Allied Telesis AT-iMG6x6MOD Electronics Unit - Manual (Page 33)

AT-iMG646MOD Installation Guide
Chapter 5: Turn-Up and Troubleshooting 33
Troubleshooting
This chapter contains information on how to troubleshoot the gateway in the event that a problem occurs.
Problem: Gateway is not operating correctly.
Solution: Reset the unit by disconnecting and then reconnecting the power cable.
Problem: The PWR LED is off.
Solution: Check the power cable to verify that it is not damaged and that it is connected correctly.
Problem: The SYST LED is on.
Solution: Unplug the power cable and plug it in again after 20 seconds. If the LED does not turn off, unplug
the power cable and contact Allied Telesis.
Problem: The WAN LED is off.
Solution: Check the following:
ˆ
Verify that the fiber optic port and FX/EPON fiber connector on the pigtail from the splice tray are clean.
Refer to Appendix B, “Cleaning Fiber Optic Connectors” on page 39 for information.
ˆ Verify that the connector is properly seated in the fiber optic port.
ˆ Verify that the fiber optic cable has an active light source.
Problem: The WAN (EPON connection) LED stays at red flashing (does not go to green).
Solution: Check the following:
ˆ Verify that the fiber optic port and FX/EPON fiber connector on the pigtail from the splice tray are clean.
Refer to Appendix B, “Cleaning Fiber Optic Connectors” on page 39 for information.
ˆ
Verify that the iMAP is trying to configure the ONU. (Verify that the ONU with the corresponding MAC
has been configured on the EPON port on the iMAP.)
Problem: The WAN (EPON connection) LED is ON but the iMG is not passing traffic..
Solution: Check the following:
ˆ Check the VLAN configuration to ensure the correct VLANs have been configured.
ˆ At the iMAP, check the port’s state on the ONU.
ˆ At the iMAP, check the ONUs state on the OLT.
Problem: The VOIP LED remains off when you lift up the receiver on the connected telephone.
Solution 1: Verify that the telephone cable is correctly connected, that the correct cable is being used, and
that the cable is not damaged.
Solution 2: Unplug the RJ-11 pigtail for the telephone circuit in question. Plug a POTS telephone into the RJ-
11 jack. If the VOIP LED lights up when you lift the receiver, then there may be a problem with the telephone
cable. If the VOIP LED does not light up, then there may be a problem with the AT-iMG646MOD gateway.
Contact Allied Telesis.
Solution 3: Verify the configuration. If problems persist, reset the iMG646MOD to its factory defaults
(>system config set factory) and reconfigure manually. If problems still persist, contact Allied
Telesis.