Improved Mobile Telephone Service: Difference between revisions

The '''Improved Mobile Telephone Service''' ('''IMTS''') was a pre-[[Cellular network|cellular]] [[Very High Frequency|VHF]]/[[Ultra High Frequency|UHF]] [[radio]] system which linked to the [[Public Switched Telephone Network|public telephone network]]. IMTS was the radiotelephone equivalent of land dial phone service. Introduced in 1964, it replaced [[Mobile Telephone Service]] (MTS) and improved on most MTS systems by offering direct-dial rather than connections through a live operator, and full-duplex operation so both parties could talk at the same time.