the called stations's ID TEXT isdisplayed.Receiving a call, the caller's ID TEXT is displayed.To see the CALL NO and TIME, use the scroll keys.To adjust volume, press volume keys or .

The station has 16 levels, indicated by 5 strokes indisplay.

ConfidentialAt any time during a call, either one or both of the

parties can pick up their station, pressing the handsetkey, and use the set in the same way as aconventional telephone handset, to carry out a confi-dential (softspeaking) conversation. As soon as bothstations in a connection are used in this mode thesystem operates in full duplex, that is, both parties canspeak and listen simultaneously as in a conventionaltelephone conversation.

To revert to loudspeaking, press the handset keyagain.

Microphone CutoffAllows a user to say something confidential to a

person in the same room without this remark beingheard by the other party.To temporarily disconnect the station microphone,press down the M key (mute). The letter M will bedisplayed. Release the key to continue in loudspeakingmode. If the M-button is pressed twice (within 0,4 sec.)the microphone mute function is locked into mutemode. To reset, tap the M-button once.For stations AA903 and AA905, press down the privacyswitch temporarily. The privacy switch can be in anyposition,- black or orange plate.

Manual speech control/T-Simplex mode When calling to or from exceptionally noisy areas, auser can press down the T-button, to obtain manualcontrol of the speech direction. Simply press the T-button to talk and release to listen. Either party mayuse this feature at any time during a call.If one party in a conversation has pressed his T-buttonand then the other party presses his T-button, the ruleis that the last one who presses his T-button overridesthe first.To revert to handsfree, tap the T-button for less than400 ms.This feature does not function over tie-lines or betweenstages in multi-stage configurations.

PrivacyAny subscriber in the system can block incoming

calls by switching the station into privacy mode.Station AA916: press both scroll keys simultaneously.Station AA960: dial the feature code for privacy(default F1 or 951).Stations AA903/AA905: slide the privacy switch on thestation (exposing a bright orange plate).Privacy has no effect on outgoing calls.The system has 2 different privacy modes:Privacy A:Subscriber B switches his station to privacy mode.Subscriber A calls B. B hears a short privacy tone(warbling tone). A hears a “ringing tone” (as a tele-phone) for about 12 secs.To accept the call B can press 0-button within 12 sec.,A and B get a warning tone and a normal conversationis set up. If B does not press 0 within 12 sec. then A iscancelled.

Features

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Ring-Master

System CB901

Service Terminal.Display Station:When hurry up is activated, the text HURRY UP will bedisplayed in the called station. The LED flashes red.

Alarm FeatureTwo separate alarm channels can broadcast high

priority information (such as hazard warnings etc..) toall stations in the system.The feature is implemented completely in hardware,there is no software control.Triggering of the alarm channels (dry contact), andcontent of the alarm message is sent via externalequipment (e.g. tape recorder etc.).Both alarm channels have priority over programmedistribution channels, All Call, Group Calls, privacy andbusy stations. Furthermore, alarm channel no. 1 haspriority over alarm channel no. 2. Any existing connec-tions are not cancelled, the alarm is superimposed overexisting conversations.

Multichannel Programme DistributionAny user can dial into any of a max. of 8 programme

channels (e.g. background music, radio programmesetc.) and select the desired output volume.The following sequence must be followed to initiate aprogramme channel:- First dial the feature code (default 98)- Dial digit 1 to 8 for the required channel- Dial digit 1 to 4 for the required volumeThe desired programme channel is connected. Tochange programme or volume (or both), dial the code(no need to dial X to cancel first).To cancel a programme channel, press X.The programme channel will automatically be sus-pended if the station is called or makes call, but isrestored when the call is cancelled.

Display Station:The ID TEXT for the selected program channel will bedisplayed. To step the channels, press a prepro-grammed feature code (default F9 or 949).

Data TransmissionAllows a subscriber to communicate via DTMF with a

device which is driven by DTMF tones (e.g. remotecontrol device/decoder).The user calls the remote control device (which isassigned an access code). Any subsequent keypressed will be converted to DTMF and transmitted tothe receiver. The call is cancelled with a feature code.The position of all remote control stations in a systemmust be programmed with the Service Terminal, other-wise the system assumes these positions are con-nected to a standard intercom station.

When the call is cancelled, B remains in privacy aslong as the station is in privacy mode.Privacy A is provided as default in the system.Privacy B:As in mode A, except that the tone in both stations is a“ringing tone” (as a telephone) which is heard in bothstations for about 12 seconds.Privacy B is individually programmable to any sub-scriber in the system.Stations can be programmed to NEVER be in privacy,or ALWAYS in privacy. The selected privacy mode isignored. Valid to both privacy categories.

Display station:To activate the Privacy mode, press the function key Fplus 1, F1 (or the default code 951). PRIVACY isdisplayed.To open for incoming calls again, dial F1 again (or 951).Calling a station in privacy mode, the text PRIVACY,called station's ID TEXT and CALL NO auto scroll.In the receiving station, the LED lights red and CALL RQ(call request) caller's ID TEXT and CALL NO autoscroll.

Camp OnA caller can automatically camp on to a busy station

for a maximum of 15 seconds. If the extension be-comes free within this period the caller will be automati-cally connected, otherwise the caller is automaticallycancelled.If several parties try to camp on to the same extension,the second will get a busy tone for two intervals andthen be cancelled. This indicates that someone else isin front in the queue. There is no restriction on camp onin the system,- only link capacity.

Display Station:Calling a busy station, BUSY, the called station's IDTEXT and CALL NO are displayed, the 3 windowsautoscroll.In the called station, CALL RQ (call request), the callingstation's ID TEXT and CALL NO will autoscroll. The LEDflashes red.

Hurry UpWhen calling a busy station, the caller can indicate

that he is waiting by injecting a “hurry up” tone in thebusy station. A is connected to B. C calls A. When thecaller C gets the busy tone, he can press 0 buttonwithin 12 secs. and the hurry up tone is heard in A. Ifthe connection is finished within 12 secs. then C isconnected to A and both A and C get a warning tone. Ifthe conversation does not finish within 12 secs, then Ccan press 0 again (and subsequently as many times asrequired) to obtain the 12 secs. “camp on” (each time Cpresses 0 an auto timer is reset).All stations have access to hurry up, except prioritystations, which will cancel the blocking conversation.It is possible to enable/disable the feature via the

Features

23

Ring-Master

System CB901

Direct AccessSome substations have only a single push button (for

alarm, ring, door etc.). When subscriber A pressingthis button a call or a call request is made to a prepro-grammed receiver B.This feature applies to stations with “CALL” button (e.g.AB921/AB921-F/AB931/AB931-F/AB931A/AB931A-For specially modified stations). This feature also appliesto the Master Display Station AA960, the Alarm Inputfeature.There is no limitation to the number of direct accessstations in the system. There is no limitation to whichother station the call gives access to.If the receiving station is in privacy, and does notanswer with the 0-button, then the system canautomatically (after 15 secs or the timeout isprogrammable with the SVT programming software)send a paging output and then cancel. This is valid ifthe receiver is programmed with paging feature.If the receiving station is a Central Answering Service(CAS) station then the caller will hear a ringing toneuntil answered.When a direct access station is programmed with aspecial “always page” privilege, then pressing the DirectAccess button always results in a pager output. Thiscan also be combined with the privilege preprogrammedpager data, then this data is sent to the pagers’ displayinstead of call number.

Direct DiallingIt is possible to program keys 0 to 9 and F0 to F9 of

the AA960/AA961 stations' keypad to dial 20 frequentlyused numbers (call numbers or feature codes) with one/two key-stroke(s).

When a programmed key is pressed, a dial tone isheard as normal. If no other key is pressed within 1second, then the programmed number is automaticallydialled. If a second key is pressed within 1 second,then a normal dial sequence can take place.Programming:

Programming of the direct dialling data, relevant tothe different keys, can be made both by the stationitself or from the SVT central software programming.

To program the Direct Dialling feature, dial thefeature code F* (or 914). Then dial the table number 1or 3 (1 for keys 0 to 9,Fand - 3 for key-kombination Fplus keys 0 to 9 plus 9) followed by the key number (0-9) and the required data (call number, feature codeetc.). In the display the following info text is displayed:TABLE - KEY NO - NUMBER.

End programming with the X key.

Example: Programming the sequence:F* 1 3 1002 Xwill put call number 1002 on key 3.F* 3 5 1204 Xwill put call number 1204 on key-combination Fplus 5, (F5).

Display Station:The feature code to start programming the keys is F*(same as 914). The following info text is displayed:TABLE - KEY NO - NUMBER..

PriorityStations can be defined as “priority” stations ena-

bling them to override a called station which is busy ina conversation or in privacy, resulting in a duplexconnection with the called station.The priority station receives the busy tone, then dials 0.The existing call is cancelled and the priority station isconnected to the called station in a normal duplexconversation.

Connections set up normally (without using “0”option) can be cancelled by other priority stations.Connections set up by use of priority cannot be can-celled by other priority stations (the connection has“priority status”).There is no limit to the number of priority stations in asystem.

Priority stations must be programmed using theService Terminal, otherwise no station has priority.Priority cannot cancel a conference call or a call-connection in progress.At any time during a normal call, a connection canobtain a “priority status” when one of the priority callerspresses 0.

All CallAllows general simplex messages to be broadcasted

to every station in the system. The All Call is initiatedby an authorized subscriber dialling the all call number.If an All Call is cancelled with 8 (instead of X) oneanswer back can be made to the All Call initiator bydialling 90 (no time limitation). If the initiator presses 90first, the reply feature is cancelled.

Any call number can be programmed as accessnumber for the All Call. Only preprogrammed stations inthe system have access to the feature, but any callnumber can be given this possibility.

