Elevator Camera Infrastructure

I'm designing a surveillance system which includes several banks of 8 elevators, each with a camera. I'm using Ethernet-over-coax transceivers for signal/power transmission over the RG-59 cable in the travel cable. I was talking to the elevator designer about how the security contractor would pick up the RG-59 cables in the elevator control room. His comment was 'this detail is usually field-coordinated'.

My question is: How does the security contractor tie in to the control room end of multiple elevator camera travel coax cables? In the elevator equipment rack? Does the security contractor provide a junction box (if so; where)?

I'd be interested in related experiences and solutions. Thanks in advance.

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