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From: dave%westmark@uunet.uu.net (Dave Levenson)
Newsgroups: comp.dcom.telecom
Subject: Re: 800 ANI - Is the Whole Number Neccessary?
Message-ID: <10696@accuvax.nwu.edu>
Date: 10 Aug 90 17:40:54 GMT
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In article <10640@accuvax.nwu.edu>, SDRY@vax5.cit.cornell.edu (Sergio
Gelato) writes:

> guess).  However, you should still be able to say "I never called
> anyone in exchange YYYY on that day", in the same way as you can tell
> a US telephone company "I never called (XXX)XXX-XXXX".

In the U.S. you can claim: "I never called anybody at (201) 234 5678.
They can look up the records for calls originated by the subscriber
whose number is (201) 234 5678 and see if they've ever called you.
That's known as "checking returns" and is routinely done in an attempt
to see if your claim is reasonable.  If they called you, it's less
likely that you never called them.  I guess in France, they would have
to check returns on several hundred numbers, depending upon how many
of the digits are omitted from the billing "detail" records. 


Dave Levenson		Voice: 908 647 0900 Fax: 908 647 6857
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