GOIP4 SIM Card Broadband Phone Gateway is a new product that connect the GSM and the VoIP seamlessly. To GOIP4 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 GOIP4 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 GOIP4 support multi-device group, it can be easily combined into arbitrary number of channels of Large Gateway Group.
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
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