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Glossary

Signal input/output

Coupling a system that triggers an alarm (for example, a ﬁre alarm system or a network

camera) to a control center or another type of transmitter (for example, a telephone or IP

network). A typical signal input/output scenario in video surveillance progresses as follows:

an event triggers an alarm. This alarm then display the video image from the network

camera that triggered the alarm on the monitor at a control center.

SIP

Session Initiation Protocol. Network protocol for setting up, controlling and terminating a

communication connection via a computer network. SIP is frequently used in conjunction

with IP telephony.

Snapshot

Photograph of a situation created spontaneously and directly with a mouse click.

Switch

Hardware used to connect multiple network devices (computers, cameras, printers, etc.) within

a network. A PoE switch can also supply the cameras with power over an Ethernet cable.

UPS

Uninterruptible Power Supply. Refers to devices that continue to supply power in the event of

a sudden power failure. These devices usually operate using a battery. A UPS is installed on

the power lines of devices and systems in order to protect them in the event of a power failure.

VoIP

Voice over IP. Telephony using computer networks.

WLAN

Wireless Local Area Network. Used to provide Internet connections without the need for cables.

Wizard

Refers to a software component that helps the user install or set up a particular program

and guides the user through the conﬁguration process by means of simple questions.

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