I'm working on a project in which I need a inbound connection via "3G usb dongle" to my Raspberry Pi. I tried the E173 and for outbound connections works fine, but not for inbound connections (in windows this works).
Does anyone has experiance with this problem? And can advice a 3G dongle that works with inbound connections?
Some of the dongles that are available where I live are E303, E1553, E3531, please let us also know if other types of modems have this functionality.