Peripheral Installation
Music-on-Hold (MOH)/ Background Music (BGM) Options
6-8
Strata DK40 I&M Manual Spring 1999
Refer to the Strata DK40 Programming Manual or DK Library CD-Rom for more details.
Configuration C–Three Music Sources
This configuration enables the MOH source to be connected to the RCA jack of the DK40
KSU (as in Configuration A). The digital or electronic telephone BGM source is connected to
a KSTU3, RSTU, 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 6-6).
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 provide zone
relays; therefore Configuration C is not possible with these PCBs.)
Exchange Lines and
Stations On-Hold
MOH
VA
VB
VR1 (Volume)
MOH SOURCE
Electronic/
Digital Telephone
Alternate
BGM Source
BGM/Page
Electronic/Digital
Telephone Speaker
External Speaker
BGM Source
Amplifier
PIOU Only
P23
600Ω
(BGM When Page is Idle)
Zone Relays
Activate with Page
Backplane Wiring
Installation Wiring
Page
(BGM: #481 On/#480 Off)
Page
Page
or BGM
BGM
BGM
* KSTU3, RSTU
1
,
PSTU
1
in Slot XX
2
RSTU/KSTU3/PSTU
1
25 Pair Connector
VA = 28, W-GN
VB = 3, GN-W
SLOT XX
2
, Circuit 2
RCA Jack
DK40 KSU
1506
Notes
1. An isolation transformer may be required if
connecting BGM source to a standard telephone port.
2. Program 19 assigns BGM Slot number.
Amplifier
To External
Page Speaker
Figure 6-6 DK40 Alternate Music Source Configuration C
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