Wake when modem detects a ring stopped working

My "Wake when modem detects a ring" feature has stopped working.
zoara wrote on :

As per subject, really. My "Wake when modem detects a ring" feature has stopped working. It survives a checkbox-toggling, a restart and a (double) PRAM-zap. I can't find a prefs plist to bin, either.

Any suggestions?

    -z-