Cable Interface Board

This document provides the schematic and parts list for the M970-0-1 Cable Interface Board. It includes a detailed jumper configuration guide for modem operations, covering functions such as secondary transmit/receive data lines, Bell 303 series ring and data terminal ready support, and Bell 11B restraint functions. A transistor and diode conversion chart is referenced, and a comprehensive parts list is included for hardware components like split lugs, connectors, and the etched circuit board.