I have Avaya Workplace loaded on some Spectralink phones. When receiving calls the phones will not ring. The call shows up on the screen but if the app is closed the device will not ring. Been using it for a couple months and all of a sudden all the phones started doing this. I've checked every setting on the device and everything is set to ring, but when using the volume keys on the side of the phone it keeps turning the ringer all the way down. When you turn it up it won't stay that way. Once the screen is closed and your try to make a call to the phone it turns the ringer volume all the way back down.