Check 2; Check 3 - TP-Link TD-W8901G Advanced Troubleshooting Manual

Check 2

The indicator lights on the front panel of the modem router are used to verify the unit's operation and
status between your modem, PC and ISP's network.
The table below describes what the lights mean.
Label State
On
(Steady
Green)
Power
Off
On (Solid
Green)
Flashing
ADSL
Green
Off
On (Solid
Green)
Internet
Off
Flashing
Green
On (Solid
Green)
LAN
Off
1/2/3/4
Flashing
Green

Check 3

Check the Data Rate at the bottom of the Status page.
If the numbers are approximately matched with the ADSL profile provided by your ISP (e.g.
downstream 2Mbps and upstream 512kbps), that means the device is synchronized properly with the
ISP and the quality of the ADSL line is essentially normal.
If the Data Rate number is N/A, it stands for the modem router is not synchronized with your ISP.
Resolution 3 – For ADSL Light
Please go to
Description
Power On
No Power
Synchronized
Attempting Synchronization
Not Synchronized
The PPP (Internet)
connection is successfully
established
There is no successful PPP
connection or the Router
works on bridge mode
Traffic being transmitted
over the Internet
Link between your
computer and your
DSL modem is established
No link between your PC
and your DSL modem
Traffic being transmitted
over the LAN
Off.
4 / 15
Resolution
Check ADSL light.
Resolution 3
Check Internet light
Wait 2 minutes, if the light does not turn a
solid green, refer to the Resolution 3.
Resolution 3
Check LAN lights
Check the PPP username and Password,
VPI/VCI values or refer to
Check LAN lights
The physical connection between the DSL
modem and PC is working properly.
The physical connection between the DSL
modem and your PC is disconnected or
NOT working properly
The physical connection between the DSL
modem and PC is working properly.
Resolution 5