Troubleshooting Terminal, Printer, and Serial Device Connections - Edition 5 (32022-90058)

General Information
Datacommunications and Terminal Subsystem (DTS)
Chapter 1
18
LAN Interface Card (LANIC)
Every computer in the HP 3000 Series 900 family has a LAN Interface Card (LANIC) as
part of its hardware. This card is located in the System Processing Unit (SPU) and
enables the system to communicate with asynchronous devices via the LAN by providing
the basic connection between the computer and the LAN.
Datacommunications and Terminal Controllers are connected to the system by a Local
Area Network (LAN), over coaxial cable which conforms to the IEEE 802.3 standard.
Hewlett-Packard provides two versions of this cable, ThinLAN and ThickLAN, each
provides certain specific advantages to the user.
Each DTC has a unique LAN address which is made known to the system during
configuration. Also referred to as the node address or the station address, it serves to
identify the DTC as a node on the LAN. Keep in mind, however, that while DTCs are
treated as nodes for the purpose of configuration, they are not true nodes. DTCs are
dedicated communication devices; they are not self-contained, general-purpose computer
systems.