An IP camera integrates power, video, audio, PTZ control and I/O in a single cable, which means cost savings, increased functionality and vast potential for integration.
An IP camera not only requires less cabling; it also offers many possibilities for integration. By using the input or output ports on the camera, you can enable physical access control, with or without the supervision of an operator. With built-in two-way audio, an operator can communicate verbally with a person standing in front of the camera. The camera can also use audio for detection, and trigger alarms or recordings.
For an analog PTZ camera, you need a separate cable to control the pan, tilt and zoom functions. To add audio, you need yet another cable. Together with the power and video cables, this adds up to costly and inflexible camera infrastructure.
Figure 8: The amount of cabling for an analog camera (left) compared to for a digital camera (right).