TOPS-10 DECnet and PSI System Manager's and Operator's Guide

This guide provides instructions for system managers and operators on managing and monitoring TOPS-10 DECnet-10 V4.0 and PSI V1.0 networks. It covers system concepts, operation procedures, usage of the Network Control Program (NCP), troubleshooting with diagnostic tools like SPEAR and loopback testing, and specific configurations for X.25/PSI and terminal services. The document includes detailed parameter summaries and error message descriptions to assist in network administration.