Front office communication involves log books, mail, telephone procedures, and coordination with other hotel departments. A log book records all unusual events and requests during each shift. Most hotels provide in-room telephone services while some offer voice mail. A fax machine sends copies of documents via telephone lines. Wake-up devices automatically or manually place calls to wake guests. The front office communicates daily with housekeeping, food and beverage, maintenance, security, marketing and sales to address guest needs and room status issues.