Any call number can be programmed to have the “allcall x-out” function. A receiver of All Call with thisprivilege can cancel the incoming all call message bypressing the X-button.

The duration of the All Call is standard limited to 30seconds, but can be changed with the Service Termi-nal.

Features

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System CB901

Display Station:In the station initiating group-call, the remaining speechTIME will be displayed, (count down).

HuntEach station in the system is allowed one Hunt

number to which the central automatically hunts if thestation is busy or in privacy. Several stations can thusbe linked together, so that the search continues until afree station is found.The search stops after a maximum of 10 hunts havebeen made. The search also stops if the hunt returns tothe caller before 10 hunts have been made.

All members of a group hunting and a chain identifiermust be programmed with the Service Terminal. If thefacility is not SVT programmed this feature is disabled.

Display Station:In the calling station the user will see HUNT, the CALLNO, the ID TEXT and CALL NO for the hunted station. All4 windows will scroll, window no. 2 (called number) willflash fast.If Advanced Display Info privilege is not programmedfor the subscriber, window 1 (HUNT) and 2 (CALL NO)will not be displayed.

ConferenceBringing in one at a time, anyone can dial up to 4

other extensions to set up a minimum of 3-party,maximum 5-party conference call (5 is default).Subscriber A dials B and a connection is established.A then dials C and a 3-party conference is established.A can similarly dial up to 2 more subscribers.The conference can proceed either in hands free orconfidential mode, and the called extensions can freelyleave the conference at any time. Only the initiator to aconference can bring in new members to the confer-ence.

The initiator can disconnect the last called extensionby pressing X once. Pressing once more, the next(backwise) will be cancelled. Pressing X twice within 1second cancels the complete conference call.Any called extension may freely leave the conferencecall by pressing X. When anyone is joining or leaving aconference, the initiator will hear a warning tone.All stations can set up a conference. A maximum of 8conference calls can take place simultaneously, orlimited to the link capacity (30 timeslots).

A priority station cannot cancel a member of aconference call.

If all stations in a conference call are used in confi-dential mode, the call is still in voice switching mode(not in full duplex as in an ordinary call).If any of the conference parties uses the T-button forSimplex mode (or to interrupt a conversation between

Programming of All Call access code, and stationswith All Call initiative access, is Service Terminalprogrammable. There are no default All Call numbers. Ifthe feature is not programmed, this feature is disabled.

It is possible to program “restricted All Call”. Thismeans that any one group (as in Group Call, nextsection) can be excluded from the All Call (“negativegroup”). As there are up to 64 groups in the system,there can be one All Call per negative group plus one allcall for all groups, giving max. of 65 all call accessgroups.

An All Call overrides all other calls in the systemexcept alarm channels. Existing calls at the time of theAll Call are not cancelled.Only one All- or Group Call can be made in the systemat the same time.

Display Station:In the station initiating All Call, the remaining speechTIME will be displayed, (count down).

Group CallAllows a subscriber to call a group of stations in the

system, with a single code access, and to broadcast asimplex message. The Group Call is initiated by anauthorized subscriber dialling the group access code.If a Group Call is cancelled with 8 (instead of X) oneanswer back can be made to the Group Call initiator bydialling 90 (no time limitation). If the initiator presses90, then the reply feature is cancelled.

The system can have up to 64 Group Call groups.Any call number can be programmed as accessnumber for the Group Call. Only preprogrammedstations in the system have access to the feature, butany call number can be given this possibility. There isno limit to the number of members in each of the 64groups, and a call number can be member of up to 64groups.

The duration of a Group Call is standard limited to 30seconds, but can be changed with the Service Termi-nal.

Programming of Group Call access codes, andstations with Group Call initiative access, is ServiceTerminal programmable. There are no default group callnumbers. If the feature is not programmed, this featureis disabled.

A Group Call overrides all other calls in the systemexcept alarm channels and all call, but no existing callsare cancelled.

Any one of the 64 groups can be a “negative” groupin an All Call, so that the All Call includes all subscrib-ers in the system except those in the specified group.

Any call number can be programmed to have the“group call x-out” function. A receiver of Group Call withthis privilege can cancel the incoming Group Callmessage by pressing the X-button.

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two others) this station will be heard by all the others.When the T-button is released, the conference goesautomatically back to duplex.The feature is enabled/disabled from the ServiceTerminal. The maximum number of participants in aconference (3 - 30) is terminal programmable, thepreprogrammed figure is 5.

Display Station:In the station initiating conference, CONF will bedisplayed.In the receiving stations, CONF, caller's ID TEXT andCALL NO will autoscroll.

Call ForwardThis feature gives a subscriber A the ability to route

an incoming caller C to another station B. There exist 3types of call forward:

Mode 1. At own station A, transfer A to anotherstation B.At own station A, forward A to another station B. Adials the facility code F5 or 910 plus B’s call number.This feature code can be dialled either when station isin idle (no call established) or while in duplex connec-tion. A short acceptance tone is heard in A’s setimmediately. From then on, short information tones(repetitive) are heard in A station at intervals of 5minutes. Any call to A will now be routed to B.

Mode 2. At another station B, transfer A to B.At another station B, forward A to B. B dials the facilitycode (911) plus A’s call number. A short acceptancetone is heard in B’s set immediately. From then on,short information tones (repetitive) are heard in Astation at intervals of 5 minutes. Any call to A will nowbe routed to B.

Mode 3. At another station B, transfer A to C.At another station B, forward A to C. B dials the facilitycode (912) plus A’s call number and then C’s number,(C’s number must be dialled within 12 seconds). Ashort acceptance tone is heard in B’s set immediately.From then on, short information tones (repetitive) areheard in A’s station at intervals of 5 minutes. Any callto A will now be routed to C.

The repetitive information tone (every 5 min) can bedisabled at any time after the transfer by switching theset to privacy.

More than one subscriber is allowed to forward to thesame station. To cancel the call forward:

1. Dial F6 or 913 from A’s station (followed by X orwait 5 seconds). A’s station then receives ashort hurry up tone as an acknowledgement.

2. Dial F6 or 913 999 from B’s station followed byA’s number (within 5 seconds). B’s station thenreceives a short hurry up tone as an acknow-ledgement.

In both cases 1 and 2 a hurry up tone is heard after

dialling F6 or 913 as a prompt for the optional callnumber.

Display Station:To activate the Call Forward feature, press F5 (same as910 in mode 1). CALL FWD and TO NUM will bedisplayed.Dial the call no to forward to.The display will show, CALL FWD and forwarded CALLNO.When calling a forwarded station the display will autoscroll:CALL FWD, the called CALL NO, the ID TEXT andCALL NO forwarded to.Window no. 2, the called number will flash fast.To cancel the call forward, press F6X (same as 913X).If Advanced Display Info privilege is not SVT pro-grammed for the subscriber, window 1 (CALL FWD) and2 (CALL NO) will not be displayed.

Secretary TransferThis feature transfers calls initiated to the boss over

to the secretary. Unlike CALL FORWARD the boss andsecretary can confer in full duplex while incoming calleris kept on hold.

The secretary number for the boss is programmedusing the Service Terminal or by the boss dialling thefeature code. The feature code for both is 935 and tocancel the feature again, 936.

Caller A calls to the boss, but instead a connectionbetween A and the secretary is established, (both getwarning tones). When the secretary presses the 0-button, A is put on hold (A gets a short privacy toneand then no audio, but the station remains on). Thesecretary establishes a full duplex connection with theboss (both get a warning tone).

The secretary can now toggle full duplex conversa-tion between boss and caller A by pressing 0-button.Each time the secretary presses 0, a full duplexconversation is established, both parties get a warningtone. The remaining party gets a hold tone if he is thecaller A, or is simply cancelled with no tone if he is theboss. There is no limit to the number of times thesecretary presses 0.

If A cancels while on hold, no further connection canbe made between secretary and caller A, using the 0-button. The secretary puts the incoming caller Athrough to the boss by pressing X instead of 0 while induplex connection with the boss. This causes thesecretary to be cancelled (no tone). The caller A andthe boss get warning tones and a full duplex connectionis established.

If the boss does not wish to accept A’s call, then hecan press X while in full duplex with the secretary, orthe secretary can press X while in full duplex with A.Several stations can forward to the same secretary.

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Display Station:To activate the Secretary Transfer feature dial thefeature code 935 on the Boss' station. SECRETRY andinfo text TO NUM will auto-scroll. Dial the call number forthe required secretary.In the calling station, the caller will see the following 4windows auto-scroll: SECRETRY, the boss' CALL NO,secretary's ID TEXT and NUMBER.When the secretary is routed to the boss (caller onHOLD) the display will autoscroll SECRETRY, boss' IDTEXT and NUMBER.

Call TransferSubscribers in the system can call a certain number

(the transfer centre) and request for connection toanother extension.Subscriber A calls B (the transfer centre). A asks for aconnection to subscriber C. B dials the feature codefollowed by C’s number. All three stations are nowconnected, but there is only audio connection betweenB and C (A is put on hold and gets a continuous holdtone). The transfer centre (B) can now establish aconnection between A and C and leave the connectionby dialling X.

If the transfer centre (B) decides not to make theconnection between A and C, he dials the feature codeand C is cancelled, and B is reconnected to A.

The feature is provided as default, but can be disa-bled using the Service Terminal. The default featurecode for Call Transfer is 916.

Display Station:To activate the Call Transfer, dial the feature code 916.TRANSFER and TO NUM is displayed.Dial the call number to transfer to.

Last Number RedialA subscriber can initiate “Last Number Redial” by

dialling a feature code.Last number redial is restricted to ordinary calls,

group calls, all calls and calls to a CAS (CentralAnswering Service) group.

