As the 3GPP began looking at ways to implement IP in their networks, they found a need to standardize first of all on one implement standard network common protocol for call and session control.
当3GPP开始需求在他们的网络中实现IP的方法时，他们发方法开始需求觉首先要对呼叫和会话控制中单一共有的协议进行标准化标准化进行会话。
The Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol for creating, modifying and terminating sessions with one or more participants.
SIP是一种应用层控制信令协议，用于创建、修改和结束与一个或多个参与者的会话。
The session Initiation protocol (SIP) is an application-layer control protocol for creating, modifying and terminating sessions among two or more parties.
会话发起协议(SIP)是IP网络应用层的控制协议，用于建立、修改和终止两个或多个参与者之间的会话。
To support the multimedia operation and supply the function such as call building and session control, the signal protocol is absolutely necessarily.
为了支持多媒体业务，提供呼叫建立、会话控制、接纳控制等功能的信令协议必不可少。
The session Initiation protocol (SIP) is an application-layer control (signaling) protocol distributed by IETF for creating, modifying, and terminating sessions with one or more participants.
会话启动协议是由IETF提出的一个应用层的信令控制协议，用来创建、修改和终结一个或多个参加者参加的会话进程。
The session Initiation protocol (SIP) is an application-layer control (signaling) protocol distributed by IETF for creating, modifying and terminating sessions with one or more participants.
会话启动协议是由IETF提出的一个应用层的信令控制协议，用来创建、修改和终止一个或多个参加者参加的会话进程。
The session Initiation protocol (SIP) is an application-layer control (signaling) protocol distributed by IETF for creating, modifying and terminating sessions with one or more participants.
会话启动协议是由IETF提出的一个应用层的信令控制协议，用来创建、修改和终止一个或多个参加者参加的会话进程。
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