How share PPP connection with EMX ethernet devices

I use a modem and PPP protocol to connect EMX to my public static ip address and receive some data.Now I’d like to access a device connected to the EMX ethernet port.Is it possible to map this IP device to the public address,sharing the PPP connection?
Thanks in advance.

The way I understood from the EMX user manual is that you can use only a network interface at a time. So if you use PPP, you won’t be able to use the integrated ethernet.