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Signal Input/Signal 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. Snapshot
Photograph of a situation created spontaneously and directly with a mouse click.
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.
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. 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.
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