SZRUNSUN FWT:GSM Gateway /CDMA Gateway/WCDMA Gateway :
GSM 850M 900M 1800M 1900M ,  CDMA 800M , WCDMA 850M 1900M 2100M
.01) CDMA 450MHz 800MHz 1900MHz
02) Standard PSTN FXS with RJ-11 to telephone or voip gateway & PABX
03) regulation 400~500Hz Dial-tone and Busy-tone , Disconnect Tone
04) 50V in idle and 75V in ringing and 9-12V in talking
05) DTMF detector in RJ-11
06) Provide reverse polarity
07) Caller ID (DTMF,after ONE Ring)
08) One Number Unified
09) CLIR(Calling Line Identification Restriction)
10) Separate Power On/Off
11) LED indicating Hook On/Off,Talking,Signal Intensity,Power On/Off
12) Settable dialing delay time
13) Settable automatic dialing
14) Support to dial all number including of * #
15) DTMF Automaticly dialing to CDMA , to voip gateway , PABX(Optional)
16) SPK & MIC volume regulate
17) Provide accumulator charger interface (Optional)
18) Multiparty Calling teleconference (Special Optional)
19) Setable Maxim talking time to warn of exchanger card (Special Optional)
20) 4SIM Rotator Automaticly (Special Optional)
21) IMEI changing (Special Optional)
22) Radio Bases Changing Automaticly to simulate movement (Special Optional)
23) Simple to install and easy to maintain
24) Steady module & reliable design ensures good performance
25) Strong signals with high gain antenna and No noise & Clear voice
26) Suitable for wide voltage range & Low power consumption
27) Suitable for all kinds of weather & environment