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5. LED Indicators
LED Label Description
On Link up
Off Link down
LNK/ACT
Flash Sending/Receiving
data packets
On (LNK is on) 100Mbps
10/100
Ethernet
100Mbps
Off (LNK is on) 10Mbps
On Off hook
Off On hook
FXS
Flash Ringing out
On Line is active
Off Line is inactive
LOOP/RING
FXO
Flash Ringing in
Alarm The red light “On” indicates that system has
some problem; please contact your vender.
Power “On” indicates that the power supply is
working normally.
CPU/ACT “On” indicates that the CPU is working
normally.
Registered “On” indicates that all SIP entities are
registered successful.
“Off” indicates that all SIP entities are
registered fail.
“Flash” indicates that one of these SIP
entities is registered fail.
Device
STUN “On” indicates communicate with STUN
Server once.
“Off” indicates never communicate with
STUN Server.
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