Testing
7-3
7915-A2-GB20-20
September 1997
Remote Loopbacks
When a remote loopback is enabled, the red Loop Bk LED on the front panel
of the remote (far-end) unit lights up and remains lit until the loopback is
disabled. The Loop Bk LED on the local (initiating) unit does not light.
Terminal
97-15259-01
CO
CP
E1 HDSL
7900
7900
Diagnostic
Equipment
E1 HDSL
7900
7900
Diagnostic
Equipment
Loop Bk
LED lights
Figure 7-3.
Remote Loopback Initiated by the CO Unit
Terminal
97-15517
CO
CP
E1 HDSL
7900
7900
E1 HDSL
7900
7900
Diagnostic
Equipment
Diagnostic
Equipment
Loop Bk
LED lights
Figure 7-4.
Remote Loopback Initiated by the CP Unit
