USED GSM Voip Gateway

The 4 channels GSM VoIP gateway is a the Latest 4 SIM Card Broadband Phone Gateway that had been developed by LinkSys Ltd. GoIP_4 SIM Card Broadband Phone Gateway is a new product that connect the GSM and the VOIPseamlessly. To GoIP_4 what is installed on the Mobile SIM Card, you register the GSM telephone on the VoIP Softswitch. SIP and H. 323 agreement are built in the GoIP_4 and configured flexible. Caller ID be seen by using SIP. Flexible routing meet the need of all kinds of call forwarding; Even more special is that GoIP_4 support multi-device group, it be easily combined into arbitrary number of channels of Large Gateway Group.