From: Greg Tompkins <firstname.lastname@example.org>
Subject: ANI vs CALLER ID
Date: Sun Jun 4 20:27:55 1995
The other day, I called a company and requested information. The lady
said "I have your number as [my phone number] an ANI listing". How
did she do this? Is there a device that would let me do this to know
who is calling? How is this different than Caller ID?
Another question about ANI. I called 1-800-MY-ANI-IS with my cell phone
and it gave a totally different number than what my cell number is. I
tried to call the number that ANI gave me and it said "You have reached a
disconnected number." Why doesn't it give my regular number? I was
roaming once, and it gave me the number of the phone.
[TELECOM Digest Editor's Note: ANI and Caller-ID are quite similar but not
entirely the same. The end result is the same; the called party gets the
phone number of the caller. From residence phones, for all intents and
purposes the information via Caller-ID and/or ANI is one and the same.
When you call an 800 number, you *cannot* withhold your number from the
called party. The use of *67 is overridden by ANI delivery. Sometimes
ANI is delivered after the fact -- like once a month with the phone bill --
and it can also be delivered in realtime, just like Caller-ID on display
units. Most large companies get it in realtime as well as on their bill
Cellular phones seem to always deliver 'out of area' messages to Caller-
ID boxes. Where ANI is concerned, they always seem to deliver the number
of the outgoing trunk line on the cellular carrier's system rather than
the actual cellphone number itself. I don't know why. When I used my cell
phone to call my 800 number, the 800 ANI a month later on the bill showed
a number which when traced through the Ameritech Name and Address service
came back listed to something called the 'IBT Company' at a *suburban*
address (even though the cell phone was a 312 number). Further checking
into that address showed it was a telco central office building. Dialing
the number got the message that the number was not in service for incoming
calls. I don't know why they do things the way they do. PAT]
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