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Re: [Sipping-emergency] Call hold

Henning Schulzrinne <hgs@cs.columbia.edu> Fri, 04 April 2003 22:58 UTC

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Date: Fri, 04 Apr 2003 17:59:12 -0500
From: Henning Schulzrinne <hgs@cs.columbia.edu>
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To: Mary Barnes <mbarnes@nortelnetworks.com>
CC: sipping-emergency@ietf.org
Subject: Re: [Sipping-emergency] Call hold
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Mary Barnes wrote:

> Henning,
> 

> took a look and this is the detailed information that is described at a high
> level for Nortel's product (per that other URL I had sent)  around the SS7
> support for the Connection Hold. (For ISDN, it's not possible to prevent the
> disconnect, so that's why they need the dialback).  The first line of the
> addendum is the deletion of that text in section 6.1.4 referenced in your
> initial email below. Are you certain that was from TR.628-2001 (and not
> 2000) as the one document is the addendum to TR.628-2000 and I couldn't find
> a TR.628-2001? 

No, I suspect that whoever sent it to me introduced a typo, given the 
two documents and their different years.



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