Wide Area Telephone Service
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Wide Area Telephone Service[′wīd ¦er·ē·ə ′tel·ə‚fōn ‚sər·vəs]
A special telephone service that allows a customer to call anyone in one or more of six regions into which the continental United States has been divided, on a direct dialing basis, for a flat monthly charge related to the number of regions to be called. Abbreviated WATS.