Telephone Busy Tone Detector

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kudjung

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busy tone detector

Hi,

Trying to do a busy tone detector. Took some search on the internet. CML make quite a few of the tone detector. But these require some interface to the micro. for pulse width detec. Anyone used to see a single chip solution.

TIA,
KJ
 

telephone busy tone

Hi kudjung


You can use this HT9020B from HOLTEK

**broken link removed**

Datasheet **broken link removed**

if you need more chips you can search in google " call progress detector chip"

S 8O KRAT
 

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