https://docs.telcobridges.com/mediawiki/index.php?action=history&feed=atom&title=Call_Detail_Records_Entry_LossCall Detail Records Entry Loss - Revision history2026-06-11T08:46:21ZRevision history for this page on the wikiMediaWiki 1.18.1https://docs.telcobridges.com/mediawiki/index.php?title=Call_Detail_Records_Entry_Loss&diff=12128&oldid=prevAbrassard: moved Text Call Detail Records Entry Loss to Call Detail Records Entry Loss: This page is "generic" to both Text and Radius2012-10-19T20:16:13Z<p>moved <a href="/tbwiki/Text_Call_Detail_Records_Entry_Loss" class="mw-redirect" title="Text Call Detail Records Entry Loss">Text Call Detail Records Entry Loss</a> to <a href="/tbwiki/Call_Detail_Records_Entry_Loss" title="Call Detail Records Entry Loss">Call Detail Records Entry Loss</a>: This page is "generic" to both Text and Radius</p>
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<td colspan='1' style="background-color: white; color:black;">← Older revision</td>
<td colspan='1' style="background-color: white; color:black;">Revision as of 20:16, 19 October 2012</td>
</tr></table>Abrassardhttps://docs.telcobridges.com/mediawiki/index.php?title=Call_Detail_Records_Entry_Loss&diff=12123&oldid=prevAbrassard: Creating this page2012-10-19T20:14:48Z<p>Creating this page</p>
<p><b>New page</b></p><div>It is worth noting that some CDR records can be lost during transition from active to standby following a system fault. Consequently, a CDR analysis script must handle few "corner" cases:<br />
<br />
== A "Start" CDR entry without corresponding "End" entry ==<br />
This happens if a call was terminated during the switchover period.<br />
<br />
==> In that case, billing the call is not possible, the "End" CDR information was lost.<br />
<br />
== A "End" CDR entry without corresponding "Start" entry ==<br />
This happens if a call was answered just before the HA switchover occurred, and the CDR entry was not yet flushed to disk.<br />
<br />
==> In that case, billing can still be done using the "End" entry's "end time" versus "connected time" (unless connected time is 0, meaning the call was never answered)<br />
<br />
== A call with two "End" CDR entries ==<br />
This case may happen after some partial HA switchover of the Toolpack system:<br />
* The CDR generating application (Gateway) remains alive, but looses it's connection with toolpack_engine<br />
* After a timeout, it destroys it's call contexts, and thus writes CDR "End" entries.<br />
* Later, connection with toolpack_engine is re-established, and some calls were still valid and connected<br />
* The Gateway application re-synchronizes with these calls. These call continue normally until they're hung-up<br />
* When hung-up, another "End" CDR entry is written<br />
<br />
==> In that case, billing can be done by using the "end time" of the second CDR entry, minus the "connected time" of the first CDR entry.</div>Abrassard