Axis M7001 Manual de usuario descargar pdf (Pagina 44)

AXIS M7001 - Glossary

(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 e.g. a maintained level of

bandwidth, low latency, no packet losses, etc.

Router – A device that determines the next network point to

which a packet should be forwarded on its way to its final

destination. A router is often included as part of a network switch

(see below).

RTP – Real-Time Transfer Protocol. A transfer protocol designed

for the delivery of live content, e.g. H.264.

RTSP (Real Time Streaming Protocol) – RTSP is a control

protocol, and a starting point for negotiating transports such as

RTP, multicast and Unicast, and for negotiating codecs. RTSP can

be considered a “remote control” for controlling the media stream

delivered by a media server. RTSP servers typically use RTP as the

protocol for the actual transport of audio/video data.

Simplex – In simplex operation, a network cable or

communications channel can only send information in one

direction; it's a “one-way street”.

SMTP – Simple Mail Transfer Protocol is the protocol used to send

email across the Internet. SMTP authentication is a way of

allowing people outside of a domain to use an SMTP server when

sending email.

SNMP – Simple Network Management Protocol. An application

layer protocol that facilitates the exchange of management

information between network devices. It is part of the

Transmission Control Protocol/Internet Protocol (TCP/IP) protocol

suite.

Subnet Mask – An IP address consists of two components: the

network address and the host address. “Subnetting’ enables a

network administrator to further divide the host part of the

address into two or more subnets. The subnet mask identifies the

subnet to which an IP address belongs.

Switch – A network switch is a device used to connect multiple

devices to the network. A switch only transmits data to the device

the data is specially intended for.

TCP/IP – Transmission Control Protocol/Internet Protocol. A suite

of network protocols that determine how data is transmitted.

TCP/IP is used on many networks, including the Internet. TCP

keeps track of the individual packets of information and IP

contains the rules for how the packets are actually sent and

received.

UDP – The User Datagram Protocol is a communications protocol

that offers a limited amount of service when messages are

exchanged between computers in a network that uses the Internet

Protocol (IP). UDP is an alternative to the Transmission Control

Protocol (TCP) and, together with IP, is also known as UDP/IP.

Unicast – Communication between a single sender and a single

receiver over a network. A new connection is established for each

new user.

URL – Uniform Resource Locator. An “address" on the network.

Varifocal – A varifocal lens provides a wide range of focal

lengths, as opposed to a lens with a fixed focal length, which only

provides one.

WAN – Wide-Area-Network. Similar to a LAN, but on a larger

geographical scale.

Web server – A program on a computer that delivers the

resources (usually web pages) requested by the web user (the

client).

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Axis M7001 Manual de usuario Pagina 44

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