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GP-632-3G 3G/GSM VoIP Gateway

GP-632-3G is the 3G GSM VoIP Gateway. It connects 3G/GSM Network with VoIP Network directly, and has function of two-way communicating by 3G/GSM to VoIP or VoIP to 3G/GSM.  



  1. Compatible with SIP RFC543, RFC3261.
  2. Compatible with Asterisk.
  3. Call termination (VoIP to 3G/GSM and 3G/GSM to VoIP).              
  4. High-quality voice.
  5. Support UPLINK (GSM to VoIP), DOWNLINK (VoIP to GSM) Routing..
  6. Upgrade Firmware by Internet.
  7. Web browser for status checking and settings.
  8. Support SIP Proxy, or point to point application.
  9. GP-630 with 1 port; GP-632 with 2 ports.
  10. GP-630/GP-632: GSM 850/900/1800/1900 MHz.
    GP-630-3G/GP-632-3G :UMTS 2100/850/800MHz, GSM  850/900/1800/1900 MHz.



      The different specifications of GP-63X:

Work with 3CX phone system

Configuration guide

Test : extention<->3CX<->
          VoIP Gateway<->GSM/PSTN


    VoIP:    Network Protocol:     Voice Quality:
  • Web Browser
  • Uplink Route Setting (GSM to VoIP)
  • Downlink Route Setting (VoIP to GSM)

  • SIP v1 (RFC2543), v2(RFC3261)
  • DHCP Client/ PPPoE Client
  • DNS Client

  • VAD: Voice activity detection
  • CNG: Comfort noise generator
  • LEC: Line echo canceller
  • Packet Loss Compensation
  • Adaptive Jitter Buffer

    Cellular:     NAT Traversal:
  • Quad-Band 850/900/ 1800/ 1900 MHz
  • Compliant to GSM phase 2/2+
  • Class 4 (2W@ 850/900 MHz)
  • Class 1 (1W@ 1800/1900MHz)
  • UMTS 2100/850/800 MHz
  • STUN