User guide

4-10 Encore Multi-port DSU/CSU User GuideÑJuly, 1997

The fourth report displays the user registers. You can clear these if necessary.

Events in the Performance Reports

The events in the Menu-3 Performance Reports are:

¥ Errored Seconds (ES)

In ESF framing, a second with one or more ESF frame errors or CRC-6 errors.

¥ Unavailable Seconds (US)

In ESF mode, the number of seconds elapsed after 10 consecutive SES events are

received.

¥ Severely Errored Seconds (SES)

In ESF mode, a second during which 320 or more CRC-6 violations or OOF events

have occurred.

¥ Bursty Errored Seconds

In ESF mode, a second during which more than one but less than 320 CRC-6 errors

have occurred.

¥ Loss of Frame Count

In ESF mode, the number or times Loss of Frame is declared.

NOTE: The maximum error count displayed in the performance reports is 65,535. The

actual value may be higher.