Visa Notification for the Beijing meeting (11-14 May)

[OKUBO Sakae]

Paul,

The CHOICE, UserInputIndication.userInputSupportIndication.basicString,
means that a UII transmitter must only send 0-9, * and #. The attached
email explains the rationale. This codepoint does not mean that
transmitters must send these but can also send others because that would
be redundant with 6.2.8/H.323v2: "H.323 terminals shall support the
transmission of user input characters 0-9, '*', and '#'. Transmission of
other characters is optional."

Paul

-----Original Message-----
From: Paul E. Jones [mailto:paulej at PACKETIZER.COM] 
Sent: Tuesday, March 16, 2004 12:48 PM
To: Dave Lindbergh
Cc: itu-sg16 at external.cisco.com; Mike Nilsson
Subject: Re: H.245 User Input Indication question

Dave,
 
Thanks for looking into this.  Hopefully, Mike might have some
recollection as to what this was intended for.  It has been there for
quite some time.
 
Paul
 
----- Original Message ----- 
From: Dave Lindbergh 
To: Dave Lindbergh 
Cc: Paul E. Jones ; itu-sg16 at external.cisco.com ; Mike Nilsson ; Paul
Long 
Sent: Tuesday, March 16, 2004 1:32 PM
Subject: Re: H.245 User Input Indication question

Paul,

I've just looked at H.245, and I can't figure it out either.

I suggest that once we figure it out (or decide to deprecate it, if we
can't figure it out), we add some text to H.245 to clarify this.

Sorry.

--Dave

At 11:57 AM 3/16/2004, Dave Lindbergh wrote:

At 11:53 AM 3/16/2004, Paul E. Jones wrote:

Dave,
 
So, I'm still confused.  "are supported" means:
  a) The device may ONLY send that subset of characters?
  b) The device must support that subset, but may send others?

Neither (but closer to b).  It means the device DOES support that
subset.  It might also support others, might not.  There's no "must" or
"shall" about it - it's a statement about what the device actually does.



Also, any insight into what the "userInputSupportedIndication" element
is for within "UserInputIndication"?

I'll try to look into that later today.

--Dave



Thanks,
Paul
  
----- Original Message ----- 
From: Dave Lindbergh 
To: Paul E. Jones 
Cc: itu-sg16 at external.cisco.com ; Mike Nilsson ; Paul Long 
Sent: Tuesday, March 16, 2004 11:48 AM 
Subject: Re: H.245 User Input Indication question
Hi Paul,
My recollection is that "are supported" was meant to indicate that the
device can send those characters.  (I think UII can send anything in the
ASCII, and perhaps the Unicode, set.)
The purpose of the "are supported" bit is to allow an automatic menu
generator to limit the kinds of input it requests to what the far-end
terminal can actually send.  (weak example: "Press # for Customer
Service" vs "Type SERVICE for Customer Service")...in fact people have
used UII to do things like text chat, which is difficult with only a
phone keypad.
--Dave
At 11:40 AM 3/16/2004, Paul E. Jones wrote: 
Folks, 
I have a question regarding H.245 User Input Indication.  In section
B.14.6, it states: 
    "The boolean basicString, when true, indicates that the characters
0-9, * and # are supported." 
My question is whether that those characters are supported means that it
is the only valid characters that may be transmitted?  Or is it also
valid to transmit A,B,C,D, for example?  In other words, does this
wording simply indicate the minimum set of characters that must be
supported or is the wording intended to specify the complete set of
characters that may be used with "basicString". 
H.323 Section 6.2.8 simply says that "alphaNumeric" must be supported
and that the characters 0-9, * and # must be supported and others are
optional.  However, it does not speak to whether endpoints must
advertise support for basicString, IA5String, etc. 

A second question: can somebody explain why there is a CHOICE of
"userInputSupportIndication" inside the UserInputIndication message? 
Would we not always advertise capabilities via the UserInputCapability
only?  Is the intent of having the "userInputSupportIndication" for
changing capabilities outside of a normal capability exchange. 
Any clarification you can provide would be most appreciated. 
Thanks, 
Paul 
 
---------- 
Dave Lindbergh 
Polycom, Inc. 
100 Minuteman Road 
Andover MA 01810  USA 
Voice: +1 978 292 5366 
Email: lindbergh at 92F1.com 
H.320, H.323 video by arrangement
----------
Dave Lindbergh
Polycom, Inc.
100 Minuteman Road
Andover MA 01810  USA
Voice: +1 978 292 5366
Email: lindbergh at 92F1.com
H.320, H.323 video by arrangement
----------
Dave Lindbergh
Polycom, Inc.
100 Minuteman Road
Andover MA 01810  USA
Voice: +1 978 292 5366
Email: lindbergh at 92F1.com
H.320, H.323 video by arrangement
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From: "Paul Long" <plong at ipdialog.com>
Subject: Re: What is the purpose of UserInputSupportIndication in              UserInputIndication and where are the string types used?
Date: Tue, 29 May 2001 09:32:48 -0600
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