150-388-125-01, Revision 01
Maintenance
HLU-388 List 2E
September 15, 1998
27
Initiating Loopbacks
To send one of the available loopbacks, press the appropriate letter in the Loopback Menu. The following prompt
appears:
PLEASE WAIT................
A series of dots moves from left to right indicating that the command has been issued. When this process
completes, the system returns to the Maintenance Terminal Main Menu. The selected loopback four-letter
designation now appears in the Loopback Mode field in the Maintenance Terminal Main Menu (see
Figure 14
in
which an NLOC loopback is in progress). The loopback continues to cycle in the system depending upon your
Loopback Timeout setting.
Figure 14.
NLOC Loopback Mode in the Maintenance Terminal Main Menu
Disable Loopbacks
The Disable Loopbacks option allows you to disable (cancel) any of the loopbacks listed in the screen. To disable
loopbacks, press
in the Loopback Menu. The following prompt appears:
PLEASE WAIT................
A series of dots moves from left to right indicating that the command has been issued. When this process
completes, the system returns to the Maintenance Terminal Main Menu in which the Loopback Mode will display
as None.
The Loopback Menu screen is also available at the HRU connected to the HLU-388, thus
allowing all HiGain System loopbacks to be initiated from either end of the circuit.
HI-GAIN HLU-388 MAINTENANCE TERMINAL MAIN MENU (ver V5.1L-5)
CIRCUIT ID#:
A. VIEW SPAN STATUS
B. SET CLOCK
C. SYSTEM SETTINGS
D. LOOPBACK MODE: NLOC
E. VIEW PERFORMANCE DATA
F. VIEW PERFORMANCE HISTORY
G. VIEW ALARM HISTORY
H. ENTER CIRCUIT ID #
$
