IES-1000 User’s Guide
Troubleshooting 21-1
This chapter covers potential problems and possible remedies. After each problem description, some
steps are provided to help you to diagnose and to solve the problem.
21.1 DSL LED(s)
A DSL LED is not on.
Table 21-1 Troubleshooting the DSL LED(s)
STEPS CORRECTIVE ACTION
1 Make sure the DSL port is enabled (refer to the sections on the edit port setup screens).
2 Connect a DSL modem directly to the DSL port of the IES-1000 using a different telephone wire.
If the LED turns on, go to step 4.
3 Check to see that the settings in the DSL modem or router match those of the DSL port (refer to the
sections on the edit port setup screens).
If the DSL LED stays off, there may be a problem with the port. Contact the distributor.
4 Take the DSL modem to the subscriber’s location.
If the DSL LED stays off, check for a problem with the telephone wiring that connects to the
subscriber.
21.2 Data Transmission
The DSL LED is on, but data cannot be transmitted.
Table 21-2 Troubleshooting Data Transmission
STEPS CORRECTIVE ACTION
1 Check to see that the VPI/VCI settings in the DSL modem or router match those of the DSL port on
the IES-1000 (refer to the sections on the DSL port channel setup screens).
Also, make sure that the subscriber’s modem is using RFC 1483 encapsulation. If the subscriber is
using a router (with routing mode), make sure it is using ENET ENCAP.
2 Check the IES-1000’s VLAN configuration (see the VLAN chapter).
3 Ping the IES-1000 from the computer behind the DSL modem or router.
4 If you cannot ping, connect a DSL modem to a DSL port (that is known to work) on the same IES-
1000.
If the DSL modem or router works with a different DSL port, there may be a problem with the original
port. Contact the distributor.
5 If using a different port does not work, try a different DSL modem or router with the original port.
Chapter 21
Troubleshooting
