Paul, yes. Reading through the definitions section of H.323 (again;-)), made me realize that it states that the definitions from H.225.0 and H.245 also apply to the H.323 Recommendation. I suppose that things are covered this way. Nevertheless, to improve readability, it wouldn't hurt to add explicit references to definitions for things that are rather important. Frank paulej@packetizer.com on 28/01/2001 21:48:30 To: ITU-SG16@mailbag.cps.intel.com@SMTP Frank Derks/HVS/BE/PHILIPS@EMEA2 cc: Subject: Re: Re: The meaning of "mode" in the H.323 Recommendation? Classification: Frank, I trust that Mike's answer to "mode" addresses your concerns. With respect to "H.225.0 logical channel signalling", yes.. that should be H.245. Paul ----- Original Message ----- From: "Frank Derks" <frank.derks@PHILIPS.COM> To: <ITU-SG16@mailbag.cps.intel.com> Sent: Friday, January 26, 2001 8:04 AM Subject: Re: The meaning of "mode" in the H.323 Recommendation?

Paul,

the sections I was referring to are the following:

- 6.2.8.1, 5th paragraph: "The transmitting terminal assigns each individual mode ..." - 6.2.8.1, 6th paragraph: "... audio modes ..." - 6.2.8.1, 7th paragraph: "... indicates a set of modes ..." - 6.2.8.1, 1st paragraph after the notes: "... dependencies between operating modes ...", "...different sets of modes ..." - 6.2.8.2, 3rd paragraph: "... certain symmetrical modes ...", " ... using a particular mode ..."

Undoubtedly it appears in more places.

Something else that struck as strange, was section 6.2.8.6. It mentions H.225.0 logical signalling procedures and H.225.0 logical channels. I would assume that these should read "H.245".

Frank

paulej@PACKETIZER.COM@SMTP@MAILBAG.INTEL.COM on 26-01-2001 11:03:30 Please respond to paulej@PACKETIZER.COM@SMTP Sent by: ITU-SG16@MAILBAG.INTEL.COM To: ITU-SG16@MAILBAG.INTEL.COM@SMTP cc: Subject: Re: The meaning of "mode" in the H.323 Recommendation? Classification:

Frank,

I would need to look at the particular section of text or sections :-), but I if it isn't clear, I'd agree that it should be clarified. Unfortunately, it's too late to get such text into H.323 version 4.

If it is a short list of sections, post them here and I suspect folks will be able to get an answer to you before I get back into the office (I'm currently on the road). If the list is lengthy, just send it to me and I'll look at the sections when I get a chance. Do you think this is something that needs clarification in the implementers guide or something to try to get into v5?

Paul

----- Original Message ----- From: "Frank Derks" <frank.derks@PHILIPS.COM> To: <ITU-SG16@mailbag.cps.intel.com> Sent: Tuesday, January 23, 2001 7:33 AM Subject: The meaning of "mode" in the H.323 Recommendation?

...

Paul,

as I was reading through the latest draft of H.323v4, I came across something that has been in the recommendation for a long time, but that I never quite grasped: "mode". The recommendation talks about "mode" and there is a (H.245) message to request a terminal to use a certain "mode" (requestMode), but there is no explanation of what "mode" actually means. Shouldn't there be a definition of "mode" in the Definitions section?

Regards,

Frank

----------------------------------------------------- Frank Derks |Tel +31 35 6893238 | Advanced Development |Fax +31 35 6891030 | Philips Business Communications|P.O. Box 32 | |1200 JD Hilversum | |The Netherlands | ----------------------------------------------------| E-mail: mailto:frank.derks@philips.com | WWW: http://www.sopho.philips.com | -----------------------------------------------------

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