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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: Etross
  • Model Number: Etross-8848G
  • Type: GSM
  • Port Number: 2
  • Working Frequency: GSM850/900/1800/1900MHz
  • Certificate: CE
  • Connection mode: RJ-11 phone socket
  • Color: White/Black(Optional)
  • Dimensions (L x W x H): 185 x 135 x 22mm
  • Caller ID: DTMF/FSK
  • Warranty: 1 Year
  • Weight: 800g
  • Battery: Support

Packaging & Delivery

Packaging Details Standard carton(20pcs/carton)
Delivery Time In 1~3 days after payment

Brand: Etross or OEM brand
Model No.: Etross-8848G
Product name: GSM FWT fixed wireless terminal/GSM gateway/GSM FCT fixed cellular terminal/GSM WLL/Analog FXS Gateway/Voice Call termination
Frequencies: Quad band 850/900/1800/1900MHz Dual band 900/1800MHz


General Description:
Etross-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: Connecting 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.


Sketch maps of connecting with phones,voip gatewa,PBX system,alarm system,billing device:












Main function & Features

1) Simple to install and easy to maintain

2) Steady industrial module(SIM340) and reliable design ensures good performance

3) Provides optimized circuit directly connecting the exchange device for Extensions

4) Compatible to most telephones, PBX and VoIP gateways (for call Termination)

5) Connect to Alarm systems to realize wireless alarm(for security use)

6) Strong signals with high gain antenna

7) Support SIM card (1.8V,3V)

8) Support DTMF 2'nd dialing out

9) DTMF CLIP(Caller ID display)

10) Hide subscriber caller id (been sent out)

11) Provides reversal polarity signal for metering

12) Signal indiator and power indicator and working status indicator

13) Suitable for wide voltage range and low power consumption

14) Suitable for all kinds of weather and environment

15) Locking PIN / network (optional)

16) GPRS function(optional)

17) Support IMEI change(optional)

18) Back up li-ion battery(optional)


1) Air interface standard: GSM850/1900Mhz,900/1,800Mhz phase 2+ full band

2) 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

3) Channel space: 200kHz

4) User line, bell signal: In line with GB/T15279

5) Max power: 0.25W / 0.5W

6) Consumption:

    A) Immobility: Less than 25mAh

    B) Transmission: Less than 400mAh

7) Sensitivity: -105dB

8) Dial tone frequency: 450MHz (standard)

9) Surrounding temperature: -10°C ~ +40°C

10) Relative humidity: 45% ~ 90% (without frost)

11) Atmosphere pressure: 86 ~ 106KPa

12) Environment noise: <60dB

13) Antenna amplifying: 3.5dB (omni directional), 12dB (certain direction /Chosen direction)

14) AC power: DC 10V - 20V

15) Input: AC100 - 230V, 50 / 60Hz

16) Output: 12V 1A

17) Switching type / transformer type AC adapter (optional)

18) Connector of power: US or European type

19) Dimensions (L x W x H) (average): 185 x 135 x 22mm

20) Weight:

     A) FWT: 400g

     B) Full set with AC adapter, antenna and box: 800g

21) Colors: White/grey/black (optional)

22) Connection mode: RJ-11 phone sockets

23) Antenna connection: SMA antenna connection

Standard Component





GSM FWT 8848



User's Manual





SMA antenna

Power Supply


 Input: AC100 - 230V, 50 / 60Hz , Output: 12V 1A




Inner box MEAS




Carton MEAS







Warranty: one year


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