Description:
...incorporates the necessary functions to produce a high quality hands-free speaker-phone system. The applications include household and office speaker-phones, intercom systems, hand free kit for mobile phones, and others. ... ...FEATURES *All necessary level detection and attenuation controls for a hand-free telephone included. *Background noise level monitoring with long time constant.... ...QW-R108-006,A If UTC MC34018 is to be powered from a regulated supply( not the Tip and Ring lines) of less than 6.5 volts, the configuration of Fig 14 may be used so as to ensure to that VCC is regulated