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The OSN3500 SSN4SL64 single-board feature code is the code located after the single-board name in the single-board bar code.The single-board feature code of SL64 is used to describe the type of optical interface.There are N1 and N2 versions of SL64, and the main difference between the versions lies in the support of TCM function and AU-3 service.The SL64 single-board supports the functions and features of receiving and transmitting 1-channel STM-64 optical signals, overhead processing, etc. The N1/N2SL64 single-board consists of an optoelectronic converter module, interface, logic control module, and power supply module. Functions and features.The N1/N2SL64 single board consists of an optoelectronic converter module, an SDH overhead processing module, a logic control module, and a power supply module.The panel of the SL64 has single board indicators, interfaces, barcodes, laser safety level labels, and APD alarm labels.
Misconfiguration causes the N2SL64 single board to always report the HP_UNEQ alarm
When a single board is offline, data cannot be downloaded to that single board. So do not create a service when the single board reports the BD_STATUS alarm.
OptiX OSN 3500
OptiX OSN 3500
Failure Category
- Other
- HP_UNEQ
- BD_STASTUS
Phenomenon Description
Network: A (11-SL64) ------ (8-SL64) B (11-SL64) ------ (8-SL64) C (11-SL64) --- D --- A, OSN 3500 two-fiber bi-directional STM-64 ring. As shown in Figure 1.
Create an E1 service from A (2-PQ1-1) to C (2-PQ1-1), using VC4 1. Thereafter, there is an HP_UNEQ alarm on the 8-SL64-1-1 channel at the pass-through node B, 8-SL64-1-1. Querying the C2 byte, it is found that the C2 byte received on channel 8-SL64-1-1 at site B is 0, but the C2 byte sent on channel 11-SL64-1-1 at site A is 0x02. The C2 byte sent by site A is not the same as the C2 byte received at site B.
Cause Analysis
- Service configuration error.
- Software problem.
Procedure
- Check the history alarms and find that the SL64 board in slot 8 of site B has a BD_STATUS alarm.
- Go to activate the service at site B.
- After activating the service at site B again, the HP_UNEQ alarm disappears.
Reference Information
Cause: When the SL64 board is offline, data cannot be downloaded to the board at the same time.
Recommendation: Do not create services when the BD_STATUS alarm is reported on the single board.
The technical information in this chapter and the related SDH equipment troubleshooting procedures are provided by Shenzhen Optical Transmission Network Technology Co. Huawei SDH optical transmission equipment, SDH transmission equipment sales phone: 13430988088 Welcome to call!
