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Interfacing HT9200 to telephone line

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Ajit

New Member
Hi ,
Can anyone suggest how to interface the DTMF output of HT9200 IC to the telephone line ......

Thanx
- ajit
 

kinjalgp

Active Member
You can use opto-isolator, isolation transformer or a bridge rectifier to interface your chip to telephone line.
Line of warning: Attaching any device to telephone line without permission is illegal.
 
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