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ISDN definition

ISDN refers to a digital circuit switched network service. Basic Rate ISDN (BRI) provides for channelized (two (2) bearer and one (1) data) end- to-end digital connectivity for the transmission of voice or data on either or both bearer channels and packet data on the data channel. Primary Rate ISDN (PRI) provides for twenty-three (23) bearer channels and one (1) data channel. For BRI, the bearer channels operate at 64 Kbps and the data channel at 16 Kbps. For PRI, all twenty-four (24) channels operate at 64 Kbps or
ISDN means a switched network service that provides end-to-end digital connectivity for the simultaneous transmission of voice and data. Basic Rate Interface-ISDN (BRI-ISDN) provides for a digital transmission of two 64 Kbps bearer channels and one 16 Kbps data channel (2B+D).

Examples of ISDN in a sentence

  • It also provides access to transport, signaling (ISDN User Part (ISUP) and Transaction Capabilities Application Part (TCAP), and platforms such as adjuncts, Public Safety Systems (911), operator services, Directory Assistance Services and Advanced Intelligent Network (AIN).

  • Additional services may include digital PBXs, primary rate ISDN, ADSL, HDSL, Nx 64 kb/s, and DS1/DS3 and SONET private lines.


More Definitions of ISDN

ISDN or “Integrated Services Digital Network” means a switched network service providing end-to-end digital connectivity for the simultaneous transmission of voice and data.
ISDN means ‘Integrated Services Digital Network’ which is a set of communications standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network;
ISDN means the integrated services digital network which is an Electronic Communications Network evolved from the telephony integrated digital network that provides for digital end-to-end connectivity to support a wide range of Public Electronic Communications Services, including voice and non-voice service to which End Users have access by a limited set of standard multi-purpose customer interfaces;
ISDN means the integrated services digital network which is an electronic communications network that provides for digital end-to-end connectivity to support a wide range of public electronic communications services, including voice and non-voice services, to which end-users have access by a limited set of standard multipurpose customer interfaces;
ISDN means a set of communications standards allowing a single wire or optical fibre to carry voice, digital networks services and video;