4 A NALOG LINE CARDSThis chapter tells you how to install and how to verify the successfulinstallation of Analog Line Cards.For information about installing the system hardware components, seeChapter 2.Each NBX Analog Line Card provides access for up to four analogtelephone lines into your NBX system. The NBX system treats a line cardport as an extension and assigns a unique extension number to each port.You use the Auto Discover feature to detect Line Card ports, and youdefine the starting address used by the Auto Discover process in thesystem dial plan. For a 3-digit dial plan, the default starting address is750; for a 4-digit dial plan, the starting address is 7250. The AutoDiscover process assigns the first unassigned number to the first LineCard port.Before you install any Analog Line Cards, you may want to configure theOutdialing Prefixes. For information on this topic, see “Outdialing PrefixSettings” in Chapter 2 of the Administrator’s Guide or the Help for DialPlan > Operations > Set Outdial Prefixes.Auto DiscoverAnalog Line CardsTo Auto Discover an Analog Line Card:1 In the NBX NetSet - Main Menu window, click System Configuration.2 Click the System Settings tab.3 Click the System-wide button.4 Clear all check boxes associated with Auto Discover.5 Enable Auto Discover Line Cards.6 Click OK.