GP-712 / GP-712A                                                                                                                   

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GSM/3G/4G SIP VoIP Router Gateway for all systems

The GP-712 is a revolutionary and innovative product. It Integrates VoIP and 2.4G Bluetooth technology in a device. This makes the connection free from the limitation of frequency and telecommunication provider to become more convenient and widely use. Therefore, it can also be widely used as GSM/CDMA/WCDMA/3G/4G VoIP Gateway.



  1. VoIP and Bluetooth Mobile full integration.
  2. Compatible with SIP RFC543, RFC3261.
  3. Support call Origination (BT to VoIP), call Termination (VoIP to BT).
  4. Integrated web server for status and settings.
  5. Support SIP Proxy, or point to point application.
  6. Option of one stage, fix number ; only GP-712 has free dial function.
  7. Bluetooth with auto pairing and auto searching function.
  8. QoS and Digital Transmit.
  9. Could use with GSM/CDMA/3G/UMTS/4G various Bluetooth mobile phones.
  10. 2 Bluetooth and 2 VoIP channels.


GP-710/712 demo1

Test 1: Free dial

Test 2: Fix number


GP-710/712 Setting Instruction

Hardware setting

Configure guide


Work with 3CX phone system

Configuration guide

Test : extention<->3CX<->VoIP Gateway

3  See the application of GP-712   

   VoIP:    Network Protocol:   NAT Traversal:
  • Web Browser
  • Call Orgination Setting (BT to VoIP)
  • Call Termination Setting (VoIP to BT)

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

  • STUN

   Power:    Voice Quality:
  • Interchangeable switching power adapter
  • AC plug type: US, EU, AU, UK
  • Features: High reliability, high efficiency, small size and power indicator
  • Input:AC100-240V, 50/60HZ
  • Output:DC12V/1000mA

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

  • Bluetooth Specification V2.
  • Carrier Frequency 2400MHz to 2483.5MHz
  • Modulation Method GFSK,1Mbps,0.5BT Gaussian
  • Output level, class 2
  • 10 meters working range