Nortel Networks 400 4.0 User Manual
142
Chapter 9 Connecting the cables
N0060612
N0060612
Connect the MBMs to service providers
To connect DTM, CTM, CTM8, BRIM S/T, or 4x16 MBMs
1
On the front of the MBM, locate the RJ-48C jack (DTM), RJ-45 jack (BRIM), or the RJ-11
jacks (CTM and 4x16).
jacks (CTM and 4x16).
2
Wire one end of the cable to the demarcation blocks of the building.
shows the wiring pin-outs for a DTM to connect to a service provider.
Figure 75 DTM RJ-48C wiring array
shows the wiring pin-out for a CTM4, a CTM8, or the CTM jacks on a 4x16 MBM
to connect to the service provider.
All the MBMs have an auxiliary jack (the CTM8 has two). Do not attempt to plug digital
equipment into this jack.
equipment into this jack.
Figure 76 CTM RJ-11 wiring array
Warning: If you are using a service provider channel service unit (CSU), you must
disable the BCM system internal CSU.
disable the BCM system internal CSU.
1 2 3 4 5 6 7 8
DTM connector
To network
To plug
Receive from
network
1- Rring
2 - Rtip
3 - Rshield
Transmit to network
4-Tring
5-Ttip
6-Tshield
RJ-48C jack
6 5 4 3 2 1
CTM
connector
connector
RJ-11 jacks
Auxiliary jack
Pin #/connection
3- Ring
4 - Tip
The CTM8 has ten RJ-11 jacks, including two
auxiliary jacks.
auxiliary jacks.
The 4x16 and CTM4 MBMs have four RJ-11 jacks.