Hi,
I installed a QX today and i am having a problem with dialing both extensions as well as though the ISDN.
you can dial an extension 10 times and it is successful 4 out of 10 times, when it is unsuccessful, there is nothing under call history and sounds like you are in a static tunnel, on the screen, it has the number with arrows... Same happens when dialing through ISDN.
Phones we are using are Yealink T20P as well as T26P
Call routing has been checked and correct...