flush-mounted into the console, its illuminated digits softened by the built-in dimmer control.

Tonight, the President of a small but volatile nation was asleep three floors above her. And the VMP-430 was screaming a silent, red error light:

: Manually switches speech direction for simplex communication. Technical Specifications Operation Voltage Powered directly from the ACM exchange Cable Requirements Twisted 2 pairs, 0.5mm² with an outer screen Connections Standard screw terminals for simplified installation Frequency Range 300 – 5000 Hz Protection Class IP44 (splash-proof) Dimensions 125W x 280H x 35D mm Weight Operating Temp 5°C to 55°C Installation & Configuration

: The unit must be fitted into a precisely cut aperture on a console or bridge wing panel. Ensure that the rear of the unit has adequate ventilation and is protected from moisture.

If the VMP-430 has a real-time clock for logging calls, it likely has an internal coin battery (CR2032). The manual specifies a replacement interval. If this battery dies, call logs may be lost upon power cycling.