What Is an Integrated Services Digital Network (ISDN)? Related Articles Does network answer machine detection really exist? What Is a Digital Twin? Definition: Contact Centre Jargon and Terminologies What is Attrition Rate and How to Calculate It © greenbutterfly - Shutterstock - 1421446100 142 Filed under - Definitions What Is ISDN? ISDN stands for Integrated Services Digital Network and it is a digital network providing 64 Kbit and 2 Mbit bandwidth voice and data circuits. A set of international standards for telephone transmission. ISDN provides an end-to-end digital network, out-of-band signalling, and greater bandwidth than older telephone services. The two standard levels of ISDN are Basic Rate Interface (BRI) and Primary Rate Interface (PRI). See Basic Rate Interface and Primary Rate Interface. Author: Robyn Coppell Published On: 2nd Mar 2023 Read more about - Definitions Recommended Articles Does network answer machine detection really exist? What Is a Digital Twin? Contact Centre Jargon and Terminologies What is Attrition Rate and How to Calculate It Contact Centre Reports, Surveys and White Papers Get the latest exciting call centre reports, specialist whitepapers and interesting case-studies. Choose the content that you want to receive. Contact Centre Reports, Surveys and White Papers Invites to Webinars & Events Weekly Newsletter