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20
NTU Optical Network Terminals
Table 13 provides possible statuses of the LEDs.
Table 13—Light Indication of Device Status
LED
LED Status
Device Status
PON
off
device booting
green
connection between optical line terminal and device is
established
flashes green
authentication failed at optical line terminal
flashes red
no signal from optical line terminal
LAN 1..2
green
established 10/100 Mbps connection
orange
established 1000 Mbps connection
flashes
transferring data packets
on
off-hook
flashes
port is not registered or SIP authentication is not
completed on server
flashes slowly
receiving a call
Status
off
WAN interface is in static or bridge mode, PPP client is
not running
green
device was successfully authenticated on line terminal
(PPP session started in WAN interface)
orange
device is not authenticated (PPP session is not started
in WAN interface)
Power
off
device is disconnected from the power source or faulty
green
current device configuration differs from the default
one
orange
the default configuration is active
red
device booting
2.6.2
NTU-2VC
The LED indicators located on the front panel show the current state of the device.
Table 14 provides possible statuses of the LEDs.
Table 14—Light Indication of Device Status
LED
LED Status
Device Status
on
off-hook
flashes
port is not registered or SIP authentication is not
completed on server
flashes slowly
receiving a call
1..2
green
established 10/100 Mbps connection
orange
established 1000 Mbps connection
flashes
transferring data packets
off
CATV signal is not available in the provider network
red
CATV signal power < -10dBm or CATV signal power >
+3dBm
orange
CATV signal power is within -10dBm .. -8 dBm or +2
dBm .. +3 dBm
green
-8dBm < CATV signal power < +2dBm
off
device booting
green
connection between optical line terminal and device