Rooms that I have seen that are well set up for handling both local and remote participants include multiple monitors for displaying the material as well as the video feeds from the remote participants, in-room microphones so that the remote people can hear you, cameras so that the remote people can see you (and whatever you might write on the whiteboard), speakers so that you can hear the remote people, etc....
Depending on the room size and shape, these kinds of things can take many forms. Many companies specialize in producing conference room setups that are oriented towards this model. Even old behemoths like Cisco have entries in this space, although they are very expensive.
What works for you may vary based on many criteria, but of course you have to start with the budget, and the timeframe on which the solution has to be delivered.
Depending on the room size and shape, these kinds of things can take many forms. Many companies specialize in producing conference room setups that are oriented towards this model. Even old behemoths like Cisco have entries in this space, although they are very expensive.
What works for you may vary based on many criteria, but of course you have to start with the budget, and the timeframe on which the solution has to be delivered.