Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!casbah.acns.nwu.edu!nucsrl!telecom-request From: collins@epsl.umd.edu (Bernard F. Collins) Newsgroups: comp.dcom.telecom Subject: Re: How do Businesses Get ANI? And a 911 (711) Story Message-ID: Date: 22 Feb 91 15:29:48 GMT Sender: news@casbah.acns.nwu.edu Organization: University of Maryland at College Park Lines: 36 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 149, Message 9 of 10 Originator: telecom@delta.eecs.nwu.edu In article SKASS@drew.bitnet (Steve Kass) writes: > [Moderator's Note: They get inter-LATA ANI for the same reason I get > it: They have an 800 number. When you are paying for the calls you get > told who you are paying for. If you accept a collect call, the > operator will tell you what number is calling also, if you ask. PAT] Interesting. I tried the ANI demo 800 number after I had blocked Caller ID for my call using *67 which C&P just implemented. No change. They ID'd my number just the same. Are normal LD calls ID'able outside of Maryland when I use *67? Skip Collins, (301)792-6243, collins@wam.umd.edu [Moderator's Note: It is not that calls are ID'able outside of Maryland, but rather, that you misunderstand what *67 will and will not accomplish. Under the assumption that a call is otherwise ID'able -- that the serving CO knows your number and is able to pass it along one way or another to the other end -- admittedly a big assumption until inter-LATA transfer of this information is universal -- then what *67 (or whatever your blocking code is) does is instructs the serving CO thus: "If the recipient of the call subscribes to Caller*ID then do not pass this information to him." Period. *67 does not permit you to avoid passing your number to the CO itself, to an operator handling your call or to the billing equipment. Although both ANI and Caller*ID deliver your number to the recipient of the call, they are technically different functions. *67 only addresses the Caller*ID aspect of it. The act of passing your number to the recipient of an 800 call is actually ANI, not Caller*ID. ANI is not without it's flaws: It passes the billing number sometimes, an otherwise irrelevant DID trunk number at other times, etc. But it is almost 100 percent universal throughout the USA. Caller*ID is not. PAT]