Be ware of NEs Occasionally Becoming Unreachable on OptiX OSN 1800

Summary There is a low probability that NEs report SWDL_NEPKGCHECK alarms when OptiX OSN 1800s are upgraded from V100R003C01SPC200 or earlier versions to V100R003C01SPC300. As a result, some boards cannot start up and non-gateway NEs may become unreachable. [Problem Description] Trigger condition: Huawei transmission equipment OptiX OSN 1800s are upgraded to V100R003C01SPC300..There is a low probability… Read More »



Symptom: In the deployment of the project of the OSN1500B Ring we have a problem that happened without any notice in the site with external clock reference,this alarms caused an cut of an BER test performed in the network. Alarm Information:  Those alarms are cleared without any operation and customer need know why those alarm happened.… Read More »

Reasons for logical abnormality and Fail restoration of TN serises DWDM board

Summary: When a warm reset is performed on a TN52XCH, TN52XCM, TNK2XCT, or TNK2SXM board that has not booted, the board becomes logically abnormal and cannot be restored to normal. [Problem Description] Trigger conditions: For a TN52XCH, TN52XCM, TNK2XCT, or TNK2SXM board, when the physical board is installed but no logical board is configured or… Read More »

Cautions for Bits Error Problem of SSN2PQ1-B3 Boards on the NG-SDH Product

Summary: For SSN2PQ1-B3 boards whose PCBs are manufactured by Fastprint, service bits errors occur when they are working with SSN1GXCSA/SSN1EXCSA/SSN1UXCSA/SSR2CXL cross-connect boards. [Problem Description]Fault symptoms: Service bits errors occur after the board is powered on. Trigger conditions:SSN2PQ1-B3 boards in Ver.A that are delivered on 2013-03-01 to 2013-07-31. Determine the faulty board based on the part… Read More »

Interbrand top-100, Huawei becomes the first Chinese brand on the list

Interbrand released the 15th annual Best Global Brandson Oct. 9, and a Chinese company broke into the list for the first time throughout history. Huawei, a Chinese telecommunications and networke quipment manufacturer and the world’s third largest smartphone provider was listed No. 94 and is one of five new entrants on the Best Global Brands… Read More »

[Huawei hotspot]Something you need to know about Huawei, the glory of China

Maybe you have seen its logo on MODEN, telephone, Mobile phone or 3G CDMA at home before. Maybe you have noticed its mark on routers, switches or some network equipment before. Maybe you choosed computer network as your major, and once suffered from the torment of the certification of HCIE professor. But you must bear… Read More »

Be ware of Unnecessary ActiveStandby SCC Switching on OSN 3500&7500

Abstract Because 3.3 voltage detecting circuits of SSN1GSCC02 and SSN3GSCC02 boards are of low precision, unnecessary active/standby SCC switching occurs, resulting in a possibility that NEs are unreachable to the NMS. If the ASON feature is enabled on NEs, data configuration may be lost during the active/standby SCC switching. [Problem Description] If the following conditions… Read More »

Be care for SS49SCB Boards DIP Switch on Certain Sets in the Installation State Problem

Abstract: After certain sets of huawei transmission equipment OptiX Metro 1000 V3 (SS49SCB VER.B) restart upon power failure, the SW1,SW2 DIP switch of the NE is in the installation state. As a result, the NE configuration is missing, and the services are interrupted. [Problem Description] Trigger conditions: The OptiX Metro 1000 V3 (SS49SCB board) restarts… Read More »

Notice of Flash Memory Failure in WDM Products

Summary: Because of defective incoming materials, the Spansion Flash memory units provided in a specific lot cannot erase Flash memory data. Huawei  transmission boards equipped with these Flash memory units occasionally encounter a software uploading failure, patch upgrade failure, or log recording failure; or the boards sometimes reset unexpectedly or fail to boot from a… Read More »

Troubleshoot Link STM-64 using BPA and DCU in OSN 7500II

Background How to troubleshoot link STM-64 in Huawei transmission equipment OSN 7500II using BPA and DCU because although have followed the theory guidance about power input range below , but there always find alarms B2_SD, B1_SD_B2_EXC, MS_RDI, R_LOF appears in its link (by NMS U2000) Link information and BPA specification1. Link : STM-64 2. Board : SLD64 3. Distance :… Read More »