Apparatuses, methods, and systems are disclosed for voice session handover. One method (800) includes receiving (802) a handover message including first information indicating a voice handover request to handover a voice session from a first network to a second network. The method (800) includes determining (804) a first network function configured to facilitate communication with the second network. The method (800) includes transmitting (806) a relocation request message to the first network function, wherein the relocation request message includes second information related to the voice handover request. The method (800) includes receiving (808) a relocation response message from the first network function, wherein the relocation response message indicates completion of a voice handover. The method (800) includes transmitting (810) third information related to the voice handover to a third network function, wherein the third network function suspends non-guaranteed bit rate data flows.