Lucent Technologies MERLIN LEGEND System Manager's Manual page 70

MERLIN LEGEND Communications System Release 5.0
System Manager's Guide 555-650-118
3 System Components
Control Unit
Figure 3–1.
A super capacitor in the processor module provides backup power for the
system's clock and its memory in case of power failure or system shutdown. The
super capacitor retains data for four to five days.
PCMCIA Memory Card
The processor includes 4 MB of on-board memory that can be erased and written
over multiple times. A PCMCIA memory card can be used to install or upgrade the
system software into this memory. A memory card can also be used to back up
and restore system programming.
There are different types of memory cards, each about the size of a credit card.
Their labels indicate contents and function. Described below are three types of
PCMCIA memory cards that you may encounter. For more information, see
System Programming or contact your Lucent Technologies representative.
Feature Upgrade Memory Card. Orange label with black bars; entitled
Forced Installation . To upgrade your system to the latest release.
Maintenance Upgrade Memory Card. Orange label; entitled Upgrade
Card. To fix problems in the system.
Module Label
Error/Status Code Display
PCMCIA
Interface Slot
Debugging Port (plugged to prevent access)
Alarm Status Light
SMDR Port
ADMIN Port
Processor Module
3
Issue 1
June 1997
Page 3-3