Avaya 03-300430 User Manual
Communication Manager Maintenance-Object Repair Procedures
778 Maintenance Procedures for Avaya Communication Manager 3.0, Media Gateways and Servers
DC-Powered Cabinets
DC Power-Distribution Unit (J58890CF-2)
on page 778 shows a
power-distribution unit in some DC-powered multicarrier cabinets. The unit sits at the bottom of
the cabinet and contains the ring generator, 20-Amp circuit breakers, terminal blocks, and
system fan power.
the cabinet and contains the ring generator, 20-Amp circuit breakers, terminal blocks, and
system fan power.
Figure 43: DC Power-Distribution Unit (J58890CF-2): Front
Some carriers may contain two power supplies, the 644A and the 645B, that together supply the
required voltages to the carrier. Other carriers may contain one 649A power supply located on
the right side of the carrier. In these systems, an additional 649A is located on the right of the
optional switch node carriers.
required voltages to the carrier. Other carriers may contain one 649A power supply located on
the right side of the carrier. In these systems, an additional 649A is located on the right of the
optional switch node carriers.
on page 779 shows a typical
AC-powered multicarrier cabinet.
4
2
Circuit
Breakers
DC Power
Distribution
Unit
Ring
Generator
Generator
Terminal
Block
Block
mcc_dc_1 PDH 062696