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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:

• SDP (Session Description Protocol)
• MANSCDP (Monitoring and Alarming Network System Control Description Protocol)
• MANSRTSP (Monitoring and Alarming Network System Real Time Streaming Protocol)

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 transmission (including
archival
• archive one)
in
• in H264, H265, or MJPEG
format
• formats.
• 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
2. the
Server
3. server's IP address.
4. Set the Server port parameter (5060 by default).
5. Set the Device ID
. The ID should
6. parameter. This parameter must be set on all cameras connected via the GB/T28181 protocol and must be unique.
 
7. 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
8. • specify the device information.
     If the IP device is located behind NAT,
then
9. • you must forward and explicitly specify the external address of the
Server
10. • server, the port/port range for receiving video, and the SIP port of the Axxon PSIM
Server
11. • server.Example: 34020000001110000001/50557-51557@10.3.3.11/85.172.174.36​
For
12. If you want the device to
perform autodiscovery of
13. detect the
Server
14. server more quickly, reduce the default value of the RefreshRegTime parameter. The name of this setting
may vary on some cameras
15. 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
2. window (1).
   Image Modified
3. Create
a
4. the Video
Capture Device object under
5. capture device object on the basis of the Computer object (2). The settings panel of
the
6. this object appears on the right part of the System settings
dialog box
7. window.
Select
8. From the
GBT28181 value in the
9. Type dropdown list (3), select the GBT28181 value.
10. 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 follows
11. in the following format:
    [gbt://]deviceID[/videoPort]@serverID[-serverLocalIP[/serverExternalIP]]
    
OR
12. or
    [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
13. server created according to the same rules as the IP device ID (see above)
.
14. ;
    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
15. server, which sets the network interface on which the
Server should
16. server will be available;
    serverExternalIP is the global IP address of the Axxon PSIM
Server
17. server; this parameter is
in use
18. used when the Axxon PSIM
Server
19. server is behind the gateway.In this case, this IP address is specified as the SIP
Server IP
20. server address in the IP device settings.

    Info
    title Examples

.

21. 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

22. In the Port

field

23. field (5), enter the local port number that the Axxon PSIM

Server shall listen for receiving

24. server will "listen" to receive messages from the IP device

(5)

25. .
    Usually this is the default SIP

port: 5060

26. port—5060.
    

    Info
    title Note

.

27. The SIP port of the IP device

SIP port

28. is detected automatically.

29. The Name
and the
30. and Password fields
are not used
31. aren't used (6).
32. Click the Apply button (7).
33. Create
a
34. the Camera object
under
35. on the basis of the Video
CaptureDevice
36. capture device object. The settings panel of
the
37. this object appears on the right part of the System settings
dialog box
38. window.
    Image Modified
39. 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  Administrator’s Guidein 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.