Rackmount Du - Connections To The Backplane - Northern Telecom DMS-100 Series Installation And Maintenance Manual

0 297-2121-226
0 VINTAGE 05.01
0 for modem pool
0 connections - not
0 used for standard
0 installations
0
0
0
0
0
0
0
0
0
0 Ter-
0 minal >o o o o o o o o o o o o o o o o
0 strip
0
0
0
0
0
0 DB-25 >
0 for
0 DTE
0
0
0
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0 An RS-232C to V.35 adapter cable is required for V.35 data units
0
0 Note: not provisioned on NT4X25DH shelf if NT4X25DL DC to DC
0 power supply is provisioned.
0
0 Figure 4.5
0
0 power supply
0 damage it.
0
0 4. Connect the receptacle end of the power
0 supply via the location in the shelf backplane, then connect
0 the plug end of the cord to an unswitched 110V AC outlet.
0
0 5. Remove the protective safety bar from the front of the shelf.
0
0 To install the DC powered shelf in a central office:
0
0 WARNING - Ensure that the grounding precautions outlined
0 following procedure are taken during installation of the shelf in
0 a central office environment.
0 to existing -48 VDC equipment located in the
0 the DMS-100 Family switch.
0 4-10
V
C1
o o o o o o o o o o o o o o o o
o o o o o o o o o o o o o o o o
o o o o o o o o o o o o o o o o
o o o o o o o o o o o o o o o o
o o o o o o o o o o o o o o o o

Rackmount DU - Connections to the Backplane

without the minimum load of one data unit may
The installation should be performed
data lines
50-pin telephone
connector
V
GND PC
C0
MIC 1
MI 1
R1.1
T1.1
R1
T1
cord
Failure to do so may cause damage
building,
110 V ac
connector
(see note)
V
O O < copper
lugs
O
< -48Vdc
O lugs
to the power
in the
such as