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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.

Digital Subscriber Line (DSL)

The generic term that refers to the entire family of DSL technologies, such as SDSL, IDSL and ADSL. DSL refers to digital modems placed at either end of a local loop. DSL bypasses the circuit-switched lines that make up that network and yields much faster data transmission rates than analog modem technologies.

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