In early 1998, modem manufacturers decided upon a new 56K modem
standard called V.90. All modems produced since that time should
meet the V.90 modem standard.
You can check your modem packaging or the modem itself to see if
the modem uses the V.90 standard or is V.90 upgradable. For more
information about your modem, you can visit the external site
56k.com, which has links to many
modem company Web sites.