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GOIP is a Channels VoIP-GSMGateway. It is the GSM network and the VoIP network connecting seamlessly new Products. Mobile phone SIM cards will be installed in GOIP, users of GSM phones can be registered to VoIP Softswitchsystem. GOIP users can be achieved through the GSM network on the car alight. GOIP built-in SIP and H.323, configuration flexibility. SIP can be thoroughly used when electricity came display numbers. GOIP is PBX vendors, system integrators and provider of choice for both GSM Products GOIP Gateway enables direct routing between IP and GSM network without theuse of a FXO port or the PSTN network. With this device, the usage of VoIP is greatlyenhanced with significant savings on long distance and roaming charges.

Basic Features
  • LEDs for Power, Ready, Status, WAN, PC, GSM
  • Call forward from GSM to VoIP and VoIP to GSM
  • Dial in mode or dial out mode only
  • Dial Plan
  • Password protection for both GSM dial in or dial out
  • Retransmit GSM Caller ID to VoIP terminal
Supported Standards
  • ITU: H.323 V4, H.225, H.235, H.245, H.450
  • RFC 1889 -RTP/RTCP
  • RFC 2327 ?SDP
  • RFC 2833 ?RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
  • RFC 2976 ?SIP INFO Method
  • RFC 3261 ?SIP
  • RFC 3264 ?Offer/Answer model with SDP
  • RFC 3515 ?SIP REFER Method
  • RFC 3842 ?A Message Summary and Message Waiting Indicator
  • RFC 3489 ?Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)
  • RFC 3891 ?SIP ?Replaces? Header
  • RFC 3892 ?SIP Referred-By Mechanism
  • draft-ietf-sipping-cc-transfer-04 ?Session Initiation Protocol Call Control -Transfer
  • Codec: G.711 (A/? law), G.729A/B, G.723.1
  • DTMF: RFC 2833, In-band DTMF, SIP INFO
Key Features
  • Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2)
  • Single or Multiple Server Registrations
  • Two 10/100 Ethernet circuits connect to the LAN and an additional device
  • GSM module for making GSM calls
  • Speech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter buffer
  • VLAN and QoS support
  • NAT Transversal and Router functions
  • Voice prompts, HTTP Web, Auto Provision support for configuration and updates
  • Highly stable embedded Linux operating system in high performance ARM 9 Processor
Enhanced Features
  • Dynamic selection of codec
  • Advanced jitter buffer
  • Automatic traversal of NAT and firewall
  • VLAN / Qos
  • Router
  • Echo cancellation for Speakerphone
  • Comfort noise generation (CNG)
  • Voice activity detection (VAD)
  • Auto provisioning (requires auto provisioning server)
  • On line firmware upgrade
  • Multi-language support: English and Chinese
Special Features
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