[rescue] Sun SBus serial cards

[Doug McIntyre]

On Thu, Jul 13, 2023 at 10:13:55PM -0400, Mark Price wrote:
> 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.

Cisco has made a _lot_ of asynch serial port cards for various platforms over the years.

The most classic was the Cisco 2511 (although I remember the serial port version of the ags).
But with the NM-16A or NM-32A add on cards, you could go into any
2600/3600/3700 router platform and make a term server out of them.
I've seen those everywhere, so should be plenty on ebay.

Although I doubt you'd want to get everything condensed down to a
small package if you are going for that nostalgia feeling, But they
even made 8-modem and 16-modem add on cards (NM-8AM/NM-16AM).

Since they made NM cards for so long, you'd want to check hardware compatibility
among different hardware platforms along the way to make sure it'd work, especially
with whatever software version you end up with since it won't be easy to upgrade.
Cisco even has current ISR routers now-a-days with asynch serial port options. (NIM-16A)

Or as others state, so many ISPs used Livingston PM2es as well.