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RFC 5888, "The Session Description Protocol (SDP) Grouping Framework", June 2010

Source of RFC: mmusic (rai)

Errata ID: 2313
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Alfred Hoenes
Date Reported: 2010-06-24
Verifier Name: Robert Sparks
Date Verified: 2010-06-24

Section 9.2.1 says:

9.2.1.  Example

   The example below shows how the callee refuses a media stream offered
   by the caller by setting its port number to zero.  The "mid" value
   corresponding to that media stream is removed from the "group" value
   in the answer.

   SDP description in the INVITE from caller to callee:

          [...]

|  SDP description in the INVITE from callee to caller:

          [...]

It should say:

9.2.1.  Example

   The example below shows how the callee refuses a media stream offered
   by the caller by setting its port number to zero.  The "mid" value
   corresponding to that media stream is removed from the "group" value
   in the answer.

   SDP description in the INVITE from caller to callee:

          [...]

|  SDP description in the "200 OK" from callee to caller:

          [...]

Notes:

Rationale: In the scenario described by the prose,
the SDP answer is carried in the non-provisional
response to the INVITE, in this case a "200 OK",
not in another INVITE. The latter (using a re-INVITE)
is a different scenario. (Note that a re-INVITE would
likely contain an SDP offer, where port 0 is not allowed.)

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