March 1998 - sg16-avd - lists.packetizer.com

Real Time Device Control
by Gary A. Thom 26 Mar '98

26 Mar '98

All, Please remember that Q14 is supposed to be working on the low level Real Time Device Control (RDC) protocol/procedure for H.245 based systems. I encourage all interested parties to give this serious consideration, and submit proposals to the Yokosuka meeting. This is particularly important for those who object to using T.120 for RDC. At the Geneva meeting, much of this work was moved back into Q3, because there was no objection during the Joint Q3/Q14 meeting. If we do not develop a proposal which takes into account the Q11-14 needs, they will move forward developing a T.120 based solution. To start the discussion: There are probably may approaches, some are: 1) Run H.281 FECC over a UDP logical channel. With H.224, without H.224, or with some other low level protocol to assure delivery. 2) Develope a more robust RDC protocol to run over a TCP/UDP logical channel. 3) Provide FECC like functions within H.245. (not a good idea). 4) Provide FECC like functions within T.120. (This was the approach before the RDC work was moved to Q14 last year.) This work should be coordinated for use in H.323, H.324, H.310 systems which all use H.245 and logical channels. Please begin discussion and preparation of proposals for the April meeting Also, Tom Geary, could you please send this to the Q11 reflector. Thanks Gary ------------------------------------------------------ Name : Gary A. Thom Company: Delta Information Systems, Inc. Address: 300 Welsh Rd., Bldg 3 Horsham, PA 19044 USA Phone : +1-215-657-5270 Fax : +1-215-657-5273 E-mail : gthom(a)delta-info.com ------------------------------------------------------

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Re: Errata solicited
by Derks, Frank 26 Mar '98

26 Mar '98

Hi Jim, where can I find an (updated) version of the H.323 Implementors guide? Frank > -----Original Message----- > From: Jim Toga [SMTP:jtoga@JF.INTEL.COM] > Sent: 25 March 1998 18:17 > To: ITU-SG16(a)MAILBAG.INTEL.COM > Subject: Errata solicited > > Greetings fellow Experts, > > > I would like to solicit input for the H.323 Implementors Guide and the > H.235 Implmentors Guide. I have received a number of comments/corrections > to text that I will be incorporating into the proposed documents. > > The goal would be to have as much relevant text to bring _into_ the > Yokuska > meeting as possible. Please send me any comments that you have or post > them to the reflector. > > Best Regards, > jimt. > > > *********************************************************** > *** +1-503-264-8816(voice) +1-503-264-3485(fax) > *** > *** jim.toga(a)intel.com Intel - Hillsboro, OR. > *** > *** PGP keyID 36 07 86 49 7D 74 DF 57 50 CB BA 32 08 9C 7C 41 > *** > ***********************************************************

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APC numbers
by Sakae OKUBO 25 Mar '98

25 Mar '98

Dear Messrs. Walker and Kimchi, Attached please find APC numbers which have been allocated to your contributions. --------------------------------------------------------------------- APC- Source Provisional Title --------------------------------------------------------------------- 1328 Siemens Proposal for Call Hold Supplementary service in H.323 (H.450.Hold) 1329 Siemens Proposal for Call Park/Call Pickup supplementary service in H.323 (H.450.Park+Pickup 1330 Siemens Proposal for Call Waiting Supplementary Service H.323 (H.450.CallWaiting) 1331 RADVision A proposal for RTP/RTCP addresses use during the Fast Connect Procedure 1332 RADVision Remarks on H.225.0 1333 Editor Drat Amendment 5 to H.222.0 1334 Editor Draft Annex I to H.225.0 1335 Editor Darft H.245 V4 1336 Editor Darft H.310 V2 1337 Editor Draft H.bmultipoint 1338 Editor Draft Annex D to H.323 1339 PictureTel Proposals and General Comments for H.323 Annex C 1340 Mitel Message Waiting Indication Supplementary Service in H.323 1341 multiple Inter-Gatekeeper Communication Requirements (H.323 Annex G) 1342 ETSI Communication from EP TIPHON to ITU SG16 on Codec support for H.323 --------------------------------------------------------------------- Sakae OKUBO

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Re: MPEG-4 Compatibility with ITU-T H.263
by Gary Sullivan 25 Mar '98

