Vivotek SC8131 User Manual

VIVOTEK
User's Manual - 175
Network > QoS (Quality of Service)
Quality of Service refers to a resource reservation control mechanism, which guarantees a certain
quality to different services on the network. Quality of service guarantees are important if the
network capacity is insufcient, especially for real-time streaming multimedia applications. Quality
can be dened as, for instance, a maintained level of bit rate, low latency, no packet dropping, etc.
The following are the main benets of a QoS-aware network:
■
The ability to prioritize trafc and guarantee a certain level of performance to the data ow.
■
The ability to control the amount of bandwidth each application may use, and thus provide higher
reliability and stability on the network.
Requirements for QoS
To utilize QoS in a network environment, the following requirements must be met:
■
All network switches and routers in the network must include support for QoS.
■
The network video devices used in the network must be QoS-enabled.
QoS models
CoS (the VLAN 802.1p model)
IEEE802.1p denes a QoS model at OSI Layer 2 (Data Link Layer), which is called CoS, Class of
Service. It adds a 3-bit value to the VLAN MAC header, which indicates the frame priority level from
0 (lowest) to 7 (highest). The priority is set up on the network switches, which then use different
queuing disciplines to forward the packets.
Below is the setting column for CoS. Enter the
VLAN ID
of your switch (0~4095) and choose the
priority for each application (0~7).
If you assign Video the highest level, the switch will handle video packets rst.
► A VLAN Switch (802.1p) is required. Web browsing may fail if the CoS setting is incorrect.
► Class of Service technologies do not guarantee a level of service in terms of bandwidth and
delivery time; they offer a "best-effort." Users can think of CoS as "coarsely-grained" traffic
control and QoS as "nely-grained" trafc control.
► Although CoS is simple to manage, it lacks scalability and does not offer end-to-end guarantees
since it is based on L2 protocol.
NOTE:

Vivotek SC8131 Specifications

General

Built-in HDD	No
Flash memory	256 MB
Card reader integrated	Yes
Compatible memory cards	MicroSD (TransFlash), MicroSDHC, MicroSDXC
Sensor type	CMOS
Optical sensor size	1/3 \
Maximum resolution	2560 x 960 pixels
Video formats supported	H.264, M-JPEG
Power consumption	300 mA
Power source type	PoE
Power consumption (Power over Ethernet (PoE))	12.95 W
Type	IP security camera
Certification	CE, LVD, FCC B, VCCI, C-Tick, UL
Placement supported	Indoor
Connectivity technology	Wired
Interface	RJ-45
Form factor	-
Mounting type	Ceiling
Product color	White
LED indicators	Power, Status
Networking standards	IEEE 802.3af
Number of cameras	1
Operating temperature (T-T)	-10 - 40 °C
Windows operating systems supported	Windows 2000, Windows 7, Windows 8, Windows Vista, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64
Intelligent Video Surveillance (IVS) system features	People counting
Minimum illumination	- lx

Weight and Dimensions

Depth	160 mm
Width	70 mm
Height	38 mm
Weight	396 g