Communications Options Minireference Manual

This document serves as Volume 4 of the Communications Options Minireference Manual series, specifically covering Ethernet products. It provides essential installation, maintenance, and troubleshooting information for:

• DECSA Communications Server
• DELNI Local Network Interconnect
• DEUNA UNIBUS Network Adaptor
• H4000 Ethernet Transceiver

The content for each device is organized consistently, covering general descriptions, hardware components, installation flow diagrams, power requirements, diagnostic procedures, and field-replaceable units (FRUs). It also includes sections on required special tools and test equipment, as well as a guide to cabling and connectors used in Ethernet environments.