Nortel 5399 User Manual page 49

Book A
Model 5399 Remote Access Concentrator Network Administrator's Guide for UNIX
Table B-14. Fields in the stats –T Command Display (Continued)
Field Description
Severely A Severely Errored Second is a second with 320 or more
Errored CRC error events or one or more OOFs.
Seconds
Unavailable Unavailable Seconds is a count of 1-second intervals
Seconds during which service is unavailable.
Bursty Errored A Bursty Errored Second (BES) is a second with more
Seconds than one, but less than 320, CRC error events.
Loss of Frame Loss of Frame Count is the number of times that frame
Count synchronization has been lost.
Controlled A Controlled Slip Second is a second with one or more
Slip Seconds Controlled Slips. A Controlled Slip is the occurrence of a
replication or deletion of a DS1 frame by the receiving
terminal.
For example, the display that reports statistics for the first six
asynchronous ports looks like this:
Chapter 1 Network Administration
A-45