Caller identification, or caller ID, is a feature that allows a caller's phone number to be transmitted to the telephone equipment of the person being called. In most cases, if the caller's name is available, it is also transmitted. Callers who want to block their name and phone number when calling a landline phone can do so without incurring any charges on their phone bill. When you block your name and number, the call recipient may see “Unavailable” on their caller ID display.
Pick up your telephone and listen for the dial tone.
Dial *67 and listen for two quick beeps. The dial tone should return to normal following the two beeps.
Dial the number you wish to call.