Here's how to enable Nomorobo on Cox:
- Login to your Cox Phone Tools.
- Click on Settings to expand options.
- Select the On button next to Simultaneous Ring.
Note: Unfortunately, simultaneous ring is only available in select markets and not available to all telephone customers at this time.
- Enter the phone number 602 598 5130 into the box and click Add.
- Click Save.
If you've done the above, and the test is still showing your line is unprotected, you will need to call Cox customer support at 1 (800) 234-3993
Tell them to manually reset and test the Simultaneous Ring feature. You can also try testing the feature with a cell phone to confirm it's working.