Editor's Note: Minutes received 12/16/92 CURRENT_MEETING_REPORT_ Reported by Jack Drescher/MCNC and Ari Ollikainen/LLNL Minutes of the Remote Conferencing BOF (REMCONF) The goals for the November 16th Meeting were: o Get a status report and perspective from Russ Hobby on proposals for how REMCONF might be more formally organized within the IETF. o Review and get consensus on the Draft Multimedia Communication Architecture Paper by Yee-Hsiang Chang. This paper has been on rem-conf for sometime now and some good feedback has been received from a small set of people. A summary report of this feedback will be presented. Hopefully, this will stimulate additional feedback and suggestions on how to resolve some of the issues. o Start the process of putting together a Catalog of Internet conferencing packages. MCNC has agreed to compile and periodically update the catalog. We'd like to agree on format, access and other logistics. We'd also like to identify initial candidates for the catalog. This can be a departure point for the interoperability discussions set for the Wednesday, November 18th AVT Working Group session. o Address other issues as time permits. o Provide a few information item handouts. Results I. An MCNC organizational recommendation summary was presented and discussed. (see attached). Some Key Discussion Points were: 1. Russ Hobby reported that approval has been granted to include Architectural type work in the scope of IETF activities. 2. There is an urgency to bring Resource Management out of Research and in to the IETF now. Future conversations with MIT Computer Science Lab indicate that introduction via BOF could occur at the next IETF in March, 1993. Personal Opinion: Perhaps this could be started in REMCONF. 3. An observation was made that Coding may not require a separate Working Group. 1 II. Yee-Hsiang Chang presented an outline of his paper (pre-supplied) on ``An Architectural Approach for Real-Time Multimedia Communications''. We didn't reach closure on consensus, but several points made were: 1. The layering concept is a good notion, but rigid definitions should be avoided. 2. The conferencing application may be unique in how session level functions invoke multiple services. 3. Ways in which the architecture could be expanded were discussed. These ranged from taking ``sub-application slices'' and driving them through to see that the functions were there to support them, to picking a few services and ``connecting user/provider''. It was noted that some services may not need manager relationships. At this point, Eve Schooler volunteered to start a spin-off BOF called Conferencing Control (CONFCTRL). Summary Minutes of that activity can be found in the Applications Area Report. III. A starter list of conferencing packages was constructed and Tom Sandoski's expanded list and other information about a catalog of offerings is attached. One purpose for doing this was to identify coding implementations that could be further analyzed for possible interoperability purposes. Henning Schulzrinne agreed to gather additional detailed information and a status report from him is included here: A first cut at an encodings summary will be part of the suite of Internet-Drafts (future RFCs) to come out within the next few days. Oliver Jones and others volunteered to contribute information on Video Codecs. Discussion will take place through the normal rem-conf channels. After discussions with Steve Casner, we decided that this activity was(roughly) within the AVT Charter and there was no need to create more structure at this point IV. Programs for the December Packet Video Workshop at MCNC were handed out along with the attached starter list of chipset and codec manufacturers, which will become part of the ``Offerings Catalog'' mentioned earlier in these Minutes. It was mentioned that we needed to add card/board level product companies to this list. That will be done. 2 Attendees Lou Berger lberger@bbn.com Dean Blackketter deanb@apple.com Scott Brim Scott_Brim@cornell.edu Stephen Casner casner@isi.edu Kay Chang chang@chang.austin.ibm.com Wo Chang wchang@nist.gov Richard Cogger rhx@cornell.cit.bitnet Kurt Dobbins dobbins@ctron.com Jack Drescher drescher@concert.net Tom Easterday tom@cic.net Hans Eriksson hans@sics.se William Fink bill@wizard.gsfc.nasa.gov Jerry Friesen jafries@sandia.llnl.gov Robert Gilligan Bob.Gilligan@eng.sun.com Russ Hobby rdhobby@ucdavis.edu Don Hoffman don.hoffman@eng.sun.com Christian Huitema christian.huitema@sophia.inria.fr Oliver Jones oj@pictel.com Jim Knowles jknowles@binky.arc.nasa.gov Christopher Kolb kolb@psi.com Paul Lambert paul_lambert@email.mot.com Allison Mankin mankin@gateway.mitre.org Matt Mathis mathis@a.psc.edu Greg Minshall minshall@wc.novell.com Michael Newell mnewell@nsipo.nasa.gov Ari Ollikainen ari@es.net Jim Perchik perchik@athena.mit.edu Mike Petry petry@ni.umd.edu