Cable Interface Board

This document provides a schematic diagram for the Cable Interface Board (M970-0-1). It details the modem jumper functions, including EIA secondary transmit/receive data lines, BELL 303 series compatibility, BELL 811B restraint function monitoring, and BELL 811B force busy functions. A parts list is also included, listing components such as flip chip handles, split lugs, and connectors used on the board.