A lot of RS422
equipment uses TTL level to create the +/- signal lines
- hooking it directly to RS232 may blow up your tranceivers, not work,
or both. Or, it may work - I think old Macs were tolerant enough to
do that.
Yes, Macs with RS-422 ports usually could take RS-232 (using a converter
cable) without a problem. I did this all the time.
As far as I understand it's the other way arround, a 422 Eq is given and
a 323 Terminal is about to be connected.
H.
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VCF Europa 8.0 am 28/29.April 2007 in Muenchen