Command Reference Guide

312 ● t1 bert 3Com Router 5000 Family and Router 6000 Family
Command Reference
t1 bert
Purpose Use the t1 bert command to start a BERT test on the specified T1 line on the CT3
interface.
Use the undo t1 bert command to stop the BERT test running on the specified T1
line on the CT3 interface.
Syntax t1 line-number bert pattern { 2^11 | 2^15 | 2^20 | 2^23 | qrss } time
number [ unframed ]
undo t1 line-number bert
Parameters line-number
T1 line number. Valid values are 1 to 28.
pattern
Sets a BERT pattern, which could be 2^11, 2^15,
2^20, 2^23, or QRSS.
2^11
Two to eleventh power, length of the transmitted BERT
pattern in bits.
2^15
Two to the fifteenth power, length of the transmitted
BERT pattern in bits.
2^20
Two to the twentieth power, length of the transmitted
BERT pattern in bits.
2^23
Two to the twenty third power, length of the
transmitted BERT pattern in bits.
qrss
Two to the twentieth power, length of the transmitted
BERT pattern in bits. In this pattern, the presence of 14
consecutive zeros is not allowed.
time number
Sets the duration of a BERT test. Valid values are 1 to
1440 minutes.
unframed
The test pattern covers the overhead bits of the frame.
Example Run a 10-minute QRSS BERT test on T1 line 1 on CT3 interface 1/0/0.
[3Com -T3 1/0/0] t1 1 bert pattern qrss time 10
Stop the BERT test running on T1 line on CT3 interface 1/0/0.
[3Com -T3 1/0/0] undo t1 1 bert
View This command can be used in the following views:
■ CT3 Interface view