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GoIP GSM Gateway bridges the GSM and the IP networks by enabling voice communications. It is ideal for VoIP to Local termination where a fixed telephone line (PSTN) is not available or for cellphone roaming via the a VoIP network. Significant savings on long distance charges can be realized.
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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
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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 codec
- Advanced jitter buffer
- Automatic traversal of NAT and firewall
- VLAN / Qos
- Router
- Echo cancellation for Speakerphone
- Comfort noise generation (CNG)
- Voice activity detection (VAD)
- Auto provisioning (requires auto provisioning server)
- On line firmware upgrade
- Multi-language support: English and Chinese
Supported Standards
- 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
Physical and Environmental
Operating temperature: 10°C to 40°C (50°F to 104°F)
Storage temperature: 0°C to 50°C (32°F to 122°F)
Weight:?? 500 g (1 lb) (Including AC/DC Adapter)
Size:??? mm (W) x??? mm (L) x??? mm (H) (?? ??x???? ??x???? ??
Power: 12 Vdc 500 mA? (AC/DC adapter included)
Safety:
Emissions:
Immunity:
Other Approval:?
Warranty: one year
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