The KX-FHD351 has a 10-sheet automatic document feeder, a paper tray that holds 50 sheets of letter/legal/A4-size paper and is Caller ID‹ ready with a 2-line LCD display. Its 9.6Kbps modem has a transmission speed of as fast as 15 seconds per page. Fax machine also features 20-station broadcasting.‹ Caller ID service is required from your local telephone company.