Originally Posted by bfrye
As far as the first question, no you will not have to notify your provider. As long as you have a data plan on your BES-enabled blackberries your provider should not care.
Second question, yes, MDS will allow you to access your internal network via a VPN-like connection through your blackberries. You can even specify via IT Policies whether or not you want internal or external access allowed.
For what your asking I would venture to say it would suit your needs very well.
Then, from a technical point of view, when I start up say a BB SSH client that uses BES, how does it get from my wireless provider to my BES when I make the request.