Best and easiest way to go is WinUAE, full support for both Modems and
Telnet. My board right now has only Telnet, but I do have 2 modems hooked up
to it and will open them to the public in the near future. WinUAE makes it
very easy to go about getting everything installed. I run CNet and setting it
up on both a regular A4000 emulation and even a A4000 PPC with AOS 4.1 was
not hard at all.. I went away from the AOS 4.1 because the PPC emulation had
minor issues with Telnet, nothing major that would have prevented it from
being used but I didn't like the stability. I downgraded to 3.9 and and run
on a a regular 4000 and it runs flawlessly.. 

--- Mystic BBS v1.12 A39 2018/04/21 (Windows/32)