To add a new prefix, follow the same procedure as you use to add a new area code. The one exception is to use a shorter dial string (such as 2223333, where 222 is the old prefix,) and a dial type of hnpa.

If you do not need to use the number 1 for area code calls, omit the1in Step 1, Step 4, and Step 6 in the previous procedure. Also, type 10 instead of 11 in the Total Min and the Total Max fields in Step 7.

To see if the new area code or prefix number is set up as a toll call, type display toll n, where n is the prefix that you want to review. Some users might be disallowed to dial toll call numbers.