DEFINITY ECS Release 8.2 Maintenance for R8.2csi
555-233-119 Issue 1
April 2000
Maintenance Objects
3-582DS1-BD (DS1 Interface Circuit Pack)
3
Major Alarm Inquiry Test (#142)
The Major alarm raised by a DS1 Interface circ uit pack indic ates that the average
bit error rate on the DS1 facility is greater than 1/1000. The Major Alar m Inquiry
Test is used to determine that the received DS1 bit error rate is g reater than
1/1000. When D4 framing mode is selec ted, the DS1 Interface circu it pack takes
16 seconds to recog nize and report a Major alarm and 16 seconds to recog nize
and report that a Major alarm c ondition is cleared. If ESF framing mode is
selected, the DS1 Interface c ircuit pack takes 1 0 seconds to recogn ize and
report a Major alarm and 10 sec onds to recognize and report that a Major alarm
condition is cleared .
When the DS1 Interface circuit pac k detects a Major alarm, it will send a
MAJOR-ALARM message to the maintenance software. After the maintenanc e
software receives a MAJOR-ALARM message, the Major Alarm Inq uiry Test is
initiated to confirm the Major alarm on the DS1 Interfac e circuit pack. The Inq uiry
Test will be run every 10 minutes until the Major alarm is cleared. The
maintenance software places all t runks on the circuit pac k in the out-of-service
state if the Major alarm persists for more than 20 minutes .
When the Major alarm is cleared, the maintenanc e software restores all trunks on
the circuit pac k to their previous service state before a M ajor alarm occurs.