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• DDNS – Stands for Dynamic Domain Name System. DDNS is a method of automatically updating a name server in
the Domain Name System (DNS), often in real time, with the active DNS configuration of its configured hostnames,
addresses or other information.
• Default Gateway – The node on the computer network that the network software uses when an IP address does
not match any other routes in the routing table.
• DHCP – Dynamic Host Configuration Protocol is a network protocol that enables a server to automatically assign an
IP address to a computer from a defined range of numbers (i.e., a scope) configured for a given network.
• Fluency – Fluency described the lack of stuttering or excessive delay in a video stream. Fluency usually comes at
the expense of video quality when a network is constrained.
• IP Address – Internet Protocol Address is a unique numerical label assigned to each device connected to a
computer network. The IP address allows communication between different devices on a network.
• Main Stream – Main Stream is the main streaming protocol for the camera. Main stream uses more bandwidth and
attempts to keep quality and fluency high.
• NO/NC – Normally Open and Normally Closed are options for sensor type. These settings allow for different
exposure types when capturing video and still images.
• NTP – Network Time Protocol is a networking protocol for clock synchronization between computer systems over
packet-switched, variable-latency data networks.
• P2P – Peer-to-Peer is a decentralized communications model in which each party has the same capabilities and
either party can initiate a communication session.
• PPPoE – Point to Point Protocol over Ethernet is a network protocol for encapsulating Point to Point Protocol data
packets inside Ethernet frames.
• QR Code – Quick Response code is a type of digital barcode that enables devices to share complex data strings
quickly.
• Record Delay – Record Delay specifies in seconds how long the delay between alarm activation and recording
should be.
• Relay Out – Relay Out triggers a connected alarm (connected to the alarm port on the back of the camera) when
an alarm on the camera is triggered.
• S/N – S/N stands for serial number. The S/N is unique to each camera and can be used to connect to different
Amcrest apps and services to provide different methods of access to the camera.
• Sensitivity – Sensitivity is the amount of change required to increase the motion detected by a percentage. The
lower the sensitivity, the more movement is required to trigger an alarm.
• SMTP – Simple Main Transfer Protocol is an Internet standard for electronic mail (e-mail) transmission.
• Static IP – An IP address that does not change.
• Sub Stream – Sub Stream is an alternative streaming protocol for the camera. Sub stream uses less bandwidth and
attempts to keep fluency high at the expense of quality.
• Subnet Mask – a 32-bit number that masks an IP address, and divides the IP address into network address and host
address.
• TCP/IP – TCP/IP stands for Transmission Control Protocol/Internet Protocol and it is the language/protocol that
allows communication between internet connected devices, whether on a local network, or a on the Internet at
large.
• Threshold – Threshold is the level that the motion detection needs to reach to trigger an alarm.
• UPnP – UPnP stands for Universal Plug and Play, and it is a protocol used to easily connect devices to the internet.
• Video Tamper – Video Tamper refers to any major changes happening to the video feed such as it being blocked
out, interfered with, or disconnected.
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