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990DSL
Users Guide
ADSL Verify Test
The ADSL Verify Test is a single-ended test of an active ADSL line to
determine the presence of both the C.O. DSLAM and customer modem, and to
determine the approximate bit-rate capability of the line. It is comprised of a
test looking toward the C.O. DSLAM (
) with the customer modem
ATU-C Test
disconnected, and a test looking toward the customer modem (
)
ATU-R Test
with the DSLAM disconnected.
This test may either be performed at installation of the DSLAM or modem to
verify service turn-up, or as a diagnostic tool to help pinpoint the root problem
during ADSL trouble calls on existing services.
The ATU-C test should be run at the customer's location in order to get
meaningful bit-rate information over the entire loop. The ATU-R test can be
performed at either the DSLAM or customer's location, as it is used only to
verify operation of the modem and not to obtain bit-rate information.
Setting up an ADSL Verify Test
There are no setups required for this test. The test is not modem-vendor
specific and works equally well on all network equipment conforming to ANSI
TI.413.
Running an ADSL Verify Test
From the tester
menu (Figure. 3-2), select
and press
Main
ADSL Verify Test
L. The ATU-C Test / ATU-R Test option screen is displayed.
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