1.General Description

GSM FWT-8828 is a GSM to analog converter with LCD display(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 applications are as below:

Connect RJ-11 FXS line to ordinary telephone set for voice call;

Connect PBX for call extensions;

Connect billing systems for public phone use;

Connect VoIP FXO gateway to realize VoIP call termination;

Connect alarm system for security purpose, etc.

2.Features: 

1) 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 0.5 sec to 9 secs by setting up from telephone set;                                         

6) Can adjust voice volume by command from telephone set;                              

7) SIM card supported (1.8V, 3V);
8) Caller ID display;
9) DTMF Dialing;
10) Bell signal;
11) Polarity reversal/12Khz/16Khz pulse billing
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 LCD display;                                              

16) IMEI Change (optional).

17) back up Li-ion battery( Optional) 7.2V 1000mAh.standby 24 hours,talking time: 2.5hours.

3.Technical Specifications:

Air interface standard: GSM850/1900Mhz,900/1,800Mhz phase 2+ full band 
Frequency ranges:
 A) GSM 850                                   GSM 1900:
 I) Transmission: 869.2 ~ 893.8MHz      I) Transmission: 1, 930 ~ 1, 990MHz
 Ii) Reception: 824.2 ~ 848.2MHz         Ii) Reception: 1, 850 ~ 1, 910MHz 
 B) GSM 900:                                  GSM 1800: 
 I) Transmission: 890 ~ 915MHz           I) Transmission: 1, 710 ~ 1, 785MHz              
 Ii) Reception: 935 ~ 960MHz              Ii) Reception: 1, 805 ~ 1, 880MHz 
Phone interface: supply RJ-11 Phone Interface
Hanging voltage: 45V
Picking off voltage: 30mA / 41mA
Dialing tone Frequency: 450Hz
Antenna interface: Antenna amplifying>2.5db
Sensitivity:<-104DBM
Transmitting power<3W

Color: White
AC-Adapter interface: Input: AC 110~240VAC  50~60Hz
                   Output: 12DC 1A.

AC-Adapter type: EU,US,AU,British can be optional

4.Operation Circumstance: 
Operation temperature: -10c~60C
Storage temperature:-20C~70C
Operation humidity:45%-95% 
Atmosphere pressure:86-106Kpa
Environment noise: <60DB
Transmitting Power:2W
Sensitivity: <-104dbm
Antenna Amplifying: >2.5db
Dialing frequency: 450Hz
Hanging voltage: 45V
Picking current: 30mA/41mA

5. Packing List