William Hargrave wrote in a message to Mike Bilow:
 WH> Is there such a thing as twisted pair Arcnet? I've got a
 WH> card here that Win95 ID's as SMC Arcnet - it has a BNC and
 WH> two US-type phone jacks (RJ-11?), plus a red and green LED
 WH> and back of DIP switches.
 WH> Has jumpers inside for IRQ's and BNC/Twist selection.
 WH> Any ideas?
Yes, there are such cards.  The PC370E was a common example.
You don't actually even need twisted pair, and these will work with ordinary 
flat telephone extension cords.  You can connect them either in a star 
topology through an ARCnet hub, or you can simply daisy-chain the cards to 
each other using patch cords.  If you don't connect cable to both RJ-11 
jacks, then you need to place a 100-ohm terminating resistor across the 
center two pins (which are the only ones used) of the unused jack.
The DIP switch block on the card usually selects the card ID, not base 
address or IRQ.  Most ARCnet cards have a very limited range for address and 
IRQ.
 
-- Mike
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