Nortel Networks R2MFC Manuel D’Utilisation
Chapter 6 R2MFC MBM maintenance 67
R2MFC Media Bay Module Installation and Configuration Guide
The second set of LEDs on the faceplate indicate the operation status for the E1.
describes the LEDs and what status they indicate.
•
On power up, all four LEDs are set to off.
•
The ERR Tx is only relevant when the ALM Tx and ALM Rx LEDs are off.
•
ERR Rx is triggered when the Tx ALM exceeds maintenance thresholds: BPV, CRC4, and
slip.
slip.
•
ALM Tx is triggered by loss of communication with lower board (PRI board), or other internal
error.
error.
•
ALM Rx is triggered by LOS, AIS, OOF, OOM, and when the ERR Rx alarm exceeds OOS
threshold: BPV, CRC4, and slip.
threshold: BPV, CRC4, and slip.
•
RAI transmission indicates a receive fault.
Logs and traces
Logs are available through the Logger directory in the CLI. This directory contains commands that
allow filters to be placed on the E1, for different types of errors, down to the channel level. Errors
can be stored in buffer, and then viewed or printed.
allow filters to be placed on the E1, for different types of errors, down to the channel level. Errors
can be stored in buffer, and then viewed or printed.
Error messages
Software error messages are available through the SWerr directory in the CLI. The errors are
stored in a cyclic buffer that can be accessed to help in troubleshooting. See
stored in a cyclic buffer that can be accessed to help in troubleshooting. See
for specific commands and details.
Table 15 System status monitor LEDs
LED Name
Yellow LED
OFF
Red LED
ALM Rx
Problem with digital input on external
R2 link; link unusable.
Normal
Operation
N/A
ERR Tx
Remote Alarm Indication (RIA)
transmitted on external R2 link.
Normal
Operation
N/A
ALM Tx
N/A
Normal
Operation
Inability to transmit: Alarm
Indication Signal (AIS) sent on
external R2 link
ERR Rx
Degradation of digital input on external
R2 link; link is still usable.
Normal
Operation
N/A