8002B is a 8 Channels GSM FWT. It can produce a FXS line to allow a regular
phone to be connected and used just like a local landline(PSTN) except your
calls will go out the GSM network. This device can both receive and make
calls.

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.

1. It is a 8 Channels GSM FWT that has 8 ports FXS interfaces;
2. Each port has 1 SIM card (1.8V, 3V)
3. It can connect with ordinary telephone set, PBX, VOIP gateway, billing
meter etc.
4. It is compatible with Asterisk
5. Dialing tone frequency: 450Hz
6. Employ industrial module (850/900/1800/1900MHz)
7. Can adjust voice volume by setting up from telephone set
8. Caller ID display
9. DTMF dialing
10. Bell signal
11. Polarity reversal
12. The RJ-11 socket which connect the phone or billing system for metering
purpose
13. Antenna socket (SMA)
14. IP Presetting
15. Working status and signal strength by LED indicator
16. IMEI change