Tetra 3T Infrastructure, EXTRAS

8/16/2019 Tetra 3T Infrastructure, EXTRAS

http://slidepdf.com/reader/full/tetra-3t-infrastructure-extras 1/53

3T Infrastructure, eXTRAS Andreas Binder



Contents

1



Introduction

2

Direct Mode Interface (DMI)

- Voice plus data (V+D)

TETRA Networ k

PSTN

ISDN

PDN

Other TETRA

Networks

Base

Station

Base

Station

Base

Station

TETRA

Switch

NMI LSI

PDN

ISDN

PSTN

Other Systems

API

BSI

Command & Control

Systems

Analogue Radio System

Recording System

Data Bases

Applications

etc.

Air Interface (AI)

- Voice plus data (V+D)

Peripheral

Equipment

Interface (PEI)

Inter-System

Interface (ISI)



eXTRAS System Design and Architecture

3



eXTRAS SOLO System Design

4

Second

carrier



eXTRAS Net Elements (1)

5

• Portable Terminals (personal, e.g. hand-held)

• Mobile Terminals (e.g. vehicles)

• Base Station(s) or eXTRAS SOLO(s)

• TETRA Switch

• Network Management (single PC or server/client)

• Dispatcher (Working Position, optional with DGNA , AVL

or Lone Worker Application)



eXTRAS Net Elements (2)

6

• Gateway(s)

– Packet Data (PD), Short Messages (SDS)

– Telephone Interfaces (ISDN, PABX / PSTN, VoIP)

• Central Recorder (option)

• Key Management Server (option)



Portable Terminals

7

• Terminals to operate the TETRA features

• Peripheral equipment interface (PEI)

• Audio amplification

• 1 W or 1.8 W HF power (adjustable)

• Software tools to program and configure the terminals

• Application specific devices (e.g. with GPS)



Mobile Terminals

8

• Vehicle integration for example

• 10 W transmission power (adjustable)

• Peripheral equipment interface (PEI)

• Audio amplification

• 12 V onboard supply

• Gateway or repeater mode is supported (licence)

• Separate operating module, easier integration

• Application specific devices (e.g. with GPS)



Base Station

9

• Provides the air interface of a site

• Operates the data connection (TCP/IP)

• Signalization via TCP/IP

• Operates the voice transmission via IP (RTP)

• Monitors the components of the base station

• Ensures that all required services are up and running

• Integrates the HF subsystem in the cabinet

• Supports the TETRA stand alone mode



TETRA Switch

10

• Switching of TETRA coded voice packets

• Connection via IP

• Signalization via TCP/IP

• TETRA coded voice transmission via IP (RTP)

• Ensures that all required services are up and running



Network / Subscriber Management

11

• Monitors all nodes of the net

• Displays the properties of net elements

• Supports maintenance and failure diagnostic

• Logging of the system events

• Collects statistical data

• Trend and WEB reports

• Used for system administration tools too

(SUM, Configuration Tool, SCC)



Dispatcher

12

• Graphical user interface to operate the TETRA features

• Based on MS Windows® operating system

• LAN is used to connect several positions

• Standard PC (USB audio devices)

• Audio equipment according to the requirements

• Connected via Ethernet (TCP/IP)

• Voice connectivity (TCP/IP, voice G.711 via RTP)

• Options: RF Dispatcher(s), DGNA, AVL, Lone Worker



Gateway

13

• Device to connect the TETRA network to other public or private networks

• Different types according to the application:

– Gateway Server

Realizing the voice interface(s) of the TETRA network, e.g. to an ISDN line,

the LAN of the dispatcher(s) or VoIP

Additional the data interface(s) (e.g. SDS, PD) are supported by the gateway

– Central Recorder (Option)

Recording the TETRA coded voice,

converts the records to the WAV format for playback

• Integration with TETRA Switch is supported



Central Recorder (Option)

14

• Recording of TETRA coded voice packets

• Conversion to the WAV format

• Supports the playback function

• Connection via Ethernet (TCP/IP)

• Data and signalization via TCP/IP

• Voice connectivity via RTP



Key Management Server (Option)

15

• Manages the keys for the eXTRAS infrastructure

• Provides the keys for the base stations

• Imports the Static Cipher Key Numbers (SCKN)

• Switches the keys



Questions

16



Base Station FR400 (1)

17

• HF Subsystem• Rack FR400

– CPU FR400

– Bridge Module FR400

– Transceiver Module FR400 – Power Supply Unit FR400

– Fan Tray FR400

• Cabinet Power Supply



Base Station FR400 (2), Rack

18

• SPCI system bus and transceiver PCI bus

1 CPU FR400

2 Bridge Module FR400

3 Transceiver FR400

1 2 3 4

5

4 Power Supply FR400

5 Fan Tray FR400



Base Station FR400 (3), HF Subsystem

19

• The HF subsystem may contain of the following

components:

– Duplexer FR400

– Receive filter FR400

– 2-way combiner FR400

– 4-way combiner FR400



Base Station FR400 (4), HF Config. Example

20

2 carriers with without diversity Antenna

TX/RX

Used HF subsystem:

one 2-way combiner,

one duplexer

Antenna

TX/RX Antenna RX

Used HF subsystem:

one 2-way combiner,

one receiver filter,

one duplexer

2 carriers with without diversity



TETRA Switch FTS100

21

HP ML350 G6

with operating system MS Server 2003

2 hard drives min. 146GB,RAID 1 configuration (mirrored)



Gateway

22

• HP ML350 G6 with operating system MS Windows Server 2003

two hard disks min. 146 GB (RAID 1, mirrored)

