Q:

What is a Carrier Access Code?

A:

A Carrier Access Code, or CAC, is a seven-digit code that allows callers to reach a specific carrier from any telephone. These codes are sometimes used to dial around an interexchange carrier and obtain better rates. All carrier access codes start with 101 followed by the carrier identification code.

Carrier identification codes are defined by the North American Numbering Plan Administrator and are used to identify, bill and route telecommunications traffic. A list of all available carrier identification codes is available online. U.S. mobile carriers are not required to support carrier access codes, and dialing one from a cell phone may not be possible.


Is this answer helpful?

Similar Questions

  • Q:

    How do you add money to your cell phone to allow someone in jail to call you?

    A:

    To receive a call on a cell phone from someone in jail requires arranging for a special phone service that handles the charges, since inmates can only make prepaid calls contracted with a specific carrier, or collect calls, which cell phones don't accept. The first step is opening an account with one of the special carriers. There are various carriers that service jails in different parts of the country.

    Full Answer >
    Filed Under:
  • Q:

    Why is the telephone so important?

    A:

    The telephone is an important invention that expanded and simplified communication. This invention sped and increased global communication, increasing the capacity for real-time interaction at a distance. The telephone also changed how people communicate with each other on a daily basis.

    Full Answer >
    Filed Under:
  • Q:

    How does the telephone work?

    A:

    For a phone to function properly, a duplex coil and frequency generator/touch-tone keypad are needed. With a landline phone, two copper wires run from a box at the road to a box in the house. According to How Stuff Works, the way telephones work has not changed in nearly a century. In the simplest telephones, there are only three small parts: a hook switch, a speaker and a microphone.

    Full Answer >
    Filed Under:
  • Q:

    What is the purpose of the telephone?

    A:

    The purpose of the telephone is to audibly communicate with other people who are far away instantly and efficiently. Before the telephone, long distance communication was done with telegraph machines which were less efficient and took longer to get messages across since only dots and dashes could be communicated.

    Full Answer >
    Filed Under:

Explore