1
CSP - STPA
Issue 3
(540) 427-3505
STPA
TELEPHONE PAGE ADAPTER
INTRODUCTION
The STPA is a Telephone Page Adapter used to interface
Clarity mixer-amplifiers to Centrex lines, C. O. lines and
PABX stataion numbers. This instruction contains the
specifications and guidelines necessary to install, operate,
and maintain the STPA which is manufactured by Clarity,
1111 Industry Avenue, Roanoke, VA 24013.
This paging unit has received FCC type KX registration.
This Registration Number will be listed in the affidavits
filed with the telephone company; it will also be recorded
in the system log kept by installation and maintenance
personnel. The local telephone company is to be notified
of the FCC Registration Number and Ringer Equivalence
Number. FCC Registration Number: BAF9I7-13957-
OT-N; Ringer Equivalence Number: 1.1A. The STPA
connects to the telephone line by means of a standard jack
called the USOC RJ11C.
In accordance with FCC Rules with application tariffs,
the Page Adapter may only be installed with the
authorization of the owner of the host system.
DESIGN
General
The Clarity STPA Expandable Station Level Page
Adapter is designed to provide access to paging from a
standard PABX station number, a Centrex number, or a
Central Office line. The unit is directly connected to
Clarity mixer-amplifiers. Multiple Telephone Page
Adapters with mixer-amplifiers may be used to provide
multizone paging.
PABX Station Level Paging
NOTE: Before proposing Station Level Paging for your
PABX perform the following test:
1.
Dial between two stations on the PABX and
answer the call.
2.
Have the called party listen after the calling
party hangs up.
3.
After calling party release, what does the called
party hear?
If the PABX IMMEDIATELY returns any type of tones
to the called party (dial tone, reorder tone, etc.) then
STATION LEVEL PAGING CAN NOT BE USED.
Consult your Clarity catalog for an appropriate trunk
level page adapter. If there is a delay of at least 10
SECONDS before any tones are returned, then one-way
paging may be used but talkback paging will be
impossible. If the line REMAINS SILENT after
disconnect, then one-way or talkback paging may be
used.
If the type of paging you desire is possible on a station
level of your PABX, then continue in this section to
determine the equipment required.
1.
One Zone of One-Way Paging
This arrangement will require one PABX
station number, one STPA page adapter,
appropriate Clarity mixer-amplifier, and
speaker assemblies.
2.
Multi-Zone One-Way Paging with All Call
This arrangement will require a PABX station
number and STPA for each zone, and an
additional number and STPA for All Call.
Centrex or C. O. Line Access to Paging
1.
One Zone of One-Way Paging
One zone of one-way paging will require one
Centrex or C. O. Line, a STPA, and the
appropriate speakers.
2.
Multi-Zone One-Way Paging with All Call
This arrangement will require a PABX station
number and STPA for each zone, and an
additional number and STPA for all call.
947421
SPECIFICATIONS
Applications
