mechanism to maintain the above-mentioned service continuity. SR-VCC solution that reflects the direction of network development can be as SAE / LTE widespread deployment of a smooth transition to full-IP networks many operators are more SAE approved the deployment of a transition solution is also a more complete solution. As the IMS side switching time may be more in length will lead to switching process and the interruption of a longer period can not be made to meet the SA1 maximum disruption 300ms needs. This article focuses on analysis and description of SRVCC switching process in particular the switch in the process of disruption. Keywords: SRVCC IMS Service Continue
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