3Com 3C10200 NBX Installation Guide - Page 58

58 CHAPTER 1: INTRODUCTION V3000 platforms come with 128 MB of memory. You must install an optional memory upgrade to support some features. See Table 13 on page 60 for more information. How the System Limits Interact As you add devices to an NBX system, you must keep in mind all of these limitations: ■ Total device limit for the system ■ Individual device limit for certain device types ■ License limit for certain device types ■ System memory Example: Your V3000 has the memory upgrade installed. (V3000 systems come with 128 MB of memory. You must install an optional memory upgrade to support more than 250 devices.) It is licensed for 1500 total devices and you want to configure 450 telephones: ■ You configure 6 NBX Analog Line Cards, and 12 NBX Analog Terminal Cards (for analog telephones and FAX machines). The total device count is now (6 x 4) + (12 x 4) = 72. ■ You then configure 450 3Com Telephones. The total device count is now 522. You can configure 978 additional devices (1500-522). ■ You want to configure 200 Attendant Consoles, but, because the individual device limit for Attendant Consoles is 100, you can configure only 100 Attendant Consoles. The total device count is now 622. You can configure 878 additional devices (1500-622). ■ You want to add Virtual Tie Lines (VTLs), but you can add only 48 because that is the maximum license level available for VTLs. VTLs do not count toward the device limit, so the total device count remains at 622. So, after you add 48 VTLs, you can still configure up to 878 additional devices.