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Re: [MMUSIC] Offer/Answer PT Questions - text proposal

Roman Shpount <roman@telurix.com> Fri, 26 February 2016 17:47 UTC

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Date: Fri, 26 Feb 2016 12:46:56 -0500
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From: Roman Shpount <roman@telurix.com>
To: Colin Perkins <csp@csperkins.org>
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Cc: "mmusic@ietf.org" <mmusic@ietf.org>, Paul Kyzivat <pkyzivat@alum.mit.edu>
Subject: Re: [MMUSIC] Offer/Answer PT Questions - text proposal
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On Fri, Feb 26, 2016 at 12:42 PM, Colin Perkins <csp@csperkins.org> wrote:

>
> On 26 Feb 2016, at 17:40, Roman Shpount <roman@telurix.com> wrote:
>
> Why does PT needs to be unique in both directions (entire RTP session) vs
> unique in each direction? Having a unique PT in each direction is enough to
> unambiguously decode the packet. SSRC might change but the packet flow
> direction is well known when the packet is received.
>
>
> Because there might be more than one participant in the session.
>
> P.S. I am, of cause, talking about unicast sessions only.
>
>
> So am I. Unicast != only two participants.
>
>
I see -- having PT point to different codec profiles for send and receive
breaks RTP forwarders/mixers.

Thank You,
_____________
Roman Shpount

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