NV-600LI/RI Managed Industrial Grade VDSL2 CO/CPE Router USER’S MANUAL Ver. A4
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The screen contains the following details:
Loop Back
Setting
Description
Channel No.
To which bearer channel number shall the settings apply?
Channel 0
Loop
System loop or line side loop
State
Activate or deactivate loop back within the transmission convergence layer
•
Click APPLY at any time during configuration to save the information that you have entered.
•
Click CANCEL to exit from this page without saving the changes.
Example applications(
Reference only
):
Performing transmission tests of access lines from the serving switching center, which usually does not require the
assistance of personnel at the served terminal.
Testing between stations (not necessarily adjacent) where in two lines are used, with the test being done at one station and
the two lines interconnected at the distant station. Commonly called loop around when the interconnecting circuit is
accessed by dialing.
A patch cable, applied manually or automatically, remotely or locally, that facilitates a loop-back test.
A communication channel with only one endpoint. Any message transmitted through such a channel is immediately
received by the same channel.
