The Improved Mobile Telephone Service (IMTS) is a "0G" pre-cellular VHF/UHF radio system that links to the PSTN. IMTS was the radiotelephone equivalent of land dial phone service. It was introduced in 1964 as a replacement to Mobile Telephone Service or MTS and improved on most MTS systems by offering direct-dial rather than connections through an operator.
Read more about Improved Mobile Telephone Service: Technical Information, Limitations
Famous quotes containing the words improved, mobile, telephone and/or service:
“Now I thought I would observe how he spent his Sunday. While I and my companion were looking about at the trees and river, he went to sleep. Indeed, he improved every opportunity to get a nap, whatever the day.”
—Henry David Thoreau (1817–1862)
“From three to six months, most babies have settled down enough to be fun but aren’t mobile enough to be getting into trouble. This is the time to pay some attention to your relationship again. Otherwise, you may spend the entire postpartum year thinking you married the wrong person and overlooking the obvious—that parenthood can create rough spots even in the smoothest marriage.”
—Anne Cassidy (20th century)
“The telephone gives us the happiness of being together yet safely apart.”
—Mason Cooley (b. 1927)
“Our chief want in life, is, someone who shall make us do what we can. This is the service of a friend. With him we are easily great.”
—Ralph Waldo Emerson (1803–1882)