Nortel Networks 70 Series - Manual (Page 20)

Installation and Reference for the BayStack 70 Series 10/100 Ethernet Switches
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RJ-45 10BASE-T/100BASE-TX Ethernet Ports
The RJ-45 10BASE-T/100BASE-TX Ethernet ports connect the switch to network
devices using standard unshielded twisted-pair (UTP) cable. The BayStack 70
Series 10/100 Ethernet Switches does not support shielded twisted-pair (STP)
cable. Each port adapts to the correct network speed of 10 Mb/s or 100 Mb/s
through autonegotiation with the network interface card (NIC), hub, or other
switch connected to the BayStack 70 Series 10/100 Ethernet Switches. By default,
each Ethernet port is wired as an MDI-X port to connect end stations without
using a crossover cable.
MDI/MDI-X Button
The MDI/MDI-X push button converts port 1 from an MDI-X (normal) port to an
MDI (uplink) port to allow you to connect the switch to another Ethernet switch
without a crossover cable.
Refer to Appendix B, “Cables and Connectors,” for more information about
MDI/MDI-X ports and cabling.
Note: Observe standard networking guidelines when installing or connecting a
BayStack 70 Series 10/100 Ethernet Switches to additional devices.