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INSTALLATION-PERIPHERALS
SECTION 100-816-207
MARCH 1993
7-2
FIGURE 7-1
DK8 AND DK16 MUSIC-ON-HOLD AND BACKGROUND MUSIC FUNCTIONAL DIAGRAM
(SEE MDF WIRING DIAGRAM FOR DETAILS)
MUSIC-
ON-HOLD
SOURCE
ON/OFF
CONTROL
(24 VOLT
MAX)
TWISTED PAIR
24 AWG.
VR1
MOH/BGM
VOLUME CONTROL
MAX.
MUSIC
MOH
RCA
JACK
PAGE/BGM
CONTROL
PAGE OR
BACKGROUND
MUSIC
MUSIC-
ON-HOLD
BACKPLANE
BGM TO:
DIGITAL
AND
ELECTRONIC
TELEPHONE
SPEAKERS
OPTIONAL
EXTERNAL PAGE/
BGM OUTPUTS
HESB OR
AMPLIFIER
AND
SPEAKER
(9)
(34)
B
M
P11
SELECT
MOH
PROG. 77-1
RELAY CONTACT SPECIFICATION:
24 VDC MAX.
1 AMPERE, MAX.
MOH/NT
RELAY CONTACT
JUMPER PLUG (MAKE OR BREAK)
( ) PIN NO.s OF PIOU
AMPHENOL CONNECTOR
MOH SOURCE SPECIFICATIONS:
INPUT IMPEDANCE: 600Ω
INPUT VOLTAGE:
RECOMMENDED LEVELS,
MIN. = 0.14 VRMS (-15 dBm)
MAX. = 0.77 VRMS (0 dBm)
•
•
DK8 KSU OR DK16 BASE KEY SERVICE UNIT
MOH TO:
CO LINES
AND
STATIONS
ON-HOLD
MOH OR
NIGHT TRANSFER
CONTROL
RELAY
*
*
W2, IF USING PIOUS
(SEE FIGURE 7-7)
TYPICAL MOH SOURCES:
• TAPE PLAYER
• TUNER
DK16 EXPANSION UNIT
PIOU/PIOUS (NOTE)
600 OHM
PAGE
RCA JACK
DK8 OR
DK16
RELAY
PROG:
77-1
(NOTE)
MOH CONTROL-CHOOSE BASE UNIT
OR PIOU/PIOUS RELAY:
NOTE:
DK8 KSU relay or DK16 Base Unit relay can be
programmed (77-1) as the MOH control relay: or in DK16
the PIOU MOH/NT relay can be used to control MOH.
AMPHENOL
PIN NO. (4)
(17)