According to Sunrise, I should be able to connect this Fritzbox, which is why I bought it. But the connection on the Sunrise cable is too big for the Fritzbox, what kind of cable with what kind of connection do I need to get? According to Sunrise, I should simply be able to connect the box and it should work. I asked if I needed access data and was told no. Now I need the right plug for the cable. Any info on that please?