ADC AVIDIA SWD4573I1 - Manual (Page 592)

Initiating Communication Path Loopbacks
566 Avidia System Configuration and Management User Manual
DS1 Loopbacks
Initiate DS1 loopbacks from the DS1 Configuration window.
1 In the Loopback box, select the loopback type you want to initiate, either Payload , Line ,
Remote , or Local . The table on page 564 describes these loopbacks.
2 Click Set to initiate the loopback.
To disable the loopback and return the port to normal service, set the Loopback box to None and
click Set .