Documents by P. Kyzivat
2004, RFC3841: Caller Preferences for the Session Initiation Protocol (SIP)
2006, RFC4596: Guidelines for Usage of the Session Initiation Protocol (SIP) Caller Preferences Extension
2009, RFC5628: Registration Event Package Extension for Session Initiation Protocol (SIP) Globally Routable User Agent URIs (GRUUs)
2014, RFC7405: Case-Sensitive String Support in ABNF
2016, RFC7865: Session Initiation Protocol (SIP) Recording Metadata
2017, RFC8068: Session Initiation Protocol (SIP) Recording Call Flows
2021, RFC8866: SDP: Session Description Protocol