The Marconi Room was the place where wireless operators Jack Phillips and Harold Bride held communication with ships and shore over a Marconi transmitter. Communication over the wireless worked using 'dots and dashes'. For example, 'S' is '...' and 'O' is '---'. When put together, you get the distress signal SOS sent during the sinking - '...___....' .When the purser brought messages from passengers to send forward, it was their job to send them to shore. Between those private messages, the operators also received messages from other ships, mostly iceberg warnings.