PhonePeaceRS blocks and silences all unwanted Landline calls to protect you from scams and annoying ringing! PhonePeace RS has all the features of our 5 star rated PhonePeace System product. It allows you to determine which calls you want to receive-all others are sent to voicemail silently. PhonePeaceRS has exclusive ring stop technology that means no ringing for blocked calls. Other call block systems try to block known telemarketing numbers. These systems are not effective because scammers can call on millions of different numbers. What makes PhonePeaceRS unique is that you give it a list of friends, family, and important numbers you want to receive. These calls ring normally-all others are sent to voicemail automatically and sliently! No buttons to push. The unit holds 800 numbers for friends and family which are conveniently programmed using a keypad or a spreadsheet from a computer. So enjoy complete silence on you landline phone with PhonePeaceRS. Ideal for protecting the elderly from scammers and annoying ringing or for anyone who just wants a quiet phoneline. This product works with Voice over Internet Protocol (VoIP) phones but does not work with analog or POTS telephone system. If in doubt please contact us.