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Quad Band GSM 4 Gateway 4 Channel GSM Voip Gateway Goip

$179.00 $89.50

1000 in stock

Quad Band GSM 4 Gateway 4 Channel GSM Voip Gateway Goip Description

Frequency: GSM 850/900/1800/1900MHZDescription: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. 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 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 Enhanced Features Dynamic selection of codex Advanced jitter buffer Automatic traversal of NAT and firewall VLAN / Qos Router Echo cancellation for Speaker phone Comfort noise generation (CNG) Voice activity detection (VAD) Auto provisioning (requires auto provisioning server) On line firmware upgrade Multi-language support: English and ChineseSupported StandardsITU: H.323 V4, H.225, H.235, H.245, H.450RFC 1889 – RTP/RTCPRFC 2327 SDPRFC 2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony SignalsRFC 2976 SIP INFO MethodRFC 3261 SIPRFC 3264 Offer/Answer model with SDP

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