Part Number 4021203 Rev A 13
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 (on page 36) for more information on front-panel LED status
indicator functions.
POWER – Illuminates continuously to indicate that AC power is being applied
to the cable modem
1
DS (Downstream) – Indicates continuously the status of the connection for
receiving data. Illuminates during normal operation
2
3 US (Upstream) – Indicates the status of the connection for sending data.
Illuminates continuously during normal operation
ONLINE – Illuminates continuously when the cable modem is registered on the
network and fully operational. This indicator blinks to indicate one of the
following conditions:
4
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.
LINK – Illuminates continuously 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.
5
TEL 1 – Illuminates continuously when VoIP service is enabled. Blinks when line
1 is in use
6
TEL 2 – Illuminates continuously when VoIP service is enabled. Blinks when line
2 is in use
7
After the cable modem is successfully registered on the network, the Note:
(LED 1), (LED 2), (LED 3), and POWER DS US ONLINE (LED 4) LEDs
illuminate continuously to indicate that the cable mode is active and fully
operational.