I recently connected my Cisco terminal setup (a laptop with a DB9-RJ45
adapter on Serial A) to a UNIX workstation with the gender adapters
shown in the ASCII diagram below. I was surprised that it worked llike
this because I expected a crossover of TX and RX, but when I pulled the
adapters apart and followed the wires from end-to-end it appears there
is no crossover. Pin numbers shown are those stamped on the connectors.
Laptop Workstation
DB9-RJ45 RJ45-DB25
tx 2 6 ---straight---6 2 tx
rx 3 3 ---through----3 3 rx
cable
Shouldn't TX and RX cross over? Why does this work?
Sorry about the slightly off-topic post.
Jonathan
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