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Auxiliary equipment connection
Nortel Business Communications Manager 450 1.0
Installation — System
NN40160-301 01.04 Standard
July 2009
Copyright © 2006-2009 Nortel Networks
Connecting an external paging system
You can connect a customer-supplied external paging system to provide
paging over external loudspeakers.
Prerequisites
•
You must connect the paging connections to unprotected telephony plant
wiring.
•
External paging does not support talk back paging equipment unless you
use an external line port. The BCM450 system provides paging over the
telephone speakers when no external paging equipment is available.
•
A Standard 1/8" Stereo mini jack is needed for the paging port on the Base
Function Tray.
•
Ensure the paging system follows these guidelines:
— The paging output from the main unit is 100 mV rms across an input
impedance of 600
Ω
.
— The output level is 0 dBm0 with reference to 600 ohms for a PCM
encoded signal at 0 dBm. No DC voltage exists across the page output
terminals. When you use the page signal output to connect an external
paging amplifier, you also use the page relay output that contains a
floating relay contact pair. The system uses this output to control the
external paging amplifier.
— The contact pair for the page relay output has a switch capacity of
50 mA (non inductive) at 40 V (maximum).
Procedure steps
Step
Action
1
Install the external paging hardware using the installation instructions
supplied with the external paging system.
2
Connect the paging system audio input to the page output connection.
3
Connect the paging system relay to the page relay output connection.
4
Verify that the external paging system functions properly.
--End--
Connecting the music source using the music source jack
You can use a customer-supplied, low-power device as a music source. A
music source includes equipment such as a radio with a high-impedance
earphone jack.
Summary of Contents for BayStack 450 Switch
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