lemson@ux1.cso.uiuc.edu (David Lemson) (02/10/91)
penguin@pro-igloo.cts.com (Mark Steiger) writes: > A friend of mine said that with a touch-tone phone and his "secret > code" you could eliminate any records of you calling the 800 number. > He said, you dial the number, wait a second, then dial this number. > Your phone number won't show up on their bill (if they have that > service). This sounds like an "extender" in phreaker-ese. In order to mask your phone number, you dial into a "special" dial-in line of a PBX system, dial a special code (sometimes), and then get a dial tone. Now, you're on an outgoing line from the PBX as though you were physically located on the premises of the PBX. Sometimes, you can make LD calls this way and have it billed to the company owning the PBX, sometimes (often, nowadays) LD calls are blocked and the only use for this is masking your own number to SS7. The ANI at the 800 center will show a number allocated to the company's PBX instead of your own. Obviously, illegal and immoral. (Unless you happen to have the permission of the company owning the PBX, or its your own :-) I read somewhere (probably TELECOM Digest) about a 900 service where you dial the 900 then get a dial tone, dial another number, and get connected to whomever you want. The final party does not get your phone number through ANI, and the intermediate company gets some money charged to you as the 900 call. Another way to do this, without the phreaking element. David Lemson U of Illinois Computing Services Student Consultant Internet : lemson@ux1.cso.uiuc.edu University of Illinois, Urbana [Moderator's Note: Does anyone remember those two 900 numbers? I went to look for the little plastic card I recieved and I can't find it. PAT]
john@zygot.ati.com (John Higdon) (02/10/91)
Mark Steiger <penguin@pro-igloo.cts.com> writes: > He said, you dial the number, wait a second, then dial this number. > Your phone number won't show up on their bill (if they have that > service). You are being put on, big time. When you dial any number, the switch you are dialing into is programed to "pre-translate" or expect a certain number of digits based on the first digits you dial. If you dial "1-800" the switch will expect seven more digits and then becomes deaf to any more. There are no secret back doors here. This reminds me of when I was a kid and had other kids in school claim to have "secret numbers" that would do strange and wonderful things. Now, as then, what you describe is a fantasy. John Higdon | P. O. Box 7648 | +1 408 723 1395 john@zygot.ati.com | San Jose, CA 95150 | M o o ! [Moderator's Note: Do you think he might have been referring to one of those schemes where you call an 800 number; give the switch some 2600 tone -- ergo it more or less forgets about you; then you are left out there free to call where you want? I am being purposefully vague, but you know the idea. PAT]
forrette@cory.berkeley.edu (Steve Forrette) (02/10/91)
I believe one of the numbers was 1-900-STOPPER. [Moderator's Note: I found the little card they sent me. The above is correct. For international calls the number is 1-900 RUN WELL. The fee is $2 per minute on domestic and $5 per minute on international calls. Dial the above numbers; when you hear new dial tone dial the number you are trying to reach. PAT]
dave@westmark.westmark.com (Dave Levenson) (02/11/91)
In article <74381@bu.edu.bu.edu>, john@zygot.ati.com (John Higdon) writes: In reply to what > Mark Steiger <penguin@pro-igloo.cts.com> writes: > You are being put on, big time. When you dial any number, the switch > you are dialing into is programed to "pre-translate" or expect a > certain number of digits based on the first digits you dial. If you > dial "1-800" the switch will expect seven more digits and then becomes > deaf to any more. There are no secret back doors here. Some of MCS's 800 service subscribers receive ANI from MCI in the form of a string of DTMF immediately after they answer, and before the voice channel is cut through. If the called party's CPE is stupid enough, it may be possible to send _it_ some extra DTMF digits after the voice channel is cust through, and fool it. At best, however, this would only work with those MCI customers who use brain-damaged ANI receiving systems. Dave Levenson Internet: dave@westmark.com Westmark, Inc. UUCP: {uunet | rutgers | att}!westmark!dave Warren, NJ, USA AT&T Mail: !westmark!dave Voice: 908 647 0900 Fax: 908 647 6857
jeffj@uunet.uu.net (Jeff Jonas) (02/15/91)
>I read somewhere (probably TELECOM Digest) about a 900 service where >you dial the 900 then get a dial tone, dial another number, and get >connected to whomever you want. The final party does not get your >phone number through ANI, and the intermediate company gets some money >charged to you as the 900 call. My phone list shows +1 900 STOPPER as the number. I do not recall the fees, but it was charged per minute as well as an initial charge. Jeffrey Jonas jeffj@synsys.uucp synsys!jeffj@uunet.uu.net [Moderator's Note: $2 per minute on domestic calls; $5 per minute on international calls. Of course the catch they are not telling you is that there is no such thing as caller ID on international calls *yet* nor across LATAs, etc. They'd like you to think their service is really valuable, when in fact for the indefinite future there is very little to be blocked. Try them in a couple years when it will be worth perhaps a little more. PAT]