The commentary system used by Broadcast Services International (BSI) and Commentary Systems International (CSI) was built by Lance Design. The requirements were specified by Bill Durham of Commentary Systems International with assistance from Joe Wasser.
Currently BSI has three 6 positions systems that can be ganged together for a total of 18 positions. CSI is capable of 24 positions in various configurations. All systems can be combined for a total of 42 positions at a single large event or split up to cover multiple venues as they did together at the 2015 Pan American Games in Toronto.
Regular clients for these systems include the NBA Finals and All Star Game, MLB World Series and All Star Game, NFL Super Bowl, The Masters and US Open golf championships.