RFCs about voicemail
3 documents indexed under this keyword
- RFC 4239Internet Voice Messaging (IVM)CurrentNovember 2005proposed standard
- RFC 4244An Extension to the Session Initiation Protocol (SIP) for Request History InformationObsoletedNovember 2005proposed standardreplaced by RFC7044
- RFC 7044An Extension to the Session Initiation Protocol (SIP) for Request History InformationCurrentFebruary 2014proposed standard