Operating the Camera
Switching TCP/UDP Transmission Mode
24
Switching TCP/UDP
Transmission Mode
You can select TCP or UDP as the communication port
for the video/audio data.
This function can be used when Mode (video codec
mode) (page 33) 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, disable
“Windows Firewall” (see page 9).
1
Open the main viewer.
2
Click TCP/UDP Transmission.
The Select TCP/UDP 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
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 the video/audio by
selecting the TCP port.
UDP (Unicast): When UDP (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 camera and the
computer, or depending on the network
environment, the video/audio may not play back
properly when UDP (Unicast) is selected. In that
case, select TCP.
UDP (Multicast): This protocol is selectable when
Multicast streaming (page 35) 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 that does not correspond to the multicast or
a firewall is installed between the camera and the
computer, the video/audio may not play back
properly. In that case, select TCP or UDP
(Unicast).
4
Click OK to close the dialog.
If you do not change the transmission setting, click
Cancel.
