The Session Initiation Protocol (SIP) Refer Method (RFC 3515) (47788 bytes)
Dynamic Host Configuration Protocol (DHCPv6)Options for Session Initiation Protocol (SIP) Servers (RFC 3319) (14444 bytes)
An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing (RFC 3581) (29121 bytes)
Session Initiation Protocol Extension Header Field for Service Route Discovery During Registration (RFC 3608) (35628 bytes)
S/MIME AES Requirement for SIP (RFC 3853) (0 bytes)
Indicating User Agent Capabilities in the Session Initiation Protocol (SIP) (RFC 3840) (0 bytes)
Caller Preferences for the Session Initiation Protocol (SIP) (RFC 3841) (0 bytes)
The Session Inititation Protocol (SIP) 'Replaces' Header (RFC 3891) (0 bytes)
The SIP Referred-By Mechanism (RFC 3892) (0 bytes)
SIP Authenticated Identity Body (AIB) Format (RFC 3893) (0 bytes)
The Session Inititation Protocol (SIP) 'Join' Header (RFC 3911) (0 bytes)
An Event State Publication Extension to the Session Initiation Protocol (SIP) (RFC 3903) (0 bytes)
The Internet Assigned Number Authority (IANA) Header Field Parameter Registry for the Session Initiation Protocol (SIP) (RFC 3968) (0 bytes)
The Internet Assigned Number Authority (IANA) Universal Resource Identifier (URI) Parameter Registry for the Session Initiation Protocol (SIP) (RFC 3969) (0 bytes)