Nortel Networks BCM1000 manual External music source, Music on hold specifications

Chapter 13 Installing optional telephony equipment 159

2Connect the paging system relay to the Page relay output on the MSC. Refer to Figure 67.

Figure 67 Page relay jack

Page relay jack		MSC faceplate
		Ring
		Tip
		Sleeve
Tip:	Page relay output	Page relay
Ring:	Page relay output
Sleeve: Ground

Warning: The paging connections must not be connected to exposed plant.

Tip: Paging tips

Business Communications Manager external paging does not support talk back paging equipment unless you use an external line port.

The Business Communications Manager system provides paging over the telephone speakers when there is no external paging equipment.

External music source

(customer supplied)

You can use any approved low-power device as a music source. This would include equipment such as a radio with a high impedance earphone jack, as a music source.

Music on hold 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.

•The input is limited so that the encoded analog content at the digital interface to the network does not exceed -12 dBm when averaged over any three-second interval.

•The maximum non-clipped input level is 1 V rms.

•The interface is protected against ringing cross.

Installation and Maintenance Guide