4 ports GSM GoIP Gateway,Unlocked phone Description
The 4 channels GSM VoIP gateway is a 4 SIM Card Broadband Phone Gateway that had been developed by SKYLINE 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.
Key Features
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Multiple GoIP4 grouping mode
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Provide four cellular channels for IP-PBX
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Open Standard VoIP Protocols (ITU H.323 V4 and IETF SIP V2)
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Single or Multiple Server Registrations
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Two 10/100 Ethernet circuits connect to the LAN and an additional device
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GSM module for making GSM calls
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Speech quality ensured by QoS at the Ethernet and IP layers and comprehensive jitter buffer
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VLAN and QoS support
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NAT Transversal and Router functions
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Voice prompts, HTTP Web, Auto Provision support for configuration and updates
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Highly stable embedded Linux operating system in high performance ARM 9 Processor
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Basic Features
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LEDs for Power, Ready, Status, WAN, PC, GSM
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Call forward from GSM to VoIP and VoIP to GSM
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Dial in mode or dial out mode only
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Dial Plan
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Password protection for both GSM dial in or dial out
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Retransmit GSM Caller ID to VoIP terminal
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Enhanced Features
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Dynamic selection of codec
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Advanced jitter buffer
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Automatic traversal of NAT and firewall
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VLAN / Qos
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Router
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Echo cancellation for Speakerphone
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Comfort noise CNG)
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Voice activity detection (VAD)
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Auto provisioning (requires auto provisioning server)
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On line firmware upgrade
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Multi-language support: English and Chinese
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Hardware Specifications
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Processor: ARM9E 133MHz
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DSP: VPDSP101 196MHz
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Memory: RAM 16MB/ Flash 4MB
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GSM Module: Type: 850MHz, 900MHz, 1800MHz, 1900MHz
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Power: Input AC100V ~ 240V, output DC12V/2A +-10%
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Power consumption: 12W maximum
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Network card: 100/10Base-T x2
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LED: Operation and lines light
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GSM Passway:four
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Operating temperature: 10°C to 40°C (32°F to 104°F)
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Storage temperature: 0°C to 50°C (32°F to 122°F)
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Working Humidity: 40% ~ 90% Not congealed
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Weight: 450 g (1 lb) (Including AC/DC Adapter)
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Warranty: one year
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Supported Standards
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ITU: H.323 V4, H.225, H.235, H.245, H.450
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RFC 1889 - RTP/RTCP
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RFC 2327 SDP
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RFC 2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
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RFC 2976 SIP INFO Method
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RFC 3261 SIP
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RFC 3264 Offer/Answer model with SDP
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RFC 3515 SIP REFER Method
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RFC 3842 A Message Summary and Message Waiting Indicator
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RFC 3489 Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATs)
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RFC 3891 SIP Replaces Header
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RFC 3892 SIP Referred-By Mechanism
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draft-ietf-sipping-cc-transfer-04 Session Initiation Protocol Call Control - Transfer
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Codec: G.711 (A/µ law), G.729A/B, G.723.1
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DTMF: RFC 2833, In-band DTMF, SIP INFO
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