Crocus SHDSL G703.pdf - FTP Directory Listing
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252 Crocus SHDSL G703 Chapter 12 User manual Diagnostic tests 12.2.4 Remote digital loop Initiating the RDL test establishes a digital loop on the remote Crocus SHDSL G703. This loop is compliant to loop 2 as described in the ITU-T recommendation V.54. The loop is situated immediately behind the digital part of the remote Crocus SHDSL G703, schematically represented as follows: Make sure that on the remote Crocus SHDSL G703 the rdlDetect attribute is set to enabled (refer to 6.6 - DTE Interface configuration attributes on page 148). Else it is not possible to initiate an RDL test on the remote. How to use this test Example: Phase Description 1 Start an RDL-ET test on the local Crocus SHDSL G703. ⇒A digital loop is established on the remote Crocus SHDSL G703 and a test pattern is sent down the line. 2 Because the remote side is in a digital loop, the test pattern returns to the local Crocus SHDSL G703. 3 The detector receives this test pattern, and can compare it with the original transmitted pattern. ⇒The quantity of inconsistencies that might exist between the original and the returned pattern could be an indication of the line quality.
Crocus SHDSL G703 Chapter 12 253 User manual Diagnostic tests Clocking during an RDL test The following table shows what happens with the clocking on the Crocus SHDSL G703 when an RDL test is activated: If the … Crocus SHDSL G703 is in … and an RDL test is activated, then it …. local internal clocking mode remains in internal clocking mode. external clocking mode slave receive clocking mode remains in external clocking mode. switches to internal clocking mode. remote any clocking mode switches to slave receive clocking mode.
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<strong>Crocus</strong> <strong>SHDSL</strong> G703 Chapter 12 253<br />
User manual<br />
Diagnostic tests<br />
Clocking during an RDL test<br />
The following table shows what happens with the clocking on the <strong>Crocus</strong> <strong>SHDSL</strong> G703 when an RDL<br />
test is activated:<br />
If the … <strong>Crocus</strong> <strong>SHDSL</strong> G703 is in … and an RDL test is activated,<br />
then it ….<br />
local internal clocking mode remains in internal clocking<br />
mode.<br />
external clocking mode<br />
slave receive clocking mode<br />
remains in external clocking<br />
mode.<br />
switches to internal clocking<br />
mode.<br />
remote any clocking mode switches to slave receive clocking<br />
mode.
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