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30. After I connected to the IP channel, there one-window output is OK, but there is no

multiple-window output.

There are following possibilities:

 Check the sub stream of the camera has been enabled or not.

 Check the sub stream type of the camera is H.264 or not.

 Check the device supports camera sub stream resolution or not (such as 960H, D1, HD1 and

etc.).

31. After I connected to the IP channel, there multiple-window output is OK, but there is no

one-window output.

There are following possibilities:

 Check there is video from the IP channel or not. Please go to the main

menu->info->System->BPS to view bit stream real-time information.

 Check the main stream of the camera has been enabled or not.

 Check the main stream type of the camera is H.264 or not.

 Check the device supports camera main stream resolution or not (such as 960H, D1, HD1 and

etc.).

 Check camera network transmission has reached the threshold or not. Please check the online

user of the camera.

32. After I connected to the IP channel, there is no video output in the one-window or the

multiple-window mode. But I can see there is bit stream.

There are following possibilities:

 Check the main stream/sub stream type of the camera is H.264 or not.

 Check the device supports camera main stream/sub stream resolution or not (such as 1080P,

720P, 960H, D1, HD1 and etc.).

 Check the camera setup. Please make sure It supports the products of other manufacturers.

33. DDNS registration failed or can not access the device domain name.

There are following possibilities:

 Check the device is connected to the WAN. Please check the device has got the IP address if

the PPPoE can dial. If there is a router, please check the router to make sure the device IP is

online.

 Check the corresponding protocol of the DDNS is enabled. Check the DDNS function is OK or

not.

 Check DNS setup is right or not. Default Google DNS server is 8.8.8.8, 8.8.5.5. You can use

different DNS provided by your ISP.

34. I can not use the P2P function on my cell phone or the WEB.

There are following possibilities:

 Check the device P2P function is enabled or not. (Main menu->Setting->Network->P2P)

 Check the device is in the WAN or not.

 Check cell phone P2P login mode is right or not.

Dahua HCVR82**A-S3 Series User Manual

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