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Фрагмент инструкции
. . . . . . . data terminal ready FCC. . . . . . . . . Federal Communications Commission GUI. . . . . . . . . graphical user interface IRQ. . . . . . . . . interrupt request ISDN. . . . . . . . Integrated Services Digital Network ISP. . . . . . . . . . Internet Service Provider 61203153L2-20 Express 3000 User Manual Appendix E. Acronyms and Abbreviations kbps. . . . . . . . kilobits per second LCD . . . . . . . . liquid crystal display LDN. . . . . . . . local directory number LED . . . . . . . . light emitting diode LN . . . . . . . . . load number Mbps . . . . . . . megabits per second NC . . . . . . . . . no connection POTS . . . . . . . plain old telephone service PPP . . . . . . . . Point-to-Point Protocol RD . . . . . . . . . received data REN . . . . . . . . ringer equivalence number RTS . . . . . . . . request to send RX . . . . . . . . . receive RXD. . . . . . . . receive data SG. . . . . . . . . . signal ground SPID. . . . . . . . service profile identifiers TD . . . . . . . . . transmitted data TEI . . . . . . . . . terminal endpoint identifier TX. . . . . . . . . . transmit TXD. . . . . . . . transmit data UART . . . . . . universal asynchronous receiver/transmitter Y2K . . . . . . . . Year 2000 Express 3000 User Manual 61203153L2-20 Appendix F Glossary Always On Dynamic ISDN (AO/DI) A technology that allows a virtual connection to a corporate network or to the Internet while conserving costs by transmitting over the low bandwidth D channel. As bandwidth demand increases, B channels are added and then dropped as bandwidth requirement decreases. AT commands A set of commands that allows a computer to take control of a modem and to retrieve information from a modem. AT stands for attention and precedes each command. Bandwidth Allocation Control Protocol (BACP) In ISDN, a protocol that controls the addition and removal of channels from a multichannel link. bit error rate test (BERT) A diagnostic tool used to test data integrity by transmitting a known pattern of bits and then evaluating the subsequent bit error rate. Bandwidth on Demand Industry User Group Protocol (BONDING) A set of protocols that improves interoperability among multiplexers from various vendors. BONDING describes a number of interoperability modes for switched networks so that a sideband signal can be subdivided into multiple 56 kbps or 64 kbps channels and then recombined at the receiving end. 61203153L2-20 Express 3000 User Manual Appendix F. Glossary carrier detect (CD) A signal generated by a modem which operates over phone lines to indicate whether the phone carrier is present and the line can be dialed. Customer Premises Equipment (CPE) Communication equipment residing on the end-user's side of the network interface boundary. In the U.S., end-user equipment that may not be owned by the local exchange. Examples include telephones and modems. data communications equipment (DCE) A category of devices which typically includes modems and printers. DCEs interface with DTEs. datagram A Layer 3 data construct in which the datagram header contains source destination addresses for routing purposes. data terminal equipment (DTE) User terminal equipment which creates information for transmission, for example, a user's PC. data-circuit terminating equipment (DCE) Carrier's equipment that is the DTE's interface to the network. DIP switch A very small toggle switch. The Express 3000 contains two DIP switches: one for changing data rates and one for resetting default parameters. directory number In the North American Numbering Plan, the last seven digits of a telephone number. Federal Communications Commission The U.S. federal regulatory agency responsible for the regulation of interstate and international communications by radio, television, wire, satellite, and cable. Express 3000 User Manual 61203153L2-20 Appendix F. Glossary graphical user interface (GUI) A computer interface that permits users to directly manipulate objects which are displayed on the monitor. Using pointing devices (such as a mouse), the screen objects can be modified and controlled. Integrated Services Digital Network (ISDN) An international communications standard for digital transmission of data, voice, and video over telephone lines. Internet Services Provider (ISP) A company or organization that provides Internet access to the public or to other organizations, usually for a fee. Most offer a full set of Internet services (access to E-Mail, Newsgroups, FTP, and Telnet, at a minimum), and provide either hourly rates or a flat fee for a fixed number of hours of access. interrupt request (IRQ) A system of implementing computer processor interrupts (a suspension of one process to initiate another process--usually temporarily). Local Directory Number The seven digit telephone number assigned to the ISDN line. Load Number (LN) The Canadian equivalent to the U.S. Ringer Equivalence Number (REN) system (see also, Ringer Equivalence Number). plain old telephone service (PO...