An international telecommunications standard that allows a communications channel to simultaneously carry voice, data, and video (digitally). Narrow-band ISDN is copper-based with speeds up to 1.544 Mbps. Broadband ISDN has data speeds of 100 Mbps or greater.
A CCITT standard for integrated transmission of voice, video and data. Allows a data transmission up to 64 kbit/s. ISDN access will be provided via Inmarsat-ISDN.
Digital telephone system that can provide high-speed (up to 128 Kbps) transmission of voice and data.