Terms used as applied to Data (and some Voice) Transmission over Copper Wire

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IDSL - (ISDN Digital Subscriber Line) - Basically a nailed-up ISDN Line

IEEE-1394 (Initially known as "Firewire") - Interface specifications targeted for desktop and laptop computers. Defines a cross-platform implementation of the high-speed serial data bus that can move large amounts of data between computers and peripheral devices. It features simplified cabling, hot swapping, and transfer speeds of up to 400 megabits per second.. Firewire speeds up the movement of multimedia data and large files and enables the connection of digital consumer products - including digital camcorders, digital video tapes, digital video disks, set-top boxes, and music systems ( See: USB

Intranet: A private network inside an organization that uses the same kinds of software found on the public Internet, usually used only for internal use. As the Internet has become more popular many of the tools used on the Internet are being used in private networks, for example, many companies have web servers that are available only to employees. Note that an Intranet may not actually be an Internet, it may simply be a network.

IP (Internet Protocol) -- Internet Protocol handles the address part of each data packet that is transmitted from one computer to another on the Internet. (A protocol is the set of rules computers use to talk to each other.) Each computer (or host) on the Internet has a unique address containing four numbers separated by periods (for example, Each file you request (for example, someone's Web home page) is identified in part by a domain name that maps to the Internet address of its computer. The file you request is in turn sent to you at your associated Internet address by the IPs at either end of the exchange.

The Internet Protocol, together with the Transmission Control Protocol (TCP), which manages the assembly and reassembly of data into the information packets sent over the Internet, form a program, TCP/IP, that each computer on the Internet uses to communicate with any other computer.

IPX (Internetwork Packet Exchange) -- A networking protocol from Novell that interconnects networks that use Novell's NetWare clients and servers. IPX is a datagram or packet protocol. IPX works at the network layer of communication protocols and is connectionless (that is, it doesn't require that a connection be set up before packets are sent to a destination as, for example, a regular voice phone call does).

Packet acknowledgment is managed by another Novell protocol, the Sequenced Packet Exchange™ (SPX). Other related Novell NetWare protocols are: the Routing Information Protocol (RIP), the Service Advertising Protocol (SAP), and the NetWare Link Services Protocol (NLSP).

ISDN (Integrated Services Digital Network) -- Basically a way to move more data over existing regular phone lines. Precursor to xDSL technologies. Can provide speeds of roughly 128Kbps over regular phone lines. In practice, most people will be limited to one or two 56Kbps channels allowing the option for two channels of either voice or data. Typical end user ISDN uses 2B+D channels. See: B Channel, D Channel

ITU-T (International Telecommunications Union - Telecommunications) International committee comprised with representative from several nations that set international communications standards. Formerly referred to as CCITT - Consultory Committee for International Telephony and Telecommunications.


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