Product Details

GSM FWT SC-4QS is a newly designed 4 ports GSM to POTS (Plain Old Telephone Service) line Converter, also known as Fixed Wireless Terminal. The device has 4 line connections that allow 4 regular analog telephones to be connected to 4 Cellular GSM service just like connecting to 4 local PSTN (Public Switched Telephone Network) land-lines. Your calls are connected on the GSM network. This device receives and makes phone calls.

Model GSM FWT SC-4QS is 4 GSM modules + 4 FXS ports.

Model GSM FWT SC-4QO is 4 GSM modules + 4 FXS ports + 4 FXO ports .

1. 2, Installation and Connections

The GSM FWT SC-4QS has to be in an area with a good GSM network coverage. Poor signal may affect the quality of the voice.
Insert the SIM card into the SIM card holder at the back of the GSM FWT SC-4QS.
Connect the antenna. In order to ensure a good quality of voice, it is recommended to locate the antenna at least 1.5m from the telephone and from the GSM FWT SC-4QS.
Plug the RJ-11 cable to the back of the GSM FWT SC-4QS marked as FXS (1-4) and the other end to your telephone.
Plug the Power Adapter to the wall power socket and its 12v plug to the Power (PWR) connector on the back of the GSM FWT SC-4QS.
Your Telephone will ring twice when the GSM FWT SC-4QS has completed the boot process, it takes about 5 seconds.
You can make and receive calls after you can hear the Dial Tone on the telephone and Network Signal indicator (GSM) is ON.

GSM FWT SC-4QS Connection Diagram

Back Side

FXS	4 RJ11 POTS connectors,FXS to connect 4 Telephones or PBX
FXO	4 RJ11 to connect to PSTN line (Only Available to Model GSM FWT SC-4QS/O.
Power input	12v from your Power Adapter
Antenna connection	4 SMA Connector for the GSM antenna
LEDs	LED indicators for status (see LED display explanation)
SIM card slot	4 SIM card slots

LED Display

Power (red)	Device Powered On indicator
FXO (green)	On when the FXO is in use
FXS (orange)	On when the FXS is in use
GSM(green)	On when the talking is going on

3, Functions & Features

Brand Name: SunComm or OEM
Model Number: SC-4QS
Type: GSM (GSM FWT SC-4QS) GSM + PSTN (GSM FWT SC-4QS/O)
Port Number: SC-4QS: 4 ; SC-8QS/O: 8
SLIC(FXS): 4
DAA (FXO): 4
SIM Card slot: 4
IMEI changeable: support
LCR(Low cost routing): support
SMS management: support
lock network operator: support
Number transfer: support

Use advanced Silicon Lab slic (FXS) and DAA (FXO) solution, the compatibility and the voice quality are in the high-level standard.

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

5. Number transformation function

6. Number Canada dials the function

7. The operator locks the function

8. The FXO mouth has escapes the function

2. 4, Technical Specifications

Air interface standard: Quad band

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

Module employed: Quectel M35

Phone interface: supply RJ-11 Phone Interface
Hanging voltage: 45V
Dialing tone Frequency: 450Hz
Antenna interface: Antenna amplifying >2.5db
RF Sensitivity: <-104DBM
Transmitting power: <3W

Operation temperature: -10c-60C
Storage temperature: -20C-70C
Operation humidity: 45% - 95%

Color: Black
AC-Adapter: Input: AC 110~240VAC 50~60Hz
Output: 12DC 1.5A.

AC-Adapter type: EU, US, AU, British (optional)