Cabletron Systems 100BASE-FX, Cabling Manual

Page: 164 / 192

Connecting and Terminating
14-14 FDDI
If link indicators are present for the fiber optic connection, check that they are on.
If an indicator is present but not on, that port does not have a valid link. Perform
each of the following actions until you reach a resolution of the problem and
achieve a link.
• Check that the device at the other end of the link is on.
• Verify proper cross-over of the fiber strands. Try swapping the transmit and
receive connections at only one end of the link.
• Verify that the fiber connection meets the dB loss specifications outlined in
Fiber Optic Network Requirements.
If you are still unable to establish a link, attempt to make the connection between
the devices with another fiber optic cable. If this is unsuccessful, contact
Cabletron Systems Technical Support.
FDDI
RJ45
The RJ45 connector is used to make TP-PMD connections using either UTP or STP
cabling. The instructions which follow detail the process used to connect an RJ45
connector to a station port.
1. Align the RJ45 connector with the socket of the RJ45 port. The connector will
only insert and lock if the raised locking clip of the RJ45 connector is inserted
into the correct location.
Figure 14-11. RJ45 Connector Insertion
2. Press the RJ45 connector into the port until the click of the locking clip is felt.
The pressure required to perform this should be minimal. If you encounter
resistance or excessive friction, remove the connector and check the port for
obstruction. Also, verify that the connector and the port are of the same type.
Once the locking clip snaps into place, the RJ45 connector will remain in the port.
1845n44