The 2-Port FXS/FXO SIP Gateway provides toll-free voice and fax communications over the Internet or Intranet. The MultiVOIP FX gateway connects directly to phones, fax machines, key systems, PSTN lines, or a PBX to provide real-time, toll-quality voice connections to any office on your VOIP network. The MultiVOIP FX gateway is designed to maximize the investments you've already made in your data and voice network infrastructure.

Features:

• Ethernet connectivity and full IP compatibility w/ existing routers and WAN infrastructure
• Supports FXS/FXO on each channel for direct analog connection to phones, key telephones, fax machines, PBX extensions, PSTN lines or PBX trunks
• Supports SIP for sending voice over the Internet
• Voice compression
• VAD and CNG support
• QoS via DiffServ or 802.1p
• PSTN failover automatically routes calls over the PSTN network if the IP network is down
• Supports SIP supplementary services including call forward, call transfer, and call hold
• Toll bypass voice/fax communications
• Configuration and management using a web browser or Windows