Currently working on a handful related to retro tech and networking. None of it is very monetizable. 1. I have a handful of old ISDN video terminals that use t

Currently working on a handful related to retro tech and networking. None of it is very monetizable. 1. I have a handful of old ISDN video terminals that use the H.320 standard for video conferencing. Working on getting these up along with a server that will let me use them with more modern tech. 2. I started briefly on a few prototypes for an X.25 implementation. I haven't worked on this in a while. X.25 is still mildly confusing to me. 3. I have a CMTS and a decent SDR to eventually maybe build my own DOCSIS modem prototype. I'll probably use the SDR for a handful of other things in the future. 4. Provided I get any of the prior done, I might try to build a token ring stack. 5. Even further out, there are a number of technologies I want to play with, notably visible light communication. Perhaps when 802.11bb is released I’ll take a look. The cool thing is I have all these old network protocol analyzers from the 80s-90s that will actually get used for a "practical" reason. Funny enough it's significantly cheaper to buy these than to get the cards to implement T1/E1, V.35, RS449, etc. interfaces for a modern PC. Eventually, I want to build a custom piece of furniture to house and rack a lot of my equipment for my retro network, complete with modular panels on the side for access to serial / network ports along with servers and my dummy terminal. I don't think I'll have the space, skills or environment for this any time soon, though.