AT&T Network Adapter 25 Installation And Maintenance Manual page 425

GLOSSARY
Floating— Assigned to visitors who will be moving about the
premises. Floating PDCs may be associated with the
attendant position or may be "logged in" by the user at any
voice terminal. Calls to the floating PDC will ring at the
terminal where "logged in. "
Pickup Group
A group of individuals who can answer any incoming call within the
group by dialing a code.
P o r t
An interface circuit between System 25 and associated trunks and
terminals. Specifically:
Terminal port (station port)
Facility port (trunk port)
Auxiliary equipment port.
Private Branch Exchange
A switching system that provides switched communications access
among its terminals and facilities (for example, System 25).
Private Network
A network used exclusively for handling the
needs of a particular customer.
Private Network Office Code (RNX)
The first three digits of a 7-digit private network number. These
codes are numbered 220 through 999, excluding any codes that have
a 0 or 1 as the second digit.
G-12
telecommunications