Avaya Business Communications Manager 5.0 - Fault and Performance Management Manuel d'utilisateur télécharger pdf (Page 53)

Telephony metrics monitoring 53

Nortel Business Communications Manager 5.0

Fault and Performance Management

NN40170-701 01.01 Standard

August 2009

The system accumulates three performance parameters:

• errored seconds (ES)

• severely errored seconds (SES)

• unavailable seconds (UAS)

These parameters are defined according to TIA-547A. Errored seconds are

enhanced to include control slip (CS) events. Only near-end performance data

is recorded.

The internal CSU continuously monitors the received signal and detects four

types of transmission defects:

• any active carrier failure alarms (CFA), such as loss of signal (LOS), out

of frame (OOF), alarm indication signal (AIS), and remote alarm indication

(RAI)

• the number of bipolar violations that occurred in the last minute

• any defects that occurred in the last minute, such as loss of signal (LOS),

out of frame (OOF), and alarm indication signal (AIS)

• the number of milliseconds of short-term alarms in the last minute, such

as loss of signal (LOS), out of frame (OOF), alarm indication signal (AIS),

and remote alarm indication (RAI).

A short term alarm is declared when the detected defects persist for tens of

milliseconds. A carrier failure alarm (CFA) is a duration of carrier system

outage.

The criteria for declaring and clearing the alarms is selectable to meet those

in TIA-547A or TR64211. You can also view Carrier Failure Alarms as Core

Telephony Alarms in the Alarm Viewer.

BCM trunk module CSU statistics navigation

• Enabling the internal CSU (page 54)

• Checking the performance statistics (page 54)

• Checking the CSU alarms (page 55)

• Checking carrier failure alarms (page 55)

• Checking bipolar violations (page 56)

• Checking short-term alarms (page 57)

• Checking defects (page 57)

• Viewing CSU alarm history (page 58)

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Avaya Business Communications Manager 5.0 - Fault and Performance Management Manuel d'utilisateur Page 53