Vingtor Vmp-430 User Manual -

The VMP-430 acts as the central hub. It routes calls, manages alarm signals, and ensures that a telephone on the bridge can communicate clearly with an engine room handset, despite the roar of engines in the background.

For the crew members who do not read the technical manual but simply pick up the phone, the VMP-430 offers specific functionalities designed for rapid response. vingtor vmp-430 user manual

I couldn't locate an official user manual for the in my current resources. This model appears to be a marine/public address or intercom system component from Vingtor (now part of Zenitel ), commonly used on ships and offshore platforms. The VMP-430 acts as the central hub