Troubleshooting guide

Section 5, User Interface Guide - UIG-535, STS-1 Loopbacks
61186003L1-1D 5-101
Figure 5-71. Line Bert Test
STS-1 LOOPBACKS
After selecting STS-1 LOOPBACKS from the MX2820 Loopbacks Menu, the menu in Figure 5-72
appears. The sections following the figure provide descriptions and illustrations of the testing
options.
Select the
DATA MODE option to terminate a test in progress.
Figure 5-72. STS-1 Loopback Menu
STS-1
MAPPER
T1/E1 LIU
(1 of 28)
T1/E1 LIU
(28 of 28)
STS-1
LIU
CODEC
(1 of 28)
CODEC
(28 of 28)
BERT
CHECKER
BERT
GENERATOR
Shelf: 1 Slot: 4A ADTRAN MX2820 System 04/15/04 15:44
Unacknowledged Alarms: NONE TID: HTVLALEXD16
STS-1 Loopbacks
STS-1: Data Mode
1 - Data Mode
2 - Line
3 - Digital
Selection: '?' - System Help Screen