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RFC 4458, "Session Initiation Protocol (SIP) URIs for Applications such as Voicemail and Interactive Voice Response (IVR)", April 2006

Note: This RFC has been updated by RFC 8119

Source of RFC: IETF - NON WORKING GROUP
Area Assignment: rai
See Also: RFC 4458 w/ inline errata

Errata ID: 1409
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Francois AUDET
Date Reported: 2008-04-16
Verifier Name: Robert Sparks
Date Verified: 2011-02-07

Section 5 says: 

     target-param      =  "target" EQUAL pvalue

     cause-param       =  "cause" EQUAL Status-Code

It should say:

     target-param      =  "target=" pvalue

     cause-param       =  "cause=" Status-Code

Notes:

The definition was too permissive and conflicted with RFC 3261 ABNF (p. 223). Since this parameter is part of the other-param of uri-parameter, only a "=" (i.e, no linear whitespace allowed) and not EQUAL (which allows linear whitespace).

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