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.
A network architecture that enables end-to-end digital connections. The network supports diverse services through integrated access arrangements and defines a limited set of standard, multipurpose interfaces for equipment vendors, network providers, and customers. Interworking with a public switched telephone network is retained.
ISDN is a set of standards for digital transmission over ordinary telephone copper wire as well as other media.
Basically a way to move more data over existing regular phone lines very quickly.
A CCITT standard for integrated transmission of voice, video and data. Bandwidths include: Basic Rate Interface - BR (144 Kbps - 2 B & 1 D channel) and Primary Rate - PRI (1.544 and 2.048 Mbps).
ISDN is a dial up digital public network for voice and data communications with charges based on line rental and usage. ISDN provides a number of advanced telephony services, such as CLI and DDI, which form the basis of today's advanced telephony applications. It is available in two forms: Basic Rote ISDN2e (2 channels) and Primary Rate ISDN30e (30 channels).
an emerging international standard that defines interfaces for simultaneous voice and data transmission through a single channel over the public network.
An international communications standard for sending voice, video, and data over digital telephone lines or normal telephone wires. ISDN supports data channel transfer rates of 64 Kbps (64,000 bits per second), but multiple channels can be purchased to increase bandwidth. There are two types of ISDN lines: Basic Rate Interface (BRI) and Primary Rate Interface (PRI). ISDN charges are typically incurred for each call or connection made. Costs increase as the number of channels used increases.
This allows the use of data transfer and voice communication simultaneously on the same phone line, it also offers faster data transfer than it's analogue counterpart but not as fast as ADSL.
ISDN is the new standard of the telecommunications technology and has replaced the analog telephone network in Germany and other countries. ISDN integrates a number of services such as telephone, fax but also video conferencing and data transfer into one system. Therefore, ISDN is suitable for the transfer of voice, text, graphics and other digital data from one terminal device to an other. Through the S0 interface of a basic connection, ISDN provides two basic channels (B channels) at 64kbit/s each and a control channel (D channel) at 16kbit/s. The digital connection to the end user has thus a combined transfer rate of 144kbit/s (2B+D). The two B channels can be used simultaneously for two different services at a bit rate of 64kbit/s.
