ISDN, or Integrated Services Digital Network, is a communication technology that allows voice calls, video calls, and data to be sent digitally over regular telephone lines. In simple terms, ISDN is a system that upgrades old phone lines so they can do more than just voice calls. ISDN stands for Integrated Services Digital Network, a set of standards for digital transmission of voice, video, data, and other network services. Learn more about ISDN, its history, and its popularity worldwide. Key Points ISDN- Integrated Services Digital Network It is a circuit-switched telephone network system that transmits both data and voice over a digital line. It was designed to move outdated landline technology to digital. These digital lines are commonly telephone lines and exchanges established by the government. ISDN stands for Integrated Services Digital Network. It is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network. The key feature of ISDN is that it integrates speech and data on the same lines, not available in the classic telephone system.
