发明公开
EP2866499A1 COMMUNICATION SYSTEM 审中-公开
通讯系统

COMMUNICATION SYSTEM
摘要:
When a voice call is made from or received by UE (100) that is present in both 3G femto area (101) and LTE area (103), line switching for making a voice call or receiving a voice call is performed from MME (112) to P - CSCF (108) by using a predetermined protocol.
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