Ok to Start I got an IPOffice 500 running 5.0.15 with 56xx phones off an extreme switch. The first problem is static and echo I have tried to mess with some of the setting in vcm and analogue setting, I can make the sound the static and echo worse but cant get it any better. Second speaker phone goes really quite and back to normal (sound levels) on a call. And finally round trip errors in system status on only one phone. Tested cable with fluke tested good. Any help would be great as this is starting to be a torn in my side