During a dead period a college coach may not have face-to-face contact with college-bound student-athletes or their parents, and may not watch student-athletes compete or visit their high schools. Coaches may write and telephone student-athletes or their parents during a dead period.
From: http://www.ncaa.org/wps/wcm/connect/public/NCAA/Resources/Recruiting+Calendars/2012-13/2012-13+NCAA+Division+I+Football+Recruiting+Calendar
Thanks, wasn't sure on the details.