PhoneBOX 3.3.0.61

FIX - When a call is displayed on a line in a grey state, ie it is used on an extension that isn’t on your device layout, it is possible to drop the line.

FIX - Avaya custom button presses not being received since Avaya IP500 firmware v6 upwards.

FIX - PB3 server not sending line state updates when closing / opening services.