It has been awhile since I've had to communicate directly with my modem, and I seem to have forgotten whatever it was I knew.... Upon occaision, my modem ( Rockwell k56flex) fails to hang up. It rings, gets a busy signal and doesn't hang up. However the dialer will attempt to re-dial and receives a "no dialtone" response. Meanwhile the line stays open until the phone line begins making it's off hook complaint... which has no effect on the modem. Any suggestions? i.e. is the darn thing showing signs of eventually dropping dead, or is it a simple software thing? Frank B Smith