Total Access OPTI-3 is the industry's first OC-3 multiplexer to deliver three DS3s in a compact package one-tenth the size of similar products and at a fraction of the price. The Total Access OPTI-3 can achieve a range of 40 km using two single mode fibers and 1310 nm wavelength optics. Its fully-integrated design provides the management and redundancy features expected of carrier-class broadband multiplexers. Engineered to integrate easily into existing networks, the Total Access OPTI-3 is interoperable with GR-253 compliant SONET multiplexers and supports management functions and alarms over the DCC for manageability within the SONET framework. ??This configuration includes Total Access OPTI-3 Wall Mount Chassis (1184001L1) and two OPTI 3 Controller Cards (1184002L1).