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DUAL
ATTACHMENT
SINGLE
ATTACHMENT
Types A, B, and M are precision connectors, mechanically keyed to
assure proper connections to Primary-In and Primary-Out fibers.
Types A and B provide dual attachment to the primary and
secondary data paths of the main ring. Type M is used for single
attachment stations, at the workstation end of the SAS lobe.
The type S connector has a wide, centrally located keyway and is
considered a non-precision connector for use at the station end of
an SAS lobe cable. Figure 3-3, FDDI Connector Types, shows the
configurations of the four types of media interface connectors.
For a more detailed description of FDDI network characteristics
and configurations, please read the ANSI X3T9.5 specification.
FDDI RECEPTACLES
PRIMARY IN
SECONDARY OUT
TYPE A
SECONDARY IN
PRIMARY OUT
TYPE B
IN
OUT
TYPE M
IN
OUT
TYPE S
Figure 3-3. FDDI Connector Types
NETWORK CONNECTIONS
FDDI CONNECTORS
Type A
Type B
Type M
Type S
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