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Status LEDs 111
Models 2603, 2621, and 2635 Getting Started Guide 12 • System Status
Status LEDs
The LEDs indicate the status of the Power, the WAN, Sync Serial port, and the Ethernet connection.
All LED indicators will present the same looking profile (e.g., clear) when unlit due to being single color, water
clear, high efficiency LEDs.
Table 6. Status LED descriptions
Power Green ON indicates that power is applied. Off indi-
cates that no power is applied.
T1/E1 Link Green Solid green: connected
Off: disconnected
TD Green Green: indicates a binary ‘0’ condition
off: indicates a binary ‘1’or idle condition
RD Green Green: indicates a binary ‘0’condition
off: indicates a binary ‘1’ or idle condition
Sync Serial TD Green Green: indicates a binary ‘0’ condition
off: indicates a binary ‘1’or idle condition
RD Green Green: indicates a binary ‘0’condition
off: indicates a binary ‘1’ or idle condition
CTS Green ON: indicates the CTS signal from the router is
active, binary ‘1’
off: indicates CTS is binary ‘0’
DTR Green ON: indicates the DTR signal from the DTE
device attached to the serial port is active,
binary ‘1’
Ethernet Link Green ON: indicates an active 10/100 BaseT connec-
tion
100M Green ON: connected to a 100BaseT LAN
Off: connected to a 10BaseT LAN
Tx Green Flashing: when transmitting data from the router
to the Ethernet
Rx Green Flashing: when transmitting data from the Ether-
net to the router.