[SIPForum-techwg] Section 13 of IP PBX spec

David R Oran oran at cisco.com
Tue Jan 10 07:31:29 EST 2006


On Jan 9, 2006, at 8:20 PM, Francois Audet wrote:

> Section 13 of the IP PBX draft recommends using CS5 for RTP
> media and CS4 for signalling messages.
>
> Those values are not the values that should be recommended by SIP  
> Forum.
>
> RTP media should be using Expedited Forwarding (EF), as per
> RFC 3246.
>
> Signaling should be CS5.
>
Francois is correct.

> Finally, and more importantly, these are recommended values.
> It is more important that this section describe that it shall
> be possible to configure (separately) the values for both
> Signalling and RTP media.
>
> Please read
> http://www.ietf.org/internet-drafts/draft-ietf-tsvwg-diffserv- 
> service-cl
> asses-01.txt. Figure 3 in particular
> is important.
>
> SIP Forum should not be making recommendations that
> contradict both IETF and common usage (which is what
> section 13 is doing right now).
>
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