Video Surveillance Questions

  • What is CCTV?
    • CCTV (closed-circuit television) is a TV system in which signals are not publicly distributed but are monitored for surveillance and security purposes.  CCTV relies on strategic placement of cameras and observation of the camera’s input on monitors somewhere.
  • What is an analog camera?
    • Analog CCTV Camera: Considered older technology these cameras require an RG 59 connection direct to a DVR.  These cameras are not capable of broadcasting on a IP network.  Remote access to these cameras can only be obtained via network connection through a DVR.
  • What is an IP camera?
    • IP cameras use the Internet Protocol (IP) used by most Local Area Networks (LANs) to transmit video across data networks in digital form. IP can optionally be transmitted across the public internet, allowing users to view their cameras through any internet connection available through a computer or a phone, this is considered remote access.
  • What a a DVR?
    • A digital video recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device.  These are used for analog camera systems.
  • What is an NVR?
    • A network video recorder (NVR) is a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or mass storage device.  An NVR contains no dedicated video capture hardware.  An NVR is typically deployed in an IP video surveillance system.

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