Handling of channel failures (H.323v2 clause 8.6)

[Chris Purvis]

Karl,

The paragraph to which you refer seems to me to say "the endpoint may choose
to terminate the call as described in Phase E, or it may attempt to
re-establish the Call Signalling Channel as described above.".  This is a
lot more explicit than "the procedures described above shall be used" - it
says, in fact that an endpoint may follow either of the courses of action
you describe.  A gatekeeper, however, would appear to be obliged to do the
first: I wonder how many do!

Regards,
Chris

> -----Original Message-----
> From: Klaghofer Karl ICN IB NL IP 7
> [mailto:Karl.Klaghofer at ICN.SIEMENS.DE]
> Sent: 16 March 1999 6:25
> To: ITU-SG16 at MAILBAG.INTEL.COM
> Subject: Handling of channel failures (H.323v2 clause 8.6)
>
>
> > H.225.0 channel failure:
> > Section 8.6 of H323 V2 second para states that in the case
> of a protocol
> > failure of the
> > H225 channel it is possible for an endpoint to attempt to
> reestablish the
> > H225 channel and continue the call.
> >
> > H.245 channel failure:
> > At the end of section 8.6 (second last para)  it states that
> > in the case of a failure of the H245 channel the
> "procedures described
> > above" shall be used. Which procedures are referred here ?
> >
> > a) the procedures described for the signalling channel
> failure case in the
> > second para, allowing a channel re-establishment. This
> would mean that in
> > case of a H.245 channel failure the H.245 channel may be
> re-established.
> > If re-establishment is successful, the call may continue. Only if
> > re-establishment fails, the call would have to be
> terminated according to
> > what is sayd in para 1.
> >
> > b) the procedures described for H.245 channel failure in the first
> > paragraph; which would mean that the call would have to be
> terminated. No
> > H.245 channel re-establishment attempt is allowed.
> >
> > Thanks,
> > Karl
> > ------------------------------------------------
> > Karl Klaghofer, Siemens AG, Dpmt. ICN IB NL IP7
> > Hofmannstr. 51, D-81359 Munich, Germany
> > Tel.: +49 89 722 31488, Fax.: +49 89 722 37629
> > e-mail: karl.klaghofer at icn.siemens.de
> >
>