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Testing Interfaces

If you want to run loopback tests or bit error rate tests on channelized T3 interfaces, you must enable testing at the T3 or T1 layer. See Interface Stack for a description of the layers.

For a list of the modules that support bit error rate tests (BERTs) and remote loopback, see ERX Module Guide, Appendix A, Module Protocol Support.

Note: BERTs are supported on frame-based channelized T3 interfaces, with the exception of the CT3/T3 line module used with the 3-port CT3/T3 I/O module.


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