有哪些SIP方法/呼叫和應答?
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有哪些SIP方法/呼叫和應答?

SIP使用方法/呼叫和相應的應答來建立一次通話。

SIP-Methods

SIP 呼叫:

有六種基本呼叫/方法:

邀請 = 建立一次通話
確認 = 確認一個邀請呼叫
再見 = 結束一次通話
取消 = 取消正在建立的一次通話
註冊 = 聯絡用戶的地址(服務主機,IP)
選項 = 交流與SIP電話撥打和接受功能的有關資訊

SIP應答:

SIP 呼叫由SIP應答來回應,一共有六類:

1xx = 通知性應答,如表示正在撥打的180
2xx = 成功應答
3xx = 轉接應答
4xx = 呼叫失敗
5xx = 伺服器失敗
6xx = 全局失敗

注意:SIP與HTTP相似,其奇妙之處就在於它簡單明瞭

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