Bit of a strange issue here.
Calls initiated from a T3 touch screen or iphone to the DS2 door station functions correctly, 2 way audio and video works with no issues.
However, initiating a call via the door station, will trigger all devices to ring, when answered, video works but audio can’t be heard on the door station, mobiles, or T3 screens.
hc800 and DS2 were restated but no joy. Any ideas? Thanks