Yealink T27G

Appendix
587
 RFC 3262—Reliability of Provisional Responses in the Session Initiation Protocol (SIP)
 RFC 3263—Session Initiation Protocol (SIP): Locating SIP Servers
 RFC 3264—An Offer/Answer Model with the Session Description Protocol (SDP)
 RFC 3265—Session Initiation Protocol (SIP) - Specific Event Notification
 RFC 3266—Support for IPv6 in Session Description Protocol (SDP)
 RFC 3310—HTTP Digest Authentication Using Authentication and Key Agreement (AKA)
 RFC 3311—The Session Initiation Protocol (SIP) UPDATE Method
 RFC 3312—Integration of Resource Management and SIP
 RFC 3313—Private SIP Extensions for Media Authorization
 RFC 3323—A Privacy Mechanism for the Session Initiation Protocol (SIP)
 RFC 3324—Requirements for Network Asserted Identity
 RFC 3325—SIP Asserted Identity
 RFC 3326—The Reason Header Field for the Session Initiation Protocol (SIP)
 RFC 3361—DHCP-for-IPv4 Option for SIP Servers
 RFC 3372—SIP for Telephones (SIP-T): Context and Architectures
 RFC 3398—ISUP to SIP Mapping
 RFC 3420—Internet Media Type message/sipfrag
 RFC 3428—Session Initiation Protocol (SIP) Extension for Instant Messaging
 RFC 3455—Private Header (P-Header) Extensions to the SIP for the 3GPP
 RFC 3486—Compressing the Session Initiation Protocol (SIP)