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NE40E V800R010C00 Feature Description - WAN Access 01

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Introduction of PRBS Test

Introduction of PRBS Test


The pseudo random binary sequence (PRBS) is used to generate random data.

The circuit emulation service (CES) technology carries traditional TDM data over a packet switched network (PSN) and provides end-to-end PDH and SDH data transmission in the PWE3 architecture.

PRBS tests use the PRBS technique to generate a PRBS stream, encapsulate the PRBS stream into CES packets, send and receive the CES packets over CES service channels, and calculate the proportion of error bits to the total number of bits to obtain the bit error rate (BER) of CES service channels for measuring service connectivity.


When routers are connected over a public network, the transmission quality affects service deployment and cutover. To address this problem, use the NMS to deliver a service connectivity test command after CES services are deployed on PWs. After the test is conducted, the device returns the test result to the NMS. This shortens service deployment.


PRBS tests offer the following benefits to carriers:
  • Monitors link quality during network cutover and helps identify potential risks, improving the cutover success ratio and minimizing user complaints about operator network issues.
  • Helps speed up service deployment and cutover on a network, shortening the service launch period.
Updated: 2018-07-04

Document ID: EDOC1100027168

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