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Front Panel Description
The front panel of your cable modem provides status LEDs that indicate how well and at what state your cable
modem is operating. See Front Panel LED Status Indicator Functions, later in this guide, for more information
on front panel LED status indicator functions.
DPC2223 (without battery)
1
POWER—Illuminates solid green to indicate that AC power is being applied to the
cable modem. AC power must be available to recharge the optional battery.
2
DS (Downstream)—Blinks to indicate that the cable modem is receiving data from
the cable network
3
US (Upstream)— Blinks to indicate that the cable modem is sending data to the
cable network
4
ONLINE—Illuminates solid green when the cable modem is registered on the
network and fully operational. This indicator blinks to indicate one of the following
conditions:
• The cable modem is booting up and not ready for data
• The cable modem is scanning the network and attempting to register
• The cable modem has lost registration on the network and will continue blinking
until it registers again
5
LINK—Illuminates solid green to indicate that an Ethernet/USB carrier is present and
blinks to indicate that Ethernet/USB data is being transferred between the PC and
the cable modem
6
TEL 1—Illuminates solid green when telephony service is enabled. Blinks when line
1 is in use.
7
TEL 2—Illuminates solid green when telephony service is enabled. Blinks when line
2 is in use.
8
BATTERY—(Optional model only) Illuminates solid green to indicate that the battery
is charged. Blinks to indicate that the battery charge is low. Off when operating from
battery power or when the battery charge is depleted or the battery is defective.
Notes:
•
After the cable modem is successfully registered on the network, the POWER (LED
1) and ONLINE (LED 4) LEDs illuminate continuously to indicate that the cable mode
is active and fully operational.
•
LEDs may behave differently when the cable modem is running on battery power
(without AC power-optional model only). Most LEDs are disabled if the unit is
operating on battery power. In this mode, the POWER LED blinks to indicate that the
unit is operating under battery power but AC power has failed.
DPC2223 (optional model with battery)
Front Panel Description
9
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