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OSN1500_HuaweiSDH Transmission Equipment A time slot conflict occurs when a new VC-3 service is created due to the selection of an incorrect VC12 time slot numbering policy. Therefore, when creating VC-12 and VC-3 services, pay attention to the corresponding service configuration according to the selected VC12 timeslot numbering policy.
Products
OptiX OSN 1500
Fault Class
Other
Phenomenon Description
After creating 15 VC-12 services on an STM-1 frame in the order of number 1 to 15, when creating a VC-3 service on the second VC-3 of this STM-1 frame, an alarm is generated indicating a time slot conflict.
Cause Analysis
A time slot conflict error occurs when creating VC-3 services on the second VC-3 because the 15 VC-12 services created first already occupy the second VC-3 due to the selection of the VC12 time slot numbering policy in the sequential mode (ITU-T).
Procedure
- Right-click the network element in T2000 and select "Service Configuration".
- According to the needs of service configuration and customer planning, click "Options" and select "Sequential (ITU-T)" or "Interleave" to determine the policy for VC12 time slot numbering.
- Based on the selected VC12 time slot numbering policy, create the corresponding service.
Reference Information
- Sequential way (ITU-T): VC-12s numbered 1, 4, 7, 10...... and so on belong to the 1st VC-3, VC-12s numbered 2, 5, 8, 11...... and so on belong to the 2nd VC-3, and so on.
- Interpolation: VC-12s numbered 1 through 21 belong to the 1st VC-3, VC-12 time slots numbered 22 through 43 belong to the 2nd VC-3, and so on.
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!
