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# Catphone A VoIP softphone operated by a cat. ## Roadmap - [ ] SIP - [x] REGISTER - [x] MD5 - [ ] SHA-2 - [ ] INVITE - [ ] SDP - [ ] RTP/RTCP - [ ] Codecs - [ ] G.711 - [ ] PCMU (µ-law) - [ ] PCMA (a-law) ## References - rfc3261 - SIP: Session Initiation Protocol - rfc8760 - The Session Initiation Protocol (SIP) Digest Access Authentication Scheme - rfc5626 - Managing Client-Initiated Connections in the Session Initiation Protocol (SIP) - rfc8866 - SDP: Session Description Protocol - rfc3264 - An Offer/Answer Model with the Session Description Protocol (SDP)