Specifications

Chapter 5 Monitoring and Diagnostics Installation and Operation Manual
5-18 Performing Diagnostic Tests Optimux-108 Ver. 6.1
³ To run a loopback on an E1 tributary channel:
1. In the Diagnostics Menu (
Figure 5-12 ), set Device Number to the device being
configured (Local or Remote).
2. Choose Channel’s Loop.
The Channel’s Loop Screen (
Figure 5-17 ) appears.
Optimux-108
Diagnostics>Channel’s Loop
Number Loop Number Loop
1 Channel-1 No Loop Channel-2 No Loop
2 Channel-3 No Loop Channel-4 No Loop
1. No Loop
2. LLB
3. RLB
>
Please select item <1 to 3>
ESC-Previous menu; !-Main Menu; &-Exit 1 User(s)
Figure 5-17. E1 Loop Screen
3. Using the Tab key, highlight the Loop field of the channel you want to set.
4. Enter the loopback status you want to set:
 No loop - No loopback on the channel
 LLB - Local loopback on the channel
 RLB - Remote loopback on the channel.
The RLB option appears only if there is a connection to a remote device.
The loopback test begins running immediately after a loopback has been set.
Running Loopbacks on V.35 User Port
The optional V.35 user port supports only the local loopback.
The V.35 local loopback returns the V.35 transmit signal to the output of the
receive path.
Figure 5-18 shows the V.35 local loopback connection.
This test checks the operation of the connections to the equipment attached to
the local V.35 interfaces.
Note