New subject: Conflicting text in H.323 concerning the requirement for esta blishing a H.245 control channel??

20 Mar 2001


      which defeats the whole point of having a Fast Connect procedure (FS +
H.245).  Why isn't in-band- DTMF transfer used instead (in FS)?

-Charles
...
-----Original Message-----
From: Frank Derks [mailto:frank.derks@PHILIPS.COM]
Sent: Tuesday, March 20, 2001 4:40 PM
To: ITU-SG16@MAILBAG.INTEL.COM
Subject: Re: Conflicting text in H.323 concerning the requirement for
establishing a H.245 control channel??
Chris,
I thought I was being clear enough, so let me try again.
6.2.8/H.323 states
that an enpoint must open one (and exactly one) H.245 control
channel. When
Fast Connect is being used, I assume that the intention is
that no such control
channel is opened.
To be compliant with 6.2.8/H,323 I would have to open a H.245
control channel
irrespective of which type of H.245 procedures I will be
using. So if I intend
to use Fast Start (and assuming that the other party also
supports this), I
still have to open a H.245 control channel.
Frank
cwp@isdn-comms.co.uk on 20-03-2001 15:17:14
To:     Frank Derks/HVS/BE/PHILIPS@EMEA2
cc:     ITU-SG16@mailbag.cps.INTEL.COM@SMTP
Subject:        Re: Conflicting text in H.323 concerning the
requirement for establishing a H.245 control channel??
Classification:
Frank,
Why do you consider this text to be "conflicting"?
Specifically, with what does it conflict?
Regards,
Chris
...
6.2.8/H.323 states: "The endpoint shall establish exactly one H.245
Control Channel for each call that the endpoint is
participating in."
8.1.7/H.323 never states that when Fast Connect is being used such a
control channel should be established. As far as I understand the
mechanism this is only required to switch to "normal" H.245
procedures.
It would seem that section 6.2.8 should be rephrased to
make clear that
the H.245 control channel shall only be established when
"normal" H.245
procedures are being followed and not in the fast connect case.
Frank
--
Dr Chris Purvis -- Development Manager
ISDN Communications Ltd, The Stable Block, Ronans, Chavey Down Road
Winkfield Row, Berkshire.  RG42 6LY  ENGLAND
Phone: +44 1344 899 007
Fax:   +44 1344 899 001
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Re: Conflicting text in H.323 concerning the requirement for esta blishing a H.245 control channel??

Agboh, Charles

Chris Wayman Purvis

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