Type display trunk-group n, where n is the trunk group number.
On Protocol Variations page of the Trunk Group screen, ensure that the Network Call Redirection field is set to n for SIP trunks between Communication Manager and Session Manager.
Save the changes and exit the screen.
Type change system-parameters features. The system displays the Feature-related system parameters screen.
On page 19 of the Feature-related system parameters screen, set the SIP Endpoint Managed Transfer field to y.
