User Manual

Table Of Contents
Section 5, User Interface Guide TRACER 4206 System Manual
54 © 2002 ADTRAN, Inc. 612804206L1-1A
>T1B STATUS/CONFIGURATION/LOOPBACK >LOOP/NORMAL STATE > LINE
Activates a loopback at the TRACER 4206 T1B framer towards the wireless link (see Figure 13). Use the
LINE loopback to test data path integrity from the TRACER 4206 unit to the T1 equipment.
Figure 13. T1B Line Loopback
>T1B PERFORMANCE HISTORY
Figure 14 shows the T1B Performance History menu page. The T1B Performance History menu page
displays detailed error statistics for the T1B link (from both the local and remote TRACER 4206 units) in
15 minute increments.
Figure 14. T1B Link Performance History
T1B performance data is presented as Errored Seconds (ES) and Severely Errored Seconds (SES) on the
T1B link. The following events qualify as an ES–AIS, LOS or LOF Alarm Second, a single BPV or
excessive zero event, or a single parity bit. An SES is caused by an AIS, LOS or LOF Alarm Second, or
excessive Bipolar Violations (BPVs) or framed Parity Bit errors causing a line Bit Error Rate (BER) of
10
-6
.
The error count for the most recent 24 hours are recorded and displayed on the right side of the page. The