Re: [MMUSIC] WGLC for draft-ietf-mmusic-data-channel-sdpneg

Christian Groves <Christian.Groves@nteczone.com> Mon, 07 March 2016 00:04 UTC

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To: Flemming Andreasen <fandreas@cisco.com>, Juergen Stoetzer-Bradler <juergen.stoetzer-bradler@nokia.com>, "mmusic@ietf.org" <mmusic@ietf.org>
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From: Christian Groves <Christian.Groves@nteczone.com>
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Date: Mon, 7 Mar 2016 11:04:34 +1100
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Subject: Re: [MMUSIC] WGLC for draft-ietf-mmusic-data-channel-sdpneg
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Hello Flemming and Juergen,

..snip..
>> I agree that in such cases such new attributes could indeed be added 
>> to corresponding data channel subprotocol specific attribute 
>> registries, which then could refer to the document introducing this 
>> new attribute.
> Right - and for consistency I think it then makes sense to have all 
> subprotocol-specific attributes registered there.
>
>> An alternative might be to only add such a new SDP attribute to the 
>> generic IANA SDP attribute registry (which probably would be done 
>> anyhow). I assume that the generic SDP attribute registry would also 
>> refer to the document introducing this new attribute.
>>
> Either would work, however my preference would be a complete listing 
> of attributes that have subprotocol specific meaning.
>
> I'd be interested in what other people think though

 From looking at the existing IANA registry 
http://www.iana.org/assignments/sdp-parameters/sdp-parameters.xhtml

It feels like we should take the approach for att-field (source level) 
and define att-field (data channel).

Regards, Christian

>
>
> Thanks
>
> -- Flemming (with my individual hat on)
>