Camera the Operating

fire-wall is installed between the camera and the

Switching TCP/UDP

computer, or depending on the network

 

 

 

Transmission Mode

environment, the video/audio may not play

properly when UDP (Unicast) is selected. In this

 

 

 

 

 

 

case, select TCP.

You can select the communication port of the video/

UDP (Multicast): This is selectable when the

audio data as TCP or UDP.

multicast streaming (page 34) is On. When UDP

This function can be used when the Video mode

(Multicast) is selected as the transmission port,

(page 34) is set to MPEG4 and the ActiveX viewer is

RTP (Real-time Transport Protocol) and UDP

used.

 

 

multicast techniques are adopted for video/audio

 

 

 

 

 

 

transmission. By selecting it, the network

Notes

 

 

 

 

transmission load of the camera can be reduced. If

• The function may not operate correctly when you use

a router which does not correspond to the multicast

personal firewall software or antivirus software on

or the fire-wall is installed between the camera and

your computer. In that case, disable the software or

the computer, the video/audio may not play

select the TCP mode.

properly. In this case, select TCP or UDP

• If you are using Windows XP Service Pack 2 or

(Unicast).

Windows Vista, disable “Windows Firewall.” For

4 Click OK to close the dialog.

details, see “Configuring Windows Firewall” in

“When using Windows XP Service Pack 2” on

 

page 10 or “Configuring Windows Firewall” in

If you decide not change the transmission setting,

“When using Windows Vista” on page 12.

click Cancel.

1 Display the main viewer.

 

2 Click

TCP/UDP transmission selector icon.

 

Transmission mode selector dialog appears.

3 Click one of the buttons TCP, UDP (Unicast) or UDP (Multicast).

TCP: This is normally selected.

When TCP is selected as the communication port, HTTP communication is adopted for video/audio communication.

HTTP is the protocol used for reading a usual Web page.

In an environment capable of reading Web page, you can watch or listen to the video/audio by selecting TCP port.

UDP (Unicast): When UDP (Unicast) is selected as the communication port, RTP (Real-time Transport Protocol) is adopted for video/audio communication. As RTP is the protocol for running video/audio data, video/audio can be played smoother than when TCP (HTTP) is selected. If the

24 Switching TCP/UDP Transmission Mode