[MMUSIC] [Technical Errata Reported] RFC3264 (2098)
RFC Errata System <rfc-editor@rfc-editor.org> Tue, 30 March 2010 09:47 UTC
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Date: Tue, 30 Mar 2010 02:48:11 -0700
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Subject: [MMUSIC] [Technical Errata Reported] RFC3264 (2098)
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The following errata report has been submitted for RFC3264, "An Offer/Answer Model with Session Description Protocol (SDP)". -------------------------------------- You may review the report below and at: http://www.rfc-editor.org/errata_search.php?rfc=3264&eid=2098 -------------------------------------- Type: Technical Reported by: Parveen Verma <ping2parveen@gmail.com> Section: 10 Original Text ------------- 10.1 Basic Exchange Assume that the caller, Alice, has included the following description in her offer. It includes a bidirectional audio stream and two bidirectional video streams, using H.261 (payload type 31) and MPEG (payload type 32). The offered SDP is: v=0 o=alice 2890844526 2890844526 IN IP4 host.anywhere.com s= c=IN IP4 host.anywhere.com t=0 0 m=audio 49170 RTP/AVP 0 a=rtpmap:0 PCMU/8000 m=video 51372 RTP/AVP 31 a=rtpmap:31 H261/90000 m=video 53000 RTP/AVP 32 a=rtpmap:32 MPV/90000 Corrected Text -------------- 10.1 Basic Exchange Assume that the caller, Alice, has included the following description in her offer. It includes a bidirectional audio stream and two bidirectional video streams, using H.261 (payload type 31) and MPEG (payload type 32). The offered SDP is: v=0 o=alice 2890844526 2890844526 IN IP4 host.anywhere.com s=- c=IN IP4 host.anywhere.com t=0 0 m=audio 49170 RTP/AVP 0 a=rtpmap:0 PCMU/8000 m=video 51372 RTP/AVP 31 a=rtpmap:31 H261/90000 m=video 53000 RTP/AVP 32 a=rtpmap:32 MPV/90000 Notes ----- The s= session name must have some values as per RFC 4566 Sec 5.3. ---------------------------------------------------------------- RFC 4566 5.3. Session Name ("s=") s=<session name> The "s=" field is the textual session name. There MUST be one and only one "s=" field per session description. The "s=" field MUST NOT be empty and SHOULD contain ISO 10646 characters (but see also the "a=charset" attribute). If a session has no meaningful name, the value "s= " SHOULD be used (i.e., a single space as the session name). ---------------------------------------------------------------- RFC 3264 also states in Section 5 "Unfortunately, SDP does not allow the "s=" line to be empty." Even if we put "s= " , it becomes a bit difficult to read/understand in soft/printed copy. The same error applies to all SDP examples given in Section 10 Instructions: ------------- This errata is currently posted as "Reported". If necessary, please use "Reply All" to discuss whether it should be verified or rejected. When a decision is reached, the verifying party (IESG) can log in to change the status and edit the report, if necessary. -------------------------------------- RFC3264 (draft-ietf-mmusic-sdp-offer-answer-02) -------------------------------------- Title : An Offer/Answer Model with Session Description Protocol (SDP) Publication Date : June 2002 Author(s) : J. Rosenberg, H. Schulzrinne Category : PROPOSED STANDARD Source : Multiparty Multimedia Session Control Area : Real-time Applications and Infrastructure Stream : IETF Verifying Party : IESG
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