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- Newsgroups: alt.privacy
- Path: sparky!uunet!usc!news.service.uci.edu!ucivax!ucla-cs!geoff
- From: geoff@ficus.cs.ucla.edu (Geoffrey Kuenning)
- Subject: Re: Op-ed piece on telephone Caller ID
- Message-ID: <1993Jan22.192925.27032@cs.ucla.edu>
- Sender: usenet@cs.ucla.edu (Mr Usenet)
- Nntp-Posting-Host: ogmore.cs.ucla.edu
- Organization: UCLA, Computer Science Department
- References: <1jo0u5INN35a@usenet.INS.CWRU.Edu>
- Date: Fri, 22 Jan 93 19:29:25 GMT
- Lines: 35
-
- In article <1jo0u5INN35a@usenet.INS.CWRU.Edu> cs737@cleveland.Freenet.Edu (John B. Baron) writes:
-
- > What is ANI?
-
- Automatic Number Identification. It's Caller-ID for 800 lines, I think.
- It was put in place some years ago, without public review.
-
- > Did you *specifically request* that your *first* number be published?
- > The way I remember, one has to pay *extra* to have a number *unlisted*,
- > whether it is your first line of your tenth.
-
- I think there are two types: unlisted and unpublished. By default (at
- least where I live), extra lines are unpublished free of charge, but
- unlisted costs extra. The difference is that unpublished numbers
- aren't in the basic directory everyone gets but are available in such
- things as street-address directories sold to businesses. Unlisted
- numbers are more secret, and don't appear anywhere. (BTW, I just
- called information, and they only have my published number. I
- specifically asked for extra lines, and they said they only had the
- first.)
-
- > Do you mean to say that telemarketers won't just dial in sequence every
- > number with a given prefix?
-
- Sequential dialing is illegal in many places, perhaps all (I don't
- remember if there's a Federal law) and I've read that phone companies
- have software in place to detect it. This was put in place after some
- idiot telemarketer tied up important emergency lines with sequential
- dialing. Of course it's not hard to keep a bitmap of what you've
- called and dial randomly. But I think most telemarketers use a
- street-address directory, because I've had the experience of having
- several (non-sequentially-numbered) phones ring in sequence with the
- same junk phone call.
- --
- Geoff Kuenning geoff@maui.cs.ucla.edu geoff@ITcorp.com
-