It's actually very easy to set up an entire X.25 network by tunneling over
IP using emulated cisco routers on dynamips.
I demonstrated this to another list member some years back.
By the way, just a minor correction: while Telenet/Sprintnet was a native
X.25 network, Tymnet was most certainly not. While the ISIS bus of a Tymnet
Engine could be fitted with a wide variety of protocol interface cards
(X.25 among them), Tymnet's own internal protocol was simply known as
"Tymnet protocol", and was entirely its own thing. There were also a number
of X.75 gateways accessible on Tymnet, many on satellite links, to allow
users to connect to foreign X.25 networks.
-Mark
On Fri, Sep 7, 2018 at 8:32 AM, Fred <fcoffey at misernet.net> wrote:
On Thu, 6 Sep 2018, Jeffrey H. Johnson wrote:
Other things being worked and in various stages of completion are X.25
networking and IBM 3270 terminal support. If we
can complete the X.25
support, I envision creating a 'BAN X.25 PSDN', a virtual hobbyist
Telenet/Tymnet-like PSN network for X.25 systems. There are other exciting
Multics projects in progress by other parties as well.
Now this would be *awesome*. Over the years I've had some opportunity to
rescue some X.25 gear but declined because I didn't have a use for it.
Let's just say I spent a fair bit of time on Telenet/Sprintnet back in the
day and it would be neat to capture that nostalgia.
Fred