The iConverter T3/E3 is a T3 (44.736Mbps) or E3 (34.368Mbps) coax to fiber converter, and is available as a compact unmanaged standalone unit or a managed chassis plug-in module. The iConverter T3/E3 can be used to connect to devices such as PBXs, multiplexers, routers and video servers via fiber. The iConverter T3/E3 media converters operate in pairs, extending distances over fiber, which improves noise immunity, quality of service, intrusion protection and network security. The T3/E3 supports both standard and CWDM Small Form Pluggable (SFP) transceivers, enabling adaptability to different fiber types, distances and wavelengths, providing maximum flexibility across a variety of network architectures and topologies. The T3/E3 also supports multimode and single-mode dual fiber with ST, SC and LC connectors; and single-mode single-fiber with SC connectors. Individual coax and fiber port access can be controlled, providing the network administrator with an easy mechanism for controlling usage and access to the network when installed in a chassis with network management. The T3/E3 features extensive local and remote loopback user-selectable diagnostic modes. Local loopback facilitates individual coax or fiber loopback operations. Remote loopback facilitates setting a remote T3/E3 converter to loopback mode, in order to test the integrity of the fiber and the remote converter, eliminating the cost of external hardware or support personnel at each end of the link.