3Com NBX, Installation Manual

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NBX IP Telephony Platforms 29
Table 9 V5000 System Status LEDs
6 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
NBX system using the Console connector, see
“Connecting a
Computer to a Console Port” on page 196 .
7 COM2 Reserved for future use.
8 Ethernet 1 10/100 switched Ethernet connection redundant uplink port.
Use Ethernet 1 port to connect to the LAN. Ethernet 2 port is
normally inactive and becomes active only port 1 experiences
a link failure. Both ports show a positive link status even
though only one port at a time is active. Typically, you would
connect each port to a different switch and subnet.
9 Network
Status LEDs Three LEDs for each of the 2 Ethernet ports indicate port
status:
■
LNK — Solid on indicates link; Off indicates no link.
■
10 — Blinking indicates network activity at 10 MB;
Solid on indicates heavy network activity.
■
100 — Blinking indicates network activity at 10 MB;
Solid on indicates heavy network activity.
10 Ethernet 2 A fail-over port that is active only if the Ethernet 1 port
experiences a link failure. The Ethernet ports can operate at
10 Mbps and 100 Mbps; they automatically sense the speed
of your LAN. Typically, you would connect the Ethernet 1 and
Ethernet 2 ports to a different switches and subnets.
11 VOL This adjusting screw controls the volume of Music-On-Hold.
12 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.
13 Paging This RJ-11 connector provides an audio output or a dry
contact switch connection for use with a public address
system.
14 Ext. Alert Reserved for future use.
15 System Status
LEDs S1, S2, S3 and PWR provide a visual indication of system
status. See
Table 9 , next.
Explanation S1 S2 S3
Attempting to boot from disk 0 (zero) Off On Off
Attempting to boot from disk 1 Off Off On
Boot process completed, system initializing Flashing N/A N/A
System is running On N/A N/A
Table 8 V5000 Connectors and LEDs (continued)