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Net transmission Protocol- There are TCP and Multicast (two types). Multicast protocol: the 1st user logged in can control power, can view the image at will and other users can only follow this user to view the image. 5 users are allowed to view at the same time. TCP protocol: each user can view the image at will. According to the need, users can choose between different protocols. If viewing is through the Internet you must choose TCP.
Alarm When there are alarm input signals, the user can select the recording channel and the output port for the actual need.
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