Nortel Networks BCM200 Caller ID trunk media bay module, Basic rate interface media bay module

Chapter 2 Introducing the BCM hardware 55

Tip: You can install a maximum of three DTM modules in the BCM main unit, depending on the available buses.

Caller ID trunk media bay module

There are two Caller ID trunk media bay modules (CTM):

•CTM4

The CTM4 connects a maximum of four analog calling line ID (CLID) interfaces to the BCM system through four RJ-11 jacks on the MBM faceplate. These jacks are labeled Line 1, Auxiliary, Line 2, Line 3, and Line 4. The auxiliary jack connects to Line 1.

•CTM8

The CTM8 provides eight analog CLID interfaces to the BCM system through eight RJ-11 jacks on the MBM faceplate. Each jack also supports disconnect supervision. There are two auxiliary jacks on this MBM which connect to Line 1 and Line 5.

The auxiliary ports enable you to connect to a V.92 or V.90 modem, fax machine, or analog telephone. When the auxiliary device is active, the BCM system disables the associated line. Conversely, when the line is active, the auxiliary port line is disabled. When you connect an analog telephone to the auxiliary port, you can use it as an emergency telephone because this line remains active during a power outage.

Figure 28 shows the front of the CTM4 and CTM8.

Figure 28 CTM4 and CTM8 module faceplate LEDS and connectors

CTM 4				Front View
				8	7	6	Aux	5
				CTM 8
1	Aux	2	3	4
				1	Aux	2	3	4
	CTM4
Power LED
Status LED
Line 1
Aux				Line 1
Line 2
Line 3				Auxiliary port
Line 4								CTM8
				Auxiliary port
				Line 5

Basic rate interface media bay module

The basic rate interface media bay module (BRIM) connects a maximum of four BRI ISDN loops to the BCM system. The BRIM only recognizes the T-interface used in European networks. To use the BRIM with the U-interface, typical in North American networks, you require an external NT1 box to convert the U-interface to a T-interface.

BCM200/400 4.0 Installation and Maintenance Guide