[comp.dcom.modems] Baud-sensing 'getty'

csg@pyramid.pyramid.com (Carl S. Gutekunst) (09/25/87)

In article <467@devon.UUCP> paul@devon.UUCP (Paul Sutcliffe Jr.) writes:
>There is one small side-effect to this solution.  If, let's say, you have
>your modem speaking at 2400 baud to the CPU, and a person logs on at 300
>or 1200 baud, the modem will handle the speed conversion.  But, since
>the modem is speaking at 2400 baud to the CPU, a "stty" command will show
>the line as "speed 2400".  This may confuse novice users.

A much more severe problem with using speed-converting modems on dialin is
that the modem's buffering will cause long delays on response to keyboard
commands that stop or flush output -- like <CTRL-O> (new BSD) and <CTRL-C> or
whatever interrupt character you use. It may also interfere with some of the
usual tty semantics, like IXANY (a.k.a. !DECCTLQ), because the modem now has
its own flow control in addition to any flow control used by the user.

<csg>