Informational = "100" ; Trying
/ "180" ; Ringing
/ "181" ; Call Is Being Forwarded
/ "182" ; Queued
/ "183" ; Session Progress
Success = "200" ; OK
/ "202" ; Accepted
Redirection = "300" ; Multiple Choices
/ "301" ; Moved Permanently
/ "302" ; Moved Temporarily
/ "305" ; Use Proxy
/ "380" ; Alternative Service
Client-Error = "400" ; Bad Request
/ "401" ; Unauthorized 呼叫被拒绝-未经授权的
/ "402" ; Payment Required 呼叫被拒绝-付款要求
/ "403" ; Forbidden 呼叫被拒绝、呼出受阻、禁止
/ "404" ; Not Found 没有路线运输网、没有路由的目的地、空号
/ "405" ; Method Not Allowed
/ "406" ; Not Acceptable
/ "407" ; Proxy Authentication Required
/ "408" ; Request Timeout 没有用户响应(请求超时)
/ "410" ; Gone
/ "413" ; Request Entity Too Large
/ "414" ; Request-URI Too Large
/ "415" ; Unsupported Media Type
/ "416" ; Unsupported URI Scheme
/ "420" ; Bad Extension
/ "421" ; Extension Required
/ "423" ; Interval Too Brief
/ "480" ; Temporarily not available 无应答、用户缺席
/ "481" ; Call Leg/Transaction Does Not Exist
/ "482" ; Loop Detected
/ "483" ; Too Many Hops
/ "484" ; Address Incomplete
/ "485" ; Ambiguous
/ "486" ; Busy Here 用户忙
/ "487" ; Request Terminated 发起人取消
/ "488" ; Not Acceptable Here
/ "491" ; Request Pending
/ "493" ; Undecipherable
Server-Error = "500" ; Internal Server Error
/ "501" ; Not Implemented 设备拒绝
/ "502" ; Bad Gateway
/ "503" ; Service Unavailable 正常的电路拥塞
/ "504" ; Server Time-out
/ "505" ; SIP Version not supported
/ "513" ; Message Too Large
Global-Failure = "600" ; Busy Everywhere
/ "603" ; Decline 呼叫被拒绝
/ "604" ; Does not exist anywhere
/ "606" ; Not Acceptable
//recv 487 request - send ack response
/*
SIP/2.0 487 Request Terminated
Via: SIP/2.0/UDP 10.0.0.8:8008;branch=z9hG4bKnashds78404
From: <sip:68899090@10.0.0.8>;tag=00005e114ea110fe
To: <sip:18601936894@114.251.9.36>;tag=2244BCB0-4E6
Contact: <sip:18601936894@114.251.9.36:5060>
Call-ID: 0000-110708168-1319178494-7712@10.0.0.8
CSeq: 471 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER
Content-Length: 0
/*
/*
ACK sip:18601936894@114.251.9.36:5060 SIP/2.0
Via: SIP/2.0/UDP 10.0.0.8:8008;branch=z9hG4bK131917849414
From: <sip:68899090@10.0.0.8>;tag=00005e114ea110fe
To: <sip:18601936894@10.0.0.8>;tag=2244BCB0-4E6
Call-ID: 0000-110708168-1319178494-7712@10.0.0.8
CSeq: 471 ACK
Max-Forwards: 70
Content-Length: 0
*/
/*
SIP/2.0 481 No Such Call
Via: SIP/2.0/UDP 10.0.0.12:5060;branch=z9hG4bKnashds720111115
Via: SIP/2.0/UDP 10.0.0.10:5068;branch=z9hG4bKd281e896c2fa2268
From: <sip:01090080001@10.0.0.12>;tag=00007f964ec22bff
To: <sip:01090011002@10.0.0.12>;tag=abc64ed86df4dbdd
Call-ID: c6b3b6a0bb0a90ae@10.0.0.93
CSeq: 15335 BYE
User-Agent: Grandstream HT487 1.0.6.7
Content-Length: 0
*/
1001657923 - 0803
ims: 183.224.146.197, zhanghao:08763039750,pwd:6630000, server IP:183.224.146.196
123.com
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