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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!telecom-request
- Date: Sat, 02 Jan 1993 21:19:40 -0700
- From: james@cs.ualberta.ca (James Borynec; AGT Researcher)
- Newsgroups: comp.dcom.telecom
- Subject: Re: All Circuits Are Busy Now ...
- Message-ID: <telecom13.2.2@eecs.nwu.edu>
- Organization: University of Alberta, Edmonton, Canada
- Sender: Telecom@eecs.nwu.edu
- Approved: Telecom@eecs.nwu.edu
- X-Submissions-To: telecom@eecs.nwu.edu
- X-Administrivia-To: telecom-request@eecs.nwu.edu
- X-Telecom-Digest: Volume 13, Issue 2, Message 2 of 12
- Lines: 26
-
- On 25 Dec 92 21:26:00 GMT, john@zygot.ati.com (John Higdon) said:
-
- > I would have thought that by now AT&T would have stopped its annoying
- > practice of drastically reducing its capacity on holidays. A number of
- > AT&T employees have told me that for reasons that are not very clear,
- > the company has traditionally blocked off a major amount of the
- > system's capacity on various holidays such as Christmas and Mother's
- > Day.
-
- Network managers, traditionally have two means of controlling
- high-volume traffic. They can either re-route or they can block.
- Re-routing is useful if the place they route it to has capacity to
- spare. Selective Blocking can actually RAISE the number of completed
- calls by stopping calls that would fail anyway before they chew up
- any more trunks.
-
- Under traditional signalling schemes, a call attempt will aquire
- available trunks until it either succeeds and is billed or fails and
- releases the trunks. In the second case, no money comes to the telco.
- The Telco (AT&T in this case) seeks to avoid the second case, in order
- to maximize revenue.
-
-
- j.b.
-
-