I just moved from France to Germany and I do not speak German yet. I am a bit lost with KabelDeutschland installation and need help.
I have a Fritz!box 7270 v.2 installed in my home. I was wondering how to upgrade to LAN 1 Gigabit. A neighbour is selling his used (Gebraucht) Fritz!box 7390 which has the Gigabit LAN ports.
The first question is: May I purchase this used 7390 and install it in my home or I need to purchase it directly with KabelDeutschland?
The second question is: are there alternative cheaper telephones to the KD FritzPhone MT-F so I can connect via DECT to the Fritz!box? Or only the MT-F will work with the 7270-7390 Fritz!box models?
The last question is: is there any way to integrate Skype into Fritz!box 7270 or 7390?
I work from home and I really need all those features working well and fast.
Thank you in advance for your advice!

Margrave