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EARLY MEDIA AND FORKING IN 3PCC

机译:3PCC中的早期媒体和分支

摘要

A control server initiates a call to a first device. After creating a connection to the device, the control server reverses the direction of the message flow between the device and the control server such that the device becomes the initiator of the call (the caller) and the control server becomes the device that is called (the callee). A connection is also established between the first device, the control server and a second device that is an endpoint for the call. Early media and forking is available to the first device after reversing the direction of the message flow between the first device and the control server and the callee has been contacted. Additionally, information flows between the first device and the second device through the control server as if the first device and the second device were directly connected.
机译:控制服务器启动对第一设备的呼叫。建立与设备的连接后,控制服务器会反转设备与控制服务器之间的消息流方向,以使该设备成为呼叫的发起方(呼叫方),而控制服务器成为被呼叫的设备(被呼叫者)。在第一设备,控制服务器和作为呼叫端点的第二设备之间也建立了连接。在第一设备和控制服务器之间的消息流的方向反向之后,可以联系早期媒体和分叉,并且已联系了被叫方。另外,信息通过控制服务器在第一设备和第二设备之间流动,就像第一设备和第二设备直接连接一样。

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