Matrix Telecom SARVAM UMG System Manual page 689

• Click the tab of the desired T1E1 port.
• Whenever, any alarm is detected by the system, it will increment the counter for that alarm and display its
status as Present. When that alarm is cleared, the system will change the status of that alarm to Absent.
By default, the value of each counter is 0. The maximum value for each counter is 255. Once the counter
value reaches 255, the system will continue to display this value until you clear it.
• Click the Clear Alarms/Counters button to clear the counter value. You must clear the counter value, if
you change any settings of the system or the line connection.
The page refreshes automatically after every 10 seconds to display the new status.
Performance Monitoring Counter
All errors do not generate an alarm. A few severe errors generate alarms while for others, error counters are
supported by the ISDN chip in the system hardware. This error counter is used for Performance Monitoring.
Various Error Counters supported by the ISDN chip in E1 Mode are given in the table below.
Counter
Frame Alignment Signal
Error Counter
Far End Block Error
Counter
CRC-4 Error Counter
Line Code Violation
Positive Slip Counter
683
This counter is incremented on receipt of each errored FAS.
This counter is incremented when either E1 or E2 bit is set in the transmit
frame.
This counter is incremented when the received frame has CRC-4 errors.
This counter is incremented when a line code violation error occurs.
This counter is incremented every time a positive slip occurs.
Meaning
Matrix SARVAM UMG System Manual