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ISDN (North America/Japan)
Our ISDN test measures your knowledge of the integrated services digital network telecommunications standard. Designed for experienced network professionals, this test covers the following topics: General Knowledge, ISDN Layers, ISDN Service, ISDN Setup, and Troubleshooting.
This test is associated with a Job Role. Please visit the Job Role Center for more details.
Once you request a test, your Personal Identification Number (PIN) will be stored in your My Plan for easy access. You will have 90 days in which to take the test you requested.