User Manual

68 WNVR Series User’s Manual
Chapter 8: 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.
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.