>Could you perhaps cannibalize a discarded telephone, modem, or >answering machine? >Regards, Bob Well, I guess that is an option for making a prototype but would be an inconvenient for production of small quantities. I was thinking of something that could make the trick and avoid the use of those parts. Regards, *Carlos* -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu