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| 文檔標題： | TETRA AND DATA |
| 發布時間： | 2012-09-05 20:48:40 |
| 文檔簡介： | The TETRA standard has always provided for the transmission of data as well as voice. The use of status messaging and Short Data Service (SDS) provide very efficient methods for quickly sharing information with little impact on voice traff |
