Each location set in the Admin Portal has a default outgoing caller ID that is used for calls outside of the phone system. If that number needs to be changed to reflect a users direct dial number or another number in the system, the outgoing caller ID can be changed.
Select Profiles from the top menu. Click the appropriate Extension.
Expand the LocationTemplate section.
Enter the following information:
Location Template: Applies common settings for caller-id, call groups, toll allow and billing.
Override Outbound Caller ID Number : Override the Location Template’s Caller ID Number.
You must select a location template or the Caller ID Override will not change.