If your base station has a modem, use the Modem pane of Internet settings to set up specific features for your modem and your dial-up connection.
Choose how long the modem will wait before disconnecting when it's idle.
Set the country code for your modem.
Choose either v.90 or v.34 modem protocol. Using v.34 may help to solve problems if you have difficulty using v.90.
Choose tone or pulse dial, depending on your phone service.
Select Automatically Dial to set your modem to dial your Internet service provider (ISP) when you open a web browser or send email.