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1. 发明授权

US08774178B2 Call transfer with multiple application servers in session initiation protocol-based network 有权
标题翻译：在基于会话启动协议的网络中使用多个应用服务器进行呼叫转移
公开(公告)号：US08774178B2
公开(公告)日：2014-07-08
申请号：US11830326
申请日：2007-07-30
申请人： Isaac Jian Liu , Ivy Qingfang Meng , Alexander Aihao Yin , Chun Yu Yu
发明人： Isaac Jian Liu , Ivy Qingfang Meng , Alexander Aihao Yin , Chun Yu Yu
IPC分类号： H04L12/28 , H04J1/16
CPC分类号： H04L65/1069 , H04L65/1006 , H04L65/1016 , H04L65/1093 , H04M3/58
摘要： Call transfer techniques between multiple application servers in a SIP-based network or other type of communication network are disclosed. In accordance with one example technique of the invention, it is assumed that a first call is established between a first user device and a second user device via a first server, and the second user device, wishing to initiate a call transfer to a third user device, establishes a second call between itself and the third user device via a second server. Thus, the technique includes the following steps. Upon the first server receiving a call transfer request from the second user device such that the first user device and the third user device can communicate, it is determined whether the first server has information that matches the second call. Upon determining that the first server does not have information matching the second call, a message is sent from the first server to the second server so as to obtain information from the third device such that the first user device and the third user device can communicate via the first server. The message sent from the first server to the second server indicates that the call transfer request was referred by the second user device.
摘要翻译：公开了基于SIP的网络或其他类型的通信网络中的多个应用服务器之间的呼叫转移技术。根据本发明的一个示例性技术，假设经由第一服务器在第一用户设备和第二用户设备之间建立第一呼叫，并且第二用户设备希望发起到第三用户的呼叫转移设备，经由第二服务器在其与第三用户设备之间建立第二呼叫。因此，该技术包括以下步骤。当第一服务器从第二用户设备接收到呼叫转移请求使得第一用户设备和第三用户设备可以通信时，确定第一服务器是否具有与第二呼叫匹配的信息。在确定第一服务器不具有与第二呼叫匹配的信息时，将消息从第一服务器发送到第二服务器，以便从第三设备获得信息，使得第一用户设备和第三用户设备可以经由第一台服务器。从第一服务器发送到第二服务器的消息指示呼叫转移请求被第二用户设备引用。

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