25 Mar '98

ITU and MPEG Particpants, Two days ago I sent a message noting the achievement of H.263 compatibility in MPEG-4 video. I want to clarify one aspect of that message. In my exuberance over the outcome of the Tokyo MPEG meeting, I may have glossed over describing the precise resulting technical relationship between the two standards. This was pointed out to me in a private email message. To clarify, the MPEG-4 video syntax was altered in Tokyo so that an MPEG-4 video decoder can decode H.263 Baseline bitstreams. However, since the MPEG-4 video syntax can also support additional features not supported in H.263 Baseline syntax, the opposite is not true in general -- not all MPEG-4 video streams can be decoded by H.263 Baseline decoders. (This is probably understood by those of us who have intimate knowledge of these standards, but may need to be clarified for others.) Best Wishes, Gary Sullivan ---------------------------------------------- From: Gary Sullivan <garys(a)pictel.com> Subject: MPEG-4 Compatibility with ITU-T H.263 In Re: Compatibility between MPEG-4 Video and ITU-T Rec. H.263: I wish to take note of what I believe to be an important milestone in video coding standardization. Last week, the MPEG-4 project achieved compatibility with ITU-T H.263. MPEG created a "final committee draft" of its draft MPEG-4 video coding standard last week (March 16-20) at its 43rd meeting in Tokyo. Full compatibility with the prior video coding standard ITU-T Recommendation H.263 was adopted into that draft. The compatibility was achieved by an alignment of complete syntax support for the primary "Baseline" interoperability operational mode of Rec. H.263. This is an important event in video coding standardization development, ensuring that the new implementations of the future MPEG-4 video standard (FCD for ISO/IEC 14496-2) can have full compatibility with the deployed implementations of Rec. H.263 worldwide. This action sends a clear message that H.263 technology remains at the heart of today's understanding of low bit-rate video compression coding, and that interoperability of these standardized systems is needed world-wide. ITU-T Recommendation H.263 is a video coding standard developed by the International Telecommunications Union (Telecommunications Standardization Sector, formerly CCITT). It was originally approved in November of 1995 and is maintained by the ITU-T Advanced Video Coding Experts Group, formally chartered as Question 15 of the ITU-T Study Group 16 for Multimedia Standardization. Newly approved in a second-generation specification completed in September of 1997 and approved in January of 1998, Rec. H.263 is the current "flagship" ITU standard for low bit rate video communication coding. The "Baseline" mode which forms the heart of H.263 operation was the fundamental requirement for all implementations of the original H.263 specification and is now also fully supported in both the second version of H.263 and in the new draft of MPEG-4 video. The H.263 Baseline mode provides an excellent interoperable common core for video coding systems. MPEG-4 video, to be formalized in ISO/IEC 14496-2, is a project of the Moving Picture Experts Group (MPEG) formally chartered as Working Group 11 of ISO/IEC JTC1 SC29. The MPEG-4 video coding standardization project is developing its specification to provide a broadly-applicable and flexible set of video coding tools and defined configuration profiles for a wide range of multimedia applications with new functionalities such as object-segmented coding and the handling of hybrids of natural and synthetic content. The first of two planned versions of MPEG-4 video is now in a "final committee draft" stage and is expected to receive final approval in December of 1998. I want to thank those who helped bring about this important convergence of standardization development. In particular I would like to thank the MPEG convenor Mr. Leonardo Chiariglione, the MPEG Video chairman Mr. Thomas Sikora, the MPEG Video Coding Efficiency chairman Mr. T. K. Tan, and the supporting MPEG National Bodies of Canada, France, Norway, and the Netherlands. I also wish to especially thank those individuals who recently actively contributed toward the final detailed technical evaluation, proposal, and drafting process for this effort, in particular especially Ms. Gunn Kristin Klungsoyr, Mr. Cor Quist, Mr. Aasmand Sandvand, Mr. Peter List, and Ms. Cecille Dufour. I also wish to thank those who contributed toward this goal previously at critical moments, in partular Mr. Robert Danielsen, Mr. Tom-Ivar Johansen, Mr. Richard Schaphorst, Prof. Faouzi Kossentini, and Mr. Jan De Lameillieure. Sincerely, Gary Sullivan ITU-T Advanced Video Coding Rapporteur PictureTel Corporation This is not an official statement of PictureTel or of ITU-T Q15/SG16.

