Nortel Meridian 1 Option 11C Planning And Installation Manual page 21

Common equipment circuit cards
Small System Controller (SSC) card and components
Figure 5
NTAK76 battery box
• An UnInterruptible Power supply (UPS) for continuous AC power
supply.
Note: Customer-supplied battery backup units can be connected to the
cabinets using an NTAK28 Junction Box.
The circuit cards described in this section are used in the Option 11C Main
cabinet and IP Expansion cabinets where indicated.
The NTDK20EA SSC card is the minimum vintage required for Option 11C
main cabinets with IP connectivity.
Note: The NTDK20CA and the NTDK20DA earlier vintages may be
used in IP Expansion cabinets only.
Equipment identification Page 21 of 408
Option 11C Planning and Installation Guide