Guangzhou Optical Bridge Communication Equipment Co., Ltd.
Main products:Video Optical Transmission,Tiber Optical Media Converter,Ethernet Over E1 Converter,Tiber PCM Multiplexer,PDH Multiplexer
Contact Us
  • Contact Person : Ms. xiao yanqun
  • Company Name : Guangzhou Optical Bridge Communication Equipment Co., Ltd.
  • Tel : 86-020-82319302,13760887412
  • Fax : 86-020-82329792
  • Address : Guangdong,Guangzhou,NO.393 MID ZhongShan Avenue,TianHe District
  • Country/Region : China
  • Zip : 510660

8channel voice POTS over E1 pcm multiplexer

8channel voice POTS over E1 pcm multiplexer
Product Detailed
1.Realize long-distance monitoring of local device to the remote device 2.8 voice channels, support caller ID and anti-polarity
GQ4008 8 channel voice POTS over E1 PCM multiplexer

       GQ4008 Voice over E1 PCM Mux can provide 1-8channels voice signal(FXO,FXS) and 1channel 10/100M Fast Ethernet, which realized phone lines and Ethernet signal distance extensions through E1 channel. It is a point-to-point transmission equipment developed based on FPGA Chips.


      GQ4008 use TDM (Time Division multiplexing)DBA technology to multiple variety of service signals to E1 channels, to realize multi-service access function, more suitable for users with many types of service , the device offers a variety of service interfaces to support voice,Ethernet,RS232 etc.

      GQ4008 is perfect monitoring and alarm, high integration rate ,low power consumption, steady performance, convenient used. It is extensively used in the dedicated networks for power, finance,transportation and police to implement integrated access of voice and data.

 The Image of Product
 The Interface of GQ4008

      1.E1 interface , 75/120 Ohm optional

      2.Voice (or other service ) interface  RJ45 connector

      3.Power outlet and Switch

      4.Function settings  DIP Switch

      5.Indicators(system,voice and other)

      6.Ethernet Indicator

      7.Ethernet interface RJ45 connector

      8.Equipment grounding

Developed from the integrated circuit with our own property rightRealize long-distance monitoring of local device to the remote deviceProvide 1~8 voice channels, support caller ID and anti-polarity chargeSupport FXO and FXS, FXO connect with SPC Exchange, FXS connect with telephoneProvide 1 channel Ethernet interface, supports AUTO-MDIX( cross over and straight through self adapt)Ethernet supports rate of N*64k(N=1~32),which can be regulated from 64K to 1098KProvides two clock types :E1 master clock, E1 line clockSupport 75Ohm unbalanced or 120Ohm balanced impendence Supplied with perfect function of status indication to facilitate maintenance and management

E1 Interface

Bit rate:2.048Mbps

Impedance:75ohm unbalanced or 120ohm balanced

Line Code: HDB3, compliance with ITU-T G.703

Electric features of digital interface:compliant with ITU-T G.703 recommendations

Jitter transfer performance: compliant with ITU-T G.823 recommendations

Clock type: Internal clock, line clock

Physical Connetor: RJ 45 or BNC coaxial

Voice Interface FXO(FXS)(RJ45/RJ11):

Standard:conforms toThe Telephone Switch Devices Technology Reference of the Ministry of Posts and Tele Communication

Line code:PCM,64Kbps/per line

Foreign Exchange Office

Alternate Input Impedance:200+680//0.1 Ω

Ring Voltage:35~150V

Ring Frequency :17~60HZ

Return Loss:20 db

Foreign Exchange Station

Alternate Input Impedance: 200+680//0.1 Ω

Subscriber Line Impedance:low than 1KΩ

Peak to Peak amplitude of Ring Voltage:110~150V

Ring Frequency:22~28HZ

Feeding Voltage:48V

Return Loss:20 db

Ethernet Interface

Port Number:1

Speed: 10/100Mbps full/half duplex auto-negotiation


Interface specification: compliance with IEEE-802.3u

RS 232 interface

Electric features of digital interface: compliant with RS232/V.24 recommendations

Transmission rate :asynchronous≤19200bps


Operating Temperature: 0 to 70°C (32 to 158F) 5 to 95% RH

Storage Temperature:   -40 to 85°C (40 to 185F) 95% RH

Power Requirements

Power Input: AC /DC optional

DC power: DC-48V (-36V~-72V )

AC power: AC220V (185~265V)

Power Consumption: <15Walt

Mechanical Specifications

Dimensions: 485 mm(Weight)×221(height)×44 (depth)

8channel voice POTS over E1 pcm multiplexer

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