How to forward answered calls to External telephone number while doing Interactive Voice Broadcasting Campaign / Press 1 Campaign ?

How to transfer call to external number instead of extension while doing Interactive Voice Broadcasting Campaign / Press 1 Campaign ?

1. Click Administration => Agents / Extensions
2, Click on Edit link of any extension at right hand side
3. Select "External Call Centre" at "forwarding" tab.
4. Enter IP Address and other information of Trunk needed to dial external Number
5. Enter External number with all prefixes needed
6. Assign to admin / user