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INSTALLATION INSTRUCTIONS
SECTION 200-255-204
FEBRUARY 1992
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FIGURE 4-69-PAGINGWlTHMUSlCOVEREXTERNALSPEAKERFROMSAMEAMPLlFlER
control lead (52 and J502 pin 27 or Jl and 52
for PERCEPTION,&,, , respectively) can be
connected to the MUTE terminal of the page
amplifier music channel. When any page ac-
cess code is dialed, a ground output is applied
to the PGl lead to mute the music.
9.36 All paging connections are made at the J2 and
J502
or Jl
and
52 connectors
on the
PERCEPTION,&,,
systems, respectively. The
connectors are located on the rear of the basic and
expansion cabinets. See Tables 5-4 and 5-10 for
details,
9.40 Music-on-Hold
9.41 A Music-on-Hold (MOH) interface is a stan-
dard feature on the system. The circuitry occupies
part of the NPRU PCB. If MOH is equipped, it will be
heard by any station or trunks on-hold in the sys-
tem, or by any trunk put into the camp-on state.
9.42 A tuner or other program source, supplied by
the customer, is connected to the MOH input via pins
4 and 29 (Br-W and W-BR) of J2 or J502 / Jl or J2
forthe PERCEPTION e&ex systems, respectively (see
Tables 5-4 and 5-10). The input impedance is 600
ohms. (This cannot be the same source used to
provide music over external speakers.)
9.43 Adjust the MOH volume with the MOH vol-
ume control on the front of the NPRU PCB. Maxi-
mum volume is limited by internal circuits in order
to comply with FCC regulations.
9.50 Universal Night Answer
9.51 The Universal Night Answer (UNA) feature
provides an output of interrupted ringing voltage
(85 +10 VRMS, 20 Hz superimposed on -24 VDC)
whenever the system is in Night Service and an
incoming call is received by a trunk designated for
UNA. Any station user, upon hearing the chime or
bell, can dial the UNA access code and be con-
nected to the caller.
9.52 The ringing voltage output is intended to
control a strategically located chime or loud ring-
ing bell. The available power is five ringer equiva-
lents.
9.53 Two UNA zones can be installed in tenant
systems. Either zone can be assigned in program-
ming to either tenant. For PERCEPTION,, con-
nections to the UNA ringing signal are via pins 12
and 37 (0-BK, BK-0) of J2. This connection is to
J502 in the expansion cabinet for UNAZone 1 (see
Tables 5-4 and 5-10). UNA zone 1 requires a
second NPRU PCB in the expansion cabinet.
4-62
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