Notes, SIP WG, Session 2

Reported by Dean Willis

1. Jonathan Rosenberg discussed Caller Preferences, Session Timer, and 3PCC drafts.

Caller Preferences -- poll on readiness for WG last call. Moderate commit level.

Session Timer -- poll on readiness for WG Last Call. High commit level.

3pCC: Much discussion with no conclusion. Many alternatives discussed. Poll --" is WG interested in doing this work" received loud positive response. Will discuss further on list.

2. Robert Sparks discussed draft-ietf-sip-cc-transger-02. Discussion on options for notification, with followup diverted to list. Polls indicated high level of interest and a target of having the draft ready for WGLC by the end of January 2000.

3. Alan Johnston reported on draft-agrawal-sip-h323-interworking-reqs-00.txt. This draft is now targeted for release as an informational draft around January 2001.

4. Bill Marshall reported on the various DCS drafts. In general, all drafts have been slightly clairified and updated to use current call control approaches. There is a general timing issue in that many of these drafts refer to 2543-bis features such as early media, provisional reliability, the 183 method. Jonathan Rosenberg suggested that these features need to be extracted from 2543-bis and moved into faster-track draft. There is also an issue (Donovan) with treatment of 183 under 2543 -- it is treated as conventional 100-class message by proxies.

Draft specific discussion:

arch: no discussion noted in this report.

manyfolks: Consensus to remove dependency on 2543-bis and take to standards-track. There MAY be 3PCC consderations which need to be addressed before advancement.

privacy: Draft has dependencies on manyfolks and 183(bis), can be decoupled from bis as suggested above. Draft includes a via hiding mechanism, which was removed from base spec. This appears to be functionally different as it is done by a single proxy on its initiative rather than by a proxy requested by the previous proxy in a chain. WG poll on readiness for last call indicated mixed results, with further discussion needed

state: No changes in 6 months. Strong consensus on draft readiness for WGLC. Low level of general interest. Dependency issues on serverfeatures and on UA implementation. There may be other mechanisms that also associate state.

call-auth: Initial discussion apathetic. JDR discussed apathy problem on list. Consensus on readiness for submission to IESG as individual effort on informational track with WG concurrence.

proxy-proxy: Consensus to send to IESG on informational track. Note: IANA registration needs to be committed under separate cover, standards track.

5. Alan Johnston discussed call-flows draft 4.  Consensus reached to put test messages in a separate draft. Suggestions made to remove "telephony" from draft name, include fax calls, exercise test messages against real systems, add text saying that 2543 takes precedence in case of conflict.

6. Alan Johnston discussed the service examples draft. Strong consensus on importance of work, and on NOT "definining standards services" in this forum. Discussion: more centrex-like and PBX-like call flows are needed.

7. Jon Peterson discussed sip-t draft (draft-vemuri-sip-t-context-01.txt). Strong consensus that this should replace the current sip-t umbrella draft. There are open issues on encryption.

8. Gonzalo Camarillo discussed ISUP-MIME. Currently in WGLC. Interest level high.

9. draft-ietf-sip-100rel-02.txt  -- IESG review ongoing. WG Level of interest High.

10.  draft-ietf-sip-srv-00.txt -- HGS is still working on revions, maybe issue early in 2001.

11. draft-ietf-sip-mib-01.txt -- update planned for January, to finalize IETF50.

12. draft-ietf-sip-guidelines-00.txt  -- minor changes since last. WGLC issued for Decmber 24, publish as BCP, interest level high.

13. 2543-bis update from Henning -- proposal to reorganize, possibly split into two drafts (spec and discussion) in Feb 2001 timeframe. Very high level of interest.

14. Arnoud van Wijk presented draft-gearhart-sip-deaf-req-00.txt. The WG displayed a strong consesnsus on further developing such requiremenst as a WG effort.

15. draft-hamer-sip-session-auth-00.txt  -- Several comments on need to converge the multiple media authentication mechanisms under consideration. Level of interest inconclusive.

16. Jonathan  Lennox discussed sip-CGI and registration-payload. CGI is "still trucking". Registration payload has high level of consensus on interest.

17. draft-gross-cops-sip-00.txt, draft-gross-sipaq-00.txt  -- comment, probably better in other WG due to competencies. Level of interest medium.

18. Roach on draft-roach-sip-subscribe-notify-02.txt -- Some changes, several open issues. Interest level high.

19. draft-rosenberg-sip-entfw-00.txt -- WG interest level high.

20. draft-rosenberg-sip-app-components-00.txt  - -WG interest high.

21. draft-rosenberg-sip-conferencing-models-00.txt  -- WG interest high.

22. Stephen Thomas discussed draft-johnston-sip-osp-token-01.txt . Several changes. There are multiple implementations that have been baked off. Suggest publication as standards-track individual effort. Moderate to high WG interest.

23. Bryan Byerly discussed draft-levy-sip-diversion-01.txt. Interest level medium, discussion deferred to list.

24. Bryan Byerly discussed draft-byerly-sip-radius-00.txt . This needs to be combined with other AAA work, and may require changes to core SIP. Level of interest low.

25. Bryan Byerly discussed draft-byerly-sip-hide-route-00.txt. More discussion probably needed on list. Level of interest expressed low.

26. Matt Holdredge discussed draft-calhoun-sip-aaa-reqs-01.txt. This has significant implications for 3GPP. Further work is needed in requirements gathering. Level of interest high.

27. Gonzalo Camarillo discussed draft-camarillo-sip-isup-bcp-00.txt. There seemed to be little controversy. The WG expressed a high level of interest.