After you create a dial-up connection, you can change the settings to specify how the computer creates a dial-up connection to another computer. You can change the phone number, add dialing rules, and modify redial and hang up settings. You need to log on as an administrator to change some settings for a dial-up connection. When a computer is set up to share a dial-up connection to the Internet, these settings control the connection for the network users.
Change a Dial-Up Connection