IP CCTV surveillance cameras

Cameras are the property of direct communication networks to enable the user to see and observe and record the voice of the events and the image over the Internet or from any mobile phone, requires an Internet service speeds of at least 512 MB, and can these cameras that operate on the same computer networking devices often have by POE automatic feeding via the wires property without the need for extra adapters equipped with Microprocessor and Sensor and RAM they are considered a small computer so they are the most expensive surveillance cameras