PROBLEM WITH RAINBOW

Good evening,
a colleague has a little problem with Rainbow.
Problem 1: if I call an extension assigned to a Rainbow user from an oxo extension, I don't have call tone (the free and busy tone) the same thing if I call from a Rainbow user to a Rainbow user. On the other hand, if I call an extension from a Rainbow user or generate a regular external call from a Rainbow user.
Problem 2: we have connected Teams , the connection seems to have happened but it doesn't allow us to call and receive extra calls, a red line of problem appears ( see attachment ).

In attachment In your answer, because I can't now, i will insert a track taken from the oxo if needed.

The colleague answers to the email gabriele.sarti@alascom.it.
Keep also me in copy for knowledge.

rainbow-webrtc-gateway-1.74.16-279
oxo release R040_020_002

THANKS.

ALESSIO