8.2
Performance Monitoring Counters
The automac Performance Monitoring (PM) funcon aids in the maintenance, operaons, and trouble clearing
of the network-side facility. The PM funcons refer to in-service monitoring of equipment condions and
transmission quality using PM parameter data registers. The PM data is collected for crical equipment as well as
for facility path, secon, and line parameters.
The PM funcons accumulate data for specic performance parameters. These parameters enable service
providers to oer the following features:
■ Detecon of gradual increase in error rate and correcon of certain maintenance problems before service is
aected
■ Guaranteed service to end users by using PM data as evidence of high signal-path quality
The PM data is stored in the following registers using two dierent protocols:
■ Cumulave registers, which have no ming component. Generally, these registers hold up to 2
64
–1 counts
and roll back to a value of 1 when the maximum count is exceeded.
■ Timed registers, somemes referred to as binned registers, of which two types exist:
• 15-minute registers that are automacally inialized on the quarter hour. Thirty-two 15-minute registers
provide history storage for the previous 8 hours of PM counts.
• 1-day registers that are automacally inialized every 24 hours (typically at midnight). Thirty-two 1-day
registers provide history storage for the previous 32 days acvity.
System Maintenance
Performance Monitoring Counters
345
Release 19.1.1 · Issue 1.1, May 2021
Fujitsu and Fujitsu Customer Use Only