Hello Miri,
agreed that the textual description might be too short.
"Detection of inactivity" was a rather wide topic back in 2004/05, - we got discussions on .14 extension proposals, .40 was not yet on the table, ServiceChange scenarios and similar stuff. That's why explicit applicability statements were finally included in .36.
H.248.36 defines a detection logic:
IF condition C1 is fullfilled THEN event thb notification.
with just one condition C1 = "expiration of thb"
Now, non-applicability means that there is neither an additional condition C2 nor an impact on C1 by the use cases listed in I.2/H.248.36.
In particular of I.2 (4): ServiceState value equals to OoS does not impact the condition.
The text "(to be checked)" was perhaps missed to be deleted during the final review.
Regards,
albrecht
> -----Original Message-----
> From: Miri Epstein [mailto:mepstein at juniper.net]
> Sent: Donnerstag, 29. November 2007 12:10
> To: megaco at ietf.org
> Subject: [Megaco] H.248.36 - Hanging Termination Detection Package
>
> Hi,
>
> The H.248.36 (09/2005) has the following text (below) about
> Non-applicability (Appendix I, page 4).
> The question is about 4) below:
> What is to be checked?
> Should the notify of a detected hanging termination be issued
> when the termination is "out-of-service"?
>
> Thanks,
> Miri
> --------------
> I.2 Non-applicability
> This package is not applicable (or not intended) in the
> following situations (this list is not exhaustive):
> 1) Media Inactivity Detection.
> 2) Idle Bearer Detection.
> 3) Emergency Standalone Mode.
> 4) Termination is in state "out-of-service" (according
> ServiceState property in TerminationState descriptor) (to be checked).
> 5) Re-synchronization after (long) losses of MGC-MG
> interconnection, or cold reboots of
> H.248 systems (this is tackled rather by service change and
> auditing procedures).
> NOTE - "Long" here in the sense of data inconsistency between
> MGC and MG level.
> 6) Addressing potential issues related to bulk auditing.
> 7) Different or dedicated types of auditing for "detection of
> hanging resources".
> 8) Detection capability of hanging H.248 Terminations on MG level.
>
>
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