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        RFC 3262

        Title:      Reliability of Provisional Responses in Session
                    Initiation Protocol (SIP)
        Author(s):  jdrosen@dynamicsoft.com,
                    schulzrinne@cs.columbia.edu
        Status:     Standards Track
        Date:       June 2002
        Mailbox:    jdrosen@dynamicsoft.com,
                    schulzrinne@cs.columbia.edu
        Pages:      14
        Characters: 29643
        Obsoletes:  2543

        I-D Tag:    draft-ietf-sip-100rel-06.txt

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc3262.txt


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.

This document is a product of the Session Initiation Protocol Working
Group of the IETF.

This is now a Proposed Standard Protocol.

This document specifies an Internet standards track protocol for
the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the
"Internet Official Protocol Standards" (STD 1) for the
standardization state and status of this protocol.  Distribution
of this memo is unlimited.

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