Although relatively expensive, cellular technology combined with digital coding of transmission may someday open ... These are assemblies of related parts encased as a single unit that easily connect or plug into a piece of equipment. ... connections to the telephone system so that firms providing a variety of services can make fuller use of the network. ... Microwave transmission is less expensive than stringing wire since the towers can be spaced many miles apart a 5 to 18 miles isanbsp;...
|Title||:||Outlook for technology and labor in telephone communications|
|Author||:||United States. Bureau of Labor Statistics|