I bought the Fritzfon C6 to use it as a reliable DECT device on a DECT station from another manufacturer (since, although I have the Fritz!Box 7590, I cannot use it for telephony, as it does not work with Forthnet - NOVA). The registration was done correctly on an existing DECT station Panasonic KX-TGK210 and I can make calls but not receive them! The same result occurred when I tried two other DECT stations (Panasonic KX-TG6811 and Panasonic KX-TGD310). I contacted AVM explaining the problem, but after expressing their regret for the call reception failure, they referred me to the article "FRITZ!Fon does not ring when you receive a call" in their knowledge base, which of course does not provide any answer to the problem. Finally, I dug up an old cordless phone PHILIPS CD140 and managed to make the Fritzfon work with it. I wonder, as a serious company with so many reliable products, couldn't AVM warn about the inability of Fritzfon to work with widely used DECT stations from other manufacturers, or at least investigate the reasons for this inability? It's a shame, because otherwise the Fritzfon C6 is a beautiful phone with sturdy construction.

Regarding its battery: it is advertised for a standby time of 288 hrs but barely reaches 190 hrs

Flawless device with many functions such as Do not disturb, Alarm, Block phone number, Block range e.g. 2114177xxx, Block only from hidden numbers, Block outgoing calls, etc. Common phone directories between devices, call recording with a button while talking, which saves it to the answering machine and sends it instantly via email in .wav format. You can control the wifi and, for example, open the guest_wifi from there without going to an app on your mobile. It plays radio, podcasts, and acts as a remote control for the media player. The list goes on.

Of course, for all these, it is necessary to have the same company's DECT modem/router, such as the 7590. (If you are with Cosmote, you buy it immediately because it automatically receives internet and telephone services, and you can throw away the Speedport).

Its only negative, which I believe they will change (it receives updates regularly), is that it does not support Unicode, meaning Greek in the phone directory. This means that I have written the names in Greekglish.

P.S. It connects directly to the 7590, so you no longer need a telephone cable.