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Token Ring
DB9
The DB9 connector is often used to connect Token Ring stations to STP jumper
cables. The instructions which follow detail the process used to connect a DB9
connector to a station port.
NOTE
1. Align the DB9 connector of the STP cable with the DB9 port of the network
1845n49
2. Firmly press the DB9 connector over the DB9 port. Once the connector has
Token Ring
The DB9 connector looks identical to the PC EGA monitor
connector. If a Token Ring lobe connection is attached to the
monitor port, the Token Ring network will enter an error state.
This is due to the resemblance that EGA monitor current has to
the phantom current required to open a Token Ring lobe
connection.
device as shown in Figure 14-7. The D-shape of the connector should be
aligned with the D-shape of the port. The connector will only connect if it is
properly aligned.
Figure 14-7. DB9 Connector Insertion
been fully inserted, secure the connector to the port by screwing in the small
machine screws on either side of the DB9 connector.
L N K
Connecting and Terminating
14-9
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