Terminating ISDN calls return a Q.850 Cause Code when they end. We can use these codes to determine whether or not to reroute the call to another signalling group. A Cause Code Reroute table contains one or more Q.850 Cause Codes which, when matched, trigger a reroute. To use a table created here, select it from the Cause Code Reroute field in a Call Routing Table entry.
In the left navigation pane, go to Telephony Mapping Tables > Cause Code Reroutes.
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To delete an entry, select the checkbox next to the entry and then click the Delete () icon.