Section 4, User Interface Guide ATLAS 550 System Manual
126 © 2002 ADTRAN, Inc. 61200305L1-1F
MODULES (T1/PRI-2/4) > SIG STATUS
Read security: 5
Read-only field that indicates signaling of all 24 DS0s. The A/B bits for Rx (receive) and Tx (transmit)
DS0s are shown. Dashes display for those DS0s where robbed bit signaling (RBS) is not being transferred
by the ATLAS 550.
MODULES (T1/PRI-2/4) > PERFORMANCE CURRENT
Write security:3; Read security: 5
The performance fields (either current, 15-minute total, or 24-hour total) provide status on key
performance measures as specified in ANSI T1.403 and AT&T TR54016 for the T1/PRI port. Except for
CLR, these fields are all read-only. The monitored parameters include the following:
MODULES (T1/PRI-2/4) > PERFORMANCE 15MIN
Write security:3; Read security: 5
Stores the performance data for the previous 15-minute window. Refer to Modules (T1/PRI-2/4) >
Performance Current for a detailed description of these fields.
MODULES (T1/PRI-2/4) > PERFORMANCE 24HR
Write security:3; Read security: 5
Stores the performance data for the previous 24-hour window. Refer to Modules (T1/PRI-2/4) >
Performance Current for a detailed description of these fields.
PRT Displays the port number
CLR Clears performance information for the selected port
ESErrored Second (ES) is a second with one or more error events OR one or more
Out Of Frame events OR one or more Controlled Slips
BES Bursty Errored Second (BES) is a second with more than one, but less than 320
error events
SES Severely Errored Second (SES) is a second with 320 or more error events OR
one or more Out Of Frame events
SEFS Severely Errored Frame Second is a second that contains four consecutive
errored framing patterns.
LOFC Loss of Frame Count is a count of seconds in which a valid framing pattern
could not be obtained.
CSS Controlled Slip Second
UAS Unavailable Second
LCV Line Code Violation
PCV Path Code Violation
LES Line Errored Second