Might this help? Its assembler, but explains the MT8870D very nicely.

http://www.kwantlen.bc.ca/electech/F...tmf_dialer.pdf




Or take a walk on the wild side and use the CM8880:

http://www.parallax.com/dl/docs/cols...l1/col/nv7.pdf



Oh oh. Melanie is going to get you. Look what I found in the archive:

http://list.picbasic.com/forum/messages/6851/6960.html?

have fun!

Don