H.323 AnnexD & mandatory fax OpenLogicalChannel elements

[joachim.fabini at SEA.ERICSSON.SE]

> -----Original Message-----
> From: vineet.kumar at INTEL.COM [mailto:vineet.kumar at INTEL.COM]
> Sent: Thursday, May 06, 1999 11:35 PM
> To: ITU-SG16 at mailbag.cps.intel.com
> Cc: vineet.kumar at INTEL.COM
> Subject: Re: H.323 AnnexD & mandatory fax OpenLogicalChannel elements
>

Vineet,

I do have the recommendation H.323AnnexD that is available
from the ITU website.
The sentence can be found on page 4 (D.7: Interactions with
gateways and T.38/AnnexB devices), second paragraph.

Furthermore, section D.2 (Scope) says, that "An H.323 terminal
that supports the procedures of this Annex shall interwork with
T.38/AnnexB terminals". The interoperability with T.38 AnnexB
terminals thus is mandatory.

My understanding of this is that AnnexD compliant H.323
gateways must use the fastStart procedures and open both,
fax and voice channels when the receiving gateway is
also a H.323 terminal supporting AnnexD.

--Joachim

>
> I think you have a draft version of Annex D and not the
> decided version. I can't find the sentence you mentioned
> in your email in my copy of Annex D.
>
> vineet