Twisted-Pair Cable For The Distributed Management Chain - HP J2415A Installation And Reference Manual

Twisted-Pair Cable for the Distributed Management
Chain
To chain hubs together on a Distributed Management Chain, use a
"straight-through" twisted-pair LAN cable. The twisted-pair wires must be
twisted through the entire length of the cable. The wiring sequence must
conform to AT&T 258A (not USOC). 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 4 and 5 must be wired to a twisted pair.
Pins 1 ,2, 3, 6, 7, and 8 are not used in this application, although they may be
wired in the cable.
The maximum total length of all the extension cables in a chain is 185
meters.
Straight-through cable
blue/white
white/blue
Cables and Connectors
A-5