On the Optional Features screen, verify that the Restrict Call Forward Off Net field is set to Y. To view the screen, type display system-parameters customer-options. Press Enter.
If you set the Restrict Call Forward Off Net field to n, the system will not support the Call Forwarding Off-Net capability. Go to the Avaya Support website at http://support.avaya.com for current documentation and knowledge articles related to assigning Call Forwarding Off-Net capability to a user, or to open a service request.
For a complete description of the System Parameters Customer-Options screen, see Administering Avaya Aura® Communication Manager for more information.