Cox Digital Phone service features several free calling features, including selective call rejection which allows you to program up to 31 phone numbers into the call block system. Callers having blocked numbers will hear a recorded message that informs them you are not currently accepting calls. You can add a specific phone number you want to block at any time directly from any telephone connected to your Cox Digital Phone service. Writer Bio

How to Block a Phone Number on Cox Communications  5 Steps  - 62