Download SIP Witch 0.7.0

GNU SIP Witch is a pure SIP-based office telephone call server that supports generic phone system features like call forwarding, hunt groups and call distribution, call coverage and ring groups, holding, and call transfer, as well as offering SIP specific capabilities such as presence and messaging. It supports secure telephone extensions for making calls over the Internet, and intercept/decrypt-free peer-to-peer audio and video extensions. It is not a SIP proxy, a multi-protocol telephone server, or an IP-PBX, and does not try to emulate Asterisk, FreeSWITCH, or Yate.

Update:
Basic RTP media proxy, preliminary NAT support, and integrated SDP rewrite functionality have been introduced. This will enable stand-alone sipwitch hosts to call each other even when locations are both behind NATs or different subnets. Furthermore, since sipwitch handles NAT functionality in one place and transparently, desktop VoIP clients need not be configured for or aware of NAT functionality. Other changes include consolidation of realm and functional SIP domain.