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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.

Integrated-Services Digital Network Digital Subscriber Line (IDSL)

The always-on cousin of dial-up ISDN. IDSL delivers a symmetrical service of 144 kbit/s without the usage charges inherent to ISDN service.

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