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COVID-19: As a designated essential telecom solutions provider, EXFO remains fully operational with our employees' health and safety as our top priority.

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Glossary

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.

Submarine Network

The worldwide network of submarine telecommunication cables lain on the ocean floor that connect land-based stations on all continents, except Antarctica. Unlike satellite links, undersea links have a packet-carrying capacity of terabits per second, show lower latency and are much more reliable. However, laying out, repairing and updating submarine fiber is very costly. 

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