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Installation and Maintenance Guide
Chapter 14
Install Optional Telephony Equipment
Use the procedures described in this chapter to connect the optional ringer, page, and music
telephony equipment to the media services card (MSC) connectors. Locate the MSC connectors on
the front of the Business Communications Manager base function tray. Refer to “Media services
card (MSC)” on page 57.
Media Service Card Connections
The MSC faceplate provides the following connections for optional telephony equipment:
• Auxiliary ringer
• Page relay
•Page output
• Music on hold
Install an auxiliary ringer
An auxiliary ringer is a customer-supplied piece of hardware that provides external ringing
capability to telephones on the Business Communications Manager, if the telephones are set to
allow it.
Use this procedure to install an auxiliary ringer.
1 Use the installation instructions that came with the ringer hardware to install the auxiliary
ringer.
2 Connect the ringer generator miniature jack to the auxiliary ringer output on the MSC. Refer to
Figure 184.
Figure 184 Auxiliary ringer jack
Warning: The auxiliary ringer must not be connected to exposed plant.
The ringer must not draw more than 50 mA from a 40 V DC source.
Tip
Ring
Sleeve
Auxiliary ringer jack
Tip: Auxiliary relay output
Ring: Auxiliary relay output
Sleeve: Ground
Auxiliary ringer
MSC Faceplate