The HANSHIN A2TKUA is a trunk line interface PCB for marine telephone exchanges. It manages connection to external central office lines, providing ring detection and line seizure functions for reliable shore-to-ship communication.
The HANSHIN A2HYUA is a hybrid interface PCB for marine telephone systems, enabling seamless integration of various communication lines. It provides flexible signal conversion and supports multiple operation modes like direct and selective calling for reliable shipboard use.
