Patent ID: 8670409

Claim:
A node comprising: communication circuitry and processing circuitry configured to achieve co-existence of single radio voice call continuity solutions in a communication system between: a source cell of a first radio access network that supports packet switched voice; and a target cell of a second radio access network that supports at least circuit switched voice; wherein the processing circuitry is configured to perform bearer splitting by separating voice bearers from non-voice bearers based on information about support for dual transfer mode, packet switched handovers and voice over internet protocol related enhancements in the target cell; wherein if the second radio access network does not support dual transfer mode, packet switched handovers, and voice over internet protocol related enhancements, the processing circuitry is further configured to: transform packet switched handovers to circuit switched handovers, towards circuit switched domain core network of the second radio access network for voice bearers; and perform one of: transfer handover signaling between the node and a packet switched domain core network of the second radio access network for non-voice bearers; or suspend the non-voice bearers; and wherein if the second radio access network supports dual transfer mode, packet switched handovers and voice over internet protocol related enhancements, the processing circuitry is further configured to transfer handover signaling between the node and the packet switched domain core network of the second radio access network for voice bearers and non-voice bearers.