Re: [H.323 Mobility:] A new editor's draft H.323 Annex H
Hi,
Sorry for the late response, but I wasn't able to read my mails during the last week.
The latest version of H.323 Annex H is the TD-47 from the Osaka meeting, ftp://standard.pictel.com/avc-site/0005_Osa/TD-47.zip . TD-56 includes the meeting notes from the Ad hoc group meetings in Osaka, but I'm afraid that no meeting minutes from the last teleconference are available. I can tell you, though, that in the last teleconference the H323AnnexH_EditorsDraft was presented by me and some minor changes were introduced by the group after which the result of that was produced as the contribution APC-1816 for the Osaka meeting.
I hope this helps.
-Jaakko
-----Original Message----- From: EXT Tiruthani, Saravanakumar [mailto:Saravanakumar.Tiruthani@ICN.SIEMENS.COM] Sent: 18. May 2000 1:15 To: ITU-SG16@mailbag.cps.intel.com Subject: Re: [H.323 Mobility:] A new editor's draft H.323 Annex H
Hi,
Do we have the latest version of Annex H after the recent tel conference on mobility? Is the editor's draft standards.pictel.com/avc-site/Incoming/Mobility-AHG/H323AnnexH _EditorsDraft. zip the latest? Is the minutes available for the teleconference?
Any help will be greatly appreciated. Thanks, Saravanakumar V. Tiruthani Siemens ICN
-----Original Message----- From: Roy, Radhika R, ALARC [mailto:rrroy@ATT.COM] Sent: Tuesday, May 09, 2000 7:45 AM To: ITU-SG16@mailbag.cps.intel.com Subject: Re: [H.323 Mobility:] A new editor's draft H.323 Annex H
Hi, Jaakko:
- Home/Visited/Target/Visiting Network Address
A quick reply related to your comment about mobile IP.
The mobile IP cannot do the job of H.323 in the application layer deals with multimedia: audio, video, and/or video.
However, if hooks are already there in the H.323 layer, only then mobile IP or other methods as appropriate can be used in the lower layer (e.g., IP, ATM) to do the job.
So, the abstraction of home/visiting/foreign/target network address (or NPoA) should be there in the H.323 application layer.
I hope that this will clarify the FUNDAMENTAL points of mobility management that AT&T contributions have explained.
- GK Discovery
MGA is another alternative option for the GK discovery. It is also very efficient when compared to the GRQ mechanisms. MGA is an OPTION, not mandatory.
If some people do NOT like this, they may use the GRQ messages if they feel they are happy with it in the cellular environment. AT&T does NOT like to use the inefficient GRQ messages.
- Centralized/Distributed HLFs
AT&T contributions show message flows for all configurations of HLFs: Centralized and Distributed. The contributions show that it is the same messages that used for all cases.
- Location_Req
You are now using NEW messages location_req messages for mobility messages. AT&T contributions propose the new messages like mobility binding updates.
You are requested to look into these contributions instead of going too.
- Communications between HLFs for inter-domain communications.
AT&T contributions show that this is NOT the scope of H.323. It is a protocol between the servers. This is nothing to do with the H.323 protocol. The same is true for directory server to directory server protocol, billing server to the billing server protocol, etc.
- Other comments
We will discuss in the conf call and Osaka.
Best regards, Radhika R. Roy AT&T
-----Original Message----- From: Jaakko Sundquist [SMTP:jaakko.sundquist@nokia.com] Sent: Tuesday, May 09, 2000 8:10 AM To: ITU-SG16@MAILBAG.INTEL.COM Subject: Re: [H.323 Mobility:] A new editor's draft
H.323 Annex H
Hi Radhika,
Find my comments embedded...
I hope that you have been enjoying the ice-hockey.... Section 9.1.1:
Like home domain, AT&T contribution has provided the detail description of home GK/zone from a user point. Accordingly, home network address (network point attachment) has been explained. In a given zone, a mobile may move from one NpoA to another. Like foreign (or visited/visiting/target) domain, AT&T contribution has also explained the foreign (or visited/visiting/target) network address (or NpoA). The subsequent emails have also been sent explaining the things.
With regards to the home GK, I am considering that it may be a good concept to introduce for some purposes (mainly because of GK
discovery issues and
the Virtual Home Environment concept), but I have not yet
introduced in
the draft, because I want to have a clearer picture of how the
concept would
be used. I certainly do not like the idea of always having to
contact the
home GK in order to be able to use the H.323 services, nor do I
like having to
contact the HLF through the (home) GK. In other words I am
willing to add
the concept as soon as we have agreed on the semantics of
it. I still do
not see the merit of the home NPoA concept, I do not think it
adds anything
that could not be achieved by using e.g. mobile IP.
Hope to discuss the same in tomorrow's conf call.
I am also curious to know which the team won the ice-hockey.....
The Hentunen-Kapanen-Lind attacking line was quite superb...
- Jaakko
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Jaakko Sundquist