| 摘要 |
A control station apparatus is set with a path for performing communication of a plurality of flows with a mobile station apparatus by way of a transfer path of a first access network. When receiving a position register request for performing communication via a transfer path of a second access network, from the mobile station apparatus, the control station apparatus, in response to the position register request, out of flows included in requested communication, switches the transfer path of a flow that is determined not to be permitted to hand over the transfer path, and continues the communication via the first access network, for a flow that is determined not to be permitted to hand over the transfer path. As a result, a mobile communication system or the like is provided, which can perform handover control such as to enable communication of emergency calls via one of the access networks while performing communication of general calls without limitation via the other access network, in accordance with the operator's policy.
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