关于LiveGBS GB28181流媒体服务器的部署详见 https://www.liveqing.com/docs/download/LiveGBS.html。通过LiveGBS流媒体服务可以实现GB28181接入摄像头、硬盘录像机、其他支持GB28181的视频平台，实现网页无插件直播。
如下是GB28181注册成功后设备状态查询的信令分析：
1. 发送设备状态查询命令（服务>>设备）
MESSAGE sip:[email protected] SIP/2.0 Via: SIP/2.0/UDP 192.168.2.135:5060;rport;branch=z9hG4bK847293060 From: <sip:[email protected]>;tag=603293060 To: <sip:[email protected]> Call-ID: 521293060 CSeq: 15 MESSAGE Max-Forwards: 70 User-Agent: LiveQing Content-Length: 167 Content-Type: Application/MANSCDP+xml <?xml version="1.0" encoding="UTF-8"?> <Query> <CmdType>DeviceStatus</CmdType> <SN>800293061</SN> <deviceid>34020000001320000264</deviceid> </Query>
2. 设备端响应请求 （设备>>服务）
SIP/2.0 200 OK Via: SIP/2.0/UDP 192.168.2.135:5060;rport=5060;branch=z9hG4bK847293060 From: <sip:[email protected]>;tag=603293060 To: <sip:[email protected]>;tag=1918280724 Call-ID: 521293060 CSeq: 15 MESSAGE User-Agent: IP Camera Content-Length: 0
3. 设备上传状态信息 （设备>>服务）
MESSAGE sip:[email protected] SIP/2.0 Via: SIP/2.0/UDP 192.168.2.64:5060;rport=5060;received=192.168.2.64;branch=z9hG4bK535315480 From: <sip:[email protected]>;tag=1034018613 To: <sip:[email protected]> Call-ID: 1544085115 CSeq: 20 MESSAGE Content-Type: Application/MANSCDP+xml Max-Forwards: 70 User-Agent: IP Camera Content-Length: 342 <?xml version="1.0" encoding="UTF-8"?> <Response> <CmdType>DeviceStatus</CmdType> <SN>800293061</SN> <deviceid>34020000001320000264</deviceid> <Result>OK</Result> <Online>ONLINE</Online> <Status>OK</Status> <DeviceTime>2019-08-07T13:56:27</DeviceTime> <Alarmstatus Num="0"> </Alarmstatus> <Encode>ON</Encode> <Record>OFF</Record> </Response>
4. 服务端响应 （服务>>设备）
SIP/2.0 200 OK Via: SIP/2.0/UDP 192.168.2.64:5060;rport=5060;received=192.168.2.64;branch=z9hG4bK535315480 From: <sip:[email protected]>;tag=1034018613 To: <sip:[email protected]>;tag=32293130 CSeq: 20 MESSAGE Call-ID: 1544085115 User-Agent: LiveQing Content-Length: 0
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