A user equipment (UE) engages in a packet based call between a local party associated with the UE and a remote party. The UE establishes a control plane session of the call with a node of an Internet Protocol multimedia system (IPMS), and establishes a media session of the call managed by the IPMS. The UE determines a local endpoint for terminating an additional media session at the local party, and sends a first message of the control plane session to the IPMS. The first message indicates the local endpoint and indicates that management of the additional media session by the IPMS is not required. The UE receives a second message of the control plane session from the IPMS that indicates a remote endpoint for terminating the additional media session at the remote party. The UE configures the local endpoint for transfer of media with the indicated remote endpoint.