Hello Albrecht,

You have a good point about that the "superior function" could be something other than the "sum" it could in fact be the "average" and mostly dependent on statistic type. I think your proposal still leaves it open what to do with a termination level statistic. I would like to see at least a default behaviour like "sum", I also think that we should say that this may be modified by an individual statistic definition. That way if someone doesn't add text (eg. all the existing statistics) then a certain behaviour can be assumed.

Would the following text be agreeable: "The value of a Statistic at a Termination level is the result of a meaningful superior function (like for instance sum or average)of the values as if it had been placed on all the streams in the termination. Such a superior function is dependent of the particular statistic type. Unless specified otherwise in the package that defines a particular statistic, the default behaviour is a sum of the values."

Regards, Christian

Albrecht.Schwarz@alcatel.de wrote:

Hi Christian et al.,

I concur with Christian's proposals. I know I'm behind week 4, but when looking at the nt statistics, I'm again not sure whether the additions for item 8 are sufficient.

Current proposal: "The value of a Statistic at a Termination level is the sum of the values as if it had been placed on all the streams in the termination."

Discussion: The statistic on Termination level is superior concerning the Stream level statistics. Thus, there needs to be a "superior function" for the Termination statistic. Crucial: such a function is "statistic type" dependent. "sum" is an example for a "superior function", "average" another one (e.g., applicable for some time-based statistics like "delay" or "delay variation").

Generally there are two possibilities here: (1) Statistic was initially defined for "Streams", afterwards a meaningful "superior statistic" for "Terminations" is demanded.

or (2) Statistic was initially defined for "Terminations", afterwards an adaption for "Streams" is demanded.

The 2nd case seems to be straighforward, the first case is our issue here.

New proposal: "The value of a Statistic at a Termination level is the result of a meaningful superior function (like for instance sum or average)of the values as if it had been placed on all the streams in the termination. Such a superior function is dependent of the particular statistic type."

Comments? Regards

Albrecht

                  Christian Groves

                  <christian.groves@ER         To:      SG16

itu-sg16@external.cisco.com ICSSON.COM> cc: Kevin Boyle kboyle@nortel.com Subject: [SUSPECT ATTACHMENT] H.248.1 Editing Meeting Week 4 comments 17.06.2005 06:05

Hello Kevin, all,

Please find attached my comments for week 4 of the editing meeting. Rather than a marked up document its in the form of an IG update. I have attempted to capture items that have been discussed on the Megaco list or have been mentioned in Tispan. I'm not sure whether all the items fall into the realm of editorial only but none of the items add new functionality. I intend on presenting this DC (with any new raised issues) to the July meeting.

Of interest to the Week 4 ABNF are items 1,2 and 3.

Comments?

Regards, Christian

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