https://docs.telcobridges.com/mediawiki/index.php?action=history&feed=atom&title=Parameter%3A_LoopbackParameter: Loopback - Revision history2026-05-16T22:48:30ZRevision history for this page on the wikiMediaWiki 1.18.1https://docs.telcobridges.com/mediawiki/index.php?title=Parameter:_Loopback&diff=9036&oldid=prevLuc Morissette: Revamp of the page2011-05-10T13:06:24Z<p>Revamp of the page</p>
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<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values:</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values:  </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">* </del>NONE <del class="diffchange diffchange-inline">(</del>Normal <del class="diffchange diffchange-inline">operation)</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">{| cellspacing="1" cellpadding="1" border="2" style="width: 829px; height: 185px;"</ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">* </del>LINE <del class="diffchange diffchange-inline">(</del>Analog line <del class="diffchange diffchange-inline">loopback</del>. The clock and data recovered from the line inputs are routed back to the line outputs of the analog transceiver bypassing the framer modules<del class="diffchange diffchange-inline">)</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">|-</ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">* </del>PAYLOAD <del class="diffchange diffchange-inline">(</del>Digital <del class="diffchange diffchange-inline">line loopback. This loopback </del>is <del class="diffchange diffchange-inline">performed after </del>the <del class="diffchange diffchange-inline">framer/deframer</del>. The <del class="diffchange diffchange-inline">bit stream is looped back </del>from the <del class="diffchange diffchange-inline">deframer (</del>line <del class="diffchange diffchange-inline">input) </del>to the framer <del class="diffchange diffchange-inline">(</del>line <del class="diffchange diffchange-inline">output)</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">! scope="col" | Loopback Type<br> </ins></div></td></tr>
<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">* LOS </del>(<del class="diffchange diffchange-inline">LS out of service</del>)</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">! scope="col" | Description<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">! scope="col" | Behavior<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">! scope="col" | When shoud we use it?<br></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">|-</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| </ins>NONE<ins class="diffchange diffchange-inline"><br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| </ins>Normal <ins class="diffchange diffchange-inline">Operation<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| All traffic is received and sent on the line<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| Always<br></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">|-</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| </ins>LINE<ins class="diffchange diffchange-inline"><br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| </ins>Analog <ins class="diffchange diffchange-inline">Line Loopback<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| All received traffic is re-routed on the transmit </ins>line. The clock and data recovered from the line inputs are routed back to the line outputs of the analog transceiver bypassing the framer modules<ins class="diffchange diffchange-inline"><br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| First step in testing a physical connection<br></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">|-</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| </ins>PAYLOAD<ins class="diffchange diffchange-inline"><br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| </ins>Digital <ins class="diffchange diffchange-inline">Line Loopback<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| All received traffic </ins>is <ins class="diffchange diffchange-inline">re-routed on </ins>the <ins class="diffchange diffchange-inline">transmit line</ins>.The <ins class="diffchange diffchange-inline">clock and data recovered </ins>from the line <ins class="diffchange diffchange-inline">inputs are routed back </ins>to the <ins class="diffchange diffchange-inline">line outputs after the deframer/</ins>framer<ins class="diffchange diffchange-inline">.<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| Second step in testing a physical connection. This tests the framer configuration.<br></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">|-</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| GENERATE_LOS<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| Generate Loss of Signal<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| This forces the transmit </ins>line <ins class="diffchange diffchange-inline">to stop sending<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| This is the second-best thing to disconnecting the line interface physically</ins>.<ins class="diffchange diffchange-inline"><br></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">|-</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| LOCAL<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| Local Loopback<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| All received traffic is dropped. The traffic sent is re-routed internally. <br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">| Never. Used for internal testing only.<br></ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">|}</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline"><br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div> </div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">To change the Loopback parameter from the Web Portal: </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline"><pre>Line Interfaces -&gt; Line Services </ins>(<ins class="diffchange diffchange-inline">Choose</ins>) <ins class="diffchange diffchange-inline">-&gt; Status Tab -&gt; Loopback -&gt; Apply States</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline"></pre> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">To see the status from the Web portal:<br> </ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline"><pre>Line Interfaces -&gt; Status tab</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline"></pre> </ins></div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Parameters]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Parameters]]</div></td></tr>
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</table>Luc Morissettehttps://docs.telcobridges.com/mediawiki/index.php?title=Parameter:_Loopback&diff=8688&oldid=prevLucas Trottier at 08:13, 15 February 20112011-02-15T08:13:31Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values:</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values:</div></td></tr>
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<tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>* NONE (<del class="diffchange diffchange-inline">LS operational</del>)</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>* NONE (<ins class="diffchange diffchange-inline">Normal operation</ins>)</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* LINE (Analog line loopback. The clock and data recovered from the line inputs are routed back to the line outputs of the analog transceiver bypassing the framer modules)</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">* PAYLOAD (Digital line loopback. This loopback is performed after the framer/deframer. The bit stream is looped back from the deframer (line input) to the framer (line output).</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* LOS (LS out of service)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* LOS (LS out of service)</div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Parameters]]</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Parameters]]</div></td></tr>
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</table>Lucas Trottierhttps://docs.telcobridges.com/mediawiki/index.php?title=Parameter:_Loopback&diff=7755&oldid=prevAllyntree at 15:56, 23 August 20102010-08-23T15:56:34Z<p></p>
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<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* LOS (LS out of service)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>* LOS (LS out of service)</div></td></tr>
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</table>Allyntreehttps://docs.telcobridges.com/mediawiki/index.php?title=Parameter:_Loopback&diff=7720&oldid=prevAllyntree: Created page with 'The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the f…'2010-08-18T15:50:19Z<p>Created page with 'The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the f…'</p>
<p><b>New page</b></p><div>The Loopback parameter is used to set the loopback state of a line service. Values for this parameter are selected from a drop-down list. The Loopback parameter can take on the following values:<br />
<br />
* NONE (LS operational)<br />
* LOS (LS out of service)</div>Allyntree