| 单词 | WATS (Wide Area Telecommunications Service) |
| 释义 | WATS (Wide Area Telecommunications Service) A PSTN offering for discounted bulk long dis- tance service provided over special trunks in the United States and Canada. In the 1970s and 1980s,WATS was highly attractive to medium and large business enterprises that placed large volumes of long distance calls. WATS services were either full-time or measured. Full-time WATS service could be used 24 × 7 at a flat rate. Measured WATS was metered and billed in increments of 0.1 hour above a monthly usage threshold of 10 hours.WATS service was banded, meaning that it was organized, and rated, in crude concentric bands that radiated from the subscriber’s home state. Band 0 WATS was intrastate, Band 1 included the band of contiguous states, Band 2 included the next concentric band of contiguous states, and so on to Band 5, which included the entire United States. As the service was directional in nature,WATS service was for outgoing calls, only, and INWATS was for incoming calls, only.Virtual WATS was organized in the same manner, but only logically so, with no need for special purpose circuits. WATS service is highly unusual in a contemporary context, having been made obsolete by discounted long distance billing plans that are independent of trunk facilities. |
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