I have built a small collection of hardware and software for exploring X.25 networking. It contains routers, interfaces and bridges from the 1990s through to the early 2020s.

X.25 networks used to be common in aviation and telecommunications, but now they are rare and the hardware is becoming harder to get.

I aim to gather practical information about building and running X.25 networks using a variety of hardware and software.

If you want more, see my References page

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