How to connect different server on RTC

I suggest you contact Microsoft directly. Ask for the licensing department, state your full name and address and the company you work for. I'm sure they'll be glad to help you out.

Are you asking Microsoft to remove/rename menu items in MS Word or Excel too? Or in Windows? Do you understand how software is developed and maintained? Do you think that you are giving Microsoft so much incomme, that they will create own version just for you? ;-)

I guess we'll leave this one unanswered...

But of course,this is licensing issue more than technical. Removing brand is not the thing you want to do... ;-)