Adtran 604 User Manual

Total Access 600 Series System Manual

Section 4  User Interface Guide

61200624L1-1B

© 2004 ADTRAN, Inc.

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Identifies the interval (

 or 

) for the listed performance statistics.

 (Errored Second) - For ESF mode, an errored second is defined as a second with one or more Path 

Code Violations (PCVs), or one or more Out of Frame (OOF) defects, or one or more Controlled Slip 
events, or a detected AIS (blue alarm) defect. For D4 (SF) mode, the presence of Bipolar Violations 
(BPVs) also triggers an errored second.

 (Severely Errored Second) - For ESF mode, an 

 is a second with 320 or more PCVs, or one or 

more OOF defects, or a detected AIS defect. For D4 (SF) mode, an

 is a second with one or more 

Framing Error events, or an OOF defect, or at least 1544 Line Code Violations or more.

 (Severely Errored Frame) - An 

 condition occurs when 2 out of 6 consecutive frame bits are in 

error.

 (Frame Slip) - A frame slip is defined as one or more frame bit errors in a one-second interval.

 (Line Code Violation) - A Line Code Violation is defined as a Bipolar Violation (BPV), not including 

the B8ZS code word if B8ZS is employed. The number displayed is 

 events, which is defined as one or 

more BPVs in a one-second interval.

SLP (Slip Error Event) - This occurs when a received frame is either repeated or deleted. A 

 error 

indicates a timing problem.

 (Unavailable Seconds) - When 10 consecutive 

s have been logged, the unit is declared in an 

unavailable state, the 10 

s are cleared, and the Unavailable Seconds count begins to increment starting 

with 10. The unavailable state is cleared when 10 consecutive non-SES seconds have occurred.

Provides statistics for the last 24 hours (in 15 minute windows) on key performance measures as specified 
in ANSI T1.403 and AT&T TR 54016 for each of the T1 ports. Refer to the 

 

performance information for more details on listed statistics.

Clears all statistics collected in the 

 statistics table.