# LAN vs WAN Mode

In WAN mode, after you logged in, the interface is shown as below.

<img src="/images/old/Image_700.jpg">

Please refer to the following contents for LAN and WAN login difference.

1. In the WAN mode, system opens the main stream of the first channel to monitor by default.
    The open/close button on the left pane is null.
2. You can select different channels and different monitor modes at the bottom of the interface.

<img src="/images/old/Image_701.jpg">

The window display mode and the channel number are by default.
For example, for the 16-channel, the max window splitmode is 16.

Multiple-channel monitor, system adopts extra stream to monitor by default.
Double click one channel, system switches to single channel and
system uses main stream to monitor.

You can view there are two icons at the left top corner of the channel number
for you reference.

M stands for main stream. S stands for sub stream (extra stream).

If you login via the WAN mode,
system does not support alarm activation to open the video function in the Alarm setup interface.

* For multiple-channel monitor mode, system adopts extra stream to monitor by default. You can not modify manually. All channels are trying to synchronize. Please note the synchronization effect still depends on your network environments.

* For bandwidth consideration, system can not support monitor and playback at the same time. System auto closes monitor or playback interface when you are searching setup in the configuration interface. It is to enhance search speed.