71
Others
Troubleshooting
Symptom Causes and Countermeasures Reference
Page
IP address of VN-C20 is
unknown
●This is 192.168.0.2 in the default settings, and
the subnet mask is 255.255.255.0.
●When the DHCP client is set to AONB, VN-C20
will run using the IP address in the default
settings when it is started up via a LAN in which
a DHCP server does not exist.
●If it is started up using a computer that is
configured within the same LAN, you can search
for the IP address using the search tool.
APage 26
The web page of VN-C20
cannot be displayed
Check the Internet Explorer settings.
When a proxy server is in use, configure the proxy
server settings of the Internet Explorer accordingly.
APage 27
The built-in viewer cannot be
installed
Check the Internet Explorer settings.
The built-in viewer consists of a software
component called ActiveX.
When using the built-in viewer for the first time, the
ActiveX is supposed to be installed. However, the
installation may be rejected depends on the setting
of the AntiVirus software. In such case, change the
setting of the AntiVirus software, and then install the
built-in viewer.
APage 61
Authentication by Verisign
appears during installation of
the built-in viewer
Verisign's electronic signature is stored in the built-
in viewer.
For computers with a network environment that is
connected to the Internet, the authenticity of the
viewer can be verified via authentication by Verisign.
−
A warning message appears
upon starting up the built-in
viewer
The built-in viewer consists of a software
component called ActiveX.
When using the built-in viewer for the first time, the
ActiveX is supposed to be installed. However, the
installation may be rejected depends on the setting
of the AntiVirus software. In such case, change the
setting of the AntiVirus software, and then install the
built-in viewer.
−
TCP images cannot be
played back
The maximum number of JPEG images that can be
sent by VN-C20 via TCP is 5, and up to 5 built-in
viewers can be connected to each VN-C20 unit.
Make use of multicast to monitor areas beyond the
above number.
VN-C20 allows multicast transmission of up to 1
stream.
APage 20
VN-C20_EN.book Page 71 Tuesday, February 14, 2006 10:51 AM