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Speed Test


DSL Modem Status Lights

To verify that your CPE (Customer Premise Equipment) is functioning properly, it is important to check the status of the LEDs. LEDs indicate whether the DSL is training up to the DSLAM (WAN-side LEDs) and passing traffic in addition to whether or not it is working on your network (LAN-side LEDs). Be aware that things like line noise, bridge taps, cross-talk can impede the line.

This page contains some information that may assist you in using LEDs as a means to identify and resolve a problem:

  1. LEDS: Basic Troubleshooting - Things to try when LED status indicates a problem.

  2. LEDS: Status Indicators - LED quick reference for modems used by Expedient customers.


LEDS: Basic Troubleshooting

Tip Tip: If the status of the LEDs indicates a problem, try powercycling the equipment.

See LEDS: Status Indicators below for information on LED status. If the status of a LED or LEDs is abnormal, some things to check are as follows:

  1. Power LED: Check that the power cord is securely installed at both ends. Test the outlet to verify power; try another outlet. Unplug the unit and reapply power. Try replacing power supply. There may be a hardware problem.

  2. Ethernet LED: If the status LED for the Ethernet is abnormal, there is a problem between your computer and the DSL modem. Be sure you are using the correct cable (straight-through or cross-over), that the cable is firmly connected at both ends of the connection. See Basic Hardware Configuration and your DSL modem/router documentation for information. If you are using a hub or another device that is between the DSL modem and computer, check to make sure your cable or DSL modem is plugged into the corresponding port at the back of the router. You may want to remove the device temporarily to test. The problem may be with your Network Interface Card. See Network Interface Card (NIC) for more information.

  3. Line Sync LED: If the LED that indicates Line Sync is abnormal, the link between your location and the phone company's Central Office (CO) is not working. Make sure your cable or DSL modem is powered on. Verify that the line has dial tone; plug a phone into the jack and dial 811 and listen for a voice message with the phone number. Is the modem plugged into the proper jack? Try another jack if unsure. Is the cable between the modem and the wall plugged into the correct jack? Be sure you do NOT have a microfilter installed between the modem LINE jack and the wall jack.

    If the Line LED is on but there is no data transmission, verify the Ethernet connection. See DSL Link not established for more information.

LEDS: Status indicators

Below are short explanations of the DSL status lights of some modems used by Expedient customers:

Check your DSL modem documentation or the manufacturer's website for more information.

Westell Wirespeed 515, 516, & 517

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LED State Description
POWER Solid Green Power is ON
No Light There is no Power
READY Slow Flashing Green Power is ON, modem has passed power-up diagnostics (1 flash/second)
Moderate Flashing Green Power is ON, modem is attempting synchronization (2 flashes/second)
Solid Green Power ON, and synchronized with ADSL line
Solid Red Hardware power-up in progress
Flashing Red Unit failed power-up diagnostic
Alternating Red/Green Modem diagnostic failed
No Light There is no Power
LINK Solid Green Link established over 10BaseT Ethernet cable
No Light No 10BaseT Ethernet link
ACTIVITY Pulsing Yellow Data is being received or transmitted. Pulses should match the reception or transmission of Ethernet data.
No Light No Data on Ethernet interface

Westell Wirespeed 2100 / 2200

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LED State Description
POWER Solid Green Power ON
No Light No Power
READY Slow Flashing Power ON and passed power-up diagnostics (1 flash/sec)
Moderate Flashing Green Power ON and attempting synchronization (2 flashes/sec)
Steady Green Power ON and synchronized with ADSL line card
Steady Red Hardware power-up in progress
Blinking Red Unit failed power-up diagnostic
Alternating Red/Green Modem Diagnostics failed
No Light No Power
ETHERNET Solid Green Ethernet link established
Flashing Green Transmit or Receive Activity
No Light No link established
USB Solid Green USB link established
Flashing Green Transmit or Receive Activity
No Light No USB link established

Paradyne MVL modem

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LED State Status
PWR ON Modem has power
OFF There is no power
ALM ON An alarm condition exists
OFF No active alarms
TST ON Power on self-test in progress
OFF No active tests
LINE ON The link is active and ready to transmit and receive data
OFF The link has not been established
TX/RX ON Data transmission is in progress on the line
OFF The modem is not transmitting or receiving data
ETHERNET ON The Ethernet connection to the Ethernet hub or PC is active
OFF No Ethernet 10BaseT device is detected

Zyxel Prestige 643

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LED State Status
PWR ON Modem has power
OFF There is no power
SYS ON Modem is functioning properly
BLINKING Modem is rebooting.
OFF Modem is not ready or has malfunctioned.
LAN 10/100M ON Modem has a successful 100Mb Ethernet connection.
OFF Modem has a successful 10Mb Ethernet connection
LIN/ACT ON Modem has a successful Ethernet connection.
BLINKING Data is being sent or received.
OFF Modem is not ready or malfunctioned.
ADSL ON Modem is linked successfully to a DSLAM
BLINKING The modem is initializing or data is being sent/received.
OFF The link is down.

