Testing
9-5
7900-A2-GB20-00
March 1998
Remote Loopback Test
When a remote loopback is enabled, the red Loop Bk LED on the front panel of
remote-end unit (CO or CP) lights up and remains lit until the loopback is
disabled. The loopback LED on the initiating unit does not light. A message
appears on the remote end unit reporting that it has been put into loopback.
Terminal
97-15515
CO
CP
E1 HDSL
7900
7900
Diagnostic
Equipment
E1 HDSL
7900
7900
Diagnostic
Equipment
Loop Bk
LED lights
AIS
AIS = Alarm Indication Signal
Figure 9-3.
Remote Loopback, Initiated at the CO Unit
VT100 Terminal
or Emulator
97-15629
CO
CP
E1 HDSL
7900
7900
Diagnostic
Equipment
Diagnostic
Equipment
Loop Bk
LED Lights
Nest
Figure 9-4.
Remote Loopback, Initiated at the CP Unit
Summary of Contents for HOTWIRE 7900
Page 8: ...Contents iv 7900 A2 GB20 00 March 1998 This page intentionally left blank ...
Page 28: ...System Terminal Interface 4 6 7900 A2 GB20 00 March 1998 This page intentionally left blank ...
Page 72: ...Testing 9 12 7900 A2 GB20 00 March 1998 This page intentionally left blank ...
Page 82: ...Glossary GL 4 7900 A2 GB20 00 March 1998 This page intentionally left blank ...