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DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Hardware Configurations
2-6Carriers in Multi-Carrier Cabinets
2
Expansion Control Carrier (J58890AF)
The Expansion Control Carrier is located in position A of each EPN. Table 2-3
describes the function of each carrier slot.
Table 2-3. Expansion Control Carrier Slots
Slot Name Circuit Pack Code Notes
POWER UNIT
(left side)
Power Unit (+5V)
631DA1 Required for
AC-powered systems
644A1 Required for
DC-powered systems
or empty
MAINTENANCE Maintenance TN775B Required
TONE-CLOCK Tone-Clock TN2182 Required
EXPN INTFC Expansion
Interface
TN570 Required
2 to 19 Port Boards Any common port
board. Slot 2 may
house a second EI if
the configuration
requires one.
POWER UNIT/
18, 19
Power Unit, Neon TN755B Required for certain
features; otherwise will
accept any common
port board.
POWER UNIT
(right side)
Power Unit
(-48V/-5V)
631DB1 Required for
AC-powered systems
645B1 Required for
DC-powered systems
649A TRI PLS OUTPUT for
DC-Powered cabinets