Re: [Sip] Review of draft-ietf-speechsc-mrcpv2-15

Vijay,

A very thorough review. I have one comment on it, below.

	Thanks,
	Paul

Vijay K. Gurbani wrote:
> Hi:
> 
> The following is a review of draft-ietf-speechsc-mrcpv2-15 with
> emphasis on S1-S5, S12 and S14.  There are a few general comments
> first; the rest of the comments follow in linear fashion with respect
> to the sections enumerated above.

[snip]

>  4. In SIP, when a server responds with an affirmative response,
>   it always adds a tag parameter to the From header. 

Don't you mean To: header?

The initial INVITE should have a From-tag and the response should 
contain that and a To-tag. All subsequent requests and responses in the 
dialog should have both.

>   In the call
>   flow on page 16, the From header of the 200 OK does not contain
>   a tag parameter, it must.  Interestingly enough, the subsequent
>   ACK request contains the tag in the From parameter (as indeed it
>   should.)  Please add a tag parameter to the From header in the
>   200 OK, and ensure that it matches the one in the ACK request.
>   The tags are maintained for the duration of the lifetime of that
>   dialog.
> 
>   Thus, in the re-INV that starts at the bottom of page 16, the
>   From tag must be maintained.

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