Path: utzoo!telecom-request Date: 12 Apr 91 12:06:48 GMT From: Jim Gottlieb Newsgroups: comp.dcom.telecom Subject: Re: Pacific Bell "Airport" Credit Phones Reply-To: Jim Gottlieb Message-ID: Organization: Info Connections, Chiyoda-ku, Tokyo, Japan Sender: Telecom@eecs.nwu.edu 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 287, Message 3 of 10 Lines: 20 STEVEF%WRQ@mcimail.com (Steve Forrette) writes: > If you use a calling card, the phone simply dials the number, waits > for the ka-bong, then sends the card number and PIN via DTMF. > But for the credit cards, it is even more silly. The phone dials a > seven digit number into some computer verification system somewhere. The phone that has always intrigued me is the AT&T Card Caller Plus. It handles credit card calls the way most handle calling card calls. It just dials 0+ and enters some form of your credit card number after the ka-bong. I have always meant to tap the line of one to see what it dials but have never gotten around to it. If I could figure out what it dials, then anyone could place a credit card call through AT&T simply by dialing 0+. I once tracked down the guy at AT&T who designed that phone, but he wouldn't tell me :-(.