Working Frequency: Quad band GSM 850/900/1800/1900MHZ
DAA (FXO): 4
sim card: 4
imei numbers NUMBER: changeable
LCR(Low cost routing): support
SMS manager: support
lock network operator: support
Number changing: support
ETS-4S is our newly designed GSM FWT with 4 GSM Module+4 FXS port +4 FXO (PSTN) port
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 .
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 has no signal.
1. Uses the world to be advanced SiliconLab Corporation SLIC(FXS) and DAA(FXO) plan, the compatibility and the sound quality are in the global advanced standard
2. Through SMS carries on the disposition to the equipment, convenient, direct-viewing
3. The digit dialing prefix establishment function, may realize GSM and Between FXO LCR route
4. The digit dialing length establishment function, the user does not need in the digit dialing to join finally#The number may also realize the fast digit dialing