Nortel NT1R20 Description page 198

Page 174 of 290
553-3001-105 Standard 5.00 June 1999
NT5D33 and NTRB34 Line-side E1 Interface Cards
When entering the Set Alarm (S A) command, the MMI will scroll
through the previously described series of alarm options. These options will
be displayed along with their current value, at which point you can enter a
new value or enter a <CR> to retain the current value. Table 46 outlines the
options available in the Set Alarm (S A) function.
Table 46
Set alarm options
Option
AL1 Threshold
AL1 Duration
AL2 Threshold
AL2 Duration
Frame Slip Threshold
Frame Slip Duration
Note: If the duration period set is too long, the Line-side E1 card will be
slow to return to service automatically even when the carrier is no longer
experiencing errors. The CLEAR ALARM (C A) command will have
to be entered manually to restore service promptly. To avoid this, an
alarm's duration period should normally be set to 10 seconds.
Description
Sets the allowable bit errors per second before
alarm level 1 is activated. Factory default is 6.
Sets the duration in seconds (from 1 to 3,600
seconds) that alarm level 1 is activated. Factory
default is 10 seconds.
Sets the allowable bit errors per second (from 3 to
9) before alarm level 2 is activated. Factory default
-5.
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.