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 pos ition A of each EPN. Table 2-3
describes the func tion 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 c ommon
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 O UTPUT fo r
DC-Powered cabinets