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 __   __     ___     _    _      ___      _  __  
 \ \\/ //   / _ \\  | || | ||   / _ \\   | |/ // 
  \   //   / //\ \\ | || | ||  | / \ ||  | ' //  
  / . \\  |  ___  ||| \\_/ ||  | \_/ ||  | . \\  
 /_//\_\\ |_||  |_|| \____//    \___//   |_|\_\\ 
 `-`  --` `-`   `-`   `---`     `---`    `-` --`

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發送短信 : Low delay, high quality wireless digital speech communications by shared time division duplexing