Switching TCP/UDP
Transmission Mode
You can select TCP or UDP as the communication port
for video/audio data.
This function can be used when Mode (video codec
mode) is set to MPEG4 or H.264 and the ActiveX
Viewer is used.
Notes
• The function may not operate correctly if 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 later,
Windows Vista, or Windows 7, disable “Windows
Firewall”. For details, see “Configuring Windows
Firewall” in “When using Windows XP Service Pack
2 or later” on page 9, “Configuring Windows
Firewall” in “When using Windows Vista” on page 11,
or “Configuring Windows Firewall” in “When using
Windows 7” on page 14.
1
Select TCP, Unicast or Multicast from the
Connection drop-down list in the Others panel.
TCP: This is normally selected.
When TCP is selected as the communication port,
HTTP communication is adopted for video/audio
communications.
HTTP is the protocol used for reading the usual
Web page.
In an environment capable of reading Web pages,
you can watch or listen to video/audio by selecting
the TCP port.
Unicast: When Unicast is selected as the
communication port, RTP (Real-time Transport
Protocol) is adopted for video/audio
communications. Since RTP is the protocol for
running video/audio data, the video/audio playback
is smoother than when TCP (HTTP) is selected. If
a firewall is installed between the system and the
computer, or depending on the network
environment, video/audio may not play back
properly when Unicast is selected. In this case,
select TCP.
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