Modern Up-To-Date Call Blocker New for 2023. Compliant with FCC STIR/SHAKEN Varified calls with [V] from your phone company. Dual Block Buttons to Block a Name or Number Displayed. | Works with DSL, FIOS, Cable Modems or Digital Services from VoIP Telcos and Ooma, Vonage, Magic Jack etc. | Large Back-Lighted Display, Virtual Unlimited Blocked Numbers with Memory Management, Automatic Name Blocking of SPAM?, V+ Numbers and Trillions of other Fake Names. | Calls Ring Through like Normal with repeated Caller ID to All Connected Phones. Blocks SPAM, Out Of Area, Private, Anonymous callers by default. First Ring Suppression - Your Phone Won't Ring on Blocked Calls. | Caller ID Name and Number service is required for this model to work automatically.