This feature is provided as default and can be disa-bled using the service terminal (SVT programming). Thedefault feature code for Last Number Redial is F2 or940.

Display Station:To activate Last Number Redial, dial F2 (or 940).

Call Last CallersAny subscriber can re-establish a connection to thelast 10 callers by dialling a feature code, code F3 or941.To start memorising the 10 last incoming calls thesubscriber must use a feature code, code 941 9.

The feature code 941 8 is used to stop the memorising.Last callers redial is restricted to ordinary incomingcalls and calls to stations in privacy.Using a non display station, the subscriber can onlydial the feature code 941 and a call will be establishedto the first call logged in the queue.If the station is a Display Master Station (AA960 orAA961) the user can see the queue of calls in thedisplay and scroll the queue to search for specific callnumbers. The following codes (digits) are used todisplay the queue:

941 1 displays first call number in queue. Displayshows CALL NUMBER

then digit 3: view next in queue.Display shows CALL NUMBER

digit 2: view previous in queue.Display shows CALL NUMBER

digit 1: view first in queue.Display shows CALL NUMBER

digit 7: delete current entry, and displaynext in queue.Display shows LASTCALL,EMPTY

digit 0 or F: to accept entry, establishingcall to the displayed number.

941 5 disables the Call Last Callers informationdisplay in idle station. Display showsLASTCALL, DISPLAY, DISABLED

941 6 enables the Call Last Callers informationdisplay in idle station. Display showsLASTCALL, DISPLAY, ENABLED

941 7 deletes the Call Last Callers queue.Display shows LASTCALL, EMPTY

941 8 disables the Call Last Callers feature forthis station. Display shows LASTCALLDISABLED

941 9 enables the Call Last Callers feature forthis station. Display shows LASTCALLENABLEDor activate Call Last Callers with a functionkey,dial F3.

PagingAllows a caller to page an absent subscriber. The

caller can select several different paging modes to givedifferent display information to the paged receiver.

Subscriber A calls B and a duplex connection isestablished. A dials 8 (or 8 followed by additionalinformation within 2 seconds). If a paging channel isfree, then A is cancelled and gets a warning tone. If allpaging channels are busy, then neither the A nor Bconnection is cancelled and the paging can be re-peated.

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The following paging features can be activated:1. Initiator’s call-number in display.

To activate paging, cancel the call with 8. A prepro-grammed beep tone is heard in the receiver, and thecaller’s call-number is displayed.2. Preprogrammed individual message indisplay.

Each subscriber can be programmed to transmit aprefix message to the called person’s pager. Thismessage (alpha numeric) will be displayed instead ofthe caller’s call-number.3. Preprogrammed system message in display.

In addition to one of the above features, a subscribercan transmit a preprogrammed system message to thecalled person’s pager. 10 different system messages(alpha numeric) are available (0-9). To activate suchtype of paging, cancel the established call with 8followed by the number (0-9) indicating the requiredsystem message. In addition, digits dialled on theintercom station’s keypad will be added to the end ofthe selected system message.

Note that a position with no station attached isalways in privacy, and can be used for users who onlyhave a pager and no station (“dummy numbers”). Seefeature “Dummy number and auto-paging).

The system has two “pager alarm” features. Diallingan alarm feature code, a special pager is activated andpreprogrammed data is displayed.

Central Answering Service (CAS)A number of stations can be programmed in a line-

chain function for simultaneous central answeringservice with automatic queuing of incoming calls.A station which is defined as a CAS operator can logon to a CAS group by dialling the feature code and thecall number to the group. Several such stations can logon to the same CAS group. The default feature code is928 for log in and 928X for log out.

If a subscriber calls a CAS group, and no one islogged on to this group, the subscriber is routed to ahunt number instead.

If there are operators logged on, the first call to theCAS group will be offered to the operator that firstlogged on. The second call to the second operator, andso on. The caller will hear a ringing tone, or is con-nected to a program distribution channel, until theoperator answers. The operator that gets a call will heara ringing tone. This tone lasts for 15 sec’s during whichtime the operator can accept the call by pressing the 0-button. If he accepts, a normal duplex conversation willbe established between the caller and operator. If theoperator does not accept the call, i.e. presses the X-button, or not accepts before the 15 sec’s timeout, thecall will be offered to the next free operator in the CAS

group.If the call has been offered to all available operators,

and none of them accepted the call, the call will berouted to a hunt number instead.There can be max. 40 CAS groups in a system.

There is no limit to the number of operators pergroup. Once in full duplex, no other features areavailable (except alarm, All-/ Group Call override).

The feature must be programmed using the ServiceTerminal, otherwise the feature is disabled. Oncelogged in, it is possible to log in/out using the privacyfunction.

The CAS operator will have a 2 second delay (pro-grammable with SVT) between accepted calls, this tobe able to initiate outgoing calls.

Display Station:CAS mode 4 is used when operating with the displaystation AA960/AA961. The CAS call will be presented inall onlogged operator stations simultaneously, (inparallel).When an operator is logging on to a CAS group,ONLOGGED will be displayed.Calling a CAS number, CAS CALL will be displayed inthe calling station.In the CAS operator station, the display will auto scrollhow many callers in queue and ID text and call numberfor the first entry, ( QUEUE 3, ENTRY 1, ID TEXT , CALLNO.)To see the next caller (entry), press digit 3,6 or 9 on thestation's keypad. To display the previous entry, pressbutton 1,4 or 7. To accept the selected entry, pressbutton 0 or F.

Call BackWhen a busy station is called, it is possible to dial a

feature code, and have the system “call back” whenyou and the called station both are free. In the mean-time you are free to make other calls. The defaultfeature code is 8.

When both stations are free, the initiator hears aspecial call back tone for 12 seconds. This is thewarning that the called station is now free. If a connec-tion is wanted, press the feature code (8) during thetone period and a normal connection is established. Ifthe call is not wanted, no code is pressed, and thefeature is auto-cancelled after 12 seconds.

There is no limit to the number of call backs in thesystem and several stations can be queued up on thesame extension number.This feature is not available when calling to stationswith device type: CENTRAL ANSWERING SERVICE.

Display Station:In the calling station, when the called station is free, thetext CALLBACK and the called stations ID TEXT andCALL NO will auto scroll. The LED will flash green.

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Call ReplyWhen a station is called, but without reply, it is

possible to dial a feature code, and leave a message inthe system that you want “call back”. The defaultfeature code is 915.

Subscriber A calls B, and when in duplex connectionA dials the feature code. The connection is auto-cancelled and in the B station a short tone is heardevery 5 min.

When the B subscriber is back at the station, andhears the tone, he can dial the feature code (915) andis automatically connected to subscriber A, (both getwarning tones).

There is no limit to how many subscribers that canleave a message at the same station, or to differentstations.

The feature is general to the system and is pro-grammed with the Service Terminal. The standardfeature code i 915.

Display Station:To activate Call Reply, dial F4 (same as 915).In the station where Call Reply is activated, the textCALLRPLY, DIAL and 915 will autoscroll.

SectoringThe CB 901 system can be divided into independent

sectors. Each station can be programmed with theService Terminal to receive, transmit or receive andtransmit to any combination of sectors.

The system has 32 sectors. Any station in thesystem can be member of several sectors. Eachstation can be individually programmed to have accessto call into another sector, and access to receive callsfrom any other sector.

All sectors are Service Terminal programmable.As default, all extensions can call and receive callsfrom the first sector (sector no. 1) when the system isinitialized. This means that with no programming ofsectoring information, any caller in the system can callto/receive from all other callers.

Dummy Number and Auto PagingA line position can be programmed to status

“dummy number”, no station connected. This feature isused when a person has no station in the CB 901system, but it is required that it should be possible topage him, (give message to the pager’s display).Dialling the call number of a “dummy position”, the callwill automatically be cancelled after approx. 2 seconds.A tone is heard in this 2 sec. period indicating that (ifrequired), additional digits can be dialled for transmis-sion to the pagers display.If no additional digits are pressed, the setup is can-

celled after the tone and the initiators’ call number isshown in the pager display.

Please, see feature “PAGING” for details regardingvarious transmission alternatives. The feature is pro-grammed by the Service Terminal.

Open StationThis feature allows a subscriber to rcall a busy

station (programmed with the open station privilege)and set up a conference call.

Subscriber A calls B (the open station) and a normalduplex connection is made, both A and B get warningtones. Subscriber C calls B and a 3-way conference isset up, both C and B get warning tones. Subscriber Dcalls B and a 4-way conference is set up, both D and Bget warning tones. The call is cancelled the same wayas CONFERENCE where in this case subscriber B(the open station) leads the conference.

The maximum number of participants in the confer-ence is Service Terminal programmable, with thedefault of 5.

Display station:Calling a open station position, the text OPEN and thecalled position ID TEXT and CALL NO auto scroll.

Direct Conference DiallingSome stations (programmable with Service Terminal)

can be given access to initiate a conference call bydialling a feature code plus the required conferencegroup. The system has a maximum of 10 prepro-grammed conference groups (0 - 9). As a normalconference call, there are max. 10 participants asdefault in the system.

The feature code is 937 + conference group (0-9).There is no warning tone on the receiving side, and thereceiving stations cannot cancel with X. Dialling X onthe initiator station cancels the whole conference.If a subscriber tries to initiate a direct conference call,but one or more of the conference participants are busyin another call, the initiator will receive a busy signaland no connection is made.

Absence Registration (Display Station).The user has the possibility to "Absence Register" hisstation in two different modes, time- or date indication.To activate the absence registration feature, the userdials:

- F0 (or the code 955). 4 digits must now beentered for time indication.- 956. 4 digits must now be entered for dateindication.

