Specifications

Chapter 5 Monitoring and Diagnostics Installation and Operation Manual
5-14 Performing Diagnostic Tests Optimux-108 Ver. 6.1
Trouble Symptoms Probable Cause Corrective Measures
None of the units
connected to a local
Optimux-108 receive
the remote equipment
External problem Activate the local loopback on Optimux-108. Check that all
the SYNC LOSS and AIS indicators turn OFF, and that the
equipment connected to the local tributaries receives their
own transmissions. If the indicators turn OFF, the problem
is external. Troubleshoot the remote unit, and the uplink
transmission path.
Defective
Optimux-108
Replace the Optimux-108.
Only one of the units
connected to a local
Optimux-108 does not
receive the remote
equipment
Equipment problem Check the equipment connected to the local tributary, and
its cable connections. Check the remote tributary
equipment.
Defective
Optimux-108
Activate the uplink local loopback in the local
Optimux-108. Check that any previously lit alarm indicators
related to the tributary turns OFF.
If the indicator turns OFF, the problem is external; if the
indicators remain lit, replace Optimux-108.
No menus are
available
Incomplete downloading
of new FLASH version
Turn Optimux-108 ON and proceed to download the new
FLASH version again.
5.5 Performing Diagnostic Tests
Optimux-108 has comprehensive test and diagnostics capabilities that include
local and remote loopbacks on the uplink interface and on each E1 tributary link.
A local loopback is also supported on the optional V.35 user port.
Diagnostic loopbacks are configured and monitored using the following menu.
Figure 5-12 displays this menu for an Optimux-108 with a V.35 user interface
port.
Optimux-108
Diagnostics
1. Device Number > (Local)
2. Link Loop type > (No Loop)
3. Link LLB loop timeout (min) [1-255] ... (5)
4. Channel’s Loops [] >
5. V.35 Loop Type (No Loop)
6. Clear all channel’s loops
>
Please select item <1 to 6>
ESC-Previous menu; !-Main Menu; &-Exit 1 User(s)
Figure 5-12. Diagnostics Menu
The available loopback functions are described in the following paragraphs.