File formats:

Status:

PROPOSED STANDARD

Obsoletes:

RFC 2543

Authors:

J. Rosenberg
H. Schulzrinne

Stream:

IETF

Source:

sip (rai)

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  10.17487/RFC3262

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Abstract

This document specifies an extension to the Session Initiation Protocol (SIP) providing reliable provisional response messages. This extension uses the option tag 100rel and defines the Provisional Response ACKnowledgement (PRACK) method. [STANDARDS-TRACK]

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.