AW: TD-54a/Osaka: New ReleaseCompleteReason for Annex M?
Klaghofer Karl ICN SIB NL D1
Karl.Klaghofer at ICN.SIEMENS.DE
Mon Jun 19 05:48:07 EDT 2000
Rich,
A new tunneling specific H.225.0 ReleaseCompleteReason would be valuable to
be received at an ingress GWY from the egress GWY.
However, regarding SCN mapping rules of such a new ReleaseCompleteReason to
Cause IE, I do not like any of the proposed values:
* Cause 88 "incompatible destination" is not suitable.
* Cause 111 "Interworking, unspecified" would sound good. However, in
case of Annex M1, a QSIG PINX would interpret Cause 111 as "Protocol error,
unspecified" (this is what Cause 111 is defined in QSIG).
* Cause 63 is not really suitable since tunneling is not a service or
option requested by the SCN (e.g. QSIG side).
Regards,
Karl
> -----Ursprüngliche Nachricht-----
> Von: Rich Bowen [SMTP:rkbowen at CISCO.COM]
> Gesendet am: Monday, June 19, 2000 00:22
> An: ITU-SG16 at mailbag.cps.intel.com
> Betreff: TD-54a/Osaka: New ReleaseCompleteReason for Annex M?
>
> Mr. Holm and others,
>
> In Osaka it was suggested during the discussion of TD-54a (Draft Annex
> M.2, ISUP tunneling) that a new ReleaseCompleteReason is needed to
> support tunnelling. The reason would indicate that the called endpoint
> is dropping the call because it rejects tunnelling and the
> tunnellingRequired flag was set in the Setup message.
>
> My notes indicate that I was to look into whether this was needed in
> H.225.0 v4. The existing reasons are:
>
> ReleaseCompleteReason ::= CHOICE
> {
> noBandwidth NULL, -- bandwidth taken
> away or ARQ denied
> gatekeeperResources NULL, -- exhausted
> unreachableDestination NULL, -- no transport path
> to the destination
> destinationRejection NULL, -- rejected at
> destination
> invalidRevision NULL,
> noPermission NULL, -- called party's
> gatekeeper rejects
> unreachableGatekeeper NULL, -- terminal cannot
> reach gatekeeper
> for ARQ
> gatewayResources NULL,
> badFormatAddress NULL,
> adaptiveBusy NULL, -- call is dropping
> due to LAN crowding
> inConf NULL, -- no address in
> AlternativeAddress
> undefinedReason NULL,
> ...,
> facilityCallDeflection NULL, -- call was deflected
> using a Facility
> message
> securityDenied NULL, -- incompatible
> security settings
> calledPartyNotRegistered NULL, -- used by gatekeeper
> when endpoint has
> -- preGrantedARQ to
> bypass ARQ/ACF
> callerNotRegistered NULL, -- used by gatekeeper
> when endpoint has
> -- preGrantedARQ to
> bypass ARQ/ACF
> newConnectionNeeded NULL, -- indicates that
> the Setup was not
> accepted on this
> -- connection, but
> that the Setup may
> be accepted on
> -- a new connection
> nonStandardReason NonStandardParameter,
> replaceWithConferenceInvite ConferenceIdentifier
> -- call dropped due
> to subsequent
> -- invitation to a
> conference
> -- (see H.323 8.4.3.8)
> }
>
> So I'll ask ... is a new reason needed?
>
> If so, Mr. Holm's draft contains an editor's note that suggests a reason
> code of "tunnelRejected". Should I incorporate that value as a
> ReleaseCompleteReason?
>
> If so, what Q.931/Q.850 mapping should I add to Table 5/H.225.0 for this
> reason? Some suggestions:
>
> 63 - Service or option not available, unspecified
> 88 - Incompatible destination
> 111 - Interworking, unspecified
>
> Thanks,
> Rich
> --------------------------------------------------------------------
> Richard K. Bowen Cisco Systems, Inc.
> VoIP Session Protocols Research Triangle Park, NC, USA
> --------------------------------------------------------------------
>
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