SIP帧的含义
我正在读一本关于无线网络中 IP 语音的书,有时作者正在谈论 SIP 消息中包含的 $k_1$ 帧?我不知道这意味着什么。对于 VoIP 电话,SIP 消息中包含哪些帧?
这本书是
《无线异构网络中的 IP 语音》 H·法蒂 党卫军查克拉博蒂 R·普拉萨德
I was reading a book about voice over IP in wireless networks and at some point the author is talking about $k_1$ frames included within a SIP message? I don't know what that means. In case of VoIP telephony, which frames are included within a SIP message?
The book is
Voice over IP in Wireless Heterogeneous Networks
H. Fathi
S.S. Chakraborty
R. Prasad
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鉴于 SIP 是严格的控制平面协议(与媒体平面相反),这个问题似乎是一个类别错误:SIP 根本不包含任何帧。
或者:SIP 描述了如何启动、更改和拆除“会话”,即由某些其他协议描述的多个实体之间的长期运行关系。通常,SIP 控制会话,SDP 描述会话使用的协议,而其他协议(通常是 RTP)在实体之间发送媒体(语音、文本等)。
Given that SIP is a strictly control plane protocol (as opposed to the media plane), the question seems a category error: SIP doesn't include any frames at all.
Or: SIP describes how to initiate, change, and tear down "sessions", long-running relationships between multiple entities described by some other protocol. Usually, SIP controls the session, SDP describes the protocols used by the session, and other protocols - RTP, typically - send media (voice, text, etc) between the entities.