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Radio Access Network (RAN)
A network in which the devices communicate through Radio Waves. A very good example of it is connecting your two sites at different locations through Radio devices e.g., Microtik, Radwin ODU (Outdoor device Units). What happens is these two devices are fixed on towers at both the sites along with the antinea. These are then configured to communicate with each other. These devices are given power through the same Cat6/Cat5 cable which is used for connecting it to the local switches with the help of POE (Power over Ethernet) connectors. The POE has two Ethernet ports (1) out (2) in. The Ethernet cable from ODU is connected to out and a patch cord is used to connect the local switch to the "In" port. Same process is carried out at other end also. Now you can connect your Clients/servers to these switches and you are sorted out. Both of the sites are connected.
Where a large distance connection is required the connection is made possible by Micro Wave Devices. You must have seen the giant towers of BSNL/AIRTEL etc. installed at many locations.
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