Function of Popular GSM FWT:
1). GSM 850MHz 900MHz 1800MHz 1900MHz
CDMA 800MHz(Optional)
2). Standard RJ-11 to telephone or VoIP gateway & PABX
3). 450Hz Dial-tone and Busy-tone
4). 50V in idle and 75V in ringing and 9-12V in talking
5). DTMF detector in RJ-11
6). Precise reverse polarity
7). Caller ID (DTMF, ONE RING). To telephone or VoIP gateway & PABX
Caller ID (FSK). To telephone or VoIP gateway & PABX(Optional)
8). 1 CHL / 4 CHL / 8 CHL
9). 1 number calling in, then 8 GSM receiving
10). CLIR(Calling Line Identification Restriction).
11). Single-handed power switch
12). LED indicating Hook On/Off, Talking, signal intensity, Power On/Off
13). Set dialing delay time
14). Talking DTMF Automatic dialing to GSM & to VoIP gateway & PABX(Optional)
15). SPK & MIC volume regulate
16). Provide accumulator charger (Optional)
17). 4SIM automatic rotator (8 CHL 32 SIM cards)(Special Optional)
- Rotator by really clock(4 time clock)
- Rotator by dial times
- Rotator by total talking minutes
- Rotator by working hours
18). IMEI changing (Special Optional)
19). Simple to install and easy to maintain
20). Steady module & reliable design ensures good performance