Need to emulate a dial-up connection

[The House of Moth]

For part of a project I am planning I need to somehow run an app/service/hardware that allows my USB Global Village dial-up modem to *think* it's dialing up, but actually connects to a fake ISP that just takes the traffic over Ethernet.

What I have to work with:
Raspberry Pi 4b (in case that's useful)

I know, not much to work with but I figured a project such as this will require a Pi somehow. Not looking to spend a ton of money on this either so hoping it's been done before and is possible.

Cheers!

 

[AtariYinzer]

For part of a project I am planning I need to somehow run an app/service/hardware that allows my USB Global Village dial-up modem to *think* it's dialing up, but actually connects to a fake ISP that just takes the traffic over Ethernet.

What I have to work with:
Raspberry Pi 4b (in case that's useful)

I know, not much to work with but I figured a project such as this will require a Pi somehow. Not looking to spend a ton of money on this either so hoping it's been done before and is possible.

Cheers!

Something like this might work.

 

[luminescentsimian]

The dreampi would probably easiest. a Cisco/Linksys/Sipura SPA122, SPA2102, or larger model should do the job with any devices with a little configuration. The Cisco ATA 186's are "real" Cisco devices so the configuration will be different and possibly have silly Cisco license restrictions. The Pi mgetty+pppd configuration will be the same in any case.