Instruction manual

GLOSSARY
On-Net
On-Net facilities (for example, TTI trunks, private ISDN-PRI trunks) are dedicated to a
customer's private network. Whenever the call is routed over the customer's private
trunking facilities, it is called an On-Net call.
Outward Restriction
A calling party that is outward restricted is denied the ability of directly accessing the
exchange network ●
P
Paging Trunk
A telecommunication channel used to access an amplifier for loudspeaker paging:
Partitioned Group Numbar (PGN)
A Partitioned Group Number (PGN) is a number (1-8) assigned to different groups of
users. The PGN is used to determine the AAR/ARS services to be provided on a call. A
PGN is not used directly to restrict the user, it is only used as a method toindicate the
choice of call routing tables (AAR/ARS Analysis forms) to be used to process a call.
Pickup Group
A group of individuals authorized to answer any call directed to an extension number
within the group.
Port
A designation of the location of a circuit that provides an interface between the system
and lines and/or trunks.
Port Network
May be either an EPN or a PPN.
Primary Rofaronce
A DS1 circuit pack facility used as a reference for clock timing synchronization; the pri-
mary reference should be chosen to be a more reliable DS1 link.
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