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4.7 Test
This chapter introduces you about how to make single-ended loop testing (SELT) and XDL-2420R lamp testing.
4.7.1 SELT Single Port
The single-ended loop testing (SELT), like metallic testing from POTS world, is an automated way of testing a DSL loop from
one end to the line, either from the central office (CO) or, less likely from the subscriber's end. Unlike dual-ended loop testing
(DELT), where someone must install some sort of test device at customer's end of the line, SELT doesn't require a technician or
any equipment at the subscriber site.
This section is to introduce you how to configure single-ended loop test configuration. The screen in
The page includes the following fields:
Object
Select Port
Acton
: Save configuration.
Figure 4-7-1: SELT Single Port Page Screenshot
Description
Allows user to select xDSL port to show the port statistics.
It offers you None, Stop and Start options to make xDSL line testing
None: do anything. (Default)
Stop: Stop to make loop testing to indicate xDSL port.
Start: Start to make loop testing to indicate xDSL port.
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Figure 4-7-1
appears.
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