Toshiba Strata CT, Installation & Maintenance Manual

Page: 194 / 385

Peripheral Installation
6-6
Strata CT I&M Manual October 2000
BGM Options
The BGM options allow music to play over optional external speakers (external page system)
and/or digital and electronic telephone speakers. BGM can be configured in three ways:
Configuration A – One Music Source
This configuration enables BGM and MOH to share the same music source ( see Figure 6-3 ).
With this configuration, the MOH/BGM music source is connected to the RCA jack on the
Strata CT processor PCB. The music source is sent to Exchange lines/stations on hold, to
electronic/digital telephone speakers, and to the external page system via the PIOU, PIOUS,
or PEPU optional PCBs. Station Port 000 must dial
#491
to send MOH over BGM and
#490
to disable the option.
Figure 6-3 MOH/BGM Music Source Configuration A
Note Telephone users can turn on BGM at their station by pressing the
Tel Set Music
(BGM)
button; or by pressing [PDN] +
#481
(
#480
turns BGM Off).
Configuration B – Alternate Background Music Source
This configuration enables the MOH source to be connected to the MOH RCA jack of the
Strata CT Processor, (as in Configuration A) and a separate BGM source to be connected to a
RSTU or PSTU (circuit 2) PCB (
see Figures 6-4 and 6-5 ). With this configuration, the MOH
source is sent only to Exchange lines/stations on hold, while the BGM source is sent directly
to electronic/digital telephone speakers and to the external page system via the PIOU,
PIOUS, PEPU or BGM 600 ohm RCA jack.
Note The BGM source port connected to the system must have the same EN60950
classification as the Strata CT. This port must therefore be of a SELV (Safe Extra
Low Voltage) classification.
Exchange Lines and
Stations On-Hold
Electronic/Digital
Telephone Speaker
(BGM: #481 ON/#480 OFF)
MOH RCA Jack
VR1 (Volume)
MOH
BGM Page
MOH/BGM
Source (SHARED)
600
Ω
, 0.15 - 0.77 Volt RMS
4254
B_C_U
To External
Page System
(BGM when page is idle
or 600
W
output)
PIOU
PIOUS
PEPU
H
C