In addition to the Auerswald system telephones Auerswald COMfortel 2500 system phone 800 Rn memory black I wanted a Gigaset connect SX810 ISDN cordless phone (4.57 cm (1.8 inch) graphical TFT color display, speakerphone, Bluetooth headset connection) steel gray on the system.
By means of plug and play, it worked great. Simply plug in - finished. Works seamlessly :-)