Hi all people,

I am a newbei to this posting. Should I select a wrong subject posting following message kind accept my apology and advise me the appropriate subject making this posting

I am venturing to make a VoIP phone. Could I use only AT89C52 (8052), a single chip, to do following function.

1) DialPad
2) TCP/IP connection via broadband
3) ADC and DAC (analog to digital and digital to analog)
4) Modem connection via PSTN

If possible kindly advise where could I find relevant information, both schematics and programming sample.

Thanks

B.Regards
Stephen Liu