Nortel Networks 1000 - Manual (Page 230)

230 NT5D11 and NT5D14 Lineside T1 Interface cards
When entering the Set Alarm command set, the MMI scrolls through the
previously described series of alarm options. These options are displayed
along with their current value. Enter a new value or press Enter to retain
the current value.
Table 92 "Set alarm options" (page 230) outlines the
options available in the Set Alarm function.
Table 92
Set alarm options
Option Description
AL1 Threshold Sets the allowable bit errors per second (from 3 to 9) before alarm level 1 is
activated. Factory default is 10
–6 .
AL1 Duration Sets the duration in seconds (from 1 to 3,600 seconds) that alarm level 1 is
activated. Factory default is 10 seconds.
AL2 Threshold Sets the allowable bit errors per second (from 3 to 9) before alarm level 2 is
activated. Factory default is 10
-5 .
AL2 Duration Sets the duration in seconds (from 1 to 3,600 seconds) that alarm level 2 is
activated. Factory default is 10 seconds.
Frame Slip
Threshold Sets the allowable frame slips per time period (from 1 to 255) before alarm
level 2 is activated. Factory default is 5.
Frame Slip
Duration 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.
Note: If the duration period is set too long, the Lineside T1 card can
be slow to return to service automatically even when the carrier is no
longer experiencing any errors. The Clear Alarm command must be
entered manually to restore service promptly. To avoid this, the duration
period should normally be set to 10 seconds.
Set Clearing
Use the Set Clearing (S C) command set to enable or disable alarm
self-clearing. Answer Y or N to the question: "Enable Self Clearing? (YES
or NO)". If "Enable Self-Clearing" is chosen (the factory default condition),
the system automatically clears alarms after the alarm condition is no
longer detected for the corresponding duration period.
The "Disable Self-Clearing" option causes the system to continue the
alarm condition until the Clear Alarm (C A) command set is entered. Line
processing and the yellow alarm indication to the CPE is terminated as
soon as the alarm condition clears, even if "Disable Self-Clearing" is set.
Display Configuration
The Display Configuration (D C) command set displays the various
configuration settings established for the Lineside T1 card. Entering the
Display Configuration (D C) command set causes a screen similar to the
following to appear:
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.