Hello,i have a new installation of UC540 with 13 Phones (12x SPA509G,1x SPA525G2).Installed is Softwarepack 8.2.0 , Firmware for the phones i can install 7-4-8 or 7-4-9c.11 x SPA509G have the German dial tone (this is good)On one SPA509G and the SPA5...