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9-42 System Cards
Model No.
Running Head
WAN Card User Screens and Settings WAN Card
“Ok to clear performance (y/n)?”
Press “y” to clear the statistics, or “n” to leave the screen contents intact. To view the far-end
information again, press “r” (restore) to send an FDL message and refresh the screen. Table
9-9 lists the actions available from the above screen.
Table 9-9. Far-End Performance Data Screen Actions
ES
An Errored Second (ES) is a second with one or more CRC-6 (ESF) or BPV (D4/D-Frame)
errors, one or more OOFs, or one or more Controlled Slips.
UAS
An Unavailable Second (UAS) is any second during which service is unavailable. An
unavailable signal state is declared after ten consecutive Severely Errored Seconds (SESs) are
logged. An unavailable state is cleared after ten consecutive non-Severely Errored Seconds
are logged. Unavailable Seconds are also accumulated if the card has an out-of-service (OOS)
condition.
SES
A Severely Errored Second (SES) is any second with 320 or more CRC-6 (ESF) or BPV
(D4/D-Frame) errors, or one or more OOF errors.
BES
A Bursty Errored Second (BES) is any second with more than one and fewer than 320 CRC-6
(ESF) or BPV (D4/D-Frame) errors.
Action Function
Refresh Because data is not calculated in real time, the Refresh command must be
used to update the screen with new information.
Clear Clears the Far-End Network Registers display on the local terminal.
PgUp Pages through the performance statistics for the current 15-minute period
and periods 96-1.
PgDn Pages through the performance statistics for the current 15-minute period
and periods 1-96.
Main Returns to the WAN Card Main Screen.