• Provides the voice gateway(s)

(e.g. ISDN, Dispatcher LAN, VoIP)

• Provides the data gateways

(SDS, E-Mail, PD)

• Integrated with the TETRA Switch

• Special connections (e.g. ISDN lines) via Cisco router



Network / Subscriber Management

23

HP ML350 G6 with MS Windows Server 2003

two hard disks min. 146GB, (RAID 1, mirrored)

SNMPc Server to collect and provide the network and satus

information

SNMPc Client retrieves the information from the server

SNMPc Server and Client integration on one PC possible

Used for system administration tools too

(SUM, Configuration Tool, SCC)



Dispatcher (1)

24

• E.g. HP Compaq Elite 8100

• MS Windows XP Prof. or Windows 7

• Special application (GUI)

to use the TETRA features

• Optional: various USB devices



Dispatcher (2), Overview USB Devices

25



Central Recorder (Option)

26

• Server: HP ML350 G6 with MS Server 2003

two hard drives min. 146 GB (RAID 1, mirrored)

• Records the TETRA coded voice packets

• Converts the records into the WAV format for the playback

function (playback client included)

• TETRA coded voice via RTP



Key Management Server (Option)

27

• Server: HP ML350 G6 with MS Server 2003

two hard drives min. 146 GB (RAID 1, mirrored)

• Manages the static cipher key numbers (SCKN)

for the eXTRAS infrastructure



IT Infrastructure (1), Examples

28

• Cisco 2911, integrated service router,

modular with HWIC modules

(e.g. E&M= analogue gateway, ISDN modules,

switch modules)



IT Infrastructure (2), Examples

29

• Managed QoS Layer 2 Switch(es)

e.g. HP ProCurve 2510-24

• KVM switch

e.g. Aten



Questions

30



Tools, Dispatcher (1)

31

• Voice functions

– Individual call (duplex/simplex)

– Monitoring of 10 group calls

– Broadcast

– Emergency call

– Hold

– Call to PABX/PSTN systems

– Short time recording (last hour)

– DGNA

• Other functions

– Status messages

– Short and text messages

– Patch

– Exclusivity

– Multiselect

• Options

– 3T Object Tracker (AVL)

– Lone Worker Application



Tools, Dispatcher (2)

32



Tools, Network Management SNMPc

33

• SNMPc (Enterprise/Workgroup Edition)

• Monitoring of active network nodes

• Diagnosis of potential nonconformities

• Properties of several network nodes

• Collecting of statistical data

• Logging of system events

• Logging of operational events (e.g. calls)

• Trend or WEB reports



Tools, Subscriber Management (1)

34

• Supports multiple organizations

• Definition of ISSIs, GSSIs

• Definition of service classes (= permission templates)

• Configuration of the group memberships

• System Timers (e.g. inactivity, call duration)

• Parameter Activation




35




36



Tools, Configuration Tool (1)

37

• Management of System Parameters (Configuration)

• Generation of Configuration Files

• Activation of Parameters

• Back-up of System Definitions

• Update the Baseline

• Essential system settings = Baseline

• System settings are managed as Revisions

• Working Copy = can be modified

• Freeze = read only set of system settings



Tools, Configuration Tool (2)

38



Tools, Software Control Center

39

• Distribute and activate software updates

• Central storage area stores the necessary files of the updates

• Each network node storesthe received files locally

• Graphical user interface

• Executed on the NWM server

• Display of the current versions



Tools, Retrieve Client (Central Recorder) (1)

40

• Records TETRA coded voice packets

• Signalization via Ethernet link

• Decoding of the records into the WAV format

• Playback with the retrieve client

• The records can be saved for archiving

• Filter is supported



Tools, Retrieve Client (Central Recorder) (2)

41



Tools, 3T Object Tracker (1)

42

• Presents GPS positioning data

• Presentation with a map

• Individual subscribers or group of subscribers

• Detailed information of ISSI

• Presentation of Emergency status

• Locate individual subscribers (ISSI)

• Locate terminals without positioning data

• Local map cache or www.openstreetmap.org



Tools, 3T Object Tracker (2)

43



Tools, Lone Worker Application (1)

44

• Manages ISSIs of lone workers

• Manages the SDS polling properties

(e.g. polling cycle, ACK request repetitions, ACK waiting time)

• Activate/deactivate ISSIs

• Displaying alarms

• Alarm History (log file)

• Integration on NMS client or Dispatcher



Tools, Lone Worker Application (2)

45



Tools, Traffic Load Tool (1)

46

• Traffic load tool calculates load of individual BS

• Traffic load can be graphically depicted

• Statistics based on various criteria

• Based on the call data of the log files (calls_*.log)

• Display can be saved as image

• Display can be printed



Tools, Traffic Load Tool (2)

47



eXTRAS SOLO (1), Overview

48

• Single carrier stand-alone TETRA base station

• 3 traffic channels, one main control channel

• 25 W HF (reference point: antenna output connector)

• Free standing operation supported

• Integration in a 19” rack possible

• W × D × H: 450 × 290 × 230 mm³, W x H: 19” x 6 HE

• 19.5 kg



eXTRAS SOLO (2), Overview

49

• AC PSU: 100 … 240 V

• Max. current consumption: <0.9 A (230 V AC)

• Total power consumption: <185 W

• Temperature: -10 … +55 °C

• Relative humidity (without dewing): 5 … 95 %



eXTRAS SOLO (3), Front View

50



eXTRAS SOLO (4), Two Carrier Configuration

51

• Two co-located (up to one meter apart) SOLO BSs

• Inter-connected in a master slave configuration

• Supporting 8 logical channels



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