We need install two FTP Servers – FileZilla server is for LTE data transfer, and Microsoft IIS is for CDMA data transfer.
Also we need make FileZilla server binds to IP 192.168.0.70, while Microsoft IIS server binds to IP 192.168.0.125. Otherwise we can't start these two FTP Services at same time. Refer to SR3920 MI section 3.6, 3.7 and 3.11 on how to configure it.
Regarding to the IIS FTP Service, we need also check following stuff: