DSP Loopback Test
Step 2 Click Reboot
----End
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5 Troubleshooting
About Thi
T f th
s Chapter
he following table lists the contents o is chapter.
Section Description
5.1 Troubleshooting Common Faults n describes how to troubleshoot common faults.
This sectio
5.2 How to Obtain Technical Support from Huawei
This section describes how to obtain technical support.
5 Troubleshooting
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Copyright © Huawei Technologies Co., Ltd. Issue 01 (2008-06-30)
5.1 Troubleshooting Common Faults
This section describes how to troubleshoot common faults of the OT928G.
The OT928G provides status LEDs on the front panel. When a fault occurs, you can locate the fault through the LED status.
The LINK and AUTH LEDs have two blinking states: quick blinking with a blinking
frequency three times each second and slow blinking with a blinking frequency one time each second.
Table 5-1 LED status description and troubleshooting methods
LED Status Description and Troubleshooting Method
On Device temperature exceeds the alarm threshold.
z Leave more space for heat dissipation.
z Ventilate the device.
ALM
(System alarm LED)
Off There is no alarm.
On The system is powered on normally.
PWR
(Power LED) Off The system powers off.
z Check whether the power cable is connected correctly.
z Check whether the power switch is turned on.
Green on VoIP service is available.
VoIP
Green off VoIP service is unavailable.
z Check whether there is any link to connect to network.
z Check if that link can reach VoIP server (e.g.
Softswitch) through the network
z Check if the VoIP server is registered by the OT928G
The LINK and AUTH LEDs can indicate seven states of the OT928G defined in the G.984.3, as shown in Table 5-2.
Green on E1/T1 channel is in use and no alarm is generated.
E1/T1 LED
Off The E1/T1 port is not in use.
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LED Status Description and Troubleshooting Method
Red on The E1/T1_LOS alarm occurs in E1/T1 channel.
z Check whether the E1/T1 cable connector is well connected to the E1/T1 port.
z Check whether the E1/T1 cable is interrupted.
z Check whether the peer device is faulty.
Red flashing Critical alarm but not E1/T1_LOS occurs in E1/T1 channel.
Contact the vendor for maintenance.
Table 5-2 Mapping between LINK, AUTH, and device status LINK
Status AUTH
Status Device Status Troubleshooting Method
Off Off (O1) Initial-state z Check whether the OT928G has raised any loss of signal (LOS)/loss of frame (LOF) alarms. If any, check whether the optical fiber is well connected (neither too tight nor too loose).
z Check whether the GPON port ranging is consistent with the actual length of the optical fiber.
Off Quick flashing
(O2) Standby-state z Check whether the Greater
Metropolitan Challenge Association (GMAC) version of the device is correct.
z Check whether the Serial Number of the device is correct.
z Check whether the GMAC chip of the device is overheating.
Quick
z Check whether this device is added to the OLT.
z Check whether the SN of the device on the OLT is correct.
z Other troubleshooting methods are the same as that for the
standby-state.
Quick flashing
On (O4) Ranging-state The troubleshooting methods are the same as that for the standby-state.
On On (O5) Operation-state The device works in the normal state.
5 Troubleshooting
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Device Status Troubleshooting Method
LINK AUTH
Status Status
Quick flashing
Off (O6) POPUP-state Check whether the optical is well connected (neither too tight nor too loose).
On Off (O7)
Emergency-Stop-state
The device is forbidden by the vendor administrator. Please contact the vendor for maintenance.
5.2 How to Obtain Technical Support from Huawei
This section describes how to obtain technical support from Huawei.
You can go to the website (http://support.huawei.com) to ask for technical support. First you need to apply for an account.
When you log in, select the location My support > My Requests to display a request page.
You need to click New Request to create a new ticket, where you should fill in some important information for help.
Only device users (of the companies or organizations that have purchased the products or services of Huawei) who have been authorized by Huawei have the authority to view the My Request button.
Summary
This field contains 240 characters, so only a brief summary can be added. The summary should be clear and concise.
The summary field should include product name, and provide a summary of the reported issue.
The format should be product name + summary of the issue.
Details
This field contains 5000 characters for information and needs to be as detailed as possible. It should contain the information as follows:
z Issue description
The detailed description of the issue, including:
When the issue occurs Fault phenomena
What operations have been implemented by the customer Other relevant information of the issue that the customer reports
z Networking
The detailed networking (or attach detailed network diagram).
z Software/Hardware version
This part should include the detailed software and hardware versions of the main control board and the faulty board.
z Customer/Engineer information
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The name, contact number and the Email address (if possible) of the customer or engineer who reports the fault.
z Other information
The engineer should attach information of configuration, operation log and alarm information.
Submit
When you finish all the contents, you can click the Save button to save your ticket. The system saves and displays the information you have filled in.
You can click the Submit button to submit your ticket.
SmartAX OT928G
User Guide A Acronyms and Abbreviations
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