3Com 3C10200 NBX Installation Guide - Page 44

44 CHAPTER 1: INTRODUCTION ■ Each status light turns amber briefly, starting with span 1 (channels D, B1, and B2) and continuing through span 4 (channels D, B1, and B2). After approximately 30 seconds, the B1 status light on all four spans turns green for approximately 1 minute. All lights turn off when the Auto Discover process is complete. After you connect an ISDN BRI span to a port: ■ The D light turns green if the span is operating properly and turns amber if there is a problem. For a span that is operating properly, when the NBX system initiates or receives a call on a B channel, the corresponding light initially turns amber. When the call is answered, the light turns green. ■ Console - This DB-9 connector provides an RS-232 (DCE) TTY terminal connection for maintenance access. Each 3C10164D (Figure 15) card has the following lights and connectors: ■ BRI Port Status Lights ■ Fast steady Blink - Waiting for download ■ Solid On - Downloaded, burning the flash memory CAUTION: Do not disconnect power while the flash memory is being updated. Doing so may corrupt the flash memory and the card might have to be replaced. ■ Slow Non-Symmetric Flash Pattern - Downloaded, waiting to bind ■ Off for 9-10 seconds, on briefly - Only the D the channel is up ■ On for 9-10 seconds, off briefly - On call (one or both B channels) ■ Amber - D channel is down ■ 10/100 Uplink - This RJ-45 Ethernet connector connects the card to an external LAN. You can use this connector to isolate traffic or to connect the card to the LAN if the card is placed in a chassis that does not have LAN connectivity, such as an NBX 100 chassis that does not have an NCP or a hub card. ■ Console - This DB-9 connector provides an RS-232 (DCE) TTY terminal connection for maintenance access. For information on how to connect a computer to the Console port, see "Connecting a Computer to a Console Port" on page 196.