4 channel dtmf & fsk caller id

[gunebakan]

hi,
i looked a lot but i couldnt find anything.i want build a circuit for 4 channel phone line caller id.
i have to use SM8223A decoder and atmel microcontroller.
i build a circuit but micro cant receive all data,when all line is ringing micro just catch 3 line's caller id.

im thinking make it with shift register for each line.4 shift register get 4 caller id then micro get them from registers.
but how can i do it? any ideas ?

 

[tpetar]

Hi Gunebakan,

What is "4 channel phone line caller id" ? What you consider under channel ?



Best regards,
Peter

 

[gunebakan]

im sorry about wrong meaning.i have 4 phone line.i want get caller id each line.all line can work same time.

Hi Gunebakan,

What is "4 channel phone line caller id" ? What you consider under channel ?



Best regards,
Peter