User Guide

AXIS 241QA/AXIS 241SA - System options

SOCKS

SOCKS is a networking proxy protocol. The AXIS 241QA/AXIS 241SA can be configured

to use a SOCKS server to reach networks on the other side of a firewall/proxy server. This

function is useful if the video server is located on a local network behind a firewall, but

notifications, uploads, and alarms need to be sent to a destination outside the local

network (such as the Internet).

QoS

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

can be summarized as:

• 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

• live audio

• 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 Code Point) 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.

More information on Quality of Service at 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 enable event and error email messages from the video server to

predefined addresses, via SMTP.