This reminds me quite a bit of the trading turret phone system used in trading rooms. https://en.wikipedia.org/wiki/Trading_turret https://en.wikipedia.org/wik

This reminds me quite a bit of the trading turret phone system used in trading rooms. https://en.wikipedia.org/wiki/Trading_turret https://en.wikipedia.org/wiki/Trading_turret - Sorry I dont have much more to offer at this point.