ingenious device with small drawbacks

We bought the Fritz! Fon 7150 as a replacement for a Fritz! Box 7170 + analog phone, simply for the reason that then lying about less devices and cables.
After about 7 months now use I can say that the Fritz! Fon 7150 offers many advantages:

+ No clutter, just power cord and combined DSL / telephone cable are necessary to utilize the functionality
+ Very low power consumption, since all the components required for Internet and phone use are combined in one device
+ Chic design of the base station and the handset

! Even though I want to give a total of no means more to the Fritz Fon, there are also a few things to complain about:

- Unfortunately supplied the AVM Fritz! Fon rarely with firmware updates, the reason for this is beyond me, at 09:05:08 an update, however, after about a year hiatus by AVM finally appeared, which includes all current feature!
- In the 7 months use occurred when building a VoIP conversation several times complete crashes of Fritz Fons on, and then even several times in a row!

Despite the modest support through AVM I give the Fritz! Fon 7150 5 stars, especially because I have the hope that the sporadic crashes when building a VoIP conversation belong to the new update of the past.