Allied Telesis AT-SBx31CFC960 - Manual (Page 143)

SwitchBlade x3106 Chassis Switch and AT-SBx31CFC960 Card Installation Guide
143
The MDI/MDIX wiring configuration of the ports is set automatically with
automatic MDIX detection. You may not disable this feature on the ports.
For automatic MDIX detection to work successfully, the remote device
connected to a port must also support the feature. If it does not, a port on a
line card defaults to MDIX. This may require the use of a crossover cable.
Here are the guidelines to choosing straight-through or crossover cabling
for the ports:
 You may use straight-through cables on ports that are connected
to network devices that operate at 1000 Mbps.
 You may use straight-through or crossover cables on ports that are
connected to network devices that support automatic MDIX
detection and that operate at 10 or 100 Mbps.
 You must use straight-through cables on ports that are connected
to network devices that have a fixed wiring configuration of MDI
and that operate at 10 or 100 Mbps.
 You must use crossover cables on ports that are connected to
network devices that have a fixed wiring configuration of MDIX and
that operate at 10 or 100 Mbps.
Connecting
Cables to the AT-
SBx31GT40 Line
Card
Here are a few additional guidelines to connecting cables to ports on the
AT-SBx31GT40 Line Card:
 The ports require the RJ point 5 cable connector shown in
Figure 84.
Figure 84. RJ Point 5 Cable Connector for AT-SBx31GT40 Line Card
 To connect a cable to a port in the top role on the line card, orient
the connector with the release tab on top. To connect a cable to a
port in the bottom role, orient the connector with the release tab on
the bottom. Refer to Figure 85 on page 144.
 To remove a cable from a port, pull gently on the release tab and
slide the cable connector from the port.