Audiocodes FXS gateway registers to 3CX IPPBX December 16, 2021 December 16, 2021 557 views By grace After you migrate the phone system from analog PBX to IP PBX, if you have some analog phones, you can use the FXS gateway to make a connection between analog phones and IPPBX, at this time, FXS gateway needs to Read More Audiocodes FXS gateway registers to 3CX IPPBX