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Errata solicited
by Jim Toga 25 Mar '98

25 Mar '98

Greetings fellow Experts, I would like to solicit input for the H.323 Implementors Guide and the H.235 Implmentors Guide. I have received a number of comments/corrections to text that I will be incorporating into the proposed documents. The goal would be to have as much relevant text to bring _into_ the Yokuska meeting as possible. Please send me any comments that you have or post them to the reflector. Best Regards, jimt. *********************************************************** *** +1-503-264-8816(voice) +1-503-264-3485(fax) *** *** jim.toga(a)intel.com Intel - Hillsboro, OR. *** *** PGP keyID 36 07 86 49 7D 74 DF 57 50 CB BA 32 08 9C 7C 41 *** ***********************************************************

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Registration status of Q.11-14 Yokosuka Rapporteur meeting
by Hidenobu Harasaki 24 Mar '98

24 Mar '98

Dear Q.11-14 Yokosuka Rapporteur meeting participants: The following is the registration status of March 24 10:30 JST. Please check your name, company name, mainly attending question and hotel reservation status. What question your are mainly going to attend will help us to allocate meeting rooms. If your hotel reservation field is blank, the hotel does not have any reservation record for you as of March 23. In case that your name is missing or spell is incorrect, please let me know. Looking forward to seeing all of you in Yokosuka, Hideh Hidenobu Harasaki harasaki(a)ccm.CL.nec.co.jp Principal Researcher C&C Media Research Labs., NEC Corporation Phone: +81 44 856 8083 Fax: +81 44 856 2232 Name Registered LAST, first Company name Questions on Hotel ANDO, Dai NTT Q.13 3/5 ARONSON, Barry Barry Aronson Consulting Q.11 3/21 Okay BAUGHER, Mark Intel Q.13,14 3/24 BELL, Bob Selsius Systems Q.11 3/21 processing BLIN, Jean-Pierre France Telecom Q.12 3/20 Okay BOZIER, Michele Madge Networks Q.13,14 3/20 processing CALLAGHAN, Robert Siemens Q.13,14 3/20 Okay CAMPOS-NETO, Simao COMSAT Q.11,12,13,14 3/20 Okay CARADEC, Jean-philippe HP Q.13 3/23 De MUIJNCK, Jeroen KPN Research Q.13,14 3/21 processing FREUNDLICH, Glen Lucent Q.13,14 3/20 Okay FU, Zuqiang (Frank) Nokia Mobile Phones Q.11 3/20 canceled GALVIN, Pat DataBeam Q.13,14 3/20 Okay GEARY, Tom Rockwell Q.11 3/6 Okay GURLE, David VOCALTEC Q.13,14 3/4 Okay HAIGNERE, Isabelle France Telecom Q.13,14 3/20 Okay HARASAKI, Hidenobu NEC Q.12 3/4 HEDAYAT, Kaynam PicturTel Q.13,14 3/16 Okay KAJOS, Geroge VideoServer Q.13,14 3/13 Okay KATTO, Jiro NEC Q.13,14 3/6 KILEGRAN, Annika Telia Research Q.13 3/20 Okay KIMCHI, Gur ETSI Q.13,14 3/6 Okay KOBAYASHI, Naoki NTT Q.11-14 3/9 KORPI, Markkv Siemens Q.13 3/12 Okay KOYANO, Hiroshi NTT Q.13 3/5 KUFFEL, Irene Cisco Q.14 3/20 KUMAR, Vineet Intel Q.13 3/12 Okay LEVIN, Drit Radvision Q.13 3/13 processing LIU, Hong Bellcore Q.13,14 3/19 Okay LINDBERGH, David PictureTel Q.11,13,14 3/13 Okay LUTHI, Patrick PictureTel Q.11,13,14 3/13 MAENG, Joon VTEL Q.13,14 3/16 processing MURAKI, Takahiro NTT Q.11-14 3/9 NAKAI, Toshihisa Oki Q.13 3/21 NASIRI, Mickey Ericsson Q.11 3/20 Okay OKUBO, Sakae GCL Q.12 3/18 OTT, Joerg TELES (Q.11),13,14 3/20 Okay QUIST, Cor KPN Research Q.11 3/24 REID, Mark VideoServer Q.13,14 3/16 Okay RISSANEN, Pekka Nokia Q.13,14 3/20 Okay ROY, Radhika R. AT&T Q.13 3/11 processing SAKAI, Kiyoshi Fujitsu Q.12 3/4 SAKAZAWA, Shigeyuki KDD Q.13,14 3/23 SEBESTYEN, Istvan Siemens Q.13,14 3/21 Okay SINGH, Hardish 8x8 Q.13 3/20 Okay SKRAN, Dale Ascend Q.13,14 3/21 SUCONICK, Irina VideoServer Q.13,14 3/13 Okay SVENNEVIK, Anders Ericsson Q.13,14 3/23 Okay TAYLOR, Tom Nortel Q.13 3/7 Okay THOM, Gary Delta Information Systems Q.14 3/10 Okay TOGA, Jim Intel Q.13.14 3/16 Okay TRUONG, Hong Linh IBM Q.12,13,14 3/17 Okay WALKER, Dave Mitel Q.13,14 3/20 Okay YAMAGUCHI, Hiroyuki NTT Q.11 3/20 YAN, Li Lucent Q.12 3/20 Okay YANG, Zhong Jin Okay end of the list