Cisco 677/678 Router

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LED State Status
POWER ON Modem has power
OFF There is no power
ALARM ON Configuration Error
OFF -
LAN LNK ON Connection to computer is active
OFF -
LAN ACT ON Traffic being sent between computer and router
OFF -
WAN LNK ON Connection to the Internet is active
OFF -
WAN ACT ON Traffic being sent back and forth from router to Internet
OFF -

Speedstream 5660

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LED State Description
SYS Off Power off
Solid Green Power ON
Solid Yellow Self test
Blinking Yellow Self test failure
Solid Red Hardware failure
ATM Off DSL line error
Solid Green ATM detected
Blinking Green ATM traffic
Solid Red Hardware failure
DSL Solid Green Modem is sync'd
Blinking Green Training
Blinking Green/Yellow Not sync'd
Solid Red Hardware failure
ENET Off No ethernet
Solid Green Ethernet detected
Blinking Green Ethernet activity
Solid Yellow Ethernet line error
Blinking Yellow Ethernet collisions
Solid Red Hardware failure

Speedstream 5200

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LED State Description
PWR Off Power off
Green Power ON
Red Self test failure if RED longer than 30 seconds
DSL Off Power not applied - signal DSL not detected
Green DSL line is trained and ready for data traffic
Blinking Green Steady, Blinking - DSL is training. Blinking - User traffic flowing in either direction
USB Off Power not applied - USB not connected
Green USB connected
Blinking Green USB user traffic flowing in either direction
ENET Off Power not applied - Ethernet not connected
Green Ethernet connected
Blinking Green Ethernet user traffic flowing in either direction

Fujitsu Speedport

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LED State Description
POWER Off Power off
Green Power ON
MODEM Off No DSL detected
Green Modem sync'd
Blinking Green Modem is training
DATA Off Not sync'd
Green Sync'd with full speed connection
Blinking Green Sync'd, but poor quality; physical impediment on line (e.g., load coil)

Linksys Wired: BEFSR41

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LED Status Description
LAN Indicators
POWER Green On
LINK/ACT Green
Lit
Router successfully connected to a device through the corresponding port (1, 2, 3 or 4).
Green
Flickering
Router is actively sending or receiving data over that port. Port 1 is lit when using the Uplink port.
FULL/COL Green
Lit
Connection made through the corresponding port is running in Full Duplex mode.
Green
Flickering
Connection is experiencing collisions. Infrequent collisions are normal. If the LED flickers too often, there may be a problem with the connection.
100 Orange
Lit
Successful 100 Mbps connection is made through the corresponding port.
Orange
Not Lit
Connection speed is 10 Mbps.
WAN Indicators
LINK Green
Lit
Indicates connection between Router and broadband device or network.
ACT Green
Blinking
Indicates Router is sending or receiving data over the broadband (WAN) port.
DIAG Red Indicates Router's self-diagnosis mode during boot-up and restart. Will turn off after completing diagnosis. If stays on, indicates problem.

Linksys Wireless: BEFW11S4

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LED Status Description
LAN Indicators
WLAN ACT Green Indicates wireless activity
WLAN LINK Green Indicates router's wireless functions have been enabled through web-based utility.
POWER Green Indicates router's power is on.
LINK/ACT Green
Lit
Router successfully connected to a device through the corresponding port (1, 2, 3 or 4).
Green
Blinking
Router is actively sending or receiving data over that port. Port 4 is lit when using the Uplink port.
FULL/COL Green
Lit
Connection made through the corresponding port is running in Full Duplex mode.
Green
Blinking
Connection is experiencing collisions. Infrequent collisions are normal. If the LED flickers too often, there may be a problem with the connection.
100 Orange
Lit
Successful 100 Mbps connection is made through the corresponding port.
Orange
Not Lit
Connection speed is 10 Mbps.
WAN Indicators
LINK Green
Lit
Indicates connection between Router and broadband device or network.
ACT Green
Blinking
Indicates Router is sending or receiving data over the broadband (WAN) port.
DIAG Red Indicates Router's self-diagnosis mode during boot-up and restart. Will turn off after completing diagnosis. If stays on, indicates problem.

 
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