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Operating the Camera
Switching TCP/UDP Transmission Mode
24
Switching TCP/UDP
Transmission Mode
You can select the communication port of the video/
audio data as TCP or UDP.
This function can be used when the Video mode
(page 34) is set to MPEG4 and the ActiveX viewer is
used.
Notes
• The function may not operate correctly when you use
personal firewall software or antivirus software on
your computer. In that case, disable the software or
select the TCP mode.
• If you are using Windows XP Service Pack 2 or
Windows Vista, disable “Windows Firewall.” For
details, see “Configuring Windows Firewall” in
“When using Windows XP Service Pack 2” on
page 10 or “Configuring Windows Firewall” in
“When using Windows Vista” on page 12.
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
fire-wall is installed between the camera and the
computer, or depending on the network
environment, the video/audio may not play
properly when UDP (Unicast) is selected. In this
case, select TCP.
UDP (Multicast): This is selectable when the
multicast streaming (page 34) is On. When UDP
(Multicast) is selected as the transmission port,
RTP (Real-time Transport Protocol) and UDP
multicast techniques are adopted for video/audio
transmission. By selecting it, the network
transmission load of the camera can be reduced. If
a router which does not correspond to the multicast
or the fire-wall is installed between the camera and
the computer, the video/audio may not play
properly. In this case, select TCP or UDP
(Unicast).
4
Click OK to close the dialog.
If you decide not change the transmission setting,
click Cancel.