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To: Ian Smith <smithi@nimnet.asn.au>, net@freebsd.org
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Subject: Re: cuaa0&ttyd0's bug?
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Ian Smith :

>Define the wiring of null-modem cable?  DTR (tied to DSR) asserts CD the
>other end, either way?  RTS asserts CTS the other end, either way?
>
> > 
> > The behavour is intentional.
> > Your cable doesn't supply DCD signal.
>
>Or it does, but RTS/CTS aren't wired right? (if used .. so many options!)
>
> > Either use a cable with DCD suport or stay with cuaa.
> > It's OK to use cuaa if you don't need dialout support.
>
>Still depends on how cuaa0 and ttyd1 are defined, no?
>
>Cheers, Ian
>
>
>  
>
yep,It's my null-modem cable's probem O:-) ,and it works excellents with 
another
null-modem!thanks again!