Fast Connect - Switching to H.245 procedure / UII vs. Keypad IE

[Dan Davidson]

(This mail is a fusion of two previously separated streams:
 Fast Connect - Switching to H.245 procedure and UII vs. Keypad IE)

Paul,
	All this would mean that when using fast connect to set-up a call against
and IVR (i.e. calls in which DTMF are sent immediately after call set-up),
H.245 UII
messages shall be used for DTMF transport and the first H.245 UII message
has to be preceded by Capability Exchange and Master Slave Determination
procedures.
Isn't this slow ( and I'm not counting in all the TCP connection set-up when
tunnelling is not supported)?

Isn't there a faster, standardised, way to convey DTMF when using fast
connect ?

Thanks,
Dan

-----Original Message-----
From: Paul E. Jones [mailto:paulej at packetizer.com]
Sent: Tuesday, October 31, 2000 7:59 AM
To: Dan Davidson; h323implementors at imtc.org
Subject: Re: UII vs. Keypad IE

Dan,

An endpoint that communicates with a SET device may certainly do this-- and
must if they expect to get DTMF digits from a SET device.  However, two
non-SET devices should not use this method.  As far as I know, there is no
means of signaling to the other endpoint that you have the "capability" of
using the keypad IE.  That means that any non-SET device must use UII.

That might be something worth considering as a means of removing further
dependencies on H.245.  We could very easily add such support and signal it
within H.225.0.  However, I have seen no proposals for that.

Paul

-----Original Message-----
From: Paul E. Jones [mailto:paulej at packetizer.com]
Sent: Tuesday, October 31, 2000 7:59 AM
To: Dan Davidson; h323implementors at imtc.org
Subject: Re: Fast Connect - Switching to H.245 procedure


Dan,

There's nothing hidden there.  Essentially, this text is re-enforcing the
idea that Fast Connect does not somehow bypass any of the H.245 messages
(except that channels are opened).  When starting H.245, you send the H.245
terminal capability set and the master/slave determination messages as
appropriate.

Paul

----- Original Message -----
From: "Dan Davidson" <dan.davidson at commatch.com>
To: <h323implementors at imtc.org>
Sent: Monday, October 30, 2000 2:38 PM
Subject: Fast Connect - Switching to H.245 procedure


>
> The H.323v2 Recommendation describes the Fast Connect procedure and
mentions
> that if necessary, a H.245 connection can be established.
>
> It also mentions: " When H.245 procedures are activated, all mandatory
> procedures of
> H.245 that normally occur upon initiation of an H.245 connection shall be
> completed prior
> to initiation of any additional H.245 procedures."
>
> Question: What are the H.245 mandatory procedures the recommendation
refers
> to ?
>
> Dan
>
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