Account codes are used to prevent unauthorized persons from making long distance calls. This type of restriction is most commonly found in the business world, but individuals sometimes request it for residential accounts. If you're dialing from a line that requires a long distance account code (sometimes called a "call-around code"), you'll hear a voice prompt when you try to dial a long distance number. If you set this up on your own home phone line, you would have been given the call-around code at that time. Did you lose your code? You'll need to call customer service to get the code again. If you did not set it up, you can ask the account owner for the code. Follow the recorded instructions to enter the code, and your call should go through. Note that additional charges are applied when using a call-around code.