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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 archival) in H264, H265, or MJPEG format.
• audio Audio transmission in G.711a, G.711u, or G.726 format in PS (Program Stream) only. Archive audio is not 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 GB/T28181 standard

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1. Go to the Hardware tab of the Systemsettings dialog box (1).
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2. Create a Video Capture Device object under the Computer object (2). The settings panel of the object appears on the right of the System settings dialog box.
3. Select the GBT28181 value in the Type dropdown list (3).
4. In the IP field specify the value of Device ID parameter set during IP device configuration (4). The following additional parameters can be specified optionally as follows:
   [gbt://]deviceID[/videoPort]@serverID[-serverLocalIP[/serverExternalIP]]
   OR
   [gbt://]deviceID[/videoPortFirst-videoPortLast]@serverID[-serverLocalIP[/serverExternalIP]]
   where:
   deviceID is the Device ID parameter;
   serverID is the identifier of the Axxon PSIM Server generated 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, which sets the network interface on which the Server should be available;
   serverExternalIP is the global IP address of the Axxon PSIM Server; this parameter is in use when the Axxon PSIM Server is behind the gateway. In this case, this IP address is specified as the SIP Server IP 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, enter the local port number that the Axxon PSIM Server shall listen for receiving messages from the IP device (5). Usually this is the default SIP port: 5060.
   

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

   
   

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

Further functioning of the device (e.g. displaying video on the Video Surveillance Monitor, archive recording) is performed using the created Camera object – see Configuring video subsystem section of  Administrator’s Administrator's Guide. The PTZ and relay management functions, access to the built-in storage, etc. are configured in the same manner as for ordinary IP devices as described in the corresponding sections herein.

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