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Appendix F: Using the LineStatus Utility
iSPAN PRI PCI ISDN Users Guide 113
Statistics Parameters
The following statistics fields display performance parameters
accumulated during the last 24 hours the interface is running:
Parameter Meaning
Uptime Length of time that the interface has been running.
UnAvailable
Seconds
(Also known as UAS). Number of seconds that the
interface is 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
Seconds
(Also known as ES). Number of seconds during which any
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 ESF signals, number of seconds
during which any of the following have existed:
• 320 or more PCVs
• One or more LOFs
• Detected AIS defect
CSs are not included in this parameter.