Nortel Circuit Card Installation Manual page 294

Page 294 of 906
553-3001-211 Standard 3.00
NT5D33 and NT5D34 Lineside E1 Interface cards
Table 107
Set alarm options
Option
AL2 Threshold
AL2 Duration
Frame Slip
Threshold
Frame Slip Duration
Note: If the duration period set is too long, the LEI card is slow to return
to service automatically even when the carrier is no longer experiencing
errors. The CLEAR ALARM (C A) command has to be entered
manually to restore service promptly. To avoid this, an alarm's duration
period is normally set to 10 seconds.
Set Clearing
The SET CLEARING (S C) command allows self-clearing of alarms by
responding to the question: Enable Self Clearing? (YES or NO). If YES is
chosen (the factory default setting), the system automatically clears (resets)
alarms after the alarm condition is no longer detected. Choosing the NO
option causes the system to continue the alarm condition until the Clear
Alarm (C A) command is entered. Line processing and yellow alarm
indication to the CPE terminates as soon as the alarm condition clears, even
if self-clearing is disabled.
Set Simple
The SET SIMPLE command controls call tear-down signaling when the
far-end disconnects from a call.
August 2005
(Part 2 of 2)
Description
Sets the allowable bit errors per second (from 3 to
9) before alarm level 2 is activated. Factory
-5
default is 10 .
Sets the duration in seconds (from 1 to 3,600
seconds) that alarm level 2 is activated. Factory
default is 10 seconds.
Sets the allowable frame slips per time period
(from 1 to 255) before alarm level 2 is activated.
Factory default is 5.
Sets the duration in hours (from 1 to 24) that the
frame slips are counted. After this time period, the
counter is reset to 0. Factory default is 2 hours.