4xem sku IPCAMW40 User Manual - page 16

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UDP protocol. 

The HTTP protocol must be selected if the network is protected by a firewall and it only 

allows HTTP Port (80) to be opened. In this mode, audio will not be sent and only video 

is operational.    If no special need is required, UDP protocol is recommended. Generally 

speaking, the client’s choice will be in the order of UDP → TCP → HTTP. After the 

Network Camera is connected successfully, “Protocol Option” will indicate the selected 

protocol. The selected protocol will be recorded in the user's PC and will be used for the 

next connection. If the network environment is changed, or the user wants to let the 

web browser to detect again, manually select the UDP protocol, save, and return HOME 

to re-connect. 

http:///protocol.html

is the domain name or the original IP address of the Network 

Camera.