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IETF iptel working group
by Jonathan Rosenberg 23 Mar '98

23 Mar '98

Members of ITU SG16, As many of you are probably are aware, the IETF has created a new working group, called iptel (IP Telephony), to develop some protocols related to Internet telephony. There has been a lot of confusion about this group and what it is (and isn't) doing, so as chair of this group, I'd like to provide some clarification. Firstly, the group is not standardizing an alternative to H.323. The group will be standardizing two things, both of which are independent, orthogonal, and complementary to H.323. The first output of the group is a call processing syntax. This is a directive which can be uploaded by a client to a server, such as a gatekeeper or gateway. When a call arrives at this server, the directive is processed, and a decision about what do to with the call is made. This allows clients to express preferences about call handling based on inputs such as caller, time of day, subject, media, etc. The second output of the group is a protocol for distributing attributes to aid in the process of selecting a gateway to complete an IP to PSTN call. The protocol will focused on wide-area (aka inter-zone) distribution, where scalability is a serious concern. Likely it would be implemented by gateways and gatekeepers, adding greater reach to the existing intra-zone mechanism currently in RAS. This work is quite complementary to both H.323 and the efforts of ITU SG16. I would encourage those of you who are interested to attend the meeting for more details. In addition, you should join the group's mailing list. Instructions for doing so can be found at http://www.bell-labs.com/mailing-lists/iptel/. Thanks, Jonathan R. -- Jonathan D. Rosenberg Lucent Technologies Member of Technical Staff 101 Crawfords Corner Rd. High Speed Networks Research Holmdel, NJ 07733 FAX: (732) 834-5379 Rm. 4C-526 EMAIL: jdrosen(a)bell-labs.com URL: http://www.cs.columbia.edu/~jdrosen

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MPEG-4 Compatibility with ITU-T H.263
by Gary Sullivan 23 Mar '98

