First, I found this fairly interesting...
For our productions the SM is in the booth sitting next to the light board operator. She is on the intercom with the sound board, back stage, and pit orchestra, but since most of her cues are to the the light board (200+) in a show we do not want a communication problem there. The person back is responsible for informing the SM when thigns are ready backstage, and also relaying cues from the SM to back stage staff.
ALso for us the SM has to understand music since many of our cues are based on the score.
For our productions the SM is in the booth sitting next to the light board operator. She is on the intercom with the sound board, back stage, and pit orchestra, but since most of her cues are to the the light board (200+) in a show we do not want a communication problem there. The person back is responsible for informing the SM when thigns are ready backstage, and also relaying cues from the SM to back stage staff.
ALso for us the SM has to understand music since many of our cues are based on the score.