Appendix E: Line Status Utility

Statistics Parameters

The following statistics fields display performance parameters accumulated during the last 24 hours the interface was running:

Parameter

Meaning

 

 

Uptime

Length of time that the interface has been running.

 

 

Unavailable

(Also known as UAS.) Number of seconds that the

Seconds

interface has been unavailable. The DS1 interface is

 

considered unavailable from the onset of 10 contiguous

 

SESs, or the onset of the condition leading to a failure.

 

 

Errored

(Also known as ES.) Number of seconds during which any

Seconds

of the following have existed:

 

One or more PCV

 

One or more LOF

 

One or more CS

 

Detected AIS defect

Severely

Errored

Seconds

(Also known as SES.) For SES signals, number of seconds during which any of the following existed:

320 or more PCVs

One or more LOFs

Detected AIS defect

CSs are not included in this parameter.

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