Dahua Smart 1U User Manual page 277

For the product supports analog standard definition camera/HD camera, you need to go to

the Main Menu > CAMERA > CHANNEL TYPE to select corresponding channel type and
then restart the DVR.
29. I cannot connect to the IP channel.
There are following possibilities:
Check the camera is online or not.

Check IP channel setup is right or not (such as IP address, user name, password,

connection protocol, and port number).
The camera has set the whitelist (Only the specified devices can connect to the camera).

30. After I connected to the IP channel, the 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, and

HD1).
31. After I connected to the IP channel, the 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 >

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, and

HD1).
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, and HD1).
Check the camera setup. Please make sure It supports the products of other

manufacturers.
33. DDNS registration failed or cannot 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 cannot use the P2P function on my cell phone or the WEB.
There are following possibilities:
FAQ 267