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T1, E1, and Digital Voice Modules Passport 4400 Hardware Installation Manual
5-11
Figure 5-11. Digital Voice Expansion Module
DVEM Power Harness
You must install a Digital Voice Expansion Module Power Harness (NTAU32AA)
in Passport 4450 and 4455 units (5-slot chassis only) containing any Digital
Voice Expansion Modules. This harness provides the required additional power
to the Digital Voice Expansion Module boards.
The Digital Voice Expansion Module Power Harness must be ordered separately.
Caution:
!
The following applies to connecting the DVEM Power Harness:
•
Do not
connect the Digital Voice Expansion Module
Power Harness to the T1/E1 Voice Module.
•
If your Passport 4450/4455 unit contains only one Digital
Voice Expansion Module, there will be an additional,
unused connector on the power harness. Leave the spare
connector unconnected.
Rear
(Back Panel)
Front
Receptacles (12) for
Digital Voice Modules
Stacking
Connectors
Power Connector
(see Figure 5-12 on
page 5-12)
Indicators
Module Switch Group
(see Figure 10-1
on page 10-3)