Dear Gunnar Hellstrom, Very thanks for your comments. About your reminded questions, I have some opinion as below for your reference. "1.Scope collision with F.703 Multimedia Conversation Service Description..." Here is a clarification for scope description about F.703 and F.VTIP. F.703 describes a general requirements of multimedia conversation service, many conversation services are covered in it, such as videotelephony, etc. And for each specific service, for example videotelephony service, it is necessary to describe the detailed requirement. So F.720 describes the sub-general requirements of videotelephony service, then F.721 for ISDN, F.723 for PSTN videotelephony service respectively, and F.VTIP intends to describe the requirements of IP videotelephony service. "2. The real time text medium is missing in the definition..." I agree that real time text medium is very important for people with hearing or speech disabilities. In F.VTIP, the IP videotelephony service is divided into basic and enhanced service, the real time text medium has been included in enhanced IP videotelephony service, I'm considering how to emphasize these features in F.VTIP. Sincerely thanks again for your kind advice. Best Regards, Qing Zhang
----- Original Message ----- From: "Gunnar Hellstrom" <gunnar.hellstrom@omnitor.se> To: "OKUBO Sakae" <okubo@MXZ.MESH.NE.JP>; "zhangqing"
<q_zhang@huawei.com>
Cc: <itu-sg16@external.cisco.com> Sent: Wednesday, July 20, 2005 5:48 AM Subject: RE: ABOUT F.VTIP
Dear Qing Zhang,
I have read the F.VTIP draft and have a couple of questions/comments:
1. Scope collision with F.703 Multimedia Conversation Service Description.
It is not earlier habit of F.70x Recommendations to be network type specific. They describe multimedia service requirements in general terms, from the human point of view regardless of network type. F.703 already defines and describes the Video Telephony service and should be interpreted to define it on both circuit switched and IP networks. I think having an IP specific definition of Video Telephony in the F.70x series creates confusion. Today, we also have an emphasis of evening out network influence on service experience in the NGN activities. I suggest that you drop the IP specifics in this draft and merge it as an update to F.703.
2. The real time text medium is missing in the definition. ---------------------------------------------------------- In F.703 there is a service defined called "total conversation". It is a very impotant superset of video telephony created by adding real time conversational text medium to video telephony. The text is transmitted with the same flow as it is typed in order to give the call participants a good feeling of being in contact. No irritating waiting for the other one to complete a sentence, it all can be read by the participants as it is
-------------------------------------------------------------------------- produced.
This addition has been driven by requirements from people with hearing or speech disabilities, but the feature has very general value.
SG16 has been quite aware of the need to take accessibility for people with disabilities in account when creating Recommendations. This trend is finally spreading to other groups, and F.703 and other mainstream Recommendations with accessibility included form very important references in the work with deployment of accessible mainstream services.
If advice no 1 to merge your document with F.703 is not followed, I suggest that IP total conversation is added to the F.VTIP draft with a description similar to the one for total conversation and the text medium in F.703. I suggest that you declare three media to be normal for IP Video telephony; video, text and audio.
Best regards
Gunnar Hellström ------------------------------------------- Gunnar Hellström Omnitor AB Renathvägen 2 SE 121 37 Johanneshov SWEDEN +46 8 556 002 03 Mob: +46 708 204 288 www.omnitor.se Gunnar.Hellstrom@Omnitor.se --------------------------------------------
-----Original Message----- From: zhangqing [mailto:q_zhang@huawei.com] Sent: Tuesday, July 12, 2005 6:09 PM To: OKUBO Sakae Cc: itu-sg16@external.cisco.com Subject: ABOUT F.VTIP
Dear Mr. Okubo and all,
Attached file is the new edition of F.VTIP.
I appreciate the comments from Mr.Okubo and Mr. Blin Jean-Pierre, more comments and suggestions are solicited.
Best regards,
Qing Zhang Huawei Technologies Co., Ltd Tel : +86-755-89650436 Fax : +86-755-89651312 Mobile: +86-13316881228 E-mail: q_zhang@huawei.com
----- Original Message ----- From: "OKUBO Sakae" <okubo@MXZ.MESH.NE.JP> To: <itu-sg16@external.cisco.com> Sent: Tuesday, July 12, 2005 10:49 AM Subject: SG16 meeting during 26 July - 5 August
Dear WP2/16 experts,
Here are two pieces of information and request toward the upcoming SG16 meeting.
1/ Q.5 Rapporteur
Very unfortunately Mr. Bob Gilman advised the SG16 management of his resignation from Q.5 Rapporteur and we reluctantly have to accept this. As an emergency measure we have asked Mr. Paul Jones to lead the Q.5 works at the upcoming SG16 meeting.
Using this opportunity I would like to thank Bob not only for his excellent leadership in the NAT/firewall traversal issue as Rapporteur, but also for his valuable contributions to the H.323, H.235 and other SG16 topics as expert since around 1999.
2/ Documents for the meeting
Since this meeting is of Study Group level, all the documents are handled by TSB, not by a Rapporteur.
However, you may wish to upload your documents to the avc-site for advance review by the experts. In that case, place your document at:
ftp://ftp3.itu.int/avc-site/Incoming/ user: avguest password: Avguest
or email it to me, then I will move it to:
http://ftp3.itu.int/av-arch/avc-site/2005-2008/0507_Gen ftp://ftp3.itu.int/avc-site/2005-2008/0507_Gen user: avguest password: Avguest
-- Best regards,
OKUBO Sakae e-mail: sokubo@waseda.jp Visiting Professor Graduate School of Science and Engineering Waseda University ****************************************************************** Waseda University, YRP Ichibankan 312 Tel: +81 46 847 5406 3-4 Hikarinooka, Yokosuka-shi, Kanagawa-ken Fax: +81 46 847 5413 239-0847 Japan H.323 videoconferencing: arranged by advice ******************************************************************