If the station activating the Absence Registrationfeature has a display ABSENCE - DIAL - TIME (or

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DATE) will auto-scroll in the station's display. If asubscriber, with a display master station (AA960), callsa station which is Absence Registered, the display willauto-scroll ABSENCE - TIME (or DATE) together withthe called ID TEXT and CALL NO. To cancel theAbsence Registration feature dial F0X (or 955X or956X). The LED flashes orange.

Message Display, (Display Station)The Message Display feature gives a caller the

possibility to send a message string to be displayed ona display station. Additional numeric information can beadded to some of the messages (messages 5 to 9) bykeying the appropriate keys, e.g. "CALL-INT" - "12345".The system operates with 10 different messages. Messages 0 - 4 have fixed 16 characters, 2 windows:0: CALL RECEPTN1: CALL SWBOARD2: CALL HOME3: VISITOR LOBBY4:

Messages 5 - 9 have fixed 8 characters, 1 windowand up to 8 digits can be added in window no. 2:5: CALL INT XXXXXXXX6: CALL TEL XXXXXXXX7: MEETING XXXXXXXX8:9:A message can be sent i two different ways:Before a connection is established: The feature code 957 is dialled. The display will autoscroll the info: DIAL - NUMBER.Dial the required call number. The display will autoscroll the info: DIAL - MESSAGE - NUMBER. Dial the required message. If one of the first 5messages is selected (0 - 4), and the user has amaster station without F-button, the message willnow be sent. Using a station with F-button, this buttonmust be pressed to send the message. Differentmessages can be tested, when the right one isselected, dial F. If one of the last 5 messages is selected (5-9), digitinformation can be added. The additional digits will beshown in window no.2, following the fixed text inwindow no. 1. The info text in the display is: DIAL -MESSAGE - DATA. The message is sent when the X-button is pressed.After a connection is established: When a connection is established , dial the featurecode 957. The display will auto scroll the info: DIAL -MESSAGE - NUMBER. Dial the required message. If one of the first 5messages is selected (0 - 4), and the user has amaster station without F-button, the message will

now be sent. Using a station with F-button, this buttonmust be pressed to send the message. Differentmessages can be tested, when the right one isselected, dial F. If one of the last 5 messages is selected (5-9), digitinformation can be added. The additional digits will beshown in window no.2, following the fixed text inwindow no. 1. The info text in the display is: DIAL -MESSAGE - DATA. The message is sent when theX-button is pressed. In the called display station theuser will see four windows auto-scroll MESSAGE -WAITING - DIAL - 958. To see the message text, dialthe feature code 958. Use the scroll keys to read thewindows. Dial the X key to delete the message.

Visicall Features.A Visicall station AE111 consists of a Visicall

module plus an additional plug-in station AA904. TheVisicall module has 32 direct dial keys. The Visicallmodule also has a 2 x 16 character display.Programming of the direct dialling keys and buffering ofmessages are internal features of the Visicall station.

Caller IdentificationThis feature informs a Visicall operator who is calling

or is trying to call. There are two modes for calleridentification:

Mode A. If the Visicall operator wants to identify anincoming caller, the feature code can bedialled after the call has been established, and this willresult in the caller’s call number being displayed on theVisicall display. The default feature code is 926.

Mode B. There is no need to dial the feature code,the callers number always appears on the Visicalldisplay after the warning tone. If the Visicall station(AA904) is switched for privacy, then the caller'snumber is displayed automatically, no need to dial thefeature code (regardless of mode A/B).

Message DisplayThis feature gives a caller the possibility to cause a

message string to be displayed on a called Visicallstation. Additional numeric information can be added tothe message by dialling the appropriate keys, e.g.“CALL EXTENSION” —— “6363”

To transmit a message from any station to a Visicallstation, first establish a normal connection, then dialthe feature code followed by a number indicating therequired message (0 - 9). The default feature code is927. If numeric information is to be added, then thisshould then follow (up to 9 digits).Press X and the connection will be cancelled and themessage ( and numeric info.) will be displayed in theVisicall’s display.

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The Visicall station can store up to 10 prerecordedmessages and this feature along with the ability to readand delete these messages is an internal function ofthe Visicall station.

If the Visicall station is in privacy, a message can besent by dialling the feature code (927) within 15seconds. If the Visicall subscriber accepts with0-button while the caller transmits a message, a normalduplex connection will be established and the messagewill be displayed.

Speed Group Phone BookTo simplify the dialling procedures for frequently used

call numbers, the CB901 exchange can be pro-grammed with abbreviated dialling numbers, consistingof two digits. If a display station is used, the caller canscroll the ID text for these preprogrammed numbers.Maximum 32 call numbers can be stored for eachstation (each phone book table) and a maximum of 32phone books can be programmed in each CB901system.

The caller dials a feature code followed by the speedcall number. The default feature is 923, but should bechanged to a one digit code for easy access.Alternatively, the user dials FF (or 959) and the first IDtext in the speed group phone book will be displayed.To display the other subscribers (totally 32 ID texts),the scroll keys must be used. When the requiredsubscriber's ID text is displayed, press the F key todial.

Each system (any size) contains maximum 32speed group phone books tables. Each such tablecontain 32 call numbers. A subscriber number in oneslave stage can be member of a speed group phonebook table in another stage.

All call numbers must be entered using the ServiceTerminal, otherwise the feature is disabled.

Intersystem Tie-LinesTwo or more geographically separated Ring-Master

systems may be connected by means of tie-lineinterface units coupled to each end of a rented orprivately owned 4-wire telephone line.Dialling access to a tie-line will be prefixed with thedigit 0, followed by a digit identifying the requiredremote central (1-5 digits), followed without pause bythe local number of the desired station.There is no limit in the distance between installations.The line can be microwave, pcm or radio.

The tie-line unit is connected to an ordinary sub-scriber position in the system.Only normal calls can be activated over the line. Thereceiving B-subscriber responds with:

- answer (establishing a call)

- privacy- busy- reject (call not established)

Each independent system is allocated an “areacode” call number. There can be up to 10 area codenumbers corresponding to 10 interconnected systems.This means that one system can call up to 9 othercentrals.

There can be up to 5 tie-lines between any two areasof centrals. In this configuration, by dialling the areacode number, a group hunting sequence will automati-cally find the first available free tie-line.

Voice Messaging,Absent Staff Registration (Multi-Svim)

It is possible to store 24 seconds of voice mes-sages. A separate printed circuit board can be installedin an ordinary subscriber position.The maximum length of the voice message is 24seconds, which can be divided as follows by use ofswitches:- 8 messages of 3 seconds,- 6 messages of 4 seconds,- 4 messages of 6 seconds,- 1 message of 24 seconds,If more than 24 seconds are required, additional voicemessaging cards can be installed.

Recording of messages is carried out on site fromany station in the system. When recording is com-pleted, a switch is set on the card to secure the voicemessage memory. The function is now available for allsubscribers in the system.The function is activated by utilizing the Call-forwardfeature. In other words, you transfer your station to oneof the prerecorded messages. Each message has beengiven a fixed subscriber number. When calling thisnumber you will hear the message, then press 99 andset your station in privacy mode.

Anyone calling your station in your absence willreceive the message you have chosen. When youreturn to your station, simply cancel the Call-forwardfunction.ADDITIONAL FEATURES:

1: Individual messages.Some selected persons can be given the possibility ofrecording individual messages. The sectoring feature isprogrammed using the Multi Purpose Relay unitGH933.

2: Dynamic information channel.Any subscriber can call the actual “information number”and listen to a prerecorded message of up to 24seconds.

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3: Automatic autodialler with spoken message.By activating a closing contact (for example doorstation AB913) it is possible to send a message of 24secs. to any predetermined subscriber number.

4: Delayed messages.One may call the predetermined autodialler number andtalk for max. 24 secs, and the message will be re-corded. Immediately after having cancelled, theautodialler will dial the preprogrammed subscribernumber (for example the All Call number). The problemwith feedback is avoided.

Public Address InterfaceAny public address system can be connected to the

CB901 system by means of a special interconnectionunit. Giving this interconnection unit a normal extensionnumber, any master station can call this number tomake an announcement.The group call or all-call facilities can also be used aspublic address.

Two-way Mobile Radio InterfaceThe CB901 system can be interfaced to a closed

two-way radio network. Two interfaces are available:HD935 - no selective call. Any master station in the

system can dial the call number dedicated to the radiointerface unit HD935. This connects him to the radionetwork. All mobile units will receive the call and canreply. Simplex or duplex operation is dependent of theradio equipment, but speech control with the T-button isrecommended. An incoming call from a mobile radiouser will call up the base radio operator in the normalmanner and cannot be transferred. The operator has toask the wanted CB901 user to dial up the HD935 unit,which connects him to the radio circuit. HD938 - selective call. This unit permits for selectivecalling in both directions. Any CB901 subscriber cancall any mobil radio unit directely and any radio unitcan dial up any individually CB901 extension.

Both units are connected to the CB901 system asan ordinary subscriber call number, 4 wires

Radio Paging InterfaceThe Paging feature can operate in combination with

many of the other features in the CB901 central.The purpose of this feature is to transmit information

to a radio paging system, including text that can bewritten in the display of a pocket receiver.

The information can be transmitted directly when aspecific number is called, or after some action in thecalling station. The pager number can be from 1 to 5digits, depending on the connected paging system.

Via SVT a paging answering time can be pro-

grammed for each subscriber, Call Reply Time. Ifthe paging receiver has no display, then thisanswering time must be programmed. If the pagingreceiver has a display, then this answering time isnormally set to zero (default). The paging channelis therefore cleared immediately after transmissionof the paging information.

The answering time can be programmed from 1to 12 minutes.

One paging channel will be busy for each pagingcall, during the "wait for paging answer" period. Ifthe page call is not answered within the pro-grammed wait period, then the page call is auto-matically erased from memory.

