Re: [AVTCORE] Working Group Last Call on draft-ietf-avtcore-leap-second-03
Colin Perkins <csp@csperkins.org> Mon, 26 August 2013 12:57 UTC
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From: Colin Perkins <csp@csperkins.org>
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Cc: IETF AVTCore WG <avt@ietf.org>
Subject: Re: [AVTCORE] Working Group Last Call on draft-ietf-avtcore-leap-second-03
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On 15 Aug 2013, at 08:46, Magnus Westerlund <magnus.westerlund@ericsson.com> wrote: > This starts the WG last call on RTP and Leap Seconds with the intended > status of Proposed Standard. Please provide any comments by 1st of > September. > > https://datatracker.ietf.org/doc/draft-ietf-avtcore-leap-second Section 5 says that: "No special treatment with respect to RTP timestamps is required in the presence of a negative leap second". This might be clearer written "No special treatment is needed to avoid ambiguity with respect to RTP timestamps in the presence of a negative leap second". I think some special treatment is needed, as noted in Section 5.2, to avoid jumps in the playout time. Section 5 also says NTP includes leap seconds, and that implementations working to a leap-second-bearing reference need "a working communications channel to receive notification of leap-second scheduling". Is having an NTP-synchronised clock a sufficient channel to receive the necessary notification, or is something more needed? Typos: - Section 3, 1st paragraph: "synchronized with with the rotation" - Section 6, 2nd paragraph: "leap-seocnd-bearing" Cheers, Colin -- Colin Perkins http://csperkins.org/
- [AVTCORE] Working Group Last Call on draft-ietf-a… Magnus Westerlund
- Re: [AVTCORE] Working Group Last Call on draft-ie… Colin Perkins
- Re: [AVTCORE] Working Group Last Call on draft-ie… Kevin Gross
- Re: [AVTCORE] Working Group Last Call on draft-ie… Colin Perkins