How to set your v.92 modem to work as a v.90
control panel>> modems>> Highlight the modem>> properties (button)>> connection (tab)>> Advanced (tab)>> extra settings:
control panel>> (switch to classic view) phone and modem options>> modems (tab)>> Highlight the modem>> Properties (button)>> Advanced (tab)
+ms=v90,0
or
S32=128