Allan Rubens acr@merit.edu Tom Sandoski tom@concert.net Eve Schooler schooler@isi.edu Henning Schulzrinne hgs@research.att.com Scott Stein scotts@apple.com Terrance Sullivan terrys@newbridge.com Claudio Topolcic topolcic@cnri.reston.va.us Thierry Turletti turletti@sophia.inria.fr Janet Vratny janet@apple.com Abel Weinrib abel@bellcore.com Jeff Young young@alw.nih.gov Paul Zawada Zawada@ncsa.uiuc.edu 3 ^L ATTACHMENTS: An MCNC REMCONF Architecture Structure And Associated Working Group Recommendation October 7, 1992 TO: Phill Gross Russ Hobby Reference Documents: 1) Chart:Remote Conferencing Multimedia Architecture Yee-Hsiang Chang Proposed Structure 2) Draft Paper:Realtime Multimedia Conferencing Yee-Hsiang Chang Architecture 3) Draft Paper: Coding/Compression Requirements from Yee-Hsiang Chang the Network Protocol's Viewpoint 4) Statement of Desired Function (Developed at the Cambridge IETF) Summary Recommendation: In order to bring the Remote Conferencing Application to the Internet, we are recommending the formation of 2 new working groups and 2 new MCNC Packet Video Consortium Task Groups in addition to the existing Audio/Video Transport Working Group. A new Architectural Steering Committee is recommended to oversee and coordinate all of the Working and Task Groups in volved in the Remote Conferencing endeavor. The new entities are: 1) Resource Management (Future IETF Working Group) 2) Coding (MCNC Packet Video Consortium Task Group) 3) Connection/Configuration (IETF Working Group) 4) Application (MCNC Packet Video Consortium Task Group) The overall architecture development and "see that the pieces are all glued together" functions can be performed by an IETF Architectural Steering Committee that reports to an IETF Area Director. This Committee will oversee both the IETF Working Groups and Packet Video Consortium Task Groups. All Working Group and Task Group Leaders would be on the Steering Committee. Note: This assumes that extensions to IP Multicast can be handled in an existing Working Group such as Multicast Extensions to OSPF. Note: There is a decision to be made as to how much Resource Management should be added to the current level of IP and how much should be designed in to a future level of IP. ^L AUDIO/VIDEO CHIPSET MAKERS AT&T Microelectronics Arnold Englander - Mgr. Microelectronic Development 908/771-4578 Phone Ted Fagenson AT&T Product Marketing 908/771-3040 Phone 9O8/771-2873 Fax. Cecil Martin - Local Agent(Prime Components, Inc)Raleigh, N.C. 919/850-9866 Phone Product: AVP series chips C-Cube Microsystems Clint Chao - Sales Engineer(Western U.S.) 408/944-6300 Phone 408/944-6314 Fax Peter Zabollos-Sales Engineer(Eastern U.S.) 617/536-8480 Phone 617/536-8486 Fax Product: JPEG & other chips Used in most PC/MAC/Unix boards available today for JPEG (de)compression Integrated Information Technology Tim Williams - Product Mgr 408/727-1885 Phone 408/980-0432 Fax Mike Noonen - Product Marketing 617/270-0678 Phone 617/238-6706 Fax Intel Corporation Charlie Tai, Architecture Development Lab 503/696-2803 Phone 503/693-9348 Fax ctai@ashland.intel.com Email Motorola Obie Hasty - Product Manager 512/322-2300 Phone 512/322-2312 Fax Product: MM Communications Chipset Joint development with British Telecom for conferencing products SGS-Thomson D. Hockaday - Local Acct. Rep Raleigh, N.C. 919-787-6555 Product: MPEG/H.216 chips Texas Instruments Walt Bonneau - 340i Program Manager 713-274-2951 Product: 340i ^L CODEC VENDORS Bolter Communications Glenn Norem -President & CEO Stuart McLeod 214/484-6456 Phone 214/484-1919 Fax Product: Vision 7 (Formerly Concept Image 30) Compression Labs, Inc John E. Tyson -President & CEO 408/435-3000 Phone 408/922-5429 Fax Tom Lookabaugh -Director of Research 408/922-5587 Phone 408/922-4608 Fax toml@cygnusx1.portal.com Email Steve Parrish -Sales, Atlanta 404/980-6671 Phone 404/980-6683 Fax Product: Rembrandt, Rembrandt II PictureTel Rich Baker -Director of Research 508/977-8289 Phone 508/977-9491 Fax bake@pictel.com Email Bob Reynolds -Technical Staff reynolds@pictel.com Email VideoTelecom Joe Duran -Technical Sales 512/834-3703 Phone 512/834-3792 Fax ^L Owner of this document: John E.(Jack) Drescher INTERNET drescher@concert.net Manager, Program Development Phone 919/248-1412 MCNC Center for Communications Home 919/848-6876 PO Box 12889 3021 Cornwallis Road Fax 919/248-1405 Research Triangle Park, NC 27709-2889 To obtain the 7 Architecture Charts by Yee-Hsiang Chang: Please use anonymous ftp to the server at "ftp.concert.net". Get the file /doc/mm.ietf.ps. This is a long and big Postscipt file, in which case please use the -s option in lpr to print the file. To obtain the 5 "Catalog" Charts by Tom Sandoski: The Postscript file containing the slides about the packet-video packages and catalog is available via anonymous ftp from ftp.concert.net in "pub/pv-packages.slides.ps".