The MultiVOIP FX SIP gateway provides toll-free voice and fax communications over the Internet or Intranet. Available in 2-, 4-, 8- and 24-port models, the MultiVOIP FX gateway connects directly to phones, fax machines, key systems, PSTN lines, or a PBX to provide realtime, 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:
• 2, 4, 8, or 24 ports for communication over an existing IP network or the Internet
• Ethernet connectivity and full IP compatibility with existing routers and WAN infrastructure
• FXS/FXO connectors on each channel for direct analog connection to phones, key telephones, PBX extensions, PSTN lines or PBX trunks (24-port FXS only)
• Supports SIP for sending voice over the Internet
• Voice compression to 5.3K per call with support for multiple algorithms, including ITU G.723 and G.729