TO CANCEL CALL WAITING
If you are going to make an important call and do not want any interruptions, the Cancel Call Waiting feature allows you to "remove" Call Waiting for the duration of your call. Once you hang up, Call Waiting is automatically back in service!
INSTRUCTIONS:
To cancel Call Waiting, Press *70 on a touch calling phone, or dial 1170 on a rotary phone. Wait for dial tone. Dial the number you wish to call. Call Waiting has been temporarily suspended for the duration of the call and will automatically be restored when your call is completed.
If you subscribe to Three-Way Calling, you can cancel Call Waiting during a call: