Windows NT Server 4.0 and 3.5x provide built-in support for ISDN. To connect to the Internet by using ISDN, you need to install and configure the Dial-Up Networking feature in Windows NT Server.
Before configuring ISDN on a computer running Windows NT Server, you need the following:
Installed internal or external ISDN adapter
ISDN telephone line service at the location where you will use dial-up networking to connect to the Internet
ISDN telephone line service at the remote location to which you want to connect, usually either your Internet service provider (ISP) or a RAS server
In general, it is recommended that you also use PPP with ISDN for connections to the Internet. This protocol is the one typically used to access the Internet over dial-up connections. To use PPP, you must have a PPP account with your ISP. If you currently have a Serial Line Internet Protocol (SLIP) account, you should request your ISP to change the account to PPP.
After you have installed your ISDN adapter and received notice from your telephone company your ISDN service is installed, you can configure Windows NT Server for your ISDN service.
Û To configure your ISDN device for ISDN-BRI Service
1. Click the Start button, point to Settings, and then click Control Panel.
2. Double-click the Network icon.
3. Click the Adapters tab.
4. In the Network Adapters list, click your ISDN device, and then click Properties.
5. Verify that the values selected in the I/O Port Base Address and Interrupt Number boxes are the values supplied by your ISDN device vendor. If not, click the correct values.
6. In the Page list, click SPID Settings.
In the Number of Terminals box, click the terminal number provided by your telephone company. For ISDN-BRI service, this number will be either 1 or 2. For more information, click the Help button.
8. In the SPID 1 box, type the value provided by your telephone company, and click OK.
– Or –
In the SPID 2 box, type the value provided by your telephone company, and click OK. If the value selected in the Number of Terminals box does not equal 2, the SPID 2 box is unavailable.
9. Click OK, and close the Control Panel.
After you have configured ISDN on your computer, you can enable PPP Multilink protocol by using the following procedure.
Û To enable Multilink on a RAS server
1. In Control Panel, double-click the Network icon.
2. Click the Services tab.
3. In the Network Services list, click Remote Access Service, and then click Properties.
4. In the Remote Access Setup dialog box, click Network.
5. In the Network Configuration dialog box, select the Enable Multilink check box, and then click OK.