The main application is: Connecting the RJ-11 FXS line to connect Ordinary telephone set for voice call, to connect PBX for call extentions, to connect billing systems for public phone use, to connect VoIP gateway to realize VoIP call termination, to connect alarm system for security purpose, etc. It is not a VOIP gateway, nor a GSM+VOIP gateway, It is a GSM Fixed Wireless Terminal that produces a Analog FXS phone line.

Features:
1.a 8 channels GSM Gateway that has 8 ports FXS interfaces
2.It can connect with ordinary telephone set,PBX or VOIP Gateway,call back system etc.
3.it is comptiable with Arsterisk
4.SIM card supported (1.8V, 3V)
5.use new industrial module
6.caller ID display
vide polarity reversal for metering
8.4 sim cards can rotate by using time or call out times
9.IMEI changeable
10.hide caller ID avaiable

Technical Specifications
Air interface standard: GSM850/1900Mhz,900/1,800Mhz phase 2+ full band
Frequency ranges:
 A) GSM 850                             GSM 1900:
 I) Transmission: 869.2 ~ 893.8MHz      I) Transmission: 1, 930 ~ 1, 990MHz
 Ii) Reception: 824.2 ~ 848.2MHz        Ii) Reception: 1, 850 ~ 1, 910MHz
 B) GSM 900:                            GSM 1800:
 I) Transmission: 890 ~ 915MHz          I) Transmission: 1, 710 ~ 1, 785MHz             
 Ii) Reception: 935 ~ 960MHz            Ii) Reception: 1, 805 ~ 1, 880MHz
Phone interface: supply RJ-11 Phone Interface
Picking off voltage: 30mA / 41mA
Antenna interface: Antenna amplifying>1.5db
Transmitting power<3W
Adapter interface:INPUT:AC 175~260V
OUTPUT:+12V/1000MA

Environment noise: <60DB
Sensitivity: <-104dbm
Antenna Amplifying: >1.5db
Dialing frequency: 450Hz
Hanging voltage: 45V