With the exception of the system console
(and, for certain HP 3000 Series 900 models),
the remote support modem and the first UPS on the system), which
has its own access port, asynchronous devices are connected to a
HP 3000 Series 900 computer through the Datacommunications
and Terminal Subsystem
(DTS). DTS includes all of the Datacommunications and Terminal Controllers
(DTCs) connected to the local area network
(LAN), a LAN interface card
(LANIC) connecting each host to the LAN, the LAN cable, and the
software that controls all of the DTS hardware. This software resides
on the HP 3000 and on the DTC.
During configuration, a relationship is specified between
the system's LANIC and each DTC through which asynchronous
device connections will be made. A link
for the LANIC is defined using the Node Management Configuration
Manager (NMMGR) utility. This link provides the asynchronous devices
with an entry point to the DTS.
