3Com 3C840 manual WAN Connection Problems

13-6CHAPTER 13: TROUBLESHOOTING

WAN Connection Problems

Symptom	Possible Causes	Corrective Action
SDSL LED is Off.	WAN (modem) cable	Check that one end of the WAN
OfficeConnect Remote	is not connected.	cable is fully plugged into the wall.
840 Manager Interface		Check that the other end is fully
Status indicates that		plugged into the SDSL port in the
interface atm:1/hdlc:1		back of the OfficeConnect Remote
is down.		840.
	WAN cable has been	Replace the cable with another DSL
	damaged.	cable.
	There is a problem at	Contact your service provider.
	the other end of the
	SDSL connection that
	causes the SDSL
	negotiation to fail.
SDSL LED is Off or	SDSL link is down.	Contact your service provider.
goes On briefly then
turns Off.

OfficeConnect Remote 840 Manager ATM status cell delineation fails and no idle cells are being received.

SDSL link is down. Contact your service provider.

There is a problem at	Report the problem to your service
the central office	provider.
equipment (the other
end of the SDSL line)
such that no idle cells
are being transmitted
or there is a corrupt
line.