ON 20010724@2:26:08 PM at page: http://www.piclist.com/techref/pots/dtmf.htm HK-yahoo-553 Humayun Kaleem added 'Questions: hi can any body help me program dtmf code lock ,i can get to decode the dtmf tones for the code lock ,i am using pic16f84.looking for help. hamayun_pk@yahoo.com'553 Null recipient not accepted ON 20010724@2:28:10 PM at page: http://www.piclist.com/techref/pots/dtmf.htm HK-yahoo-553 Humayun Kaleem added 'I have agreed to maintain this page. '553 Null recipient not accepted ON 20010724@2:37:04 PM at page: http://www.piclist.com/techref/pots/dtmf.htm HK-yahoo-553 Humayun Kaleem added 'I have agreed to maintain this page. '553 Null recipient not accepted