Wide area experimental UUCP network

Has anyone ever done a recreation of an old wide area UUCP network over
dial-up (VoIP or otherwise)? In my experience a VoIP call using the
G.711a codec at 64 Kbps uncompressed can establish a 28.8 Kbps PPP link
(V.34) of questionable reliability, mostly because of jitter and latency
being caused by the connection between the endpoints. This was attempted
with a winmodem on one end and a hard modem on the other but pure
software solutions do exist, see https://github.com/AonCyberLabs/D-Modem

In addition to a classic SIP call, there exists an ITU-T standard for
Modem over IP (V.150.1) tough I don't know any free software
implementations of it. As an idea of how it might work, there is
commercial software available: https://vocal.com/voip/v-150-1-gateway/

In essence, something like https://wiki.dn42.us/Home but UUCP instead of
TCP/IP+BGP.