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Cabling and Pinout Information
This appendix contains pinout information for CDDI A/B ports, CDDI adapter ports, concentrator master ports, and the optical bypass switch connector.
MLT-3 is the new American National Standards Institute (ANSI) draft specification developed by Cisco Systems for compression of FDDI signals over UTP copper wire. Cisco Systems products upgraded to MLT-3 will interoperate with other vendor's equipment that complies with the draft standard.
CDDI/MLT-3 installations require Category 5 equipment throughout. Two types of Category 5 modular cables are used to connect concentrators and adapters to the network---cross-connect and straight-through. (See Figure E-1.)
Figure E-1 illustrates the EIA/TIA 568B wiring standard and CDDI TX and RX pair.
Figure E-1 : Wiring Standard and CDDI TX and RX Pairs
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Figure E-2 shows the location of straight-through and cross-connect cabling for CDDI installations. Note that the cross-connect cabling is used between the concentrator and the patch pane.
Figure E-2 : Straight-Through and Cross-Connect Cabling
Figure E-3 shows the optical bypass switch connector pinouts.
Figure E-3 : Bypass Connector Pinouts
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