Say No More To Rob calls, Political Calls, Scam Calls, Unwanted Calls, Nuisance Calls, Telemarketing Calls: Block All At The Touch Of A Button! The newest CPR V2000 Call Blocker features a 3 Inch caller display screen, large "Block Now" button, 3500 number capacity and has the ability to block unwanted callers from Cordless DECT extension handsets by pressing #2. V2000 Main Features: Easy To Use Controls: With CPR Call Blocker's easy to use control buttons you can view the callers number on its large 3 Inch display and view the blocked number list as well as see how many times that Blocked number has tried to recall. If required blocked numbers can be easily removed from the block list using the delete button (See Images above). Built in Number List: The CPR Call Blocker is pre-programmed with more than 2000 numbers which are 'deemed' as known nuisance callers. Companies which are selling by phone, using overseas call centers and automated sales lists are all pre-programmed which will minimize the sales calls you receive almost immediately. Block Now Function: The ‘Block Now’ button is located on the top of the unit. At the touch of a button the unwanted caller’s number is logged into the unit’s memory, the call will hang up and the number blocked permanently. This feature allows you to block up to 1500 unwanted callers as they are calling you. #2 Blocking Function: Block a number by entering #2 on any DECT handset connected to the telephone base. Manual Entry: Manually enter or remove numbers to/from the Blocking list Compatibility: Compatible will all major US line providers including AT & T, Comcast, Ooma, Verizon, Century Link, Frontier etc. CALLER ID SERVICES FROM YOUR NETWORK PROVIDER IS REQUIRED FOR THIS PRODUCT TO WORK.