Which device is used to manage party lines at CRAS in this material?

• A. RTS PS20
• B. RTS 4030
• C. Key Panel
• D. CRAS Console

Answer: (A)

In this material, party lines are the shared communication paths that multiple operators use, so you need a device that actively routes and controls who talks on each line. The RTS PS20 is described as the component that handles that line management—selecting, gating, and coordinating who can talk and listen on the various party lines. It sits as the central controller for these lines, rather than just providing a user interface or acting as the main system control.

The other devices serve different roles: a 4030-type unit or a Key Panel are typically used for selecting lines or quick access, but they don’t perform the overarching party-line routing and control. The CRAS Console is the main control interface for the system, not the device specifically dedicated to managing party lines. So the RTS PS20 is the one designed to manage those lines in this material.