Product name: Voip GSM gateway. 323 V4 and IETF SIP V2.The GoIP-8 is 8 Channels GSM Gateway bridges the GSM and the IP networks by enabling voice communications. It is an ideal for VoIP to Local termination where a fixed telephone line (PSTN) is not available or for cellphone roaming via a VoIP network. It enable you can save distance charges significantly. GOIP-8 support Open Standard VoIP Protocols ITU H. Single or Multiple Server Registrations. It has 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. It support VLAN and QoS. 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. LEDs for Power, Ready, Status, WAN, PC, GSM. Support Call forward from GSM to VoIP and VoIP to GSM. Dial in mode or dial out mode only. Password protection for both GSM dial in or dial out. Retransmit GSM Caller ID to VoIP terminal. Automatic traversal of NAT and firewall. Auto provisioning (requires auto provisioning server). Multi-language support: English and Chinese. RFC 2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals. RFC 2976 SIP INFO Method. RFC 3264 Offer/Answer model with SDP.
RFC 3515 SIP REFER Method. 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.
DTMF: RFC 2833, In-band DTMF, SIP INFO. 1.3 kg (Including AC/DC Adapter). We do our best to serve our each customer. -Items damaged or missing components is not refundable.
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