The Allied Telesyn range of 850nm fiber Fast Ethernet media converters allows users to extend the size of UTP networks with the use of fiber cabling. Converting between 10T and 10FL or 100TX and 100SX fiber quickly and reliably, the AT-MC115XL addresses the growing demand for a low-cost solution for fiber installations of 300 meters or less. To maximize flexibility, the converter is available in ST fiber connector style. The AT-MC115XL auto-negotiates during the link up phase of the connection to set the speed (10/100) and operation mode (Full or Half Duplex). When connecting media converters to autonegotiating Fast Ethernet switches, this media converter will automatically connect the link in either Full or Halfduplex mode, allowing the link to be established with the greatest bandwidth. The MissingLink feature allows accurate reporting to network management systems as well as allowing devices with redundant link capability to be inter-connected with these media converters, failure in one fiber link will be signaled to the switch, allowing the second link to become active.