FC20 with PPP service, how it works?

I’m working with EC25+ FC20 module connected to linux machine via uart.
Is there way to use pppd for both 4g and wifi (FC20) and how to use FC20
alone using PPPD service.

Thank you.

I’m sorry that I don’t quite understand what you mean. Could you please describe your requirements with more details? Besides, is the EC25 module which you’re using the open or standard version?
Here I offer you some information that may help you:
1.pppd is supported by our module and also the module can access to internet through PPP
2.You can set the linux route table to assign the default way(PPP) to access to internet

BR Zach