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Specifications: 8-Channel VOIP SIP Gateway (FXS/FXO)
Features: 8 ports for communication over an existing IP network or the Internet
Ethernet connectivity and full IP compatibility with 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 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
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
T.38 real-time fax relay for interoperability among other VOIP equip...