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:Controller card for MX2800;Incorporates STS-1 and 28 DSX-1s;Works with both AC and DC versions;Integrated modem.