3Com NBX, Руководство по установке

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44 C
HAPTER
1: I
NTRODUCTION
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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:
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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.
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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:
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BRI Port Status Lights
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Fast steady Blink — Waiting for download
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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.
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Slow Non-Symmetric Flash Pattern — Downloaded, waiting to
bind
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Off for 9-10 seconds, on briefly — Only the D the channel is up
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On for 9-10 seconds, off briefly — On call (one or both B channels)
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Amber — D channel is down
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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.
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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 .