The system has 10 paging channels, thusaccepting 10 simultaneous pocket page calls. Thepaged person must go to the nearest masterstation and dial 8 plus his own call number. Aconnection will then automatically be establishedbetween the station that made the page call, andthe station from which the page call was answered.

Telephone Interface An interface unit, HD939, can be supplied tooperate between the public telephone network andthe CB901 intercom exchange. The interface isused to make calls from any intercom masterstation to the telephone network and to make callsfrom outside telephones into any intercom station.Multiple interfaces can be used in the system.Each interface connects to one telephone line andrequires only one station port in the CB901system. Connections are established in full duplexloudspeaking handsfree mode.

Features

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Display featuresRing-Master

Feature:

Win. #1

Display info in an IDLE station

Win. #2

Win. #3

LED

Description:

1002

CHARLIE

2:36 PM

CALL NO.

ID TEXT

TIME

BLANK

IDLE - Station not in use

INTERCOM

To update the station, dial the "update feature code" (939). The ID TEXT will be displayed. If no ID TEXT is programmed, the CALL NO is displayed. Auto update every 5 min.

F

1 2 3

4 5 6

7 8 9

0 #

M T X

INTERCOM

Display info at Power Up

ID TEXT is idle info.To scroll for CALL NO. and TIME, press orTo toggle 12 and 24 hrs,press the buttonT

To mute the microphone, pressTo manual control the speech direction, press To cancel the call, pressTo enable softspeaking mode, pressTo adjust volume, up and down16 levels, 5 strokes in displayTo activate a function, pressTo scroll the 4 windows

M

INTERCOMM

TTX

F

Default System Features:F1 - privacy F7 - (customer specified feature key)F2 - last number redial F8 - (customer specified feature key)F3 - call last caller F9 - step program distribution channelF4 - call reply F0 - absence registration, timeF5 - call forward F - programming direct diallingF6 - call forward cancel FF - speed group phonebook*

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How to use

Display Stations

Ring-MasterFeature:

Display info in the CALLING station

Win. #1

Win. #2

LED

Description:JOHN S

1204

CALLED

CALLED

RED

LOUDSPEAKING/SOFTSPEAKING

Display info in the RECEIVING station

Win. #1

Win. #2

LED

CHARLIE

1002

CALLER

CALLER

RED

Description:

When connected, the ID TEXT is displayed. To see the CALL NO, use the scroll keys.When dialling (before duplex), red lamp will flash if there is a call request.

When connected, the ID TEXT is displayed. To see the CALL NO, use the scroll keys

When you are making a call:- Touch-dial the required call number. The number is shown in the display.- The connection is established when the dial tone stops. The called stations's

ID TEXT is displayed- The red warning LED is lit during the conversation.- To cancel, press X.When you are receiving a call:- A short call tone and the red lamp indicate an incoming call. The caller's ID TEXT

is displayed.- No action is necessary, simply reply.- You now have a "handsfree" call.

In loudspeaking conversation:- The station functions normally in handsfree loudspeaking mode.- It is not necessary to touch the station during conversation, it simply reacts to the volume of the voices.In confidential/softspeaking conversation: (AA960 only)- Press the handset key:

Lift the set to your ear. The handset sign is displayed.- To revert to loudspeaking, press the handset key again.

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Display StationsRing-Master

Feature:

Display info in the PRIVACY ACTIVATING station

LED

Description:

PRIVACY

F1

FEATURE

ORANGE FLASHING

PRIVACY

Display info in the CALLING station

Description:

To activate the PRIVACY feature, dial the privacy feature code F1 (951)To see ID TEXT, CALL NO and TIME use the scroll keys.

Win #1, 2 and 3 auto-scrollPrivacy tone is received

Display info in the RECEIVING PRIVACY station

CALL REQUEST

Description:Win #1, 2 and 3 auto-scrollPrivacy tone is received

Win. #1

When you want to work undisturbed.- Dial the Privacy feature code F1 (951). PRIVACY is displayed.- Your station is now blocked for incoming calls. You can make outgoing calls.- To open for incoming calls again, dial the Privacy feature code again F1 (951).Calling a station in privacy mode.- You hear a continuous warbling tone and the text PRIVACY, the called

subscriber's ID TEXT and CALL NO is displayed. - The receiver hears a short call tone and the LED lights red. CALL RQ

(call request), caller's ID TEXT and CALL NO is displayed.- The receiver may then accept the call within 12 seconds by pressing 0.

Win. #1

LED

FEATURE

CALLED

RED

Win. #3

PRIVACY

CALLED 1204

JOHN SWin. #2

Win. #1

LED

CALLER

Win. #3

CALL RQ

CALLER 1002

CHARLIEWin. #2

RED

FEATURECODE

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How to use

Display StationsRing-Master

Feature: T-BUTTON, SIMPLEXX-BUTTON, CANCEL

Display info in the CALLING station

Win. #1

Win. #2

LED

Description:JOHN S

1204

CALLED

CALLED

RED

Display info in the RECEIVING station

Win. #1

Win. #2

LED

CHARLIE

1002

CALLER

CALLER

RED

Description:

When connected, the ID TEXT is displayed. To see the CALL NO, use the scroll keys.

When connected, the ID TEXT is displayed. To see the CALL NO, use the scroll keys

T-Button, Simplex conversation.For manual speech control. T-button may be used by either party, but only by one of the stations at a time.Calls to or from noisy areas may be manually controlled (simplex operation).- Press T to talk.- Release T to listen.- To return to handsfree, (duplex operaton) simply tap the T-button once.

X-Button.Cancelling the connection:- Press X to cancel.- Either party may cancel a call.

TT

X

4

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Display StationsRing-Master

Feature: M-BUTTONMICROPHONE MUTE

Display info in the CALLING station

Win. #1

Win. #2

LED

Description:JOHN S

1204

CALLED

CALLED

RED

Display info in the RECEIVING station

Win. #1

Win. #2

LED

CHARLIE

1002

CALLER

CALLER

RED

Description:

When connected, the ID TEXT is displayed. To see the CALL NO, use the scroll keys.

When connected, the ID TEXT is displayed. To see the CALL NO, use the scroll keys

To mute the microphone:During a call you may mute your microphone.- Press and hold down the M button.- The other party now does not hear anything from your station.- Release the button to continue the call handsfree.

Note: If the M-button is pressed twice (within 0,4 sec.) the microphone mute function is locked into mute mode. To reset, tap the M-button once.

M

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How to use

Display StationsRing-Master

Feature:

Display info in the CALLING station, calling a BUSY station.

Description:BUSY FEATURE

CAMP ON/BUSY/HURRY UP

Display info in the CALLED station, caller dials "O" button for HURRY UP.

HURRY UP FEATURE

Description:

Win #1, 2 and 3 auto-scroll.

Busy tone is heard.

Short hurry up tone is heard.

1204

JOHN S

CALLED

CALLED

Win. #1

Win. #2

Win. #3

LED RED

Display info in the CALLED BUSY station

Description:

CHARLIE

CALL RQ

CALLER

CALL REQUEST Win #1, 2 and 3 auto-scroll.

1002 CALLER

Win. #1

Win. #2

Win. #3

LED RED FLASHING

Win. #1

LED RED FLASHING

- An intermittent tone indicates the called station is busy. BUSY is displayed.- You may cancel your call by pressing X or wait for the other party to become free.

If the dialled station becomes free within 12 seconds, your call will go straight through. If not, your call will be cancelled automatically.

- To activate the Hurry Up feature, press 0. A short tone is transmitted to the called busy station, and the text HURRY UP is displayed. The LED flashes red. The tone is repeated every time the 0 button is pressed.

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Feature:

Display info in CALLING station, calling All-Call.

Description:

5555DIALLINGAC/GC NO.

ALL-CALLGROUP-CALL

Win #1, 2 and 3 auto-scroll.

112 REMAIN.TIME

Win. #2

LED RED

Display info in all the CALLED stations.

Description:

No change to display information.

Initiating All/Group-Call.- All/Call and Group-Call can only be made from certain preprogrammed stations.- By dialling a certain number a general message may be given to particular

groups or to all stations in the system.- Breaks through blocked/busy stations.- Existing conversations are interrupted, but not cut off.- The display shows TIME count-down, the remaining time for speaking.Reply back on All/Group Call.- Press the 8-button to cancel the call.- Person wanting to reply dials 90 from any station and is connected to the initiator.

LED RED

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How to use

Display StationsRing-Master

Feature: CONFERENCE

Initiating a Conference Call- Up to 5 stations in conference:- You have got answer from the first called person.- Dial the number of the next person. A tone indicates that the connection is

established. CONF is displayed. Continue till all persons (up to 4) have been called.

- Any person in a conference can hear/talk to the others.- Any person can leave the conference by pressing the X-button and a warning tone is heard in the other stations.- Alternatively, the initiator can disconnect the last person brought into the

conference by pressing the X-button once, and continue to disconnect one at a time in inverted order.- To cancel the entire conference the initiator presses the X-button twice (XX).NOTE: Only the initiator of a call can bring other persons into a conference.

Display info in the CALLING station

Win. #1

Win. #2

LED

Description:JOHN S

1204

CALLED

CALLED

RED

Display info in all RECEIVING station in the conference

Win. #1

Win. #2

LED

Conf FEATURE

CALLER

RED

Description:

When connected, the ID TEXT is displayed. To see the CALL NO, use the scroll keys.

Display info in the CALLING station, calling second participant

Win. #1

LED

Description:CONF FEATURE

REDDialling up to 4 subscribers, CONF will be displayed.

Win. #3 1002 CALLER

CHARLIEWin #1, 2 and 3 auto-scroll.

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Feature: PRIORITY

Display info in CALLING priority station, calling a BUSY station.

