inc. LOS

Description

Loss of signal (LOS) indicates that a Data port does not detect the presence of a valid incoming data signal.

Alarm Data

Value/Meaning

Severity Levels

Critical (CR), Major (MJ), Minor (MN), Not Alarmed (NA), Not Reported (NR)

SA Default: Critical (CR)

NSA Default: Minor (MN)

ASAP Type

Data port

AID Type

Data port

Date

Month/day/year that the condition was detected

Time

Hour:minute:second that the condition was detected

Probable Cause

LOS (Loss of signal)

Effect on Service

SA or NSA

Alarm Entity Type

DATA

Description

inc. LOS

Likely Cause

Disconnected data cable or fiber, or failure or removal of interfacing customer data equipment.

Visible Indication

Lighted CR, MJ, or MN LED on the SYSCTL faceplate (when the severity level is provisioned to Critical, Major, or Minor, respectively) and a flashing Fault LED on the alarmed circuit pack.

Action

Proceed to Procedure 5-65: Clear "inc. LOS" alarm.

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