If you have Digital Voice or VOIP (Voice Over Internet Protocol), your phone service provider should be sending you a phone adapter.
Panasonic Digital Cordless Landline Telephone - Twin Set, White KX-TGK220E
Panasonic KX-TGU430EB Digital Cordless Landline Phone with Answering Machine, Ba
Panasonic KX-TGK220E X2 Cordless Landline Phones Extra Charging Base Power Cable
Panasonic KX-TGJ322EB Landline Phone Cordless, House Phones, Nuisance Call Block
Panasonic KX-TGC464 3x Digital Cordless Landline Phone Answering System
