RDS licensing non member servers

Hi Everybody,

I have a question concerning RDS licensing and configuring the RDSH server to use the licenses.

The client has an internal RDS environment inside the domain. This environment has its own licensing server. They have a separate RDSH server placed as standalone not within the domain (user connecting up to it are local users). The users connecting are external agents (the reason for which they placed it outside the domain).

1. How to license those users (external connectors)
2. When they can leverage from the already purchased RDS CALs sitting on the internal licensing server, can the non domain RDSH server be connected to the this licensing server?

I'm assuming for now we are talking about a 2008 R2 environment, but I still need to get this confirmed from the client.

Thanks for anyone that wants to help.

greetz,