Joining meetings sent by external users.

Hi guys.

We have not been able to join s4b/lync meetings sent to us, using our Polycom solution.

Is this not supposed to be possible? All internal meetings works fine, join button is there and so on.

But whenever we receive a meeting from an external user, then it does not accept the meeting by itself, and even if I manually do that, then the "join" button is still missing, and it will ask for a meeting number. (which wont work.)

Is there anything we can do to be able to join meeting sent from external users?

Thanks!

We are using a Realpresence Group 310

Software version: 5.1.0-250527