Part Number 4021203 Rev A 37
Front Panel LED Status Indicator Functions
Normal Operations (AC Power Applied)

The following chart illustrates the appearance of the LED status indicators on the

front panel of the cable modem during normal operations when AC power is

applied to the modem.

Front Panel LED Status Indicators During Normal Operations
Front Panel
Indicator
Normal Operations
1 POWER On
2 DS On
3 US On
4 ONLINE On
5
LINK* On – When a single device is connected to either the
ETHERNET or USB port and no data is being sent to or
from the modem
Blinks – When only one Ethernet or USB device is
connected and data is being transferred between the
consumer premise equipment (CPE) and the cable modem
Off – When no devices are connected to either the
ETHERNET or USB ports
TEL1 d On - When VoIP service is enable
Blinks - When Line 1 is in use
6
TEL2 led
On - When VoIP service is enab
Blinks - When Line 2 is in use
*With both Ethernet and USB devices connected to the modem at the same time,
when data is being transferred through only one of the devices (Ethernet or USB)
the indicator will illuminate continuously. Whenever data is being sent through
both data p
,
orts (ETHERNET and USB) simultaneously, the indicator will blink as
described.