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The CallLineNumber variable provides information about line on which the incoming call was answered. The variable is read-only, and should only be needed with multi-line configurations.
Use the CallLineNumber variable to conditionally route a call depending on the line on which the call was received. This gives the effect of multiple phone attendants on multiple lines with a single Call Tree. For example:
If CallLineNumber = "1" Then
GotoNode = "CalledOnLine1"
Else
GotoNode = "CalledOnLine2"
End If
Another use of the CallLineNumber would be having different phone numbers for different sales promotions, then keeping track of the number of calls that come in from each line to determine the effectiveness of the promotions.
Warning: Line numbers may changed when new software and hardware is installed, so be aware of potentially having to modify the Call Tree after a system configuration change.