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General information on GB/T28181 standard and supported functions

Axxon PSIM supports allows connecting devices via the Chinese chinese standard GB/T28181. This standard protocol is based on the SIP over UDP protocol (and over TCP since starting with the GB/T28181-2016 version). The GB/T28181 protocol uses the following protocols over SIP:

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This allows receiving the status of sensors, events from detectors, PTZ and relays control, access to the built-in embedded archive of the IP device (make sure to you must set the correct device time zone in the in Axxon PSIM beforehand), etc. within within the SIP session. Single, and so on. The operation with single-channel and multi-channel devices in single-stream mode and working with the UDP and TCP transport protocols is also supported.

At the same level of the OSI model, the RTP/RTCP protocol also works in parallel with the SIP protocol, which makes it possible to use the following functions:

• Video video transmission (including archivalarchive one) in in H264, H265, or MJPEG formatformats.
• Audio audio transmission in G.711a, G.711u, or G.726 format formats in the PS (Program Stream) stream only. Archive audio is not Audio from the archive isn't supported.
  

For the most up-to-date information on this standard and the features supported in Axxon PSIM, see the Documentation Drivers Pack.

Configuring an IP-device to operate via the GB/T28181 standard

Configuration of To configure IP devices connected via the GB/T28181 is performed through protocol, use the web interface of the these IP devices. Settings are not The settings aren't sent from Axxon PSIM to the device.

Before connecting a camera you connect the IP device via this protocol to Axxon PSIM, perform the following steps to configure SIP you must set the SIP settings on the IP device in the following way:

1. Set the Server IP parameter equal to equal the Serverserver's IP address.
2. Set the Server port parameter (5060 by default).
3. Set the Device ID . The ID should parameter. This parameter must be set on all cameras connected via the GB/T28181 protocol and must be unique.   The format of the connection code (device ID and server ID) is a 20-digit number:
   
   • the first 10 digits specify the address (according to the GB/T-2260-2007 standard);
     
   • the next 10 digits
   indicate
   • specify the device information.
     If the IP device is located behind NAT,
   then
   • you must forward and explicitly specify the external address of the
   Server
   • server, the port/port range for receiving video, and the SIP port of the Axxon PSIM
   Server
   • server.Example: 34020000001110000001/50557-51557@10.3.3.11/85.172.174.36​
   For
4. If you want the device to
perform autodiscovery of
5. detect the
Server
6. server more quickly, reduce the default value of the RefreshRegTime parameter. The name of this setting
may vary on some cameras
7. can differ on different IP devices.

See also Examples of IP device settings for connection via GB/T28181 standard.

Configuring IP-device connection via the GB/T28181 standard

After configuring you configure the device as described earlierabove, add it to Axxon PSIM as follows:

1. Go to the Hardware tab of the Systemsettings dialog box window (1).
   Image Modified
2. Create a the Video Capture Device object under capture device object on the basis of the Computer object (2). The settings panel of the this object appears on the right part of the System settings dialog box window.
3. Select From the GBT28181 value in the Type dropdown list (3), select the GBT28181 value.
4. In the IP field (4), specify the value of Device ID parameter set during IP device configuration (4). The following additional parameters can be specified optionally as followsin the following format:
   [gbt://]deviceID[/videoPort]@serverID[-serverLocalIP[/serverExternalIP]]
   ORor
   [gbt://]deviceID[/videoPortFirst-videoPortLast]@serverID[-serverLocalIP[/serverExternalIP]]
   where:
   deviceID is the Device ID parameter specified during the IP device setup;
   serverID is the identifier of the Axxon PSIM Server generated according server created according to the same rules as the IP device ID (see above);
   videoPort is the port for receiving video;
   videoPortFirst-videoPortLast is range of ports for receiving video;
   serverLocalIP is the local IP address of the Axxon PSIM Server server, which sets the network interface on which the Server should server will be available;
   serverExternalIP is the global IP address of the Axxon PSIM Server server; this parameter is in use used when the Axxon PSIM Server server is behind the gateway. In this case, this IP address is specified as the SIP Server IP server address in the IP device settings.

   Info
   title Examples.
   34020000001320000008@34020000002000000001 34020000001320000008@34020000002000000001-10.0.40.246/113.125.160.58 34020000001320000008@34020000002000000001-10.0.40.246 34020000001320000008@34020000002000000001-/113.125.160.58 34020000001320000008/50200@34020000002000000001 34020000001320000008/50200-50210@34020000002000000001-10.0.40.246

5. In the Port field field (5), enter the local port number that the Axxon PSIM Server shall listen for receiving server will "listen" to receive messages from the IP device (5).
   Usually this is the default SIP port: 5060port—5060.
   

   Info
   title Note.
   The SIP port of the IP device SIP port is detected automatically.

    
6. The Name and the and Password fields are not usedaren't used (6).
7. Click the Apply button (7).
8. Create a the Camera object under on the basis of the VideoCaptureDevice capture device object. The settings panel of the this object appears on the right part of the System settings dialog box window.
   Image Modified
9. Click the Apply button.

Further functioning of work with the device (e.g. for example, displaying video on the Video Surveillance Monitormonitor, archive recording) is performed using the created Camera object – see object—see the Configuring video subsystem section of in the Administrator's Guide document. The PTZ and relay management functions, access to the built-in embedded storage, etc. and so on are configured in the same manner way as for ordinary IP devices as and described in the corresponding sections herein.of this document Installing and configuring security system components guide.

Adding the device that operates via the A camera via GB/T28181 protocol is now addedcomplete.