Lucent Technologies MERLIN LEGEND 6 - Manual (Page 85)

MERLIN LEGEND Communications System Release 6.0
System Manager’s Guide
555-660-118
Issue 1
February 1998
System Components
Page 3-3 Control Unit
3
Figure 3–1. Processor Module
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 3
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.
Pr
ocessor
Debugging Port (plugged to prevent access)
Module Label
SMDR Port
ADMIN Port
Error/Status Code Display
PCMCIA
Interface Slot
Alarm Status Light