[Asterisk-Users] GSM gateway for Asterisk

[Kanuri, Seshu (Company IT)]

Folks!

I am looking at a couple of models of Fixed GSM Gateways for the Purpose of VOIP connectivity and specifically to work with Asterisk. I found that  these can be imported into USA for about $99.99 or about that. This is a one channel unit just like tellular, one of them has GPRS.

FCT11M:
1)freq: GSM network,900/1800/1900Mhz,
2)provides reversal signal for payphone/billing
3)supports PBX and VOIP
4)for voice (no fax)
5)battery(optional)
6)can be used for the remote area where signal is weak.
 
FCT11G:
1)freq: GSM network,900/1800/1900Mhz,
2)provides reversal signal for payphone/billing
3)supports PBX and VOIP
4)for voice and GPRS (no fax)
5)battery(optional)
6)can be used for the remote area where signal is weak.

I am pasting an image of the network diagram here:

Specifications in text are below. I would appreciate for any feedback of their usability.

Seshu
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Description:
-----------
This unit can conveniently access to the available GSM system network. This system
possesses such a high receiving sensitivity and a large transmitting power that it expandsthe
effective coverage of the cellular network to a larger geographic area (upto 15 miles). 

The unit has been extensively used in the fixed access to the cellular network to solve the wired communications problems in the rural areas. It can also be used to develop fast radio public telephone services to satisfy the communications for the time being and work as the CO relay tosimplify the registration s and lower the cost. Furthermore it can meet the requirement of mobile communications onboard vehicles, ships, trains, etc. All these enlarge the number of the network subscribers considerably so that it can utilize the resources better. General Instructions How to link with a charger, Office PBX and VOIP 

Main functions
--------------
Payphone
Caller ID
Pin number locked (Optional)
Block prefix number (Optional)
Support OfficePBX
Support VOIP
Office PBX
VOIP

Description/ Unit Specifications
--------------------------------
UP MHz 890~915 1710~1755 1850~1910 
WorkingFrequency 
DOWN MHz 935~960 1805~1850 1930~1990
Transmitting power dBm 33
Receiving sensitivity dBm -104
Atmosphere Kpa 86~106
Power Specifications
Power mode: AC to DC
a. Switch adaptor (without battery) 110-220V to 5V or 7-12V, 50/60Hz, 1.25A
b. Switch adaptor (with Ni-MH battery) 110- 220V to 7.5V, 50/60Hz, 1.0A
Backup battery:
Standby: 20Hrs(Appr.) Continued Talking: 3Hrs(Appr.) 
Note:
a. The battery will give the power when the normal power is off, and the battery power will be off when the normal
power is On.
B. The battery is for back up power only, It is not designed for normal power use.

Quick Installation
1. Take off the cover of the SIM holder,
then put in a SIM card into the holder.
Receiving sensitivity dBm -104
2. Plug in a phone into the phone socket RJ-11
3. a. Install the antenna first, please screw the antenna tightly into the connector,
and put the antenna in the purpose place.
   b. Connect the power, and put power switch ON.
Power Specifications
Power mode: AC to DC
a. Switch adaptor (without battery) 110-220V to 5V or 7-12V, 50/60Hz, 1.25A
b. Switch adaptor (with Ni-MH battery) 110- 220V to 7.5V, 50/60Hz, 1.0A

Antenna information
-------------------
Frequency range: A:890 960MHz B:1710 1880MHz
Banwidth: A:70MHz B:170MHz
Gain: 2.15dBi or 5.5dBi (optional)
Impedance: 50Ù
Max Power: 50W
Connector Type: SMA
Size: Longth:30cm , 60cm and 100cm (optional)
Weight: 120g

Other Specifications
--------------------
Plastic cover: light blue or black
Size 183mm 124mm 32mm(l\w h)
G.Weight(complete set) 1.2Kg
Circumstances: a temperature -20 ~50 b relative humidity 5%~95%

Switches on the Box:
-------------------
ANT ON OFF
SET WORK
LOAD RJ11
Antenna
Power
Switch for power Switch for set or work
Set for factory only by now
Please put the switch on work
Load/USB for the factory only
Rj11 for phone line
Gain: 2.15dBi or 5.5dBi (optional)
Impedance: 50Ù
Max Power: 50W
Connector Type: SMA
Size: Longth:30cm , 60cm and 100cm (optional)
Weight: 120g 
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NOTICE: If received in error, please destroy and notify sender.  Sender does not waive confidentiality or privilege, and use is prohibited.