Yes, you can manually add a list of telephone
numbers to the Blacklist memory of your Blocker.
There are 3 ways of adding numbers to the BLACKLIST.
1) Wait for the unwanted call to ring, and press the "BLACKLIST" button (Recommended)
2) Follow step 5.0 in the manual at http://hqtelecom.com/TLock-Pro-CallBlocker-N2-UserManual.pdf
3) To add these numbers to the blacklist, follow these steps:
a) Connect a telephone to the PHONE port for your Blocker.
b) Dial a number you want to block using the dial-pad of the telephone connected to the PHONE port (you can hang up).
c) Now, press
OUT button to view the outbound calls.
Then use the scrolling Left/Right buttons to find the number you just
dialed. Press the “Blacklist” button to
add it to the backlist memory. Repeat these steps for each number you want to