| For repeater ports to autopartition, they need to see something along the
order of 32 successive collisions on their Rx pair.
Async devices have different pin assignments than repeater ports. You
may or may not do damage to the drivers on either device ...
8-pin modular jack pin-out for connecting to repeater ports
(only pins 1,2,3,6 used for 10BaseT)
---------------------------------------------------
1 Tx+
2 Tx-
3 Rx+
6 Rx-
Furthermore, 10BT ports on our repeaters (and just about everyone's)
are wired in a "crossover" fashion, so that a "straight-thru" cable
can be used to connect a station to a repeater directly.
Therefore, this is the wiring on your repeater PORT:
1 Rx+
2 Rx-
3 Tx+
6 Tx-
I have no idea what wiring standard is used on your modem device ...
there are so many standards (RJ-11, RJ-12, RJ-45, for starters).
Chances are it uses RJ-45, though.
Async Ports - RJ-45 Standard for async devices
-----------------------------------------------
1 RNG
2 DTR
3 XMT
4 XMTGND
5 RCVGND
6 RCV
7 DSR/DCD
8 unused
If you used a "straight-thru" cable when accidentally connecting
a modem to a repeater port, it sounds like pin 3 could give you trouble,
as both devices are transmitting on the same pin.
Like I said, you're guess is as good as mine, but avoid it at
all costs!
John Gillis
clearVISN developer
|