Twisted-Pair "Crossover" Cable For Hub-To-Hub Network Connection - HP AdvanceStack 10Base-T Hub-12 Installation And Reference Manual

Cables and Connectors
Twisted-Pair "Crossover" Cable for
Hub-to-Hub Network Connection
For wiring between two hubs for data communications, the transmit and
receive pairs must be reversed. The twisted-pair wires must be twisted
through the entire length of the cable. See "Twisted-Pair Cable Pin
Assignments" later in this chapter for a listing of the signals used on
each pin.
N o t e
Pins 1 and 2 on the hub 1 end must be wired through a twisted pair to
pins 3 and 6 on the hub 2 end. Pins 3 and 6 on the hub 1 end must be
wired through a twisted pair to pins 1 and 2 on the hub 2 end.
Pins 4, 5, 7, and 8 are not used in this application, although they may be
wired in the cable.
A short crossover
cable (like the
HP 92214W) can be
used to adapt a
straight-through
twisted-pair cable for
"cascading" hubs
through the twisted-
pair ports.
A-6
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Crossover cable
white/orange
orange/white
white/green
green/white
straight-through
Crossover cable
in-line adapter
hub
straight-through
cable
hub