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Telecom TrainingPresented by Daniel Koczwara

EnGenius Telecom FAE

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1. The RSSI Tool and site survey information2. 2-way radio repeater base3. Custom naming the handsets4. Custom programming the phone book5. Wireless phone book transfer6. Restoring a registration ID7. Remote registration via admin handset8. Advanced volume adjustments9. Indoor external antenna10. New advanced menu options: Speed dial, Pre-PA group,

and programming the HOLD key

Also: New: Text to phones via TAP protocol.

Agenda

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- Built-in to all v2 DuraFon handsets (built after April 2011)- The RSSI tool allows for a real signal value that can be used to see actual coverage

between base and handset or handset to handset- Reading shown in 1dbm increments and refreshes 1 time per sec.- -110dbm is the lowest (weakest) signal before loss of connection.- A 30db margin or a -80dbm signal or better is suggested for the most reliable link,

but -90dbm (20db margin) is usually acceptable.- Go to the website and find the “RSSI instruction sheet” under the Telecom

“Reference Guides” section.

The RSSI Signal Measuring Tool

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* Store approx. 200 ft x 300 ft. (62,000 Sq. ft.)

RSSI: -50dBm base 00RSSI: -50dBm base 01RSSI: -50dBm base 02RSSI: -58dBm base 03

RSSI: -54dBm base 00RSSI: -67dBm base 01RSSI: -54dBm base 02RSSI: -68dBm base 03

RSSI: -60dBm base 00RSSI: -68dBm base 01RSSI: -60dBm base 02RSSI: -75dBm base 03

RSSI: -75dBm base 00RSSI: -83dBm base 01RSSI: -63dBm base 02RSSI: -75dBm base 03

RSSI: -58dBm base 00RSSI: -61dBm base 01RSSI: -51dBm base 02RSSI: -53dBm base 03

RSSI: -81dBm base 00RSSI: -93dBm base 01RSSI: -69dBm base 02RSSI: -78dBm base 03

RSSI: -88dBm base 00RSSI: -95dBm base 01RSSI: -78dBm base 02RSSI: -87dBm base 03

RSSI: -67dBm base 00RSSI: -76dBm base 01RSSI: -56dBm base 02RSSI: -70dBm base 03

RSSI: -80dBm base 00RSSI: -87dBm base 01RSSI: -65dBm base 02RSSI: -75dBm base 03

Entrance

StockRoom

IDF

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Test Point

Externalantenna

Initial test results of a single storydepartment store site survey with four

PRO base stations

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RSSI: -50dBm base 00RSSI: -50dBm base 01RSSI: -50dBm base 02RSSI: -55dBm base 03

RSSI: -52dBm base 00RSSI: -62dBm base 01RSSI: -53dBm base 02RSSI: -62dBm base 03

RSSI: -55dBm base 00RSSI: -62dBm base 01RSSI: -59dBm base 02RSSI: -69dBm base 03

RSSI: -70dBm base 00RSSI: -75dBm base 01RSSI: -60dBm base 02RSSI: -68dBm base 03

RSSI: -52dBm base 00RSSI: -55dBm base 01RSSI: -50dBm base 02RSSI: -50dBm base 03

RSSI: -70dBm base 00RSSI: -81dBm base 01RSSI: -61dBm base 02RSSI: -69dBm base 03

RSSI: -77dBm base 00RSSI: -83dBm base 01RSSI: -69dBm base 02RSSI: -80dBm base 03

RSSI: -67dBm base 00RSSI: -76dBm base 01RSSI: -56dBm base 02RSSI: -70dBm base 03

RSSI: -68dBm base 00RSSI: -78dBm base 01RSSI: -59dBm base 02RSSI: -67dBm base 03

Entrance

StockRoom

IDF

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Test Point

* Results after moving antennas right-side-up and moving them > 1 ft. from metal.

