[AVTCORE] [Technical Errata Reported] RFC4733 (3451)
RFC Errata System <rfc-editor@rfc-editor.org> Fri, 11 January 2013 13:35 UTC
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To: schulzrinne@cs.columbia.edu, taylor@nortel.com, gonzalo.camarillo@ericsson.com, rjsparks@nostrum.com, keith.drage@alcatel-lucent.com, even.roni@huawei.com
From: RFC Errata System <rfc-editor@rfc-editor.org>
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Date: Fri, 11 Jan 2013 05:24:51 -0800
Cc: xavier.marjou@orange.com, avt@ietf.org, rfc-editor@rfc-editor.org
Subject: [AVTCORE] [Technical Errata Reported] RFC4733 (3451)
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The following errata report has been submitted for RFC4733, "RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals". -------------------------------------- You may review the report below and at: http://www.rfc-editor.org/errata_search.php?rfc=4733&eid=3451 -------------------------------------- Type: Technical Reported by: Xavier Marjou <xavier.marjou@orange.com> Section: 2.1 Original Text ------------- Named telephone events are carried as part of the audio stream and MUST use the same sequence number and timestamp base as the regular audio channel to simplify the generation of audio waveforms at a gateway. Corrected Text -------------- Named telephone events are carried as part of the audio stream and MUST use the same SSRC (therefore the same timing and sequence number space) and the same timestamp clock rate as the regular audio channel to simplify the generation of audio waveforms at a gateway. Notes ----- RFC4733 was written in a way to avoid the multiple clock-rate problem by mandating the use of the same SSRC for DTMF and audio. However it's not explicitly written, which brings an ambiguity. It was commented that RFC4733 needs to be updated. (c.f. http://tools.ietf.org/wg/avtext/minutes?item=minutes-85-avtext.html) 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. -------------------------------------- RFC4733 (draft-ietf-avt-rfc2833bis-15) -------------------------------------- Title : RTP Payload for DTMF Digits, Telephony Tones, and Telephony Signals Publication Date : December 2006 Author(s) : H. Schulzrinne, T. Taylor Category : PROPOSED STANDARD Source : Audio/Video Transport Area : Real-time Applications and Infrastructure Stream : IETF Verifying Party : IESG
- [AVTCORE] [Technical Errata Reported] RFC4733 (34… RFC Errata System
- Re: [AVTCORE] [Technical Errata Reported] RFC4733… Tom Taylor
- Re: [AVTCORE] [Technical Errata Reported] RFC4733… Art Allison
- Re: [AVTCORE] [Technical Errata Reported] RFC4733… Magnus Westerlund
- Re: [AVTCORE] [Technical Errata Reported] RFC4733… Marc Petit-Huguenin
- Re: [AVTCORE] [Technical Errata Reported] RFC4733… Marc Petit-Huguenin
- Re: [AVTCORE] [Technical Errata Reported] RFC4733… Magnus Westerlund
- Re: [AVTCORE] [Technical Errata Reported] RFC4733… Art Allison
- Re: [AVTCORE] [Technical Errata Reported] RFC4733… Xavier Marjou