You’ve set up your landline call blocker, but how can you be certain it’s doing its job? With nuisance and scam calls still on the rise across the UK, it’s important to test your device from time to time. Here’s how to check if your call blocker is working properly — and what to do if it isn’t.

Why Should You Test Your Call Blocker Regularly?
Testing your landline call blocker ensures that it’s still functioning as intended and providing complete protection. Over time, database updates, new scam numbers, or incorrect settings can reduce its effectiveness.
Here’s why testing is important:
- Verify installation: Confirms the device is correctly connected to your landline system.
- Check active blocking: Ensures nuisance numbers are being filtered out automatically.
- Confirm updates: Keeps your call blocker in sync with new scam databases.
- Spot technical issues early: Detects loose cables or misconfigured settings before problems grow.
- Maintain confidence: Gives peace of mind that your family is protected from scam and spam calls.
Summary: Regular testing confirms your call blocker is correctly connected, updated, and performing at its best.
How Can You Test Your Landline Call Blocker?
Testing a call blocker doesn’t require technical expertise — just a few simple steps to confirm its features are working as expected.
Try these easy checks:
-
Make a test call from another phone:
Use your mobile or a different landline to call your home phone. If your number isn’t on the allowed list, it should be blocked. -
Add your number to the blacklist:
Use the “Block Now” button or manual entry to add the number. Call again — the call should be rejected automatically. -
Whitelist a trusted contact:
Add a family member’s number to the whitelist and have them call. The call should come through as normal. -
Test anonymous call blocking:
Dial 141 before your number to hide it and call again — the call should not connect. -
Review call logs:
Many devices record blocked calls; check the log to confirm activity.
Summary: Simple test calls from different numbers confirm that your call blocker correctly blocks unwanted calls and allows trusted ones.
What Should You Do If Your Call Blocker Isn’t Working?
If your landline call blocker isn’t blocking as it should, there’s no need to worry — most issues can be resolved quickly.
Here’s what to check:
- Cable connections: Ensure the device is securely connected between your phone and wall socket.
- Settings and modes: Verify that blacklist, whitelist, and anonymous call blocking are switched on.
- Update the database: Some devices need manual updates to stay current with new scam lists.
- Perform a reset: A quick reset can clear software errors or outdated settings.
- Seek manufacturer support: If problems persist, contact the brand’s customer service for assistance.
Summary: Troubleshoot by checking connections, verifying settings, and updating your device to restore full blocking protection.

Conclusion
Testing your landline call blocker is quick, simple, and vital for ongoing protection. Regular tests ensure scams stay out and trusted calls get through without interruption.
Explore CPR Call Blocker today — the trusted choice for safeguarding vulnerable individuals in care environments.
FAQ
Q: How often should I check if my call blocker is working?
A: Test it every few months or after changing your phone service or equipment.
Q: Why are some nuisance calls still getting through?
A: Scammers often use new or spoofed numbers — updating your call blocker helps prevent this.
Q: Can I test it using my own phone?
A: Yes. Simply call from your mobile or use 141 to make an anonymous test call.
Q: Will a reset delete my blocked numbers?
A: In most models, yes — be sure to note down important settings before resetting.
