TelephoneStuff.com MultiTech Systems 8-Port VOIP Gateway/SIP Server MVP810-SS

The MultiVOIP SS survivable SIP gateway and server is ideal for small branch offices of large corporations that have deployed a distributed IP telephony network. It functions as the primary or secondary SIP server for IP phones used at the remote offices and renders local office survivability, in the case of a LAN or WAN failure, by providing local, reliable PSTN trunking. The MultiVOIP SS gateway also provides local PSTN access for emergency calls, such as 911, as well as normal inbound/outbound local calling. In addition, the gateway functions as an analog telephone adapter (ATA), adapting analog phones and fax machines to IP environments. Features: - 2-, 4-, 8- analog ports for communication over an existing IP network or the Internet - Supports SIP for sending voice over the Internet - FXS/FXO/DID and E&M; connectors on each channel for direct analog connection to phones, key telephones, PBX extensions, PSTN lines or PBX trunks - Provides local office survivability in the event of a LAN/WAN failure - Emergency transfer (power-out fail-over) - PSTN trunking bridges the PSTN to the IP network for emergency calls as well as normal inbound/outbound calling - Multi-port ATA functionality for analog phones and fax machines - Ethernet connectivity and full IP compatibility with existing routers and WAN infrastructure - Voice compression to 5.3K bps per call with support for multiple algorithms, including ITU G.723 and G.729 - VAD and CNG support - QoS via DiffServ or 802.1p - T.38 real-time fax relay for interoperability among other VOIP equipment - Supports SIP supplementary services including call forward, call transfer, and call hold - Adaptive echo cancellation, forward error correction and dynamic jitter buffers - Configuration and management using a Web browser or Windows - Built-in modem for remote out-of-band management (4- and 8- port models)