160 DEAR HACKER

160 DEAR HACKER

Since CCIS has benefits for really high-volume trunks, you can try looking for long- distance trunks to Canada, or rural states. These probably won’t be phased in for

a long time, if at all. (Remember, very few companies just invest in new technology for new tech’s sake; even AT&T won’t be able to do this for long.)

Dear 2600: I’m a new subscriber and would like to contribute some interesting

information. First, there’s a computer at 8005387002 that accepts a ten-digit DTMF

sequence and speaks them back at you. The input must be ten digits with *, #, A, B, C, and D tones accepted but not pronounced, and is more forgiving than most COs as far as frequency tolerance goes. Tape recorded DTMF inputs will decode fine if your tape speed and audio levels are up to par.

I’m employed by the cellular telephone industry and would gladly write an article on cellular phreaking if there’s any interest. The article will have to be a bit on the technical side however, and the techniques outlined will require a knowledge of electronics and hexadecimal math and access to a PROM programmer.

Bernie S.

The number you gave belongs to a company that sells equipment that generates speech and is activated by touch tones. It will be a good tool for those who need to decode phone numbers. Radio Shack sells a chip that is called a touch tone decoder; maybe one of our electronically proficient readers can produce a sche- matic to make this chip work for us.

With regard to writing articles: please write about cellular phones, but write two articles. The first should be an overview of how cellular phones work, how calls are routed, and how we can call a cellular phone. Include some sample phone num- bers or perhaps a directory of numbers to call. Try to answer simple questions that people who have not had a chance to use cellular phones may ask.

TECHNOLOGY

Then you can tell us how we can phreak them. If it is technical, try to give some reference sources. Try to make it interesting so, even if we lack the education and resources to practice cellular phreaking, we would want to read it.

Dear 2600: This comes from a Pacific Bell bill insert: “A new prefix, 811, will soon be available for you to call your Pacific

Bell business office toll-free from any area served by us. All our busi- ness office numbers will be replaced by toll-free numbers with an 811 prefix.

“If your PacBell business office numbers changed to an 811 prefix, the new prefix and number will appear on your telephone bill.

“After this change, you only dial 811-XXXX from any PacBell area in the state to reach your local office toll-free. However, if you are calling from an area where 1+ dialing is required, you must continue to dial the 1 before dialing the seven-digit 811 number.

“Some of you who have specialized equipment could have a problem in dialing the 811 prefix. You may need to contact your vendor. Until equipment modification is made, you may continue dialing the old business office numbers available from 411.

“This change will save you the cost of a toll call to PacBell when a call is made to all non-local offices. (Today, calls to our BOs are normally toll-free from a customer’s home or business area.)”

Reader on the Pacific Something else which is popping up in many places is the ability to choose your

operators. Generally, dialing one “0” will get you your local operator, i.e., New York Telephone, New Jersey Bell. Dialing “00” will get you an AT&T operator. The local operators are used for making collect, third-party, and credit card calls to local areas whereas AT&T operators handle longer distances. We presume they both have the same capabilities, equipment-wise.