IMEI Changeable Quad-Band 1 SIM GSM Fixed Cellular Terminal

GSM Fixed Wireless Gateway Terminal with CE/RohS/FCC1 SIM 8848 GSM FWT, GSM FCT, Analog GSM Gateway2G GSM FWT fixed wireless terminal ETS-8848GSM fixed wireless terminal Quad-bandGSM FCT fixed cellular terminalGSM fixed wireless terminal  1. General DescriptionEtross-8848 is a GSM to Analog Converter(single port,insert 1 sim card only), the device can produce a FXS line to allow a regular phone to be connected and used just like a local landline(PSTN) except your calls will go out the GSM network. This device can both receive and make calls. The main application is:to connect the RJ-11 FXS line to connect Ordinary telephone set for voice call,to connect PBX for call extentions, to connect billing systems for public phone use,to connect VoIP gateway to realize VoIP call termination,to connect alarm system for security purpose, etc.It is not a VOIP gateway, nor a GSM+VoIP gateway, It is a GSM Fixed Wireless Terminal that produces a Analog FXS phone line.  1. The main applications:1)  Connecting the RJ-11 FXS line to an ordinary telephone set for voice call;2)  Connecting PBX for call extensions;3)  Connecting billing systems for public phone use; 4)  Connecting VoIP FXO gateway to realize VoIP call termination;5)  Connecting alarm system for security purpose,such as lift elevator system, security bugular systemWorking frequency: 2G GSM 850/900/1800/1900MHz.We have the same model for 3G WCDMA and 4G LTE, please contact me if you need it. 2. Features1) It is a 1 channel GSM Gateway which has 2 RJ-11 outputs for extensions;2) It can connect with ordinary telephone set, PBX , VOIP Gateway, Billing meter etc. ;3) Dialing tone frequency:450hz;4) Employ Industrial module to make;5) Can adjust dial interval from 0.5sec to 9 secs by setting up from telephone set;                                          6) Can adjust voice volume by setting up from telephone set;                               7) SIM card supported (1.8V, 3V);8) Caller ID display;9) DTMF Dialing;10) Bell signal;11) Polarity reversal;12) The RJ-11 socket which connect the phone or billing system for metering purpose;13) Antenna socket (SMA); 14) IP Presetting;15) Working status and Signal Strength by LED indicator;                                                 16) IMEI Change (optional).17) back up Li-ion battery( Optional)       3.Technical Specifications:Phone interface:supply RJ-11 Phone InterfaceHanging voltage:45VPicking off voltage:30mA / 41mADialing tone Frequency:450HzAntenna interface:Antenna amplifying>2.5dbSensitivity: