Caller ID Blocking

Prevents your number from being displayed on the called party’s Caller ID unit. This feature must be added to your line by ASTAC.



If you make a call and receive a fast busy signal, that party may have anonymous call rejection. Hang up and follow the instructions below.

Unblocking Your Number For One Call
*For Use on a Number Blocked Per Line*

1. Lift the receiver and listen for dial tone.
2. Press *67. You will hear a secondary dial tone.
3. Dial the phone number you are calling and your number will be displayed.
4. Your number will be blocked on your next outgoing call.


Caller ID Blocking will resume after you complete the call.




Samsung Galaxy S8 & S8+