User`s manual

GSM&PSTN FWT-8848 User's Manual Version 1.1
2
1, General Description
GSM+PSTN fwt with LCR has the function to choose route automatically.
When you dial from GSM+PSTN fwt, it will check the prefix no. you preset into device. Then it
will call out through GSM or PSTN according to your presetting rules. And GSM /PSTN both
support call in.
When you are in the phone call through GSM, and at the same time, another phone call to pstn line,
the caller will hear busy tone. And vice versa.
It will dial out through GSM if you don't connect to PSTN or PSTN line is disconnected, and it will
dial out through PSTN if you don't insert SIM card or GSM network no signal.
Available:
 GSM 900/1800Mhz dual band, employing Wavecom Q2403A,SIM500W module to make;
 GSM 900/1800/1900Mhz Tri-band, employing Sim300z module to make;
 GSM850/900/1800/1900Mhz Quadband, employing M10, SIM540W module to make.
Appearance and Structure
Item GSM&PSTN FWT-8848 Remark
Appearance White/black
Material ABS (Acrylonitrile Butadiene Styrene)
Dimension 170mm×118mm×30mm Excluding antenna
Weight 400g Weight of Main unit
Power Switch Rocker switch
Power Socket 12V DC input
Phone interface RJ11 2 RJ-11 ports
Antenna interface SMA-female
LED display
No.1: Power, No.2.in use, No.3, in talk, No.4, Battery,
if have, No. 5-7, Signal strength
From left to right(front
side view)