I've read answers about "no dial tone" errors when phone line is okay (phone works fine) and cables are okay.
But in my case it's an intermittent problem. Works fine for days then suddenly says "no dial tone" (and, as with other questioners, phone line + cable are in fact fine). Usually shutting down & retrying later reveals problem has righted itself.
This time, though, it's not coming good in a hurry!
HAHR modem, 56k, Windows ME.