Hi Guys Has anyone else had reports of Fanvil X5 phones locking up on the latest 3CX 15.5 SP2, we have been in communication with Fanvil for well over a fortnight now with no signs of progress (multiple traces run). This mainly causes problems for busier clients e.g. call centres when phones are constantly ringing and in use. The Fanvil X5 will completely freeze (keybapd and blf keys un-responsive) and only a reboot will bring it back online. There is no pattern to this, phone can be idle, calling out or recieving a call.