Description:BUSY FEATURE

Win #1, 2 and 3 auto-scroll.

Busy tone is heard.

Press 0 button to activate Priority.The call is established.When connected, the ID TEXT is displayed. To see the CALL NO, use the scroll keys.

1204

JOHN S

CALLED

CALLED

Win. #1

Win. #2

Win. #3

LED RED

Display info in CALLED BUSY station

Description:

CHARLIE

CALL RQ

CALLER

CALL REQUEST Win #1, 2 and 3 auto-scroll.

When connected, the ID TEXT is displayed. To see the CALL NO, use the scroll keys

1002 CALLER

Win. #1

Win. #2

Win. #3

LED RED FLASHING

JOHN S CALLEDWin. #1

Stations can be defined as “priority” stations so that they can override a called station which is busy or in privacy, resulting in a duplex connection with the called station.The priority station receives the busy tone and BUSY (or PRIVAVY) in the display. The display in the called station will auto-scroll CALL RQ, CALL ID and CALL NO. The priority caller dials 0. The existing call is cancelled and the priority station is connected to the called station in a normal duplex conversation.Connections set up normally (without using “0” option) can be cancelled by other priority stations. Connections set up by use of priority cannot be cancelled by other priority stations (the connection has “priority status”).There is no limit to the number of priority stations in a system.At any time during a normal call, a connection can obtain a “priority status” when one of the priority callers presses "0".

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How to use

Display StationsRing-Master

Feature:

Display info in CALLING station, when activating CALL REPLY

Description:

CALLRPLY

F4

FEATURE

CALL REPLY

To activate Call Reply, dial Call Reply feature code F4 (915).

The Feature text CALLRPLY will be displayed a short period before the windows shows idle info.

CHARLIE IDLE CALLER

LED RED

Display info in CALLED station, where Call Reply is activated

Description:

DIAL

CALLRPLY

INFO

FEATURE Win #1, 2 and 3 auto-scroll.

915 INFO

Win. #1

Win. #2

Win. #3

LED ORANGE FLASHING

Win. #1

Activating Call Reply.Calling a station, but without reply, it is possible to dial a feature code, F4 (915) and leave a message in the system that you want "call back".- No reply from the called station. Dial the feature code F4 (915). The call is auto-

cancelled and in the called station a short tone is heard every 5 min. The text, CALLRPLY - DIAL - 915 is displayed.

- When the called person is back at the station, and hears the tone, and sees the text info, he can dial the feature code F4 (915) and will automatically be connected to the initiator. An unlimited quantity of Call Reply can be made in the system, to the same or to different call numbers.

FEATURECODE

10

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Display StationsRing-Master

Feature: CALL BACK

Display info in CALLING station, when called station is free

Description:

CHARLIE

CALL-BACK

CALLER

STATUS Win #1, 2 and 3 auto-scroll.

1002 CALLER

Win. #1

Win. #2

Win. #3

LED GREEN FLASHING

Display info in CALLING station, calling a BUSY station.

Description:BUSY FEATUREWin #1, 2 and 3 auto-scroll.

Pressing 8 to activate Call Back feature. The Feature text is displayed for a short period. The connection is then cancelled and display shows idle status.

1204

JOHN S

CALLED

CALLED

Win. #1

Win. #2

Win. #3

LED RED

CHARLIE

CALL-BACK

IDLECALLER

FEATURE

To activate Call Back.The called station is busy, you hear the busy signal and BUSY is displayed.- Press the 8-button for automatic recall.- The connection is automatically cancelled and your station is now free for

other calls.- When both the receiver's and your station are free, the system will notify you with

a distinctive tone signal and the text CALL-BACK, called ID TEXT and NUMBER is displayed.

- Press the 8-button if you still want the connection established.

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How to use

Display StationsRing-Master

Feature: CENTRAL ANSWERING SERVICE (CAS - mode 4)

Display info in CAS OPERATOR/SECURITY station when logging on.

Description:

ONLOGGED

9336666

INFO

DIALLING To log on to a CAS group, dial the feature code (933) and the specific CAS group's call number. Max 5 operators can be logged on simultaneously

Win. #1

Display info in CALLING station, calling a CAS group (6666)

Description:

cas call

6666

CALLED

DIALLINGDuring the waiting period, until the CAS call is accepted, a program distribution channel is broadcast (or a ringing tone).

Win. #1

LED RED

Display info in CAS OPERATOR/SECURITY station when called.

Description:

ENTRY 1

QUEUE 3

CALLER

INFOWin #1, 2 and 3 auto-scrollQUEUE 3 indicats how many CAS calls in queue (3). Max. calls in queue are 9, more is indicated by a star *.To accept the first caller (entry 1), press 0 or F button.

CHARLie CALLER

Win. #2

Win. #3

LED RED FLASHING

Win. #1

LED GREEN FLASHING

A number of stations can be programmed in a line-chain function for simultaneous central answering services with automatic queuing of incoming calls.A station which is defined as a CAS operator can log on to a CAS group by dialling the feature code (933) plus the number of the CAS group. Several such stations can log on to the same CAS group. ONLOGGED will be displayed. To log out of a CAS group, dial 933X.If a subscriber calls a CAS group, and no one is logged on to this group, the subscriber is routed to a hunt number instead.When a call is made to a CAS group, the call will be offered to all operators logged on simultaneousl, (in parallel). The caller will hear a ringing tone or the audio from a program distribution channel until the call is answered, and CAS CALL will be displayed.In the CAS operator station, the display will auto scroll how many callers in queue, ID text and call number for the first entry, (QUEUE 3, ENTRY 1, ID TEXT , CALL NO.) To display the next caller's ID and step through the ID queue, press digit 3 on the station's keypad. To reverse in the queue, press button 2. To return to the first entry, press button no. 1. During this activity, the operator will hear a ringing tone or the audio from a program distribution channel. To accept the selected entry, press button 0 or F. A full duplex conversation will be established. If none of the operators accepts the CAS call, the call will be routed to a hunt number instead.

12

1002 CALLERWin. #4

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Display StationsRing-Master

Feature: CALL FORWARD

Display info in the CALLING station 1333, calling station 1002.

Description:

1002

CALL FWD

CALLED

FEATUREWin #1, 2, 3 and 4 auto-scroll.Win #2, Called Number, is flashing fast

JOHN S FWD TO

Win. #1

Win. #2

Win. #3

LED RED

Display info in the FORWARDING station 1002, activating the feature.

Description:

CALL FWD

F5

FEATURE

To activate Call Forward, dial feature code F5 (910).

The Feature text CALL FWD will be displayed a short period.Dial forwarding station's call number.

TO NUM INFO

Win. #1

Win. #2

LED RED

1204 FWD TOWin. #3

Display info in the FORWARDING station, no. 1002.

Description:

1204

CALL FWD

FWD TO

FEATUREWin #1 and 2 auto-scroll.

Win. #2

LED ORANGE FLASHING

1204 FWD TOWin. #4

Win. #1

To activate Call Forward.When leaving your office and wishing to answer incoming calls at a new location.- Call the station of the person you are going to visit. Dial the feature code F5 (910).

Or, first dial the feature code F5 (910) and then the call number of the station you are going to be at. Any call to your station will now be routed to the new location.

To cancel the Call Forward feature:- Dial the code F6X (913X) at your own station or F6X (913X) + your station number

at the forwarded location.

FEATURECODE

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Display StationsRing-Master

Feature: SECRETARY TRANSFER

Display info in the CALLING station, calling the BOSS.

Description:

1002

SECRETRY

CALLED

FEATUREWin #1, 2, 3 and 4 auto-scroll.Win #2, Called Number, is flashing fast

JOHN S SECR. ID

Win. #1

Win. #2

Win. #3

LED RED

Display info in the BOSS' station, activating the Secretary Transfer feature.

Description:

SECRETRY

935

FEATURE

To activate Secretary Transfer, dial feature code 935. The info text SECRETRY and TO NUM is displayed. Dial the call number of the required secretary.Win #1 and 2 auto-scroll.

TO NUM SECR. NO

Win. #1

Win. #2

1204 SECR. NOWin. #4

To activate Secretary Transfer.Dial the feature code 935. All incoming calls will be routed to the secretary. When the secretary presses "0" button, a connection between secretary and boss is established. Caller is put on hold. The secretary can toggle between boss and caller by pressing the "0" button. Pressing "X", a call is established between boss and callerTo cancel Secretary Transfer:Dial the feature code 365X on the secretary or boss station.

LED ORANGE FLASHING

Display info in the SECRETARY station when the BOSS is called.

Description:

1002

SECRETRY

BOSS NO

INFOWin #1, 2 and 3 auto-scroll.The secretary can toggle between boss and caller by pressing the "0" button. The caller is put on HOLD when secretary in connection with the boss.Pressing "X" will put up a call between boss and caller.

JOHN S BOSS ID

Win. #1

Win. #2

Win. #3

LED RED

FEATURECODE

14

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Display StationsRing-Master

Feature: CALL TRANSFER

Operation:Subscribers can call a certain number, the Call Transfer number, and request for connection to another extension.When the caller dials the Call Transfer number and asks for connection to another extension, the call transfer operator dials the feature code 916 followed by the requested call number. In the display, the following info text will be shown: TRANSFER - TO NUM. All three stations are now connected, but there is only audio connection between the call transfer operator and the requested call number. The caller is put on HOLD.The call transfer operator can now establish a connection between the caller and the requested call number by pressing "X". The operator leaves the connection.If the call transfer operator decids not to make the connection between caller and requested call number he dials the feature code 916 and he will be reconnected to the caller.

Display info in the CALL TRANSFER station, when activating the feature.

Description:

TRANSFER

916

FEATURE

FEATURECODE To activate Call Transfer,

dial feature code 916.

