ADTRAN solutions maximize performance, lower costs, and help companies achieve the best return on investment. ADTRAN is committed to achieving success for customers by offering "best-in-class" products with outstanding value. Let ADTRAN work for you.PRODUCT FEATURES:19-inch rackmount design;Keylock security access;Independent frame ground connections;Compact configuration;Convenient access to front and back of chassis;8 hours minimum backup battery service;Factory wired for quick installation and turn-up.