Transcript
Telecom Training Presented by Daniel Koczwara EnGenius Telecom FAE 1
Agenda 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
The RSSI Tool and site survey information 2-way radio repeater base Custom naming the handsets Custom programming the phone book Wireless phone book transfer Restoring a registration ID Remote registration via admin handset Advanced volume adjustments Indoor external antenna New advanced menu options: Speed dial, Pre-PA group, and programming the HOLD key Also: New: Text to phones via TAP protocol. 2
The RSSI Signal Measuring Tool - 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.
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Initial test results of a single story department store site survey with four PRO base stations 1
RSSI: -80dBm base 00 RSSI: -87dBm base 01 RSSI: -65dBm base 02 RSSI: -75dBm base 03
Stock Room 2
RSSI: -81dBm base 00 RSSI: -93dBm base 01 RSSI: -69dBm base 02 RSSI: -78dBm base 03
RSSI: -58dBm base 00 RSSI: -61dBm base 01 RSSI: -51dBm base 02 RSSI: -53dBm base 03
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External antenna RSSI: -75dBm base 00 RSSI: -83dBm base 01 RSSI: -63dBm base 02 RSSI: -75dBm base 03
RSSI: -50dBm base 00 RSSI: -50dBm base 01 RSSI: -50dBm base 02 RSSI: -58dBm base 03
IDF
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Test Point 3
RSSI: -88dBm base 00 RSSI: -95dBm base 01 RSSI: -78dBm base 02 RSSI: -87dBm base 03
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Entrance
RSSI: -67dBm base 00 RSSI: -76dBm base 01 RSSI: -56dBm base 02 RSSI: -70dBm base 03
RSSI: -54dBm base 00 RSSI: -67dBm base 01 RSSI: -54dBm base 02 RSSI: -68dBm base 03 RSSI: -60dBm base 00 RSSI: -68dBm base 01 RSSI: -60dBm base 02 RSSI: -75dBm base 03
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* Store approx. 200 ft x 300 ft. (62,000 Sq. ft.) 4
After Changes Made 1
RSSI: -68dBm base 00 RSSI: -78dBm base 01 RSSI: -59dBm base 02 RSSI: -67dBm base 03
RSSI: -52dBm base 00 RSSI: -55dBm base 01 RSSI: -50dBm base 02 RSSI: -50dBm base 03
Stock Room 2
RSSI: -70dBm base 00 RSSI: -81dBm base 01 RSSI: -61dBm base 02 RSSI: -69dBm base 03
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External antenna
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RSSI: -70dBm base 00 RSSI: -75dBm base 01 RSSI: -60dBm base 02 RSSI: -68dBm base 03
IDF 5
Test Point 3
RSSI: -77dBm base 00 RSSI: -83dBm base 01 RSSI: -69dBm base 02 RSSI: -80dBm base 03
RSSI: -50dBm base 00 RSSI: -50dBm base 01 RSSI: -50dBm base 02 RSSI: -55dBm base 03
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Entrance
RSSI: -67dBm base 00 RSSI: -76dBm base 01 RSSI: -56dBm base 02 RSSI: -70dBm base 03
RSSI: -52dBm base 00 RSSI: -62dBm base 01 RSSI: -53dBm base 02 RSSI: -62dBm base 03 RSSI: -55dBm base 00 RSSI: -62dBm base 01 RSSI: -59dBm base 02 RSSI: -69dBm base 03
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* Results after moving antennas right-side-up and moving them > 1 ft. from metal.
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RSSI testing for Intercom/Broadcast versus Line Access Range • 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
to l a Di
n
ink l e
db 8 -6
m
2-Way link -95dbm
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PRO Repeater Base 2-Way Intercom / Broadcast Repeater Long Range Wireless Intercom
(1)
Long Range 2-Way Radio
(1)
(2)
Or Enhanced Coverage for the DuraFon PRO 2-Way Radio & Intercom Up 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
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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 your coverage area. • Typical indoor meaning a house. In an area with lots of metal, this may increase to 20db or more. •** These generalities are specific to frequencies between 400MHz and 5GHz.
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Estimated db Loss chart for 2.4GHz.
Note: Attenuation at 900MHz is typically 30-50% less (better) 9
Typical Attenuation at 900MHz RF Barrier Timber Plastic Drywall Asbestos Glass Water Brick Marble Paper Concrete Bulletproof Metal
Relative decline 1-4db 1-4db 1-4db 1-4db 1-4db 5-8db 5-8db 5-8db 10db 10db 10db 20-25db
Example Office wall Wall Office wall Ceiling Window Water tank Wall Wall Wall paper Floor and wall Safety compartment Building (no windows) 10
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. 11
Margin - External Considerations ■ Weather - Rain, snow, electrical storms can potentially add attenuation or interference.
■ EMI / RFI producing equipment – In very close
proximity typically (<3 ft) can cause spectral noise (raises entire noise floor). Normal noise floor is -110dbm. If the noise floor is -100dbm then a received signal of -80dbm has only 20db of margin and coverage will be the same as -90dbm with no noise etc.
Its not how strong the signal is but rather how much SNR there is!
■ Other transmitters on the same frequency band – Can “desense” the receiver, which basically means it severely limits the receiver from receiving the desired signal. Again usually only an issue in very close proximity.
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Checking for other 900MHz devices • • •
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
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Custom Naming the Handset • DuraFon 1x = Menu 5,5 (custom naming) • DuraFon PRO = Menu 5,5,1 (custom naming)
PBX System
Ext. 100 Ext. 101 (Digital extensions) Ext. 102 Ext. 103
Desk Phone x100 Desk Phone x101 Desk Phone x102 Desk Phone x103
Durafon1X (analog port) ext. 200
Ext. 200 (Analog extensions) Ext. 201
Ext. 202 Ext. 203
Tip: Change “welcome” screen to display the extension number and user or department name.
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Custom programming the Phone Book • The Phone Book allows specialized characters to be stored such as the 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
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Wireless Phone Book Transfer • (PRO ONLY). The Phone Book allows wireless transfer to other or all 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 the phone 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 avoid any missed transfers. 16
Remote Registration via Admin Handset • 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.
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Advanced Handset Volume Adjustments • The handset has the option to adjust volume (gain) levels for both the 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). 18
The NEW Indoor External Antenna Expected July 2012, EnGenius will now offer an external antenna kit that is designed specifically for indoor use.
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– Comes with the same 20 meters (65 feet approx.) of LMR400 coax like the AK20L.
Comparison of A2CM9 & AK10 (on FreeStyl 1) 1
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Test Point
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- 50 - 55 - 60 - 65
RSSI
- 70 - 75 - 80 - 85 - 90 - 95 - 100
AK10 A2CM 9
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Text Messaging to Handsets via TAP Protocol / Serial Interface • 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 as such 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. RS-232 20
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:
[email protected]
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