Instruction manual

8
NOTE
When the Remote Management feature is enabled on the Remote module, the remote
module must either be installed in an unmanaged chassis or in a managed chassis with the
SNMP-management disabled (iMediaChassis chassis with the SNMP management module
removed).
By default this feature is set to Disabled .
This feature can only be selected by setting the DIP Switches manually.
Loopback Testing
The iMcV-DS3/E3/STS includes two loopback test modes: Coax Loopback and
Fiber Loopback.
The following illustrations show the path that a signal takes in each of the
loopback test modes.
Each loopback performs the following:
•
Redirects the incoming signal back out to the origin while continuing to
transmit downstream.
•
Blocks downstream data from arriving on the looped data line.
Loopback testing is useful for troubleshooting problems with network connections
should they occur. Looping received data back onto the transmit path helps
determine whether a connection is still valid. Remote loopback tests isolate
problems on the coax run between an iMcV-DS3/E3/STS module and the
connected device, while local loopback tests can isolate problems on the fiber
connected to the module.