Question about Gigaset CL660A (DE version)

To connect the telephone base to a router such as Swisscom's, it is generally necessary to use an RJ11 cable to connect the base to the router's telephone socket, if the telephone is designed for an analogue connection. However, DECT phones, such as certain Gigaset models, can be connected directly to a DECT router without the need for an RJ11 cable.

As far as batteries are concerned, they are generally charged by a charger supplied with the phone. However, I have no specific information on the CL660A model regarding the type of charger supplied. It is likely that the charger is included in the box, but it is advisable to check the contents of the packaging or the product documentation to confirm this.