Externalantenna

After Changes Made

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• Default for two-way radio and broadcast is handset to handset• Range for base to handset can be better due to ideal base

location or/and external antenna• Optional 2-way radio range extender base station

RSSI testing for Intercom/Broadcastversus Line Access Range

Dial tone link -68dbm

2-Way link -95dbm

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Enhanced Coverage for the DuraFon PRO 2-Way Radio & IntercomUp to:

• 12 Floors of in building penetration• 250.000 sq. ft. of facility coverage• 3000 acres of property coverage

• Supports (90) DuraFon and/or DuraWalkie Handsets• Works as a Stand Alone 2-way system

PRO Repeater Base2-Way Intercom / Broadcast Repeater

Long Range Wireless Intercom

(1) (2)

Long Range 2-Way Radio

(1)

Or

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General Rules of Coverage

• General Rules of RF regarding Range:• An increase of 6db in an open area will double the coverage area.

• Halving the frequency will double the range.

• An increase of 9db in a typical indoor environment will double yourcoverage area.

• Typical indoor meaning a house. In an area with lots of metal, thismay increase to 20db or more.

•** These generalities are specific to frequencies between 400MHz and5GHz.

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Estimated db Loss chart for 2.4GHz.

Note: Attenuation at 900MHz is typically 30-50% less (better)

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Office wall1-4dbTimber

Building (no windows)20-25dbMetalSafety compartment10dbBulletproofFloor and wall10dbConcreteWall paper10dbPaperWall5-8dbMarbleWall5-8dbBrickWater tank5-8dbWaterWindow1-4dbGlassCeiling1-4dbAsbestosOffice wall1-4dbDrywallWall1-4dbPlastic

ExampleRelative declineRF Barrier

Typical Attenuation at 900MHz

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How much signal do you have to play with?

• Our receiver is good for as low as -110dbm.

• Link reliability is proportional to signal margin (SNR):• 30db margin = Voice Quality: Excellent. Link Reliability: 99%.

• 20db margin = Voice Quality: Good. Link Reliability: 95%

• 15db margin = Voice Quality: Fair. Link Reliability: 90%

• Note: -110dbm – (-30db) = -80dbm signal received for 30db of margin etc.

• Note: This assumes no external RF interference that would reduce RX sensitivity.

• Within 200 feet direct line of sight between handset and base station antenna,signal has reduced to approximately -50 to -60 dbm.

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■ Weather - Rain, snow, electrical storms can potentially addattenuation or interference.

■ EMI / RFI producing equipment – In very closeproximity typically (<3 ft) can cause spectral noise (raises entirenoise floor). Normal noise floor is -110dbm.If the noise floor is -100dbm then a received signal of -80dbm hasonly 20db of margin and coverage will be the same as -90dbmwith no noise etc.

Its not how strong the signal is but rather how much SNR there is!

■ Other transmitters on the same frequencyband – Can “desense” the receiver, which basically means it severelylimits the receiver from receiving the desired signal. Again usually onlyan issue in very close proximity.

Margin - External Considerations

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• MetaGeek Wi-Spy 900MHz USB Spectrum Analyzer• Less than $300• Has a recording feature where a file can be emailed to us for analysis.

– http://www.metageek.net/products/wi-spy-900x

Checking for other 900MHz devices

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• DuraFon 1x = Menu 5,5 (custom naming)• DuraFon PRO = Menu 5,5,1 (custom naming)

Custom Naming the Handset

PBX System

Durafon1X(analog port)

ext. 200

Tip: Change “welcome” screen todisplay the extension number and

user or department name.

Ext. 200Ext. 201Ext. 202Ext. 203

Ext. 100Ext. 101Ext. 102Ext. 103

Desk Phone x100Desk Phone x101Desk Phone x102Desk Phone x103

(Analog extensions)

(Digital extensions)

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• The Phone Book allows specialized characters to be stored such asthe Flash, End, and Pause.– To store a Flash, press the TALK key once. An “F” will be entered.– To store END, press the TALK key twice. An “E” will be entered.– To enter a Pause, press the star key twice. A “P” will be entered.

