Having now had time to read the draft in detail, what's needed is something
like:
The information carried in the media type specification has a
specific mapping to fields in the Session Description Protocol (SDP)
[5], which is commonly used to describe RTP sessions. When SDP is
used to specify sessions employing the Speex codec, the mapping is
as follows:
o The media type ("audio") goes in SDP "m=" as the media name.
o The media subtype ("speex") goes in SDP "a=rtpmap" as the encoding
name. The required parameter "rate" also goes in "a=rtpmap" as the
clock rate.
o The parameters "ptime" and "maxptime" go in the SDP "a=ptime" and
"a=maxptime" attributes, respectively.
o Any remaining parameters go in the SDP "a=fmtp" attribute by
copying them directly from the media type string as a semicolon
separated list of parameter=value pairs.
Some example SDP session descriptions utilizing Speex encodings
follow.
To replace much of the existing text in the first half of Section 5. The
rationale is that all parameters are defined as parameters of the media type,
and the SDP usage just describes how those media type parameters are encoded
into SDP.
--
Colin Perkins
http://csperkins.org/