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DSL Modem Status Lights

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: 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:

Westell Wirespeed 515/516/517 Westell Wirespeed 2100 Paradyne MVL Cisco 677/677 Zyxel Presige 643

Speedstream 5660 Speedstream 5200 Fujitsu Speedport Linksys Wired: BEFSR41 Linksys Wireless: BEFW11S4

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

Westell Wirespeed 515, 516, & 517

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

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

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

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

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

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

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

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

Click here for image

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

Click here for image

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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