3Com NBX 100 Installation Manual page 27

Table 6 V3001R Connectors and LEDs (continued)
9 Ethernet 10/100 switched Ethernet connection redundant uplink ports.
Use either Ethernet port to connect to the LAN. If the other port is
connected, it becomes active only when the active port
experiences a link failure. The ports stay in that state even after
the failed port returns to a positive link state. 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.
LNK/SPEED:
Yellow — 10Mbit link
Green — 100Mbit link
Off — No link
ACT:
Flashing Green — Activity on port
Off — No activity
Table 7 V3001R System Status LEDs - S1 and S2
Explanation
Attempting to boot from disk 1 (zero)
Attempting to boot from disk 2
Flash codes for disk problems:
2 flashes: No valid disk (system is halted).
3 flashes: Two valid disks, but they are not paired (system is
halted).
4 flashes: Configuration problem (system is halted).
5 flashes: Two disks present, but no mirroring license
installed. System is running but the system is not using the
second disk.
Using disk 1 only
Using disk 2 only
Synchronizing — disk 1 is valid, disk 2 is becoming a fully
mirrored disk. Flash rate indicates progress.
If S1 and S2 stop normal flashing and intermittently flash twice,
the mirroring process has failed.
Synchronizing — disk 2 is valid, disk 1 is becoming a fully
mirrored disk. Flash rate indicates progress.
If S1 and S2 stop normal flashing and intermittently flash twice,
the mirroring process has failed.
NBX IP Telephony Platforms
S1
Off
Flashing Off
Unison flashing
Off
On
Flashing On
On
27
S2
Flashing
On
Off
Flashing