Instruction manual

Features and Services
Paging System Access
Description
This feature provides users with dial access or feature button access to paging equipment.
System 25 can provide an interface to paging systems that require a ground start trunk port, a loop
start trunk port, or an industry-standard tip/ring station line port. The exact interface depends upon
the paging system’s requirements. System 25 can also support single-zone, simple amplifier type
paging systems that require contact closure (the equivalent of a push-to-talk button) by using a
paging system adapter, or by using a special Auxiliary Trunk CP (TN763) with its supporting
hardware.
A single-line, multiline voice terminal, or ATL cordless telephone user (including the attendant) can
access paging equipment by dialing the appropriate paging system access code. Depending upon
the capabilities and options of the paging system it may be necessary to dial individual zones once
the paging equipment has been accessed. (A zone is a number of paging loudspeakers that form a
logical group. A zone might include all of the loudspeakers in a given room, or all of the
loudspeakers in all of the areas of a building that share a common function. For example, all of the
loudspeakers on a factory floor might be grouped into one zone, while all of the loudspeakers in all
of the conference rooms might be grouped into another zone.)
In most modern paging systems, paging zones are provided by the paging equipment and selected
by passing dial codes to the paging equipment. If you want to retain one or more older paging
systems, a similar form of zone paging may be achieved by using an Auxiliary Trunk CP and up to
three single zone paging systems. The Auxiliary Trunk CP provides three ports which may be used
to interface paging systems. Each of these ports is identified by a unique access code. A fourth code
is used to access all three paging systems (zones) simultaneously.
A paging system that is interfaced to System 25 via a ground start trunk port, a loop start trunk port,
or an auxiliary trunk port can be administered to be dial restricted. This restricts users from
accessing the equipment unless they are assigned DSS buttons with paging access codes. A paging
system that is interfaced to System 25 via an industry-standard tip/ring station line port cannot be
administered to be dial restricted.
Considerations
System 25 can support virtually any new or in-place third-party paging system. Most modern paging
systems interface through a ground start trunk port, a loop start trunk port, or an industry-standard
tip/ring station line port. System 25 can also support paging systems that require a generic interface
with contact closure by using a paging system adapter, or by using an Auxiliary Trunk CP with its
supporting hardware. Selection of a particular port as an interface for a paging system will be
governed by the requirements of the specific paging system involved.
2-244
November 1995