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Technology evolves at a rapid-fire pace. That’s why we’ve built an easy-to-use glossary to help you better understand the terms, technologies and trends that impact your business.


A dedicated digital communication link provided by a European telephone company that offers 2.048 Mbit/s multiplexed signals over 30 channels—E1 is commonly used for carrying traffic to and from private business networks and Internet service providers.

E1 is the European counterpart of the North American T1 line.