Connecting To Gatm4/Gatm8, And G4X16/8X16 Mbms; Connecting To Dtm, Brim, Ctm, And 4X16 Mbms - Nortel Business Communications Manager 450 Installation Manual

Connecting to GATM4/GATM8, and G4x16/8x16 MBMs

Analog telephone lines connect to your BCM450 system through the
GATM4/GATM8, and G4x16/G8x16 CTM MBMs.
Prerequisites
• Obtain a 25-pair connector cable with an RJ-21 connector on one end.
• For detailed information about the wiring of the GATM4 or GATM8, see
GATM wiring chart (page
• For detailed information about the wiring of the G4x16 or G8x16 MBM, see
G4x16 and G8x16 wiring chart (page
Procedure steps
Step
1
2
3

Connecting to DTM, BRIM, CTM, and 4x16 MBMs

Connect telephone lines to your BCM450 system through the DTM, BRIM,
and 4x16 MBMs.
Prerequisites
• If the network ISDN is a U-loop, you must connect the BRIM only to an
NT1 provided by the service provider. The NT1 must provide a
Telecommunication Network Voltage (TNV) to Safety Extra Low Voltage
(SELV) barrier.
• Do not attempt to plug digital equipment into the auxiliary (AUX) jacks on
the front of a 4x16 MBM.
Copyright © 2006-2009 Nortel Networks
134).
Action
If you use the GATM4 or GATM8, plug the RJ-21 end of the connector cable
into the RJ-21 connector on the front of the MBM.
OR
If you have the G4x16 or G8x16 MBM, plug the RJ-21 end of the connector
cable into the lower RJ-21 connector on the front of the MBM.
If you use a straight RJ-21 connector, secure the RJ-21 connector to the
MBM with the two supplied screws on the sides of the connector.
OR
If you use a right-angle RJ-21 connector, secure the RJ-21 connector to the
MBM with the supplied screw on the left side of the connector and with the
supplied cable tie on the right side of the connector to fasten the 25-pair
cable to the anchor on the MBM.
Connect the other end of the connector cable to the telephone company
demarcation blocks of the building.
Nortel Business Communications Manager 450 1.0
Installation — System
NN40160-301 01.04 Standard
July 2009
Lines and extensions connection 65
137).
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