We just bought a M200 (base) and M15 (phone). Seems normal (without RTSP) calling is working both directions.
But when RTSP and TLS is enabled I cannot hear the other party talking, they can hear me though. When the other party calls me, we can hear both parties.
We have like 20-25 snom desk (good old D760) phones which don't have these problems and work perfectly with RTSP!
Could anyone point me to a possible direction?
I have converted this topic to a support ticket.