The Feature text TRANSFER will be displayed a short period.Dial call number to transfer to.

To num INFO

Win. #1

Win. #2

LED RED

1204 TRANSFER TO

Win. #3

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How to use

Display StationsRing-Master

Feature: HUNT

Display info in the CALLING station

Description:

1005

HUNT

CALLED

FEATUREEach station is allowed one hunt number to which the central automatically hunts if the called station is busy or in privacy.Win #1, 2, 3 and 4 auto-scroll.Win #2, Called Number, is flashing fast.

JOHN S HUNT TO

Win. #1

Win. #2

Win. #3

LED RED

1204 HUNT TOWin. #4

Each station is allowed one hunt number to which the central automatically hunts if the called station is busy or in privacy. Several stations can thus be linked together, so that the search continues until a free station is found.

Display info in the HUNTED station

Description:

1005

HUNT

CALLED

FEATUREWin #1, 2, 3 and 4 auto-scroll.Win #2, Called Number, is flashing fast

CHARLIE CALLER

Win. #1

Win. #2

Win. #3

LED RED

1002 CALLERWin. #4

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Display StationsRing-Master

Feature: ABSENCE REGISTRATION

Display info in the CALLING station.

Description:

TIME

FEATUREWin #1, 2, 3 and 4 auto-scroll.

CALLED

Win. #1

Win. #2

Win. #3

LED RED

Display info in the ABSENCE REG. station, activating the feature.

Description:

ABSENCE

F0

INFO

To activate Absence Registration (time registration), dial feature code F0 (or 955). Dial the time.To activate Absence Registration (date registration), dial feature code 956. Dial the date.To cancel Absence Registration, dial the code F0X (or 955X or 956X).

dial INFO

Win. #1

Win. #2

LED RED

time INFOWin. #3

Display info in the ABSENCE REGISTERED station.Description:

ABSENCE

TIME

FEATUREWin #1 and 2 auto-scroll.

Win. #2

LED ORANGE FLASHING

CALLEDWin. #4

Win. #1

To activate Absence Registration:To activate the Absence Registration feature, the user dials the code:

- F0 (or 955) plus 4 digits to indicate time or 956 plus 4 digits to indicate date.ABSENCE - DIAL - TIME (or DATE) will auto-scroll. The LED will flash orange.Calling the Absence Registrated station: The initiator will hear a specific tone and the message ABSENCE and TIME together with the called ID TEXT and CALL NO will auto-scroll.To cancel Absence Registration:Dial the code F0X (or 955X or 956X).

FEATURECODE

12:30

ABSENCE

1002

JOHN S

12:30

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How to use

Display StationsRing-Master

Feature: DIRECT DIALLING

Display info when programming DIRECT DIALLING feature.

Description:

To program the Direct Dialling feature, dial the feature code F* (or 914). Then dial the table number (1=key 0-9, 3=F1-F9) followed by the key number (0-9) and the required data (call number, feature code etc.). End programming with the X key.

Operation:It is possible to program keys 0 to 9 and F0 to F9 of the stations' keypad to dial 20 frequently used numbers (call numbers or feature codes) with one/two key- stroke(s). When a programmed key is pressed, a dial tone is heard as normal. If no other key is pressed within 1 second, then the programmed data is automatically dialled. If a second key is pressed within 1 second, then a normal dial sequence can take place. Programming:Programming of the direct dialling data, relevant to the different keys, is made by the station itself (or from the SVT central programming).To program the Direct Dialling feature, dial the feature code F* (or 914). Then dial the table number 1 or 3 (1 for keys 0-9, 3 for key-combination F plus 1-F plus 9) followed by the key number (0-9) and the required data (call number, feature code etc.). In the display the following info text is displayed: TABLE - KEY NO - NUMBER.End programming with the X key. Example: Programming the sequence:

F* 1 3 1002 X will put call number 1002 on key 3.F* 3 5 1204 X will put call number 1204 on key-combination F plus 5, (F5).

LED RED

TABLE

F

TABLE NO

KEY NO

Win. #1

Win. #2

DATA(CALL NO)

Win. #3

FEATURECODE*

18

NUMBER

KEY NUM

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Display StationsRing-Master

Feature: MESSAGE DISPLAY

Display info in the CALLING station, activating (transmitting) a message.

Description:When a call is established, dial the feature code 957. The display shows DIAL - MESSAGE. Dial the required message number. When the right message is selected, dial F to send it. The messages no. 5,6,7,8 and 9 must be followed by additional digit information, DATA.

A message string can be sent to another subscriber, to the station's display. Additional numeric information can be added to some of the messages by keying the appropriate keys, e.g. "CALL-INT" - "12345". A message can be sent before a connection is established, or after the setup. The system operates with 10 different messages: Messages 1 - 5 have fixed 16 characters, 2 windows:

0: CALL RECEPTN 1: CALL SWBOARD 2: CALL HOME3: VISITOR LOBBY 4:Messages 6 - 0 have fixed 8 characters, 1 window and up to 8 digits can be added in window no. 2:5: CALL INT XXXXXXXX 6: CALL TEL XXXXXXXX 7: MEETING

XXXXXXXX 8: 9:To transmit a message when a call is established, dial the feature code 957. The text in the display: DIAL - MESSAGE. Dial the required message number. When the right message is selected, dial F to send it. If the message 5,6,7,8 or 9 is selected, the info in the display will be: DIAL - MESSAGE - DATA. Dial required digit information (window no. 2) will be added to text in window no. 1. Dial F to send the message.In the called display station (AA960) the user will see four windows auto-scroll MESSAGE - WAITING - DIAL - 958. To see the message text, dial the feature code 958. Use the scroll keys to read the windows. Dial the X key to delete the message.

Display info in the station receiving a message Description:

Win #1,2,3 and4 auto-scroll.To see the messages, dial the feature code 958. Use the scroll keys to read the windows. Dial the X key to delete the message.

19

MESSAGE

DIAL

INFO

INFO

Win. #1

Win. #2

DATA

INFO

Win. #3

LED RED

MESSAGE

INFO

INFO

Win. #2

LED ORANGE FLASHING

Win. #1

WAITING

DIAL

INFO

INFO

Win. #4

Win. #3

958

How to use

Display StationsRing-Master

Feature: SPEED GROUPPHONE BOOK

Display info in the CALLING station.

Description:

Dial the feature code FF (or 959) to bring up subscribers pre-programmed in the phone book. Use the scroll keys to display up to 32 call numbers (ID text). When the required subscriber is displayed, press F. The call will be established.

20

JOHN s

FF

ID TEXT 1

thomas b

Win. #1

Win. #2

martin hWin. #3

FEATURECODE

wÿnand gWin. #4

LED ORANGE

BENGT E

pedro f

Win. #1

Win. #2

robert nWin. #3

dallasWin. #4

ID TEXT 2

ID TEXT 3

ID TEXT 4

ID TEXT 5

ID TEXT 6

ID TEXT 7

ID TEXT 8

klaus o

BJØRN F

Win. #1

Win. #2

ID TEXT 9

ID TEXT 10

HANS H

JOHN C

Win. #3

Win. #4

ID TEXT 11

ID TEXT 32

The caller dials a feature code followed by the speed call number. The default feature is 923, but should be changed to a one digit code for easy access. Alternatively, the user dials FF (or 959) and the first ID text in the speed group phone book will be displayed. To display the other subscribers (totally 32 ID text), the scroll keys must be used. When the required subscriber's ID text is displayed, press the F key to dial.Each system (any size) contains maximum 32 speed group phone books tables. Each such table contains 32 call numbers. A subscriber number in one slave stage can be member of a speed group phone book table in another stage.All call numbers must be entered using the Service Terminal, otherwise the feature is disabled.

To simplify the dialling procedures for frequently used call numbers, the CB901 exchange can be programmed with abbreviated dialling numbers, consisting of two digits. If a display station is used, the caller can scroll the ID text for these preprogrammed numbers. Maximum 32 call numbers can be stored for each station (each phone book table) and a maximum of 32 phone books can be programmed in each CB901 system.

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System CB901

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System CB901

A. Installation Planning.Proper planning minimizes the time required and

costs incurred during an installation. In the long term,maintenance, changes and expansions can be accom-plished efficiently when planned for prior to the initialinstallation. This results in customer satisfaction andgoodwill through a minimum disruption of their businessactivities. Ultimately, customer satisfaction results inadditional sales.

Each customer’s facility is different and requires atailored approach to ensure that the job runs smoothly.Each facility will have its own combination of circum-stances which must be addressed. The table belowsummarizes the major stages of a typical installation.The sequence in which the stages are accomplishedmight vary, the work involved in each stage itself can bemodified to reflect the particular circumstances of eachinstallation. The general approach, however, shouldinclude the following stages:

STEP INSTALLATION1. Site survey and data collection.2. Plan major equipment layout. (Central,

system power supply, andlocation of the various stations,speakers, etc.

3. Plan cable routing.4. Prepare and pre-assemble the central

and power supply at the shop facility.5. Site work:

a. Running of station cables.b. Equipment mounting (central, powersupply, etc.).c. Installation of stations and speakers.d. System programming and adjustments.

6. System check-out and commissioning.7. Customer introduction and training.

B. Central LocationA summary of the environmental factors affecting the

Ring-Master CB901 system is presented in the listingbelow. These factors must be considered when devel-oping a detailed system plan. Site preparation isdependent upon the customer’s facilities. In manycases there may only be one location where the centraland power supply (or transformer) can be mounted.However, if there is a choice of location, the advantagesand disadvantages of each location should be consid-ered.

CHAPTER 4. InstallationNON STRUCTURAL CONSIDERATIONS:A. The central and power supply must be mounted

on the wall or in a 19" rack.B. Location of the majority of stations, locate the

central strategically, so that you can minimizethe length of the cable runs.

