No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

Rate and give feedback :
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Uplink Signal Flow

Uplink Signal Flow

The initial values of overhead bytes are generated and alarm signals are returned to the opposite NE in the higher order uplink signal flow.

Pointer Processor and Higher Order Path Overhead Processor

NxSTM-1 payload signals from the cross-connect unit are first transmitted to the higher order path overhead processor.

The higher order path overhead processor generates N higher order path overhead bytes, and transmits them with the NxSTM-1 payloads to the pointer processor.

The higher order path overhead processor configures higher order path overhead bytes, such as J1, C2, B3, G1, F2, F3, and N1, along the uplink direction.

If an AU_AIS, AU_LOP, or HP_UNEQ alarm is detected in the downlink signal flow, bit 5 in the G1 byte is set to 1 and the G1 type is sent to the transmit end. The transmit end reports an HP_RDI alarm.

If B3 bit errors are detected in the downlink signal flow, the value of bits 1 to 4 in the G1 byte is set to the number of detected block errors (ranging from 1 to 8), and an HP_REI alarm is reported to the transmit end.

The H4 byte is not processed in the uplink direction.

The pointer processor generates NxAU-4 pointers (indicated by the H1 and H2 bytes), and adapts VC-4s into AU-4s. The NxAU-4s are then multiplexed into an STM-N signal by the multiplexing processor and transmitted to the multiplex section overhead processor.

Multiplex Section Overhead Processor

The multiplex section overhead processor sets multiplex section overhead bytes, such as K1, K2, D4-D12, S1, M1, E2, and B2, for the received STM-N signal.

If an R_LOS, an R_LOF, or an MS_AIS alarm is detected in the downlink signal flow, bits 6 to 8 in the K2 byte are set to 110 and an MS_RDI alarm is sent to the transmit end using the K2 byte.

If B2 bit errors are detected in the downlink signal flow, an MS_REI alarm is sent to the transmit end using the M1 byte.

Frame Synchronizer and Regenerator Section Overhead Processor

The regenerator section overhead processor sets regenerator section overhead bytes, such as A1, A2, J0, E1, F1, D1-D3, and B1, and sends a complete STM-N electrical signal to the frame synchronizer and scrambler.

After the STM-N electrical signal is scrambled by the frame synchronizer and scrambler, the E/O conversion module converts the STM-N electrical signal into an STM-N optical signal and transmits it through an optical port.

Translation
Download
Updated: 2019-01-21

Document ID: EDOC1100020975

Views: 75030

Downloads: 136

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next