Nortel Networks 553-3001-211 manual Set Clearing, Set alarm options Option Description

NT5D11 and NT5D14 Lineside T1 Interface cards Page 223 of 894

When entering the Set Alarm command set, the MMI will scroll 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 85 outlines the options available in the Set Alarm function.

Table 85

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 will be
	slow to return to service automatically even when the carrier is no longer
	experiencing any errors. The Clear Alarm command will have to 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 will automatically clear alarms after the alarm condition is no longer detected for the corresponding duration period.

Circuit Card Description and Installation