Grace Digital GDI-IRBM20 Business Music System - Manual (Page 7)

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NOTE: Most phone systems have an RCA connection on the PBX or Key System unit.
Some systems may have a 3.5mm mini connection.
RCA-to-RCA & RCA-to-3.5mm mini connector cables are included.
STEP 4 (Phone System) connect other end to the Phone system’s on-hold input jack
STEP 4 (Audio System ) connect (L) (R) cables to Audio system’s jacks
NOTE: IF the jack cannot be located on the phone system, contact the Vendor for the
phone system you are using to identify the correct connection location.
o OPERATION
FRONT PANEL VIEW:
STEP 1 Press the Power Button on the front of the unit to power on the device
STEP 2 Press the Power Button on the front of the unit to power on the device
STEP 3 Turn the Volume Control Knob on the front of the unit to set the outgoing
volume level to be heard by the caller on hold
NOTES:

Volume Knob controls the built-in Speaker and controls the volume level to
the PBX system / KEY phone system

Continuous playback will begin automatically

Press the Speaker Button to turn the monitor Speaker ON and monitor the
audio output to your system, or turn the monitor Speaker OFF and not
monitor the audio
FUNCTIONS & CONTROLS
FRONT PANEL VIEW: