Hi, What do you want to do when the ring signal is not present (on hook or off)? Regards, Dave Steve Kasm wrote: > 30 Hz @ 38.0v A.C with 2 sec Interruptions = On Hook No reset > > 30 Hz @ 7.20v A.C with 2 sec Interruptions = Off Hook Reset Pic -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu