It is in ITU-T H.323v4 (2000):
http://www.itu.int/itudoc/itu-t/approved/h/h323.html
> -----Original Message-----
> From: Hans Viens [mailto:hviens@MEDIATRIX.COM]
> Sent: Thursday, May 31, 2001 8:04 AM
> To: ITU-SG16@MAILBAG.INTEL.COM
> Subject: H.323 Annex D v2
>
>
> Hi Folks!
> Does anyone could tell me where I could found H.323 Annex D
> v2 (with H.323
> v4) ?
> Thanks,
> Hans
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> For help on this mail list, send "HELP ITU-SG16" in a message to
> listserv@mailbag.intel.com
>