We moved over to BT late July, and over the past week or two I have had complaints from users saying that when they try and make or receive a call, it will sometimes be silent like you can't hear them. Then, if you call them back or they call you back, you can hear them fine.
This is causing massive disruption in phone calls and we're not sure what could be causing it? It's not an end user issue as it is happening to myself too where I have made a test call from my personal mobile and no sound can be heard from either device.
Thanks.
