User's Manual

WinLink User and Installation Guide Version 1.795 6-99
Testing
Equipment
Management
Station
E1
Interface
/T1
Local ODU
Figure 6-3: Local External Loopback
Remote Internal Loopback
Remote internal loopback can be set to an internal loopback to test
connection between the local and remote units, the local E1/T1 port
and its connection to the local side user equipment. In this mode, data
coming from the local unit is looped back to it. This loopback is
initiated in band from a management station connected to the local
unit.
Management
Station
E1/T1
Interface
E1
Interface
/T1
Testing
Equipment
Remote ODU Local ODU
Figure 6-4: Remote Internal Loopback