Shenzhen Skyline Technology Co., Ltd.
 Telecommunications > PBX >  four channels GSM voip gateway

four channels GSM voip gateway

Brand Name:
Model Number:
four channels GoIP
VoIP Gateway
GSM voip gateway
GSM channels:
four channels
four channels GSM voip gateway
Detailed Description

1 the new type of voip gateway.
2 four channels
3 gsm voip gateway for making calls
4 support ITU H.323 V4 and IETH SIP V2

Product introductiou:

   GOIP_4 is a 4 SIM Card Broadband Phone Gateway that had been developed by DBL Co.  

GOIP_4  SIM Card Broadband Phone Gateway is a new product that connect the GSM and the VOIP

seamlessly. To GOIP_4 what is installed on the Mobile SIM Card, you can register the GSM

telephone on the VOIP Softswitch.SIP and H.323 agreement are built in the GOIP_4 and configured

flexible. Caller ID can be seen by using SIP. Flexible routing can meet the need of all kinds of call

 forwarding; even more special is that GOIP_4 support multi-device group, it can be easily combined

into arbitrary number of channels of Large Gateway Group.


Product 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





     Supported standars:


    • 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/µ law), G.729A/B, G.723.1
    • DTMF: RFC 2833, In-band DTMF, SIP INFO

    We promise to offer you the right GOIP with best price and best service!We can also produce according to your requirement.We not only promise the good quality but also stable quality . Customer no need usually change suppliers again!If you have any problems about details please contact us.

    Company information:
        Shenzhen Skyline Technology Co., Ltd. established on 2007 in Japan. We is an exporter of China (Mainland) PBX products.    We have exported products to many other countries, such as North America South America Southeast Asia Africa Mid East Eastern Asia Central America. Our main business goal is to provide top quality products for our customers    We hope that we can cooperate with more customers from all over the world and sincerely welcome all of you!Please refer to our website at!
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    Room 301B,Electromechanical building,Hongling north and Taoyuan road acrossing,Luohu district,Shenzhen

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