28181平台对接接口详解1 信令接口1.1平台注册下级平台主动向上级平台注册;注册鉴权信息(用户名和密码)由上级提供;举例说明:下级--->上级REGISTER sip:62025000002000000001@10.130。140.82:7100 SIP/2.0Call-ID: c82dee890ea56d9d332fe4a5dbd2772c@10.129.4。21CSeq: 1 REGISTERFrom: 〈sip:62025202502000000001@10。129。4.21:5080>;tag=5923_661_2647061To: Expires: 3600Via: SIP/2.0/UDP 10。129.4。21:5080;branch=z9hG4bK2647061_661_55795848069639126081Content—Length: 0上级—-—〉下级SIP/2.0 401 UnauthorizedVia: SIP/2.0/UDP 10.129。4。21:5080;branch=z9hG4bK2647061_661_55795848069639126081From: ;tag=316765889Call—ID: c82dee890ea56d9d332fe4a5dbd2772c@10。129。4。21CSeq: 1 REGISTERWWW—Authenticate: Digest realm=”1234”, nonce=”7104983f5477dd30a65167b28553df65", opaque=”f10efb1af3e8a362bcda7465284073ce", algorithm=MD5User-Agent: HikvisionExpires: 3600Content-Length: 0下级-——〉上级REGISTER sip:62025000002000000001@10。130。140。82:7100 SIP/2。0Call—ID: c82dee890ea56d9d332fe4a5dbd2772c@10.129.4。21CSeq: 2 REGISTERFrom: 〈sip:62025202502000000001@10.129.4.21:5080〉;tag=5923_661_2647061To: 〈sip:62025202502000000001@10。129.4。21:5080〉Max-Forwards: 70Contact: 〈sip:62025202502000000001@10.129.4。21:5080〉Via: SIP/2.0/UDP 10.129。4.21:5080;branch=z9hG4bK2647061_661_19459966820285136301Authorization: Digest username=”admin",realm=”1234",nonce="7104983f5477dd30a65167b28553df65”,uri=”sip:62025000002000000001@10。130。140。82:7100”,response="ceb3a346523335fb0c6d66d24a7e77b5”,algorithm=MD5,opaque="f10efb1af3e8a362bcda7465284073ce"Expires: 3600Content-Length: 0上级--—>下级SIP/2。0 200 OKVia: SIP/2。0/UDP 10.129。4.21:5080;branch=z9hG4bK2647061_661_19459966...