Isdn full form: The correct answer is

The correct answer is Integrated Services Digital Network Key Points ISDN, full form Integrated Services Digital Network. It i s 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. In iSeries ISDN supports to basic rate interface. The Integrated Services Digital Network (ISDN) is a set of communication protocols that enable the simultaneous digital transmission of voice, video, data, and other network services over traditional Public Switched Telephone Network (PSTN) connections. ISDN aims to enable end-to-end digital connectivity to serve a diverse set of services. ISDN or Integrated Services Digital Network, is a circuit-switched telephone network system that transmits both data and voice over a digital line. You can also think of it as a set of communication standards to transmit data, voice, and signaling. 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. [1] .