User's Manual

Chapter 5 Diagnostics and Troubleshooting WinLink1000 Installation and Operation Manual
inband command sent from a management station connected to the
local unit.
Testi ng
Equipment
Management
Station
E1
Interface
/T1 E1
Interface
/T1
Local ODU
Inband Loopback
Activation Command
Remote ODU
Figure 5-10. Remote External Loopback
Local Internal Loopback
Local WinLink1000 can be set to close an internal loopback to test
connection between the local and remote units, remote E1/T1 port and
its connection to the remote side user equipment. In this mode, data
coming from the remote user equipment is looped back to it (see
Figure 5-11 ). This loopback is initiated by an inband command sent
from a management station connected to the local unit.
Tes ti ng
Equipment
Management
Station
Local ODU
Inband Loopback
Activation Command
Remote ODU
E1/T1
Interface
E1
Interface
/T1
Figure 5-11. Local Internal Loopback
5.6 Troubleshooting
Use Table 5-6 and Table 5-6 to diagnose any faults in the system.
Table 5-5. Troubleshooting
Symptom Remedy
No power Verify that AC power is connected to the IDU.
5-16 Troubleshooting