User`s manual

A
A. Frequently Asked Questions
Q:
What if I forget my password?
A:
Every access to the IP camera needs authentication, unless the admin password is set up as blank. If you
are one of the managed users, you will need to ask the administrator for the password. If you are the
administrator, there is no way to recover the admin password. The only way to regain access to IP camera
is to utilize the
RESET
button on the top panel to restore the factory settings (see Chapter 1 for details).
Q:
Why can’t I see video from the IP camera after it has been authenticated?
A:
There
are many possible scenarios:
If the IP camera is installed correctly and you are accessing the IP camera for the first time using Internet
Explorer, adjust the security level of Internet Explorer to allow installation of plug
-ins.
If the problem still exists, the number of users accessing the IP camera at the same time may exceed the
maximum that the system allows.
Q:
What is the plug
-in for?
A:
The plug
-in provided by IP camera is used to display motion pictures. The plug-in is needed because
Internet
Explorer does not support streaming technology. If your system does not allow installation of
plug
-
in software, the security level of the web browser may need to be lowered. It is recommended that
you consult the network supervisor in your office before a
djusting the security level.
Q:
Why is the timestamp different from the system time of my PC or notebook?
A:
The timestamp is based on the system time of the IP camera. It is maintained by an internal real
-time
clock, and automatically synchronizes
with the time server if the video encoder is connected to the
Internet and the function is enabled. Differences of several hours may result from the time zone setting.
Q:
How many users are allowed to access the IP camera at the same time?
A:
Basically, there is no limitation. However the video quality also depends on the network
. To achieve
the best
effect, the VPort 16-M12 IP camera will allow 10 video streams for udp/tcp/http c
onnections. We
recommend using an
additional web server that retrieves images from the IP camera
periodically if you
need to host a large number of users.
Q:
What is the IP camera’s video rate?
A:
The codec can process 30 frames per second internally. However the total performance is subject to many
variables, as
listed below:
1.
Network throughput.
2.
Bandwidth share.
3.
Number of users.
4.
More complicated objects result in larger image files.
5.
The speed of the PC or notebook that is responsible for displaying images.