Now you can see trace the last incoming call, recording the number at the phone company.

When you get a threatening or obscene call, hang up.

  Dial *57 (rotary dial 1157).

  Listen for a confirmation announcement that call
  has been traced.

Hang up. The number you traced will be recorded at the phone company. If you decide to follow up on the matter, contact the proper authorities.
(Usually, your local Sheriff's office.)

Dial your Personal Identification Number (PIN.)

  Listen for the special dial tone.
  You are now ready to change your Call Forward.

Note:

• Call Trace must be used immediately after you hang up on the call you want traced. If you get another call, or hear a Call Waiting tone before activating, you will trace the wrong call.
• Call trace per activation: $5.00