My firm works in a building shared with another similar, but quite separate firm. We are about to share one single resource - a meeting room.
Both firms are running MS Exchange and using the Outlook calendar for resource booking - but with completely separate Exchange instances on different networks. We are not interested in sharing the complete Active Directory, but at the same time we need some way to handle booking of this one meeting room.
Does anybody know a way to make this single resource available for consistent booking to both firms - using Exchange?
If not - does anybody have experience with other IT solutions for this or similar challenges?