gerg@panix.com (Greg Andrews) wrote in message news:<cdn1ah$d1v$1@reader2.panix.com>...
> becker@tm-ma.de (bebe) writes:
> >I connected a modem to a sun ultra-250 on serial port /dev/cua/a.
> >Using the admintool and selecting the settings for modem bidirectional
> >everything works fine (tested with tip -19200 /dev/cua/a)
> >
> >Now I connect the same modem with the same configuration to
> >/dev/cua/b.
> >Testing again with tip -19200 /dev/cua/b there is a beep and the
> >string connected. But nothing else happens, no answer to any at
> >command.
> >
> >Is there a general problem with port b on SUN ultra-250?
> >Wo can help?
> >
>
> See document 28032 on http://sunsolve.sun.com/ for the proper
> steps on attaching and configuring an external modem on a Sparc
> machine. Search for the number "28032" and you'll find that
> document and the ones that refer to it.
>
> Make sure the modem is NOT connected to the E250's console port.
>
>
> -Greg

Installation / Configuration was done according to Sun InfoDOC 28032
for both serial ports. First on port b with the problems mentioned
above. After that for testing on port A without any problems. In
normal operation port A is occupied (UPS control).
-bb