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The Sippy RTPproxy is a high-performance software proxy for RTP streams that can work together with SIP Express Router (SER), OpenSER or Sippy B2BUA. Originally created for handling NAT scenarious it can also act as a generic media relay as well as gateway RTP sessions between IPv4 and IPv6 ... [More]
Sippy B2BUA is a RFC3261-compliant SIP Back-to-back user agent (B2BUA). Unlike a SIP proxy server, which only maintains transaction state, the B2BUA maintains complete call state and participates in all call requests. For this reason it can perform number of functions that are not possible to ... [More]
A SIP registrar agent - it just registers on remote SIP servers and substitutes your desired SIP URI as contact for these remote registers. Thus all calls to remote SIP servers will be redirected to your desired SIP URI.