Re: [dispatch] New draft draft-mohali-dispatch-originating-cdiv-parameter-00.txt

On 3/23/16 2:45 AM, Christer Holmberg wrote:
> Hi,
>
> As far as I remember, in SIP all "repeatable" header fields shall also
> be "comma separabable".
>
> I can't think of a header field where that would not be the case.

The header fields with that property have syntax to match.

The syntax in 5502 doesn't support that for this header field. If that 
was then intent then the syntax should be revised.

	Thanks,
	Paul

> Regards,
>
> Christer
>
> Sent from my Windows Phone
> ------------------------------------------------------------------------
> From: Paul Kyzivat <mailto:pkyzivat@alum.mit.edu>
> Sent: ‎22/‎03/‎2016 20:31
> To: dispatch@ietf.org <mailto:dispatch@ietf.org>
> Subject: Re: [dispatch] New draft
> draft-mohali-dispatch-originating-cdiv-parameter-00.txt
>
> Marianne,
>
> Thank you. This draft is a huge improvement over the prior proposal for
> this purpose!
>
> I don't have a problem with this approach. The draft seems in reasonable
> shape. (I didn't read it for nits, as doing that seems premature.)
>
> One thing I noticed, which is really an issue with rfc5502:
>
> The P-Served-User header field doesn't seem to have the usual provision
> of headers like this for comma-separated repetition. And there is no
> mention pro or con regarding whether this header field can be repeated.
> Since it can already have both orig and term options, that presumably
> can coexist, I guess it can be repeated, but not using comma. Is that
> how it is being used in practice?
>
> It would be wise to clarify the ways in which this header field may be
> repeated. (E.g., every usage must have a distinct value of
> sessioncase-param.) And if multiple values separated by comma are being
> used in practice then the syntax ought to be corrected to allow that.
>
>          Thanks,
>          Paul
>
> On 3/21/16 3:24 PM, marianne.mohali@orange.com wrote:
>> Hello,
>>
>> Please find hereafter a new Internet-Draft  "P-Served-User Header Field Parameter for Originating CDIV session case in Session Initiation Protocol (SIP)".
>> The purpose of the draft is to register a new SIP parameter for the P-Served-User header field defined as per RFC5502.
>>
>> Abstract:
>>     This specification defines a new Session Initiation Protocol (SIP) P-
>>     Served-User header field parameter, "orig-cdiv-param", which defines
>>     the session case used by a proxy when handling an originating session
>>     after Call Diversion (CDIV) services has been invoked for the served
>>     user.  The P-Served-User header field is defined in [RFC5502].  The
>>     P-Served-User header field conveys the identity of the served user
>>     and the session case that applies to this particular communication
>>     session and application invocation.
>>     This document updates [RFC5502] in order to add the originating after
>>     CDIV session case.
>>
>> The draft can be found in :
>> URL:https://www.ietf.org/internet-drafts/draft-mohali-dispatch-originating-cdiv-parameter-00.txt
>> Status:https://datatracker.ietf.org/doc/draft-mohali-dispatch-originating-cdiv-parameter/
>> Htmlized:https://tools.ietf.org/html/draft-mohali-dispatch-originating-cdiv-parameter-00
>>
>> Best Regards,
>> Marianne Mohali
>>
>>
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