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Understanding the types of circuit tests

Performance metrics tests

Intrusive circuit tests

Intrusive circuit tests require preparation and planning because they are more thorough. To run this type of test, we must take the circuit offline, which means it will be down temporarily. Consequently, these tests need to be scheduled in advance and you must provide a date and time for when they can be conducted.


These tests:


  • can only be run after a failed performance metrics test
  • can be run right away or scheduled for a time that won't disrupt your organization
  • require up to 30 minutes to complete
  • will interrupt your service temporarily
  • are available for DS0 and DS1 physical-transport types