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Everything about ISDN

Set of digital telephony standards

Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the digitalised circuits of the public switched telephone network. Work on the standard began in 1980 at Bell Labs and was formally standardized in 1988 in the CCITT "Red Book". By the time the standard was released, newer networking systems with much greater speeds were available, and ISDN saw relatively little uptake in the wider market. One estimate suggests ISDN use peaked at a worldwide total of 25 million subscribers at a time when 1.3 billion analog lines were in use. ISDN has largely been replaced with digital subscriber line (DSL) systems of much higher performance. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: ISDNA 5-minute orientation
  2. Skim a recent paper: Whatever Happened to ISDN?Influential work since 2022
  3. Pick up a classic book: Introduction to broadband communication systemsThe most-reprinted book on the subject
  4. Read the landmark paper: Broadband ISDN and asynchronous transfer mode (ATM)Cited 224 times
  5. Go sideways: Primary Rate InterfaceA closely related topic
  6. Go sideways: Leased lineA closely related topic

📖 Definitions

No dictionary entry for this exact phrase.

🗂️ The subject at a glance

  1. History
  2. Design
  3. Uses
  4. International deployment

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics