Hello Sasha, It looks like the editorial version was fixed by the TSB during publishing. The published version uses cvsp. Regards, Christian Sasha Ruditsky wrote:

Hi Christian

Thanks, I understand now the definition of vwp/wxp and vwp/wyp.

Regarding to the editorial problem. In the version, which I have (which is TD33(PLEN) from Geneva Jan 2004 meeting) in the figure 8 the text says:

Property Group 1 vwp/vid=1,vwp/wseq=1,vwp/wxp=2500,vwp/wyp=0, vwp/wh=7500,vwp/wl=5000,vwpcvsp/ovs=2 Property Group 2 vwp/vid=2,vwp/wseq=2,vwp/wxp=5000,vwp/wyp=2500, vwp/wh=7500,vwp/wl=5000,vwpcvsp/ovs=1

Regards, Sasha

-----Original Message----- From: Christian Groves [mailto:christian.groves@ERICSSON.COM] Sent: Sunday, June 19, 2005 10:21 PM To: Sasha Ruditsky Cc: itu-sg16@external.cisco.com Subject: Re: The question about extension of an H.248 package.

Hello Sasha,

Please see my response below.

Regards, Christian

Sasha Ruditsky wrote:

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Hi Christian

Thanks, again.

It looks like I will have some more question about H.248.19.

Meanwhile.

In H.248.19 defines vwp/wxp and vwp/wyp as being from 0 to 10000.

The description text states: This property is set by the MC to represent the horizontal "X" position of the bottom left hand corner of a window. 0 represents the left hand side of a screen, 10000 the right hand side

...

of a screen.

So it makes the size of the screen equal to 10001 units.

In the same time vwp/wh and vwp/wl are also defined to be 0 to 10000.

I think it means that it is impossible to create window which fills the entire screen. (Screen is 10001 units and the biggest window is only 10000).

[CHG] Given a display 10000 by 10000 pixels the way I saw the property working was that 0,0 represented the bottom left hand corner of the display/window. A window position 0,0 size 1,1 would draw a pixel 1,1 starting at this point. A window placed at 10000,10000 couldn't actually have a positive size as it would exceed the display.

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Do I misunderstand the description text? Shouldn't the vwp/wxp and vwp/wyp be defined in range from 0 to 9999? Or probably the range is OK, however the 10000 is outside of screen?

[CHG] So technically 10000 is outside the meaningful range for displaying anything.

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What do you think? ====================================================================

Another small editorial issue is that in H.248.19 on Figure 8 the text

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references the vwpcvsp/ovs, where I believe it should be cvsp/ovs.

[CHG] Is the editorial issue in Figure 8 itself? It should be cvsp/ovs but I can't see where the error occurs.

...

Thanks, Sasha

-----Original Message----- From: Christian Groves [mailto:christian.groves@ericsson.com] Sent: Thursday, June 16, 2005 8:55 PM To: Sasha Ruditsky Cc: itu-sg16@external.cisco.com Subject: Re: The question about extension of an H.248 package.

Hello Sasha,

In thus case the text encoding would use H.248.15 Gateway control protocol: SDP H.248 package attribute.

Regards, Christian

Sasha Ruditsky wrote:

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Hi Christian

Thanks.

One more question. In H.248.19 most of the properties inside packages are specified to be

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"Defined in: Local/Remote".

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From what I know about H.248 -- local/remote descriptors contain SDP messages.

How do the H.248.19 properties coexist with SDP? Is it only possible in binary encoding mode?

Thanks, Sasha

-----Original Message----- From: Christian Groves [mailto:christian.groves@ERICSSON.COM] Sent: Thursday, June 16, 2005 12:35 AM To: Sasha Ruditsky Cc: itu-sg16@external.cisco.com Subject: Re: The question about extension of an H.248 package.

Hello Sasha,

There is no hard rule of what to propose. It really depends on the type of information you want added.

I think the only time the package extension should be used is if the added properties/signals/events provide a set of functions of their own right. e.g. would it makes sense that these properties could be a package by themselves but need another package to operate. For example: The tone gen package. The DTMF was added as a extension package as DTMF generation is its own subset functionality but is related to the generation of tones.

Regards, Christian

Sasha Ruditsky wrote:

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Hi

I'm working on a proposal for July meeting to add some new properties

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...

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to one of the H.248.19 packages.

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From H.248 document it appears that there are defined (at least) two ways of doing this.

* Creating a new version of an existing package * Creating a new package that extends the existing one.

Can somebody please comment on the factors helping to determine which

...

...

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of these two mechanisms should be uses?

Thanks, Sasha .