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公开(公告)号：US20220141264A1
公开(公告)日：2022-05-05
申请号：US17366371
申请日：2021-07-02
摘要： A method for call addition control in a User Agent (UA) or a call service system is provided. The UA or the call service system receives or initiates a call addition request comprising information of a called party during a call. The UA or the call service system determines whether the called party is already present in the call. The UA or the call service system blocks the call addition request in response to the called party being already present in the call.
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