The chief engineer had many phones. It’s my guess one connects to the pilot house and the other connects to the emergency steerage station that’s mid-deck.
The gauges on left of frame are the steam pressure indicators for the various steam-powered components around the ship, like the steering engine and windlass motors. Below the gauges are a case of tiny wooden parts drawers… note the ancient oiling can on the locker near the upper-right corner of the frame.
The elevator near the offices seemed a day’s work away from being operational
Bells are highly symbolic, being used from everything from calling worshipers in the morning to exorcising demons at night.