mcs51
Newbie level 6
cm8880 and 8051
I m currently involved in developing a 8051 interface to CM8880 DTMF Tx/Rx . I m able to encode and decode DTMF but i m not able to obtain the call progress pulses properly and interpret them. Since call progress tones are region specific , i dont know the standards for Indian Telephones . Can someone help me out on this ...
I m currently involved in developing a 8051 interface to CM8880 DTMF Tx/Rx . I m able to encode and decode DTMF but i m not able to obtain the call progress pulses properly and interpret them. Since call progress tones are region specific , i dont know the standards for Indian Telephones . Can someone help me out on this ...