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From: mitel!spock!grayt@uunet.uu.net (Tom Gray)
Newsgroups: comp.dcom.telecom
Subject: Re: Advice on ANI Hardware Wanted
Message-ID: <14003@accuvax.nwu.edu>
Date: 24 Oct 90 12:25:18 GMT
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Reply-To: Tom Gray <mitel!smithd!grayt@uunet.uu.net>
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X-Telecom-Digest: Volume 10, Issue 761, Message 6 of 10


In article <13827@accuvax.nwu.edu> Heath Roberts <barefoot@hobbes.
ncsu.edu> writes:

>>> Any switch on the face of
>>> the planet can be adapted for ANI.

>>Then why haven't they? Why haven't they offer ANI service as
>>they have done with call-waiting, call-forwarding, and etc?

It is true any switch in North America can be converted to ANI.
Automatic Number identification is used for TELCO billing.  A toll
call is routed from the local exchange to the billing office (called
CAMA - Centralized Automatic Message Accounting?).  The CAMA offices
sends answer supervision to the local office whch pulses out the
calling number and some other information (ie coin call etc) to the
CAMA office. The CAMA office then routes the call and is rrsposible
for detecting answer supervision from the called partyt and billing
the call.

Older offices and certain party lines are not capable of providing
ANI. They use the ONI system (Operator Number identification) in which
one hears the familiar "Wich Number are you dialling please?"

More modern digital offices are dispensing with CAMA and ANI and are
using LAMA (Local AMA). In this case, the local office has a direct
connection to the digital network and can be interrogated remotely by
the TELCO's network management system for billing information.

ANI is not Calling PArty ID. It is a feature of TELCO billing It is
the means by which the TELCO generates caleed party information from
older offices (not necessarily digital offices).