The LF510 Fax comes standard with two 33.6 kbps, Super G3 modems with JBIG compression and can send one page in just two seconds. It delivers 23 ppm at 1200 dots per inch, and can hold up to 2,600 sheets with all trays and options. This rugged system is ideal for high-volume faxing in banks, law firms and other organizations that send and receive hundreds or thousands of pages a day. Other productive features include a 75-page automatic document feeder and 7 MB of memory with a 12-hour backup.