Re: [Slim] IETF last call for draft-ietf-slim-negotiating-human-language (Issue 8, section 6, IANA registrations)

[Paul Kyzivat <[e-mail]>]

On 2/15/17 11:26 AM, Randall Gellens wrote:

>>  I checked in current IANA registrations, and found that all SDP
>> attribute registrations now include the "Mux Category".
>>
>>  So, I assume that we are obliged to do so also and hope that we can
>> agree on that.
>>  As far as I understand the logic, we should specify NORMAL.
>
> This is not required.  See the IANA registry at
> http://www.iana.org/assignments/sdp-parameters/sdp-parameters.xhtml. It
> is governed by RFC 4566.
>
> As I've written twice before, my concern is that this suggestion exceeds
> a simple editorial change, and therefore may need to be discussed on the
> WG list with WG consensus before it can be adopted.  These fields can be
> added to the attribute registration later, according to the rules for
> the registry
> (http://www.iana.org/assignments/sdp-parameters/sdp-parameters.xhtml)

The mux-category is a big deal. There is a document in progress that 
defines the mux-category for all existing attributes. Attributes defined 
after that need to define their mux-category. There is potentially a 
problem with attributes defined while this work is in progress. That 
document for old attributes isn't going to chase after ones defined 
concurrently. I think you will find that if you don't define this then 
it will be caught and requested either by a sdp-directorate review, or 
else the iesg review. So just do it!

>>  I saw no trace yet of registrations of  "Usage Level: dcsa(subprotocol)"
>>
>>  I would like to get advice from someone with insight in the SDP
>> attribute registration and the status of the dsca(subprotocol) value
>> on how we should proceed in order to get the dsca(subprotocol)
>> included in a smooth way without causing exessive delay.

So far there has been *no* interest in defining RTP over SCTP. 
Until/unless that is defined there is no need to define dcsa for this 
attribute.

	Thanks,
	Paul