The MX613 is a wide-band, ‘N-Tone’ non-predictive tone decoder that measures telephone system call progress tones in PABX, Pay/Feature-Phone, Fax and Modem systems.

• MX•COM MiXed Signal CMOS
• Covers Worldwide Call Progress Frequencies (300Hz TO 2150Hz)
• Decode Single or Modulated Tones
• Analog In / Serial Data Out
• µProcessor Compatible Outputs
• Speech Discrimination Ability
• Low Power Operation