T1 AND E1 FIBER MUXES
30
5.3.2 S
ETTING
/R
ESETTING
L
OOPBACKS IN THE
L
OCAL
M
UX
1. In the Configuration screen, choose option 2, Change local interface configuration. The Change Local
Interface Configuration screen appears (see Figure 5-9).
CHANGE LOCAL INTERFACE CONFIGURATION
------------------------------------
NOTE:
To change the configuration of the interface, select it
in the next format: decimal number from 1 to 6,
1 for T1 channel 1, 2 for T1 channel 2, ... , 5 for fiber
optic main link and 6 for fiber optic backup link.
0.
Exit.
1.
Interface.
T1 channel 1
2. Configuration.
Normal
Enter a choice :
Figure 5-9. Change Local Interface Configuration screen.
NOTE
On E1 versions, the screen’s T1 entries are replaced by E1. And although the screen
offers the selection of a fiber optic backup link, this option is available only if the
optional dual fiber link board is installed.
2. Choose option 1, Interface.
3. Select a digit between 1 and 4 to set/reset a local loopback in one of the T1 or E1 interfaces. Select 5 to
set/reset a local loopback for the fiber optic link. On muxes with the optional dual fiber link board installed,
select 6 to set/reset a local loopback for the fiber optic backup link.
See
Chapter 6
for definitions of local T1 or E1 and fiber optic link local loopbacks in the local mux. The
fiber optic link local loopback applies to the active link only.
4. Choose 2, Configuration, and type
1
to set a loopback. Type
0
to reset a loopback.
5. Choose 0, Exit, to exit to the Configuration screen.
5.3.3 S
ETTING
/R
ESETTING
L
OOPBACKS IN THE
R
EMOTE
M
UX
1. In the Configuration screen, choose option 3, Change remote interface configuration. The Change Remote
Interface Configuration screen appears (see Figure 5-10).
2. Choose option 1, Interface.