Glossary H

The terminologies are defined below.

Glossary

Terminology

Meaning

Half duplex

On the communication link, only one party can send data, while the other party can only receive data.

History alarm

History alarm is the alarm that has stopped and is acknowledged.

History PM data

For each performance parameter of each performance monitoring entity, the NE provides two types of registers:(1) 15-minute register: accumulating the performance event data within 15 minutes; (2) 24-hour register: accumulating the performance event data within 24 hours. Each type of register can be further divided as follows:(2) Current register: The current 15-minute register or current 24-hour register (only one for each) is applied to collect the performance data in the current monitoring period. It changes within the monitor period. (2) History register: The 15-minute history register (16 pieces) or 24-hour history register (6 pieces) is a first-in-first-out queue. If the history registers are full, the register storing the earliest history data will be overwritten. The performance data stored in the history register and the auto-report performance data saved on the NM are called history performance data in a unified way.

Hotline phone

The hotline phone number can be called immediately by picking up only, but not by dialing.


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