有哪些SIP方法/呼叫和应答?
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有哪些SIP方法/呼叫和应答?

SIP使用方法/呼叫和相应的应答来建立一次通话。

SIP-Methods

SIP 呼叫:

有六种基本呼叫/方法:
邀请 = 建立一次通话
确认 = 确认一个邀请呼叫
再见 = 结束一次通话
取消 = 取消正在建立的一次通话
注册 = 联络用户的地址(服务主机,IP)
选项 = 交流与SIP电话拨打和接受功能的有关信息

SIP应答:

SIP 呼叫由SIP应答来响应,一共有六类:

1xx = 通知性应答,如表示正在拨打的180
2xx = 成功应答
3xx = 转接应答
4xx = 呼叫失败
5xx = 服务器失败
6xx = 全局失败

注意:SIP与HTTP相似,其奇妙之处就在于它简单明了

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