• Each Pause adds 500ms of delay. A series of Pauses can be entered if necessary.

– Example: Nortel Norstar PBX Call Transfer to Joe.• Enter: F*70855E, name: JOE XFER (assumes Joe’s ext. is 855)

– Example: Avaya Partner ACS Overhead Page• Enter: F70, name: PAGE

– Example: Joe’s Walkie Handset ID24.• Enter: 24, name: 2-way JOE (assumes Joe’s Walkie is handset ID24).

– Example: Avaya IP Office Call Transfer to Joe.• Enter: F205E, name: JOE XFER

– Example: Avaya Partner ACS Line Retrieval• Enter F801, name: Line 1

– Example: Nortel Norstar PBX Call Park and Retrieval• Enter F*70100E, name: Call Park 100 (Parking)• Enter 100, name: PARK 100

Custom programming the Phone Book

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• (PRO ONLY). The Phone Book allows wireless transfer to other orall handsets.– First choose one phone and enter in all phone book entries you wish to

store (up to 90).– Using the phone you stored all entries in, go into Phone Book Options and

choose “Transfer”, then “Send”.– Next go to all handsets you wish to receive the transfer, and choose

“Receive”.– Now while the handset or handsets are waiting, go back to the phone doing

the transferring and choose TX ALL or TX ONE. Note, this refers to thephone book entries (sends the entire list or just the one you were last in).

– Choose either the handset ID or 00 for all you are sending to.– Make sure to have all handset pre-registered to the same base station, and

also all handsets are in very close range of the sending handset to avoidany missed transfers.

Wireless Phone Book Transfer

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• PRO only• From an admin handset (ID10 or ID11), press Menu 6,3 (REMOTE

REG). The display will then show “done”.– The base line lights will all light up and the base is now in registration mode

just the same as if you pressed the REG button on the base itself.• This feature is especially useful when the base is mounted up high and

out of reach.

Remote Registration via Admin Handset

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• The handset has the option to adjust volume (gain) levels for boththe microphone and speaker above or below the default setting.– This is useful for noisy environments where the earpiece may not be

loud enough, even when turned up to “6”.– The microphone gain might need to be turned down so less

background noise is heard in noisy environments.– Turning volume gain higher can also be helpful for a person that is

hard of hearing.

• Earpiece = Menu, star, star, pound, “VOL ADJ”.• Microphone = Menu, star, star, pound,• Find more detailed instructions on our website under “reference

sheets” (in the support section).

Advanced Handset Volume Adjustments

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• Expected July 2012, EnGeniuswill now offer an externalantenna kit that is designedspecifically for indoor use.

– Comes with the same 20 meters(65 feet approx.) of LMR400coax like the AK20L.

The NEW Indoor External Antenna

-100

-95

-90

-85

-80

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-70

-65

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-55

-50

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AK10

A2CM9

Test Point

RSSI

Comparison of A2CM9 & AK10 (on FreeStyl 1)

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• In BETA right now.• We modify a V2 1X base station and provide an RJ45 connection

on the back. The other end of the cable is a DB9 Female.– The DB9 will allow a serial connection to a PC.

• Even though the base itself is a 1X, it actually is programmed assuch like a PRO (only PRO handsets and PRO Walkies will work).

• With a text messaging program that has an option for TAP output(For example Nurse call systems).– The ID sent can

• “00” = ALL HANDSETS.• “xx” (meaning ID 10-99), a specific handset• “0x” (meaning ID 01-07), a group.

– Inquire within.

Text Messaging to Handsets viaTAP Protocol / Serial Interface

RS-232

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Q & A

If you are seeking a copy of this presentation,it will be posted on our website shortly

(under News&Events/webinars)

Please email us with questions or suggestions at:partners@engeniustech.com