Re: RMX4000 to Lync 2010 integ - Adding federation
Yes - the RMX will interrogate the Lync Front End server that has been configured for any Lync Edge servers. The RMX will then communicate directly to the Edge server(s) like you hav indicated. Yes - you have to open the ports from the edge to the RMX, bi-directional. For some customers, you have to make sure there is a route from the edge to the RMX as well.
You can search these forums or Google to find the list of ports.