User`s manual

Moxa Managed DSL Ethernet Extender Quick Diagnosis and Easy Management
4-2
On-site Troubleshooting
The LED indicators of IEX series provides complete system and link status for quick on-site troubleshooting. When the
system boots up, the connected pairs will start the CO/CPE detection before negotiating the connection speed over the
DSL link. The CO/CPE LEDs will alternate colors (between green and amber) until both devices have finalized the setting.
Then the devices will determine the best transmission rate and the LINK/ACT LED will blink slowly. After the training
process is complete, the SPEED/SNR LED will indicate the connection quality of DSL link. Fewer bars on the LED display
means a poor SNR or low connection speed. The device will try to maintain a speed for best transmission quality.
NOTE
If the DSL link can’t be finalized within 7 minutes, please check line conditions and configurations: e.g.
distance, speed setting, environmental noises
, etc.
The IEX series is designed for point-to-point Ethernet transmission over a DSL link. The connection distance between
connected pairs can be many kilometers and on-site troubleshooting can be difficult to perform with insufficient visual
information. The STATE LED helps to indicate the location of segment failure, allowing network operators to immediately
determine the location and quickly recover from a link failure