Bob,
H.323 says that only the GK may close the call-signaling channel (7.3.1/H.323v3) or the channel may fail (8.6). It also says that the GK or EP may attempt to re-establish the channel (7.3.1 and 8.6, respectively). This implies that both entities must be receptive to the other entity re-establishing the call-signaling channel. Once the channel has been re-established, it is up to the GK to synchronize call state with the EP via a Status Inquiry/Status exchange.
Paul Long Smith Micro Software, Inc.
-----Original Message----- From: Callaghan, Robert [mailto:Robert.Callaghan@ICN.SIEMENS.COM] Sent: Thursday, January 06, 2000 7:06 AM To: ITU-SG16@MAILBAG.INTEL.COM Subject: Re: Closing Q.931 TCP connection..
Boaz,
This is a missing point in this discussion. The proposal is to close the Call Signaling channel because it is anticipated that there is no additional use for the channel. If this anticipation is wrong, a procedure is required to reopen the call signaling channel and to resynchronize all the state information.
What is the proposed procedure for reopening this channel?
Please do not state that your application does not use H.450 or any other subsequent use of the call signaling channel. Even though your gatekeeper does not use H.450, my endpoint does and interworking is required.
Bob
------------------------------------------------------------------ Robert Callaghan Siemens Information and Communication Networks Tel: +1.561.997.3756 Fax: +1.561.997.3403 Email: Robert.Callaghan@ICN.Siemens.com ------------------------------------------------------------------