User`s guide

54 XSR User’s Guide
Troubleshooting T1/E1 Links Chapter 4
Configuring T1/E1 Interfaces
Troubleshooting T1/E1 Links
This section describes general procedures for troubleshooting T1/E1 lines on
the XSR. The following flow diagram shows basic steps to perform.
Figure 4 General T1/E1 Troubleshooting Flowchart
Execute the
show controller t1 x
command
Is the line
administratively
down?
No
Yes
No
No
If your T1/E1 controller still
does not function as desired,
contact your service/network provider
Is the line up?
Is the line in
loopback mode?
Are there any
alarms?
Are there
any error
Use the following commands to
bring up the T1/E1 controller:
controller t1 x
no shutdown
Loss of Signal/Loss of Frame
Use the following commands to
turn loopback off:
controller t1 x
no loopback
Alarm analysis
Error Events analysis
No
Yes
Yes
Yes
Yes
- refer to Figure 5
- refer to Figures 6 and 7
- refer to Figure 8
events?