Networks enable users to make phone calls to others connecting either through a wireless WAN

 Wireless WANs use cellular technology to provide access outside the range of a wireless LAN or metropolitan network. These networks enable users to make phone calls to others connecting either through a wireless WAN or a wired telephone system. Users can also connect to the internet to access websites or server-based applications.

Cell towers are located nearly everywhere within the U.S. and most other countries. A user connection is routed to the nearest cell tower which, in turn, is connected either to the wired internet or to another tower connected to wired internet.There are a wide range of reasons why organizations ranging from utility providers to government agencies are looking at building their own private wireless networks. They might want to ensure employees' communications in hard-to-reach places, or they might want to connect machinery to the Internet that might otherwise remain isolated.

But one big, driving factor behind some new private wireless deployments are fears about a catastrophic "Black Sky" event that would wipe out all communications networks. "Key components of a private computer engineering salary network would be integrated into hardened sites to provide a robust communications capability in the event of a Black Sky scenario that would disrupt conventional means of communications," wrote Dominion Energy Virginia, a utility provider serving around 2.6 million customers across parts of Virginia and North Carolina through 6,700 miles of electric transmission lines and 58,000 miles of electric distribution lines.