Elegant Design. Boasting a unique shape, the KX-TGK220EM is as much a design statement as it is an excellent cordless phone. The base doubles up as a charging cradle, which the handset slots neatly into with the aid of a small magnet.. Nuisance Call Blocking. If you are fed up of receiving endless nuisance calls, then the KX-TGK220 is the ideal cordless phone. With the ability to block all anonymous calls, it can massively reduce the number of nuisance calls you receive from the moment you start using it. WhatÄôs more, there is also the option of blocking individual numbers or prefixes- so if the same numbers keep calling, you can stop them from getting through.. Answer Machine. The Panasonic KX-TGK220 has a built-in answering machine with up to 30 minutes recording time. With clear sound, youÄôll never miss a message again, and thereÄôs also the option to record your own personalised greeting. When you have a new message, the blue LED on the exterior of the handset flashes to let y