3Com NBX, Руководство по установке

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32 C
HAPTER
1: I
NTRODUCTION
Table 10 NBX 100 NCP Connectors and LEDs
1 Status LEDs S1 and S2 — Indicate operating system status.
■
S1 and S2 both flashing (approximately 2 flashes per
second). The hardware is initializing.
■
S1 on and S2 off. The operating system has started
successfully.
■
S1 and S2 are both on. The operating system software has
not started successfully.
■
S1 and S2 flash in an alternating pattern. A file system
check is in progress, possibly due to an improper
shutdown. The boot process will take longer than normal.
S3 — Indicates the status of Music-On-Hold (MOH).
■
S3 flashing (approximately 2 flashes per second). The MOH
processor is initializing. If this flashing continues for more
than 2 minutes, the processor has not started successfully.
■
S3 solid on. The MOH processor has started successfully.
■
S3 flashing slowly (approximately 1 second on and 1
second off). The MOH processor has started successfully,
but no music source is connected.
2 VOL This adjusting screw controls the volume of Music-On-Hold.
3 MOH Mini-jack (mono or stereo) that accepts Music-On-Hold audio
(maximum 2V peak to peak) from the line output of a CD
player, tape player, or other music source.
4 Paging This RJ-11 connector provides an audio output or a dry
contact switch connection for use with a public address
system.
5 Ext. Alert Reserved for future use.
6 10BT Uplink
and LINK LED RJ-45 connector provides means to connect to an external
Ethernet switch or hub. Be sure to program the switch or
router on the other end for 10 MB operation.
7 COM1 DB-9 connector that provides an RS-232 (DCE) TTY terminal
connection for access to system CLI commands and status
messages. For information on how to connect to the NCP
using the Console connector, see
“Connecting a Computer to
a Console Port” on page 196 .
8 COM2 Reserved for future use.