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- Path: sparky!uunet!paladin.american.edu!gatech!darwin.sura.net!spool.mu.edu!telecom-request
- Date: Thu, 7 Jan 1993 17:42:11 GMT
- From: schimmel@gandalf.ca (Fred Schimmel)
- Newsgroups: comp.dcom.telecom
- Subject: Re: Why Does Phone Bell 'Ping' on a Regular Basis?
- Message-ID: <telecom13.15.8@eecs.nwu.edu>
- Organization: Gandalf Data Ltd.
- 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 15, Message 8 of 10
- Lines: 21
-
- It used to be that there was something called a line integrity test
- (LIT) that occured in the interval just before the ring cycle began.
- The circuit was re-arranged to test the line between the CO and the
- phone. This is one reason why Customer Premises Equipment (CPE) needs
- to identify its Ringer Equivalence Number (REN) because the test had
- differing results depending on the number of ringers on the line.
- Perhaps you added or removed some phones, modems, answering machines,
- etc. Perhaps your local CO routinely at 10:15PM does a maintenance
- check of all its lines, and this is when the ping occurs. Try calling
- and asking for a test supervisor to see if they do something like
- this. Or count your equipment total REN and inform the phone company.
- It could just be a misprogrammed test, or an indicator that the line
- is faulty.
-
- Perhaps someone else remembers more about LIT. I believe this was a #5
- crossbar feature.
-
-
- Fred Schimmel Gandalf Data Ltd. schimmel@gandalf.ca
-
-