Desktop Charger There are two desktop chargers available, one Basic charger that will only charge the cordless telephone, and one Advanced Charger with advanced functionality to download new software and synchronize parameters. The cordless telephone is fully operational while placed in the charger. The Basic Charger is delivered with a plug-in power supply and is connected into an ordinary wall socket. The Advanced Charger is delivered with a power supply adapter. The adapter is connected with a power cord to the wall socket and the Charger itself is supplied from the adapter.