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SIP WG IETF-72
Chairs: Keith Drage & Dean Willis
July 29, 2008 Afternoon Session II
Minutes by Alan Johnston
Agenda Bash - chairs
No changes.
SIP Steps to Draft Standard - Robert Sparks
Deciding to progress or cycle to proposed again?
- What might go? S/MIME, stateless proxies, perhaps a few headers
Focus on just 3261 and dependencies or add on SIP events, REFER, 100rel, etc.
Dependencies - TLS, SDP, and others
Implementation Report required
Discussion at the mike about what to do (or not do)...
Discussion about how to deal with TLS issue
What is the benefit of moving to Draft?
Discussion about benefits of removing things not used (e.g. S/MIME)
Robert called for a a show of hands with three options (move to draft, revise and recycle as proposed,
or do nothing)
Most in favor of revise and recycle as proposed
Robert called for a show of hands on whether an implementation interop report
is useful - most agreed.
Robert got volunteers for working on the list on conference call.
Chairs determined that we have decided not to try to move SIP to Draft.
Delivery of Request URI and Parameters to UAs through Proxies - Jonathan Rosenberg
Requirements discussed
Solutions reviewed
Status of debate
Proposal - use History-Info with new 'target' parameter
Discussion about the proposal
Everyone seems OK with the proposal
Jonathan will remove the mention of deleting other H-I fields in the proposal to
avoid security issues raised by Cullen.
Jonathan will write up the proposal in a draft.
INFO Issues - Eric Burger
Many drafts written
Is there a problem (other than DTMF) ?
Discussion
Problem is lack of negotiation, requires static configuration
Some say it is not problem, others say it is
Most agree we need to do something
Is INFO UUI mechanism needed?
Discussion says yes.
Extend INFO or new method name?
Discussion says we don't need a new name.
Discussion about mechanisms to fix INFO
Chairs:
WG does not have a milestone for fixing INFO
Show of hands to work with ADs to get a milestone
Unanimous consensus to get a milestone.
Chairs will work with ADs to get a milestone
Chairs called for show of hands to adopt draft-kaplan-sip-info-events for this milestone
No opposition
Chairs: Called for a show of hands on interest in documenting guidelines on signaling vs media path usage
Yes, with some opposition
Gonzalo encourages this discussion in SIPPING
SIP Identity Issues - John Elwell
Use case of media steering breaking 4474 signature
Jon points out that this is by design
Cullen asked if this is the only case
Additional case of wanting the same identity of a caller through multiple service providers
Discussion of why 4474 signs the fields it does
Discussion of what to do next