The FWT meets to the China National Communication Standards YD/T884-1996. It also accord with the Europe Communication Standards. It is permitted to use in GSM/CDMA network.   GSM/CDMA network is a worldwide cellular technology used communication system. The FWT can be used in different countries’s GSM/CDMA network. You can make calls and receive calls with the FWT ,the same as using PSTN phone.

FUNCTION
1) GSM 850MHz 900MHz 1800MHz 1900MHz 
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) CLIR(Calling Line Identification Restriction)
9) single-handed power switch
10) LED indicating Hook On/Off,Talking,signal intensity,Power On/Off
11) set dialing delay time
12) talking DTMF Automatic dialing to GSM & CDMA to voip gateway & PABX(Optional)
13) SPK & MIC volume regulate
14) Simple to install and easy to maintain
15) Steady module & reliable design ensures good performance
16) Strong signals with high gain antenna
17) No noise & Clear voice
18) Suitable for wide voltage range & Low power consumption
19) Suitable for all kinds of weather & environment
20) Offer keypad command sets to difine functions