Axis Communications Security Camera 241Q User Manual

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AXIS 241Q/241S - System options
QoS (Quality of service)
Quality of Service (QoS) provides the means to guarantee a certain level of a specified
resource to selected traffic on a network. Quality can be defined as a maintained level of
bandwidth, low latency, and no packet losses. The main benefits of a QoS-aware network
are:
• The ability to prioritize traffic and thus allow
critical flows to be served before
flows with lesser priority.
• Greater reliability in the network, thanks to the
control of the amount of band-
width an application may use, and thus control
over bandwidth races between
applications.
The QoS in Axis network video products marks th
e data packets for various types of
network traffic originating from the product. This makes it possible for network routers
and switches to reserve a fixed amount of bandwidth for these types of traffic. The
following types of traffic are marked:
• live video
• event/alarm traffic
• management network traffic.
QoS Settings
For each type of network traffic supported by
your Axis network video product, enter a
DSCP (Differentiated Services Codepoint) value. This value is used to mark the traffic’s IP
header. When the marked traffic reaches a network router or switch, the DSCP value in the
IP header tells the router or switch which type of treatment to apply to this type of traffic,
for example, how much bandwidth to reserve for it.
Note that DSCP values can be entered
in decimal or hex form, but saved values are always
shown in decimal.
For more information on Quality of Service, please
see the Axis support web at
www.axis.com/techsup
SMTP (email)
Enter the host names or addresses for your primary and secondary mail servers in the
fields provided, to route event and error email messages from the video server to
predefined addresses, via SMTP.
If the mail server requires SMTP authentication, check the box for Use authentication to
lo
g in to this server and enter the user name and password used for logging in. Several
different methods of authentication are available. See the online help for more
information.

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