I'm working on a project that will need an old modem installed into it. It will naturally run off of a RJ11 jack. I'm planning on either using the PIC24F(For pricing reasons) Or possibly a DSPIC33. I've seen on the DSpic AN's that they have a softmodem library that seems like it will do everything I need. Basically I need it to call a phone number when triggered and play a recorded message. Then take a signal to acknowlege the message was received. My questions is, would this library and functionality work with a dspic series? Would it be possible to port the code over to a PIC24f? Other then resistors, caps and support components will I need any other IC's to make the modem work? and finally will I need an audio chip to have mic and playback features or can I do this in the PIC24 or DSPIC? Thanks for any help or explanation you guys can give me.