T1 AND E1 FIBER MUXES
32
To select the fiber optic link redundancy mode on muxes with the optional dual fiber link board installed:
1. In the Configuration screen, choose option 4, Special configuration actions. The Special Actions menu
screen appears (see Figure 5-11).
SPECIAL ACTIONS MENU
--------------------
0. Exit.
1.
Select fiber optic link.
Normal
2.
Remote loop configuration.
Normal
Enter a choice :
Figure 5-11. Special Actions menu.
2. Choose 1, Select fiber optic link, and select one of the following options:
Number
Option
To
0*
Normal
Enable fiber link redundancy in case main link fails.
1
Main
Force the main link as the active link.
2*
Backup
Force the backup link as the active link.
* The Normal and Backup options are only available on muxes that have the optional dual fiber link board
installed.
5.3.5 S
ETTING
/R
ESETTING THE
T1
OR
E1 R
EMOTE
L
OOPBACK
1. In the Configuration screen, choose option 4, Special configuration actions. The Special Actions menu
appears (see Figure 5-11).
2. Choose 2, Remote loop configuration, and type
1
to set the loopback or type
0
to reset the loopback. See
Chapter 6
for the definitions of the T1 or E1 remote loopback.
3. Choose 0, Exit, to return to the Configuration screen.
5.3.6 R
ESETTING TO THE
D
EFAULT
C
ONFIGURATION
1. In the Configuration screen, choose option 5, Reset to default configuration. The Reset to Default
Configuration screen appears (see Figure 5-12).
NOTE
Resetting to the default configuration restores the system to its normal transmission
path (no loops) and to the Normal redundancy mode, as defined in Section 5.3.4.