[rescue] Sun SBus serial cards

[Patrick Giagnocavo]

Have you considered using a separate device like the Cisco AS5200 series,
to handle the modems?  Then, just go over Ethernet to the Sparcstation - I
think that would work?

Cordially

Patrick

On Thu, Jul 13, 2023 at 9:15 PM Mark Price via rescue <rescue at sunhelp.org>
wrote:

>
> Hi Doug,
>
>
> So, you need more async serial ports than the two that came on the system?
>>
>
> Yes, I'm starting an ISP with dial-in modems, and I currently just have a
> Sparcstation.
>
>
> Most likely the listing you found was for a Sun HSI card, which in general
>> was
>> synch serial for supportint X.25 connections. Probably not what you are
>> looking for,
>> but was very common so there are lots out there.
>> There was the SAI (Serial-Async) card, but I had never seen one in the
>> wild.
>>
>
> I think you're right, I found the manual for the Sun HSI card, and it
> can't speak "low speed" serial RS-232.
>
>
> What most people did needing more async serial ports than 2 was to run a
>> terminal server
>> box over the network, such as the Xylogics or Cisco ones.
>> We had some MicroAnnex XL Xylogics boxes (8 or 16 ports).
>> Connect up a bunch of modems into the MicroAnnexXL box, and then
>> they could be setup to telnet/rsh into the Sun box automatically when
>> dialed into
>> once the user authenticated via whatever method (probably RADIUS).
>>
>
> Thanks for the tip, I'll check into Xylogics.. I actually have a Xyplex
> terminal server, but it has been a total pain to work with.  I know Cisco
> had the AS5300 with digital modems, but I'm not familiar with their other
> terminal server options, I'll check it out.
>
>
> Mark
>
>
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>
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