C. Location of existing telephone ducts orconduits.

D. The AC line should be exclusively dedicated tothe system. If the line is equipped with a circuitbreaker at the service entrance panel, thecircuit breaker switch should be labelled: “DONOT TURN OFF”

E. The equipment should be installed in an areathat has adequate ventilation. A temperaturerange of 0 degrees C (32 degrees F) to 25degrees C (77 degrees F) and a humidity rangeof 30% to 90% relative must be maintained.

F. Appropriate lighting conditions and adequateworking space should be provided for futureservice calls.

G. Consideration must be given to thoseconditions that may cause damage to theequipment. For example, dust or vapour fromflammable or corrosive solvent may causedamage, even so static electricity from carpetsand plastic furniture, or direct sunlight. Theinstallation site should not be located in an arealikely to be flooded or likely to be damaged bymoving objects nearby.

H. The central should NOT be installed in an areanear electrical noise producing equipment,such as heavy motors, welders, dimmers, radiotransmitters, copying machines, etc.

I. The power supply (or transformer) must bemounted ABOVE the central. This is to preventoverheating of the central.

J. Check carefully that the central equipment hasnot been damaged during transport. Observespecially the pins on the flatcable contacts as

well as the pins on the PCB’s.K. There are 4 screw holes in the cabinet for

mounting on the wall or in a 19" rack.The installation cable can enter the cabinet atall 4 corners.

Installation

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System CB901

C. Cabling RequirementsEach station is connected to the central by 4 leads

(in two twisted pairs), 1 pair for audio and signalling and1 pair for power supply. The 24V DC can either besupplied directly from the central, or a group of stationscan be powered from a remote power supply.

Leads No. 1 and No. 2.Individual leads, i.e. a separate twisted pair is requiredfor each station. Galvanically connected to KRONEsubscriber terminal of flatcables BF927 in the central,these pairs carry tone signalling (CCITT norm) fordialling, audio transmission and DC control signals forstations.

The maximum loop resistance of this pair is 240Ohm, corresponding to approx. 2 km cable length fromstation to central, using standard telephone cable with0,6mm diam. wiring. A longer distance (loop resistancemore than 240 Ohm) can cause incorrect diallingtransmission.If the cable to a station or a group of stations is runningclose to radio aerials or other interference sources, theleads should be shielded.

Leads No. 3 and No. 4.These leads carry operating voltage to the stations.

The maximum / minimum station voltage for properoperation is 28,5V - 21V. This allows a loop resistancebetween each station and power supply (centralized orlocal) of 40 Ohm, giving a distance of 350 meters on0,6mm copper wire and 600m on 0,8mm. (based onpower supply output of 27,0V). The above calculationsare based on the average power consumption of 150mAper station and that the power supply is adjusted for anoutput of 27,0 V DC. The LA925 (LA924A for 110V AC)supplied by Stento ASA can be easily adjusted. Thewire dimension for stations located further from the

central must be increased accordingly. However,independent local DC power supplies can be used fordistant stations. No reference wiring between local andcentral power supplies is necessary.IMPORTANT NOTE: If a number of stations are pow-ered from a common/parallel DC power pair, voltagefluctuations can result in incidental crosstalk. Thereforeit is essential that a separate power pair is alwaysused for each station.If the output voltage of the power supply is adjusted for27,0 V DC (recommended), this will give the followingcable lengths at the indicated types of telephone cableused:

250 meter at 0,5 mm diameter copper cable350 “ “ 0,6 mm “ “ “600 “ “ 0,8 mm “ “ “900 “ “ 1,0 mm “ “ “

If the actual distance exceeds these norms, it isrecommended to increase the diameter of the cable (byusing several wires), or to install a local power supplyclose to the station(s).Table with technical data related to the calculationof cable lengths:Normal voltage to the station (LA925/LA924A): 27,0 VMaximum voltage to the station: 28,5 VMinimum voltage to the station: 21,0 VNormal power consumption of the station: 100 mAMaximum power consumption of the station: 150 mA

In the CB901 system, the following loop resistancevalues of the installation cable to the stations can beaccepted:Max. loop resistance station wire pair no. 1, leads 1and 2 = 240 OhmMax. loop resistance station wire pair no. 2, leads 3and 4 = 40 Ohm.

Installation

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System CB901Installation

Central

POWER UNIT

1 2 3 4 1 2 3 4

In station AA916/AA960: Audio and signalling, wire 5&4Power, wire 3(+) & 6(-).

In all other stations:Audio and signalling, wire 1&2Power, wire 3(+) & 4(-).

CENTRALIZED POWER SUPPLY

Distance max. 350 meter (0.6 mm diam.)

1 2 3 4

Audio and signalling, 1&2 / 5&4.

REMOTE POWER SUPPLY

Distance max. 2000 meter, (0.6 mm diam)

REMOTE POWER UNIT+ -

CB901-1

F

1 2 3

4 5 6

7 8 9

0 #

M T X

INTERCOM

5 4 3 6Screw terminal RJ 45, 8 pin

AA903 AA916/AA960

F

1 2 3

4 5 6

7 8 9

0 #

M T X

AA903 AA916/AA960

In station AA916/AA960: Audio and signalling, wire 5&4Power, wire 3(+) & 6(-).

In all other stations:Audio and signalling, wire 1&2Power, wire 3(+) & 4(-).

1 2 3 4 5 4 3 6

INTERCOM

Ring-Master

Central

POWER UNIT

CB901-1Ring-Master

Screw terminal RJ 45, 8 pin

FRONT VIEW

Termination to installation cable: Stations using 8 pin modular RJ45 plug: AA960/AA916

Pin 1: external loudspeakerPin 2: external loudspeaker, remote output Pin 3: wire 3, power 24VDC (+), remote inputPin 4: wire 2, (B), audio & signallingPin 5: wire 1, (A), audio & signallingPin 6: wire 4, power 24VDC, (-)Pin 7: remote output Pin 8: remote input

MODULAR JACK ASSEMBLY RJ45

PIN 1PIN 8

6 0

1 2 3

4 5 6

7 8 9

T 0 X

6 0

1 2 3

4 5 6

7 8 9

T 0 X

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System CB901

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System CB901

CHAPTER 5. Technical Specifications

5.1. TECHNICAL DATA - DISPLAY MASTER STATION AA960.

5.2. LINE SPECIFICATION

Operating voltage: 24V DC +/- 15%Current drain:

Station, stand by: 0.02 AStation, normal speech level: 0.1 AStation, max. speech level: 0.2 AStation, w/16 ohm external speaker max. speech level: 0.4A

Max. power consumption:Station alone, approx. 5 WStation w/16 ohm ext. loudspeaker: 10 W

Amplifier output power:Normal speech level: 0.2 WMax. speech level: 1 WThe station amplifier can supply additional 2 W to an external loudspeakerExternal loudspeaker impedance: Recommended 16 to 50 ohm.Volume control range: 27dB

Display: 8 characters, alpha numeric

Temperature range: 0 - 40ºC (32 - 104ºF)

Cable requirements:1 twisted pair for audio and signalling1 pair for power supply

Line specifications:Frequency range: 300 - 5000 HzGalvanic line: 0 dBm (1mW/600ohm)Normal speech level: -12 dBmMax. speech level: + 4 dBmTone signalling level: - 10 dBm (CCITT)Modem signalling (32kHz): -16dBm

Dimensions AA960:Height: 51 mm (2.0"), Width: 72 mm (2.7")Length: 224 mm (8.8")

Technical Specifications

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System CB901

5.3. TECHNICAL DATA - CENTRAL UNIT CB901

Power requirements: 24V DC regulatedInternal voltages: +/- 12V, +/- 5V, 0V.Power consumption, data unit: approx. 1 Amp.Power consumption, Subscriber card: approx. 100 mAMax. power consumption: approx. 100WattCable specifications:

2 twisted leads per station for audio2 twisted leads per station for power supply

Line specifications:Frequency 300 - 5000 HzGalvanic line: 0 dBm (1mW/600ohm)Speech level, normal: -12 dBmSpeech level, max.: + 4 dBmTone signalling level: - 10 dBmTone signalling frequencies in accordance with CCITT norms

Switching principle:Internal in nodes: Time Division Multiplex (TDM) with analogue transmission based onPulse Amplitude Modulation

Between nodes: Digital transmission, Pulse Code Modulation (PCM), 2MBIT/S.Programme organization:

Microprocessor (MPU) 16 bits MC68000Cassette DP991/DP992 dimensions:

Height: 264mm (10.4") Width: 483mm (19") Depth: 300mm (11.8")Colour: Aludine yellow

CE Certification: CB901 complies with the following standards: EMC directive 89/336-EEC, EN50081-1and EN50082-1

Technical Specifications

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System CB901

STENTO ASAProf. Birkelandsvei 27Postboks 68, LeirdalNO-1008 Oslo, NorwayWeb: http://www.stento.no

System CB901 is manufactured by STENTO ASA, Norway to conform to Quality System standardsBS5750, Part 2 and ISO9001. The company reserves the right to modify designs and alterspecifications without prior notice, in pursuance of a policy of continuous improvement.

F A S T A C C E S S C O M M U N I C A T I O N

wwt_114e. July 99

Excellent sound reproduction.

Multi-colour LED for indications. Red duringconversation.

8 characters alpha-numeric display.- station's call number- station's ID text- time (12 or 24 hrs. indication)

Scroll keys for the display

Function key, F

Key to activate confidential mode.

Volume control keys, volume up/down

Standard international telephone keypad

"T-to-talk" optional manual control of calls.

Microphone mute key

"X-to-cancel" key.

Sensitive microphone.

AA960, Master Stationwith display