Q1: yes, with some minor edits to the draft to include the proxy-proxy type 
thing, it's clearly valuable work.

Q2: yes, I think those are the set of requirements - though I don't know why we 
can' expand them in the future if we decide a couple more are required.

-hadriel


> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of
> DRAGE, Keith (Keith)
> Sent: Wednesday, June 25, 2008 5:37 AM
> To: [email protected]
> Cc: Christer Holmberg
> Subject: Re: [Sip] Progress draft-holmberg-sip-keep
>
> (As SIP WG cochair)
>
> While I am seeing some traffic on the list, I am not yet seeing enough
> clear answers to the two questions asked to progress this to the AD as a
> charter request.
>
> Can I ask people who have already participated in the discussion to
> repost in regard to the questions asked.
>
> Can I ask more people in the group to review and and post their opinions
> on the two questions.
>
> Additionally, one issue that has been raised is proxy to proxy usage. If
> this draft progresses, is that an additional complexity that should be
> in or out?
>
> Regards
>
> Keith
>
> > -----Original Message-----
> > From: DRAGE, Keith (Keith)
> > Sent: Wednesday, June 18, 2008 11:28 PM
> > To: [email protected]
> > Cc: 'Christer Holmberg'
> > Subject: Progress draft-holmberg-sip-keep
> >
> > (As SIP WG cochair)
> >
> > We have been asked by the author of
> >
> > http://www.ietf.org/internet-drafts/draft-holmberg-sip-keep-01.txt
> >
> > Whether the SIP WG can progress this document.
> >
> > Because this draft arose as a result of the discussion of
> > outbound, and indeed seems to reuse the requirements from
> > outbound, and these requirements never really got handled in
> > the SIPPING WG, it has been agreed with the SIPPING chairs
> > that we will handle this entirely within SIP.
> >
> > Now in order to ask for charter milestones, and indeed when
> > we finally present this to IESG, we will be asked for the
> > level of support in the WG, which is also predicated on does
> > this fix a real problem, or is it just a corner case with
> > limited application. So:
> >
> > QUESTION 1 TO SIP WG: Are the use cases sufficiently
> > important to proceed with this draft? The document states:
> >
> >    Chapter 3.5 of draft-ietf-sip-outbound-13 [I-D.ietf-sip-outbound]
> >    defines two keep-alive techniques.  Even though the keep-alive
> >    techniques are separated from the Outbound mechanism
> >    [I-D.ietf-sip-outbound], it is currently not possible to indicate
> >    support of the keep-alive techniques without also
> > indicating support
> >    for the Outbound mechanism.
> >
> >    The Outbound mechanism is enabled during the UA registration phase.
> >    However, there are use-cases where the UA does not register itself,
> >    but still needs to be able to make calls and maintain NAT bindings
> >    open during the duration of that call.  A typical example is
> >    emergency calls.  There are also cases where entities do
> > not support
> >    the Outbound mechanism, but still want to be able to
> > indicate support
> >    and use the keep-alive techniques defined in
> > [I-D.ietf-sip-outbound].
> >
> > At first sight this is not the most inspiring declaration of
> > the need for the document. Please respond indicating whether
> > you consider this a useful draft, and propose text that you
> > think would be useful in this section. Conversely, if you
> > think this draft is not useful and the WG has other more
> > important things to work on first, please also respond.
> >
> > QUESTION 2 TO SIP WG: Do we have a robust set of requirements
> > for proceeding with this work? The document currently lists:
> >
> >    REQ 1: It MUST be possible for a UA to indicate support of
> > the keep-
> >    alive techniques defined [I-D.ietf-sip-outbound] if the UA supports
> >    only the keep-alive part of [I-D.ietf-sip-outbound].
> >
> >    REQ 2: It MUST be possible for an edge proxy to indicate support of
> >    the keep-alive techniques defined [I-D.ietf-sip-outbound]
> > if the edge
> >    poxy supports only the keep-alive part of [I-D.ietf-sip-outbound].
> >
> > It would be desirable to agree these at the outset, and not
> > revisit them if we continue with the work. So if you require
> > clarification, modification, or addition to these two
> > requirements, then please also response with your questions
> > and proposals.
> >
> > I suggest we would like responses by 30th June 2008 in order
> > to allow the author to revise the document before the
> > deadlines. Please note that we are looking to make this
> > decision on the list within this deadline based on responses
> > received, not leave it until the Dublin meeting.
> >
> > Regards
> >
> > Keith
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