SUSTAINABLE PACKAGING: As part of Panasonic’s commitment to reduce its environmental impact this product comes with digital operating instructions via a QR code to encourage customers to re-use their existing one. Panasonic phones are digital landline ready. After your landline service moves to digital voice (VOIP), the old telephone sockets in your home will no longer work. Please connect the telephone cord to the internet router according to your internet provider's instructions. Nuisance Call Block - Block unwanted calls by registering up to 1000 nuisance numbers, such as telemarketers. Also allows you to block up 1000 specified numbers. Hearing Aid Compatible - HAC Support. Optimised to work with your hearing aid. Large dial, illuminated keypad and large white backlit LCD - Enhanced clearer buttons for ease of use.