ONS SONET TL1 Command Guide R8.5.1 -- TST Commands

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This chapter provides test (TST) commands for the Cisco ONS 15454.



(CISCO ONS 15454) The test inserted error bits for DS1, T1, or T3 ( TST-INSERRBITS-<MOD2>) command tests the connectivity and error count on the traffic line, running on the DS1, T1, and T3 ports of the electrical card.

Usage Guidelines

Before issuing this command, bit error rate testing (BERT) must be enabled on the port and the SYNC STATUS of BERT on the port must be UP.

Note: This command is limited to DS1/E1-56 and DS3XM-12 electrical cards.





Input Format


Input Example


Input Parameters


Access identifier from the FACILITY.


Specifies the error rate to be injected for BERT. The parameter type is BITERR.

  • STOP

Stops inserting bit errors.


Inserts single bit errors.

  • 1E-3

Inserts bit errors at the1E-3 rate.

  • 1E-4

Inserts bit errors at the 1E-4 rate.

  • 1E-5

Inserts bit errors at the 1E-5 rate.

  • 1E-6

Inserts bit errors at the 1E-6 rate.

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