Connecting Cards and Devices 85Connecting DigitalLine CardsYou can install cards with the power on. To connect and configure thedigital line cards:1 Remove one of the blank faceplates from the chassis.2 Install the card securely.Verify that the edges of the card ride in the chassis guide slots, and thenslide the card in until you feel slight resistance. Press firmly on both sidesof the front of the card until you feel it seat in the connector, and thentighten the two knurled knobs.If you cannot seat the card with light pressure, remove it and check forobstructions and alignment problems.3 Wait 2 minutes (more on a SuperStack 3 NBX system with many devices)for the card to initialize.4 Auto Discover the digital line card. The Auto Discover feature finds eachport on each digital line card and assigns port extensions. You can thenperform the following tasks to configure the line card ports.Auto Discover telephones and analog line cards before you Auto Discoverdigital line cards. For more information about the Auto Discover feature,see “Using Auto Discover for Initial System Configuration” on page 91.Connecting AnalogTerminal CardsYou can install cards with the power on. To connect and configure theanalog terminal cards:1 Remove one of the blank faceplates from the chassis.2 Install the analog terminal card securely.Verify that the edges of the card ride in the chassis guide slots, and thenslide the card in until you feel slight resistance. Press firmly on both sidesof the front of the card until you feel that it is seated in the connector,and then tighten the knurled knobs.If you cannot seat the card with light pressure, remove it and check forobstructions.3 Wait 2 minutes (more on a SuperStack 3 NBX system with many devices)for the card to initialize.4 Auto Discover the analog terminal card. For more information about theAuto Discover feature, see “Using Auto Discover for Initial SystemConfiguration” on page 91.The Auto Discover process finds each port on each Analog Terminal Cardand assigns port extensions.