Chapter 9: Glossary - Night Owl WNVR201 Series User Manual

Chapter 9: Glossary

DDNS: Dynamic Domain Naming System. Method for automatically updating hostnames, address or other
information like a URL on a given name server.
DHCP: Dynamic Host Configuration Protocol. A network protocol that allows a server to automatically
assign a device and IP address.
IP: Internet Protocol. Protocol for standard communications across the Internet.
ISP: Internet Service Provider. An organization that provides services for accessing or using the Internet.
OSD: On Screen Display.
PIR: Passive Infrared. Heat-based sensors eliminate most false alarms and only delivers alerts when people,
animals or vehicles are detected.
SMTP: Simple Mail Transfer Protocol. Standards used for email transmission.
UPS: Uninterrupted Power Supply. Device used to keep the NVR and cameras powered when the main
power supply is lost or disconnected.
75