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Navigate to PBX Features->IVR Editor.
Select to View the main IVR, then choose, "Modify Actions".
Select, "Create Action" Action Type = "Alter Caller ID" and click "Next".
Here is a screenshot of the settings we used:
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After saving the settings, the action we've created is now on the list. We just need to move it to the top of the list so the system will prepend the Caller ID Number right away when receiving a call.
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Navigate to System Setup->Outgoing Calls.
Go to "Add New" and choose "Outgoing Call Rule".
Here's how we set ours up (yours may vary):
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Once the rule is added, outbound local calls will go through our analog lines.