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PRELIMINARY Chapter 3: Installing the Modem
Megabit Modem 500L Installation Manual 15
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SETTING UP ADSL SERVICE
The service provider sets up the ADSL parameters for your service. The modem must have
the ADSL SYNC LED lit before you can connect sessions with your service provider. Verify
SYNC in the following section, “Checking LED Indications.”
CHECKING LED INDICATIONS
The following table describes LED indications for all operational modes. LEDs on the modem
front panel (page 16) provide continual status at-a-glance for network and modem connections.
LED State Description
PWR On green Modem has power.
Off Modem does not have power.
LAN
LINK On green A PC, hub, or other network device is connected to the modem
10/100BASE-T interface.
Off No device is connected to the modem 10/100BASE-T interface.
TX Flashing green Modem is transmitting data to devices on the LAN.
Off Modem is not transmitting data to the LAN.
RX Flashing green Modem is receiving data from devices on the LAN.
Off Modem is not receiving data from the LAN.
ADSL
SYNC On green ADSL transceiver is synchronized and in normal operation mode.
Flashing green ADSL transceiver is in a start-up sequence.
Off ADSL transceiver is not synchronized or is in a mode other than
normal operation or start-up.
TX Flashing green Modem is transmitting data to the service provider.
Off Modem is not transmitting data to the service provider.
RX Flashing green Modem is receiving data from the service provider.
Off Modem is not receiving data from the service provider.
MAR On green ADSL margin is at or above the value set by the service provider.
Off ADSL margin is below the value set by the service provider.
OH On yellow Telephone receiver is off hook.
Off Telephone receiver is on hook.