23 Mar '98

In Re: Compatibility between MPEG-4 Video and ITU-T Rec. H.263: I wish to take note of what I believe to be an important milestone in video coding standardization. Last week, the MPEG-4 project achieved compatibility with ITU-T H.263. MPEG created a "final committee draft" of its draft MPEG-4 video coding standard last week (March 16-20) at its 43rd meeting in Tokyo. Full compatibility with the prior video coding standard ITU-T Recommendation H.263 was adopted into that draft. The compatibility was achieved by an alignment of complete syntax support for the primary "Baseline" interoperability operational mode of Rec. H.263. This is an important event in video coding standardization development, ensuring that the new implementations of the future MPEG-4 video standard (FCD for ISO/IEC 14496-2) can have full compatibility with the deployed implementations of Rec. H.263 worldwide. This action sends a clear message that H.263 technology remains at the heart of today's understanding of low bit-rate video compression coding, and that interoperability of these standardized systems is needed world-wide. ITU-T Recommendation H.263 is a video coding standard developed by the International Telecommunications Union (Telecommunications Standardization Sector, formerly CCITT). It was originally approved in November of 1995 and is maintained by the ITU-T Advanced Video Coding Experts Group, formally chartered as Question 15 of the ITU-T Study Group 16 for Multimedia Standardization. Newly approved in a second-generation specification completed in September of 1997 and approved in January of 1998, Rec. H.263 is the current "flagship" ITU standard for low bit rate video communication coding. The "Baseline" mode which forms the heart of H.263 operation was the fundamental requirement for all implementations of the original H.263 specification and is now also fully supported in both the second version of H.263 and in the new draft of MPEG-4 video. The H.263 Baseline mode provides an excellent interoperable common core for video coding systems. MPEG-4 video, to be formalized in ISO/IEC 14496-2, is a project of the Moving Picture Experts Group (MPEG) formally chartered as Working Group 11 of ISO/IEC JTC1 SC29. The MPEG-4 video coding standardization project is developing its specification to provide a broadly-applicable and flexible set of video coding tools and defined configuration profiles for a wide range of multimedia applications with new functionalities such as object-segmented coding and the handling of hybrids of natural and synthetic content. The first of two planned versions of MPEG-4 video is now in a "final committee draft" stage and is expected to receive final approval in December of 1998. I want to thank those who helped bring about this important convergence of standardization development. In particular I would like to thank the MPEG convenor Mr. Leonardo Chiariglione, the MPEG Video chairman Mr. Thomas Sikora, the MPEG Video Coding Efficiency chairman Mr. T. K. Tan, and the supporting MPEG National Bodies of Canada, France, Norway, and the Netherlands. I also wish to especially thank those individuals who recently actively contributed toward the final detailed technical evaluation, proposal, and drafting process for this effort, in particular especially Ms. Gunn Kristin Klungsoyr, Mr. Cor Quist, Mr. Aasmand Sandvand, Mr. Peter List, and Ms. Cecille Dufour. I also wish to thank those who contributed toward this goal previously at critical moments, in partular Mr. Robert Danielsen, Mr. Tom-Ivar Johansen, Mr. Richard Schaphorst, Prof. Faouzi Kossentini, and Mr. Jan De Lameillieure. Sincerely, Gary Sullivan ITU-T Advanced Video Coding Rapporteur PictureTel Corporation This is not an official statement of PictureTel or of ITU-T Q15/SG16.

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Contributions APC-1328 and APC-1329
by Markku Korpi 23 Mar '98

23 Mar '98

<fontfamily><param>Arial</param><color><param>0000,0000,ffff</param><bigger>I have just uploaded the following Siemens contributions to the PictureTel incoming site: - APC-1328 on Call Hold supplementary service - APC-1329 on Cal Park and Pickup supplementary service They are in Word 8.0/'97 format. --Markku ------------ Markku Korpi, Siemens 4900 Old Ironsides Dr., P.O.Box 58075, Santa Clara CA 95054 Phone: +1 408 492 7328, E-mail: korpim(a)sbs.de </bigger></color></fontfamily>

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Handover of the Q.12-14/16 ftp site
by Sakae OKUBO 22 Mar '98

22 Mar '98

Dear SG16 colleagues, Since GCL is going to terminate its R&D activities on 31 March 1998 as set out at the time when it was established 5 years ago, we have to close the GCL ftp site that has been used for the Q.12-14/16 experts group. In this situation, PictureTel has kindly offered to change its mirror site to the primary site. Mr. Bob Webber will continue to manage the operation of this ftp site and I will continue to manage the APC-numbered and other documents stored at this site. Though the GCL ftp site will be working by the end of this month, please take the following actions right now: 1) For retrieval of the documents, please change the URL to ftp://standard.pictel.com/avc-site/ or http://standard.pictel.com/ftp/avc-site/ from ftp://itu-t:sg15!avc@ftp.gctech.co.jp/ 2) For uploading your contributions, please send it to ftp://standard.pictel.com/avc-site/Incoming/ and send an e-mail to me when you have finished your uploading. Best regards, Sakae OKUBO (Mr.) ******************************************************************** Graphics Communication Laboratories Phone: +81 3 5351 0181 6F ANNEX TOSHIN BLDG. Fax: +81 3 5351 0184 4-36-19 Yoyogi, Shibuya-ku, Tokyo e-mail: okubo(a)gctech.co.jp 151-0053 Japan ********************************************************************

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