When I receive a call, the phone attached to the CPR Call Blocker rings, but my extension phones don't ring.
The CPR Call Blocker is designed to protect all the phones plugged into it from nuisance calls. If you have additional phones plugged into extension sockets, these will not ring if CPR Call Blocker has intercepted the call. If you wish to continue using several phones around the house, we would recommend using a DECT cordless phone system with multiple handsets (also known as a Digital Enhanced Cordless Telephone setup).
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