TONE PULSE CONVERTERS USED IN TELEPHONE

Brand Owner Address Description
QUADVERTER Mitel Corporation 400 March Road Kanata K2K 3H4 Tone-to-Pulse Converters Used in Telephone Systems;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A method and apparatus for testing telephone sets to determine their sound quality comprising a system for repeatedly applying a sequence of pulse tones to a test telephone where the respective tone frequencies are different and within the normal human voice range.