review of audio media types for G.719

Magnus Westerlund magnus.westerlund at
Wed Oct 1 20:04:13 CEST 2008

Thanks for the review Mark.

Mark Baker skrev:
> The interoperability considerations section is empty.  Is that intentional?

Yes, there isn't much to discuss in this regards as this is a media type 
for a RTP payload format. You need some external signalling mechanism 
that either declare or negotiate the features to use. The only 
interoperability issue here is the support and usage of interleaving. 
Which is covered in the draft. So what could be done is to add a 
reference to the relative sections in the RTP payload format.

> The additional information section is also empty.  You don't need a
> file extension?

No, there are ongoing work to define file storage of the G.719 codec. 
However, that is as part of the ISO based media file format. Thus this 
media type is not going to be used as a file type at all. And if it is 
this media type will need an update.


Magnus Westerlund

IETF Transport Area Director & TSVWG Chair
Multimedia Technologies, Ericsson Research EAB/TVM
Ericsson AB                | Phone +46 8 4048287
Färögatan 6                | Fax   +46 8 7575550
S-164 80 Stockholm, Sweden | mailto: magnus.westerlund at

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