Since my connection was switched to IP telephony had to get a new phone. So why not a FRITZ! Fon suits my FritzBox. Connection and setup were a breeze and really does not require any manual because everything is self-explanatory. This is with AVM actually getting top. The handset is very handy and light, has a fairly large display, backlit keypad and easy to read. Prima I find the possibility to assign the images contact numbers. So you can see immediately who is calling since. Absolutely top is the blocking of calls (telemarketing calls) over the Fritz box. So you can keep various annoying telemarketing calls from the neck. Some users complain about a low volume. For people no longer hear the OK as well be the reason applicable. To me they can see. Furthermore, there are complaints about poor sound quality (echo, noise, crackling, etc.). Well, that's probably a fundamental problem of IP telephony and is partly also the provider. For me, these problems have not occurred to date. To speak of HD quality I think, however, be exaggerated. The other gimmicks of this phone I do not review here. I use it only for calls and not listen to the radio or whatever else is there yet possible. I for my part am anyway very satisfied and would buy it again at any time.