Question about Gigaset CL660HX handset (CH version)

The Gigaset CL660HX (CH version) handset can be used with a compatible DECT base station. In order to be compatible with a modem such as Sunrise's Connect Box 3, it is necessary to use a DECT base station that supports connection to this type of modem. For example, the Gigaset Box 100 can be connected directly to Sunrise Connect Box 3, and then you can connect the CL660HX via DECT. Make sure that the base station you choose is compatible with the CL660HX and the modem you have.