One for all: The CL660HX universal handset is suitable for all common Internet routers, e.g. for the FRITZ!Box, the Telekom Speedport and many other models. You thus automatically use state-of-the-art Internet telephony and with the CL660HX you benefit from natural sounding audio quality in HD Voice. In addition you have numerous convenience functions at your disposal: a router-internal answering machine, access to the router's telephone book as well as lists of incoming, outgoing and missed calls.

You can easily avoid unwanted calls in general or specifically for selected numbers with the time-controlled call silencing function. Mute your CL660HX, for example, when your baby, your children or you are sleeping and don't want to be disturbed. Calls are still shown on the display, but the ring tone is switched off. With the "Anonymous call suppression" function you can reject or mute calls without a CLIP number. And with the blacklist function you can block up to 15 telephone numbers for incoming calls.