• Audio-based Communication Services
• Video-based Communication Services

Obligation: MANDATORY, Lifecycle: CURRENT

The following standards are used for regular Session Initiation Protocol (SIP) support..

• Session Initiation Protocol (SIP) (RFC 3261:2002)
• Reliability of Provisional Responses in the Session Initiation Protocol (SIP) (RFC 3262:2002)
• An Offer/Answer Model with the Session Description Protocol (SDP) (RFC 3264:2002)
• The Session Initiation Protocol (SIP) UPDATE Method (RFC 3311:2002)
• Session Timers in the Session Initiation Protocol (SIP) (RFC 4028:2005)
• SDP: Session Description Protocol (RFC 4566:2006)
• SIP-Specific Event Notification (RFC 6665:2012)

Obligation: MANDATORY, Lifecycle: CURRENT

The following standards define the Session Initiation Protocol (SIP) and Real-time Transport Protocol (RTP) support for conferencing.

• A Framework for Conferencing with the Session Initiation Protocol (SIP) (RFC 4353:2006)
• Session Initiation Protocol (SIP) Call Control - Conferencing for User Agents (RFC 4579:2006)
• Conference Establishment Using Request-Contained Lists in the Session Initiation Protocol (SIP) (RFC 5366:2008)
• RTP Topologies (RFC 7667:2015)

This profile is used by the following profiles:

• Unified Audio and Video Profile - (profile)