Wagner Lipnharski wrote: > A ringing detection, and audio coupling circuit can be done easily: .. and you just happen to have a quantity of the transformers available on your web site? ;-) Darn! I can't find the link now. However, I typed what I knew of it and lo and behold! http://www.ustr.net/modem/index.shtml came up auto-magically! But that wasn't what I really wanted. Ahh, dear, ain't all this PC stuff magic? It's funny, but you figure *very* large in my Inbox when I started looking, and mostly messages I haven't read yet. But I'm presently down to only 922 unread messages! -- Cheers, Paul B.