telephone receiver input-output characteristic 意味

• telephone receiver input-output characteristic
  受話器入出力特性[電情]
  

• telephone transmit input-output characteristic:    telephone transmit input-output characteristic送話器入出力特性[電情]
• telephone air-to-air input-output characteristic:    telephone air-to-air input-output characteristic電話機音響入出力特性[電情]
• (telephone) receiver:    (telephone) receiver受話器じゅわき