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Advantages

• Image Quality: The image quality from digital security cameras is significantly higher than analogue, with many
cameras capable of recording and transmitting high-definition video. Plus, digital cameras are more likely to have
digital zoom features, which can have zoom distances over 100ft.
• Coverage Area: A single digital camera can cover an area that would require three or even four of its analogue
counterparts. As a result, you may require fewer cameras and be able to maintain security surveillance over a wid-
er area.
• Fewer Cables Needed: Instead of individually wiring each camera with power and then cabling each camera to
the DVR, digital systems can have multiple cameras connected to a switch, and then all of those cameras on the
switch can be connected to the NVR with a single cable.
• Positioning or Port Limitations: Because cameras merely need to be connected to your LAN network in order to
connect to your NVR, you are no longer limited by the distance between cameras and the video recorder. As the
NVR is software-based and does not have ports, you also eliminate that limitation as well.

• Power over Ethernet (PoE): Power over Ethernet switches enable your signal cables to provide power to the cam-
eras as well, reducing the need for those additional cables.

• Wireless Capability: Digital security camera systems are very good at operating within a wireless network. They
are not susceptible to the same kinds of interference that affect their analogue counterparts, so you can easily view
a live feed from more remote locations if desired.

• Encryption: A lot of digital security cameras have encryption built in, so your data is safer from the beginning of
its journey to its end.

Disadvantages
• Setup Complications: If you don’t have the network set up already and the switches in place, these can increase
the cost and labour involved in your CCTV installation, regardless of the fact that you’d need fewer cables over-
all.

• Higher Initial Cost: The cameras and equipment (aside from cables) tend to cost more on an individual basis com-
pared to their analogue counterparts (though you might need fewer of them, so the costs may balance out).
• High Bandwidth Requirements: IP security camera systems usually require a lot more bandwidth than analogue
ones. Between the higher resolution and higher frame rate, even with compression, you’re looking at around
720Kbps, and that’s before considering the newer cameras that have megapixel resolution. As a result, this could
drive your costs up.
• Storage Requirements: Higher resolution and higher frame rates mean larger files, so you’ll need a lot more stor-
age space on your hard drive to accommodate them.