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To install an ISDN adapter

  1. Install an Integrated Services Digital Network (ISDN) adapter and start your computer. If you install more than one ISDN adapter, you must restart your computer after you have installed the ISDN drivers. Otherwise, all available ISDN ports may not show up when you configure your network connection for ISDN.
  2. You can use Device Manager to configure your system so that your ISDN adapter knows what type of telephone switch it is connected to. The switch type simply refers to the brand of equipment and software revision level that the telephone company uses to provide you with ISDN service. There are only a few types of switches in the world and usually just one in countries/regions other than the United States.

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