I agree with you.
Serial link is not always full duplex. It depends of the relation between
the two entities : primary/secondary (Normal mode : SDLC -> SNRM frame) or
Balance mode (LAPB -> SABM frame).
--
Stephane LITKOWSKI
Student in a french computer science school
EPITA Telecom & Network specialization
CISCO Certified Network Associate
EMail : [EMAIL PROTECTED]
""Howard C. Berkowitz"" a icrit dans le message news:
[EMAIL PROTECTED]
> >Most are full duplex, so in those cases, no you shouldn't..
> >
> >Brian "Sonic" Whalen
> >Success = Preparation + Opportunity
> >
> >
> >On Thu, 23 Aug 2001, Wright, Jeremy wrote:
> >
> > > Can you have collisions on a serial link? Thanks again.
> >
>
>
> I'm in general agreement, but be aware that you might run into IBM
> BSC or SDLC networks that use polled multidrop on half-duplex
> facilities. Rare now, but you might see them on things like
> automatic teller machines, point-of-sale terminals, etc. -- those
> being critical business applications that work, so no one wants to
> fiddle with them.
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