Specifications

3.8 Concentrators
Network Modules 3–65
3.8 Concentrators
The FDDI concentrators provide for the attachment of devices such as workstations,
systems, bridges, routers, or other concentrators to the FDDI network. The following
modules are available for use in the DEChub platforms or as standalone device.
• DECconcentrator 900MX
• DECconcentrator 900TH
• DECconcentrator 900FH
NOTE
Appendix A contains details on FDDI Configuration Options.
3.8.1 DECconcentrator 900MX
The DECconcentrator 900MX has six modular Physical Media dependent
(modPMDs) FDDI ports on the front panel. The following modPMDs are available:
• Multimode fiber (ANSI MIC and SC connector)
• Single mode fiber (ST and SC connector)
• Unshielded twisted-pair (UTP)
Figure 3–21 shows the DECconcentrator 900MX network module.