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Re: [MMUSIC] T140: Usage of "-"fmt value in dcsa encapsulated fmtp attribute

Flemming Andreasen <fandreas@cisco.com> Wed, 18 December 2019 03:23 UTC

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To: Paul Kyzivat <pkyzivat@alum.mit.edu>, mmusic@ietf.org
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From: Flemming Andreasen <fandreas@cisco.com>
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Date: Tue, 17 Dec 2019 22:23:00 -0500
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Subject: Re: [MMUSIC] T140: Usage of "-"fmt value in dcsa encapsulated fmtp attribute
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On 12/16/19 10:57 AM, Paul Kyzivat wrote:
> On 12/16/19 10:34 AM, Flemming Andreasen wrote:
>
>>> Also, I think we should aim at being aligned with the RTP usage when 
>>> it comes to SDP attributes.
>> Agreed again. I think the "fmtp" attribute is the right one to use 
>> here - the question is simply what format value we use. I'm leaning 
>> towards "t140", but we should get some general text in sdpneg to 
>> account for additional media formats in the future.
>
> IIUC you are proposing that the format value in fmtp attributes for 
> data subchannels should be the subchannel identifier. Is that right?
That's right.

-- Flemming
>
> While that is redundant I won't oppose that.
>
>     Thanks,
>     Paul
>
>
>
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