Nortel Meridian 1 Mini-Carrier Remote Description, Installation, And Maintenance page 108

Page 108 of 150
P0914209 Standard 3.00 April 2000
Maintenance
Mini-Carrier Remote LED indicators
Both the Local Mini-Carrier Remote Interface card and the Remote
Mini-Carrier Remote Interface card have LED indicators on the front panel.
These are:
• Card LED—red LED indicating card status. If the LED is ON, the card
may be faulty or disabled. At power-up, the card LED blinks three times
during self-test if functioning correctly, otherwise it turns ON and stays
ON. The LED turns OFF when the card is software-enabled.
• Carrier LEDs—red LED indicating carrier status. The LED is OFF when
the carrier is operating correctly or it is not equipped by the MMI
command
SET CONFIGURATION (S C). If the carrier is faulty at either end,
the carrier LED will turn ON and stay ON until faults are corrected at
both ends.
Note: Far-end alarms are communicated across the link if the MicroLink
is up, i.e., the carrier is good end-to-end in both directions.
Maintenance LED—amber LED turns ON when the card is in the
maintenance mode, i. e., when carrier tests are run by the MMI command over
a carrier, when the Mini-Carrier Remote interface card is in Emergency
Stand-Alone Mode (ESAM), or when alarms are disabled by the MMI
command A D.
Mini-Carrier Remote MMI maintenance commands
The Local Mini-carrier Interface card and Remote Mini-carrier Interface card
provide a man-machine interface (MMI) port to connect to a TTY or a
configuration and maintenance terminal. Through this terminal you can
directly issue commands to test and maintain system carrier equipment
including the carrier links.
Table 20 on page 119 lists MMI commands that are directly issued to the
MCR system over MMI terminals, which are connected to the Local Carrier
Interface card MMI port and the Remote Mini-carrier Interface card MMI
port. When entering MMI commands, separate the command letters with a
space (A space D) and [P] indicates a pause. Detailed output of maintenance
commands is explained in various maintenance procedures in this chapter.