# Catphone
A VoIP softphone operated by a cat.
## Roadmap
- [ ] SIP
- [x] REGISTER
- [x] MD5
- [ ] SHA-2
- [ ] INVITE
- [ ] SDP
- [ ] RTP/RTCP
- [ ] Codecs
- [ ] G.711
- [ ] PCMU (ยต-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)