Connect An External Music Source; Music Source Specifications - Nortel BCM50 Installation And Maintenance Manual

1 Use the installation instructions that came with the external paging hardware to install the
external paging system.
2 Connect the paging system audio input to the page output on the telephony connector. Refer to
the "Telephony connector wiring chart" on page 223
for the page output.
3 Connect the paging system relay to the page relay output on the telephony connector. Refer to
the "Telephony connector wiring chart" on page 223
for the page relay output.
Warning: The paging connections must not be connected to exposed plant.
Tip: Paging tips
BCM50 external paging does not support talk back paging equipment unless you use
an external line port.
The BCM50 system provides paging over the telephone speakers when there is no
external paging equipment.
4
Select the appropriate option for your system:
• If you are adding more auxiliary equipment, proceed to
source" on page 127
• If you are finished adding auxiliary equipment, proceed to

Connect an external music source

Use this procedure to connect an external music source to the BCM50 system. You can use any
customer-supplied, approved, low power device as a music source. A music source includes
equipment such as a radio with a high impedance earphone jack.
Refer to the following sections for information on connecting an external music source:
• "Music source specifications" on page 127
• "Connect the music source using the music source jack" on page 128
• "Connect the music source using the telephony connector" on page 128

Music source specifications

Ensure that the music source follows these guidelines:
• Nominal input impedance is 3.3 kilohms.
• Nominal sensitivity of this interface returned to digital encoded PCM is -22 dBm0 for a 0.25 V
rms input signal.
or "Connect an auxiliary ringer" on page
Connecting the auxiliary equipment
to determine which pair of wires is used
to determine which pair of wires is used
"Connect an external music
126.
"Next step" on page
Connect the cables to the BCM50 system
127
130.