Vivotek PT3112/3122 User Manual download pdf (Page 16)

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more real-time. But some packets may be lost due to network burst traffic and images

will be obscure. If TCP protocol is selected, packet loss would not occur and video

display will more accurate. But the real-time effect is worse than UDP protocol. If the

network is protected by a firewall and it opens HTTP port (80) only, HTTP protocol must

be selected. In this mode, audio will not be sent and you can see the video only. If you

have no special needs and no idea to choose one among them, simply choose UDP.

Generally the client will automatically try these protocols by the following order, UDP →

TCP → HTTP. After the client connects to the Network Camera successfully, “Protocol

Option” will show the working protocol. The chosen protocol will be recorded in the

user's PC and used for next connection. If the network environment is changed or users

want to let web browser detect again, select UDP manually to save and then return

HOME to connect again.

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Vivotek PT3112/3122 User Manual Page 16