How Wireless Access Points Work
It is important to understand how all this works. We will use two wireless access points to connect to each other to create a point-to-point WiFi connection. Although in our case we are using 2.4GHz models, this setup can be done with 5.8GHz models as well. Each of these units has a WiFi radio and a high gain antenna which makes these units powerful enough for a mile or more of line of sight wireless transmission.
One radio is configured as the Access Point, which sends the WiFi signal that is discoverable as a SSID or available wireless network. The other radio is configured as a Station AP that acts as a receiver station or client on the wireless network. Once the two radios are talking to each other, you have a PTP (Point to Point) wireless link.
Connecting a IP Camera System to Access Points
At the Access Point Side, our setup is geared toward making it possible for the NVR recorder to communicate wirelessly to the cameras located on the Station AP. We connect the Access Point to our router or switch to which the NVR is also connected.
At the Station AP, we can connect one camera directly to the radio, or mutliple cameras to the radio by using a switch in between. We don't recommend using more than 4 cameras per AP, otherwise you will clog your wireless connection with more data than it can handle.
Let's break it down in to layman terms how the signal gets from the camera to the NVR
- The camera sends data over a network cable (through a switch if there are multiple cameras attached) to the Station AP
- The Station AP transfers that data in to a WiFi signal and beams it to the AP at the NVR location
- The AP (Access Point) converts the data received over WiFi in to a wired network signal and sends it to your router
- The router then routes the data to your NVR (also supplies internet to the NVR)
- The NVR records the IP camera streams it is receiving to a hard drive inside, and makes the cameras accessible for viewing from remote users
Using IP cameras makes it easy to make any type of camera wireless and tie it back to the same recorder where other wired or wireless ip cameras are connected.
Once you have your cameras streaming back to your security video recorder, you can even do port forwarding and make your camera or NVR accessible for remote viewing from the outside world.