Hello folks, Attached are the minutes from last week's call. Please let me know if you desire a number for this week. Thanks, George Kajos gkajos@videoserver.com VideoServer, Inc 63 Third Avenue Burlington, MA 01803 781-505-2193 (phone) 781-505-2101 (fax)

SQ16 Q14 Multimedia Management Information Base Audio Call 7/15/98 Minutes

Agenda 1. Review of H.323 MIBs and RTP MIB proposals 2. Review of H.320 MIB proposals 3. APC 1393 GW contribution 4. IETF BOF

Participants: Mike Thatcher, Cisco Zvi Mizrahy, Prina Vortman, IBM Haifa Orit Levin, RadVision Bill Strahm, Mark Baugher, Intel Nicole Gallant, Nortel Don Milotte, James Pansarasa, Picturetel Chris Grindel, PacNetX Jackson Wynn, White Pine George Kajos, Irina Suconick, Don Dewar, VideoServer

H.323 MIB Proposals In last weeks' meeting it was suggested that we review the existing body of work for any issues. Orit said she was working on a critique that wasn't ready in time for the meeting, but some of the big picture items were discussed in advance of Orit sending the paper to the mailing list.

RAS The first agenda item was RAS. The main focus of conversation was the admissionTable indices. This has been on the agenda as action item 3 for a couple of months. Orit's proposal is to use CallID, and the source and destination callSignalling addresses instead of the source and destination RASAdresses. There are a couple of major benefits of this proposed change. The first is that the CallID is unique across all connections. The major disadvantage is that the field is not defined for reverion 1 endpoints. The major benefit of using the Call addresses instead of the RAS addresses is that they are TCP addresses instead of UDP addresses and more likely to be unique because at revision 2 of the specification mulitple connections weren't being multiplexed over the TCP port. The previous objection to the CallSignalling addresses is that the specification at revision 2 has them marked as optional. Orit pointed out that they are not optional according to the revision 2 implementer's guide. The group will consider this change during the week, but most people were largely favorable to the change. The index for the registration table was also discussed at length. Orit proposed using the endpointIdentifier. However, at present it is defined to be 128 characters and would the OID would exceed the limits of SNMP. George volunteered to talk to Jim Toga and Dale Skran to see if might be acceptable to limit endpointIdentifier to 64 characters.

CallSignalling The next MIB to be reviewed was the H.225 CallSignalling MIB proposal. The main suggestion was to add the CallID to the Connection Table. This was also agreed upon after the Cannes meeting, but the version on the Picturetel site hasn't been updated yet.

H.245 Orit's general comments on the H.245 MIB were that it was not well organized and didn't follow the protocol specification. We postponed discussing this MIB under Orit can complete her critique and send it to the mailing list.

Gatekeeper The main suggestion is that the zone table should be updated to reflect the emerging GK-GK developments in the standard. This might be problematic because the GK-GK work is in version 3 of H.323 and the target for determination is version 2.

RTP Mark discussed that he had prepared a RTP session mapping table in support of mixers and MCUs and was considering reissuing the IETF draft. George remarked that as the original requester of the table, it might be more appropriate to create such a table in the MP and gateway MIBs rather than burden the RTP MIB with trying to support a generic mapping function.

Textual Conventions Mike Thatcher and Zvi Mizrahy agreed to work together to add more common definitions and conventions to the textual conventions to improve commonality and reuse.

H320 MIB Proposals There was no input on the H320 proposals during this call.

Gateway After a lengthy discussion during the 8th of July call regarding architecture, scope and charter, it was agreed that Zvi would send out an update of where he thought the present state of agreements were.

IETF We have officially requested a BOF for this work from the IETF Operations and Maintenance Area Directors Bert Wijnen and Harald Avelstrad.

Next Meeting: Wednesday, July 22, 1998 11:00 - 1:00 PM EST. Please send mail gkajos@videoserver.com for a bridge port number.

Current Action Items: 1. George Kajos - Publish meeting minutes (this report) and schedule next conference. 2. George Kajos - Confer with ISO and IETF network management experts regarding placement of H.Multimedia MIB. 3. Group - Admission table indices - See updated RasV2Mib.rtf for CallID change and text in report 4. Group - Admission and CallSignalling Tables index correlation. 5. VideoServer - Generate MC and MP proposal 6. George Kajos - Generate BOF request to O&M Area Director - Sent on 7/13/98 7. George Kajos/ Mark Baugher - Set up a mail reflector which can be used for IETF input and access - George does not think VideoServer will be able to do this and Mark Baugher said he would look into whether Intel can take this on. - Intel created HMIBS on 7/17/98 8. Contributors - place any updated the MIB proposals on the Picturetel reflector. The current status is: Avc-site\APC-1380 - overview Avc-site\APC-1387 - textual conventions Avc-site\APC-1388 - RTP Avc-site\APC-1389 - H.323 Call Signaling Avc-site\Incoming\RasV2Mib.rtf - H.323 RAS Avc-site\APC-1391 - H.323 Terminal Avc-site\APC-1392 - H.323 Gatekeeper Avc-site\Incoming\APC1393 - Gateway Avc-site\APC-1396 - H.320 Terminal Avc-site\APC-1397 - H.320 Call Signaling Avc-site\APC-1398 - H.221 Avc-site\APC-1399 - H.320 Multipoint Control Unit Avc-site\APC-1400 - H.245 The working proposal is that any updates will be placed in incoming by identifying name and Mr. Okubo and the mailing list will be informed. 9. Group - Gateway - we have to decide the architectural model for a gateway, what are the standard pieces, should multiway connections be modeled, etc.? 10. Group - Review all MIB proposals - ongoing 11. Orit Levin - send MIB critique to the mailing lists 12. Zvi Mizrahy - send update to the gateway proposal to the mailing list