Toshiba Strata DK 24, Installation And Maintenance Manual

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8-6
INSTALLATION-PERIPHERALS
SECTION 400-096-208
SEPTEMBER 1992
3.20 BGM Options
3.21 The BGM options allow music to play over
optional external speakers (external page system)
and/or digital and electronic telephone speakers.
The system allows BGM to be configured any of the
three ways described below:
1) Configuration A—one music source: This con-
figuration allows BGM and MOH to share the
same music source. (See Figure 8-4.) With
this configuration, the MOH/BGM music source
is connected to the P6 terminal on the PCTU
or PCTUS PCB. The music source is sent to
CO lines/stations on hold, to electronic/digital
telephone speakers, and to the external page
system via either the PIOU, PIOUS, or PEPU
optional PCB.
NOTE:
Telephone users can turn on BGM at their
station by pressing the
TelÍSetÍMusic
( BGM ) button; or by pressing the Intercom
( INT ) button and dialing 4 8 1 .
2) Configuration B—two music sources: Avail-
able with Release 2 and higher, this configu-
ration allows the MOH source to be connected
to the P6 terminal of the PCTU or PCTUS PCB
(as in Configuration A) and a separate BGM
FIGURE 8-4
MUSIC SOURCE CONFIGURATION A
CO LINES AND
STATIONS ON-HOLD
ELECTRONIC/DIGITAL
TELEPHONE SPEAKER
(BGM: 481 ON/480 OFF)
(BGM WHEN PAGE IS IDLE)
(8 OR 600 OUTPUT)
Ω Ω
P6 TERMINAL
VR1 (VOLUME)
PCTU
PIOU
PIOUS
PEPU
MOH
BGM PAGE
MOH/BGM
SOURCE (SHARED)
600 , 0-1 VOLT RMS
Ω
TO EXTERNAL
PAGE SYSTEM
source to be connected to either a PEKU
(Circuit 3), a PESU (Circuit 8), or, with Re-
lease 4, a PSTU (Circuit 3 or 8) PCB (see
F
i g u r e s
8-5 and 8-6). With this configuration, the MOH
source is sent only to CO lines/stations on
hold, while the BGM source is sent directly to
electronic/digital telephone speakers and to
the external page system via either the PIOU,
PIOUS, or PEPU.
3) Configuration C—three music sources: This
configuration allows the MOH source to be
connected to the P6 terminal of the PCTU or
PCTUS (as in Configuration A). The digital or
electronic telephone BGM source is connected
to either a PEKU, a PESU, or PSTU PCB (as
in Configuration B), and a separate BGM
source is sent to the external page speakers
via the PIOU PCB (see Figure 8-7). When a
separate BGM source is connected to the
PIOU, two customer-supplied amplifiers are
required to drive the external speakers. One
amplifier drives the speakers for BGM when
page is idle and the other amplifier drives the
speakers during page. The PIOU switches
BGM or page to the external speakers via
zone relays. (The PIOUS and PEPU do not