3Com NBX 100 Installation Manual page 29

Table 8 V5000 Connectors and LEDs (continued)
6 COM1
7 COM2
8 Ethernet 1
9 Network
Status LEDs
10 Ethernet 2
11 VOL
12 MOH
13 Paging
14 Ext. Alert
15 System Status
LEDs
Table 9 V5000 System Status LEDs
Explanation
Attempting to boot from disk 0 (zero)
Attempting to boot from disk 1
Boot process completed, system initializing
System is running
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
Computer to a Console Port"
Reserved for future use.
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.
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.
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.
This adjusting screw controls the volume of Music-On-Hold.
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.
This RJ-11 connector provides an audio output or a dry
contact switch connection for use with a public address
system.
Reserved for future use.
S1, S2, S3 and PWR provide a visual indication of system
status. See Table 9, next.
NBX IP Telephony Platforms
"Connecting a
on page 196.
S1 S2
Off On
Off Off
Flashing N/A
On N/A
29
S3
Off
On
N/A
N/A