><><><><><><><><><><><><><><><><><><><><><><><><><><><><> ********************************************************* * * * * * Database of Network Terms * * Part 9 * * * * Another Modernz Presentation * * * * by * * Digital-demon * * * * (C)opyright March 4th, 1992 * * * ********************************************************* <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> ******************************************************************************* The Modernz can be contacted at: MATRIX BBS WOK-NOW! World of Kaos NOW! World of Knowledge NOW! St. Dismis Institute - Sysops: Wintermute Digital-demon (908) 905-6691 (908) WOK-NOW! (908) 458-xxxx 1200/2400/4800/9600 14400/19200/38400 Home of Modernz Text Philez <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>< <*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*> <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> TANSTAAFL The Church of Rodney - Sysop: Tal Meta (908) 830-TANJ (908) 830-8265 Home of TANJ Text Philez <*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*> Syndicate Bbs Sysop: Hegz (908)506-6651 300/1200/2400/4800/9600 14400/19200/38400 Modernz Site TLS HQ <><><><><><><><><><><><><><<><<><><><><><><><><><><><><><><><><><><><><><><><>< The Global Intelligence Center World UASI Headquarters! Pennsylvania SANsite! (412) 475-4969 300/1200/2400/9600 24 Hours! SysOp: The Road Warrior <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>< The Lost Realm Western PA UASI site! Western PA. SANfranchise (412) 588-5056 300/1200/2400 SysOp: Orion Buster <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>< The Last Outpost PowerBBS Support Board UASI ALPHA Division NorthWestern PA UASI site! (412) 662-0769 300/1200/2400 24 hours! SysOp: The Almighty Kilroy <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>< Hellfire BBS SANctuary World Headquarters! New Jersey UASI site! (908) 495-3926 300/1200/2400 24 hours! SysOp: Red <*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*> BlitzKreig BBS Home of TAP (502)499-8933 <*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*> I-bit ===== Information bit. I/O === Input/Output. I/O Controller (IOC) board ========================== A logic board in the Pico-Engine; an independent processor that handles the transfer of data through eight I/O ports and a TTY port controlled by EP software. I/O Controller (IOC-II x) board =============================== A logic board in the Turbo Engine specifically designed for controlling serial data communications lines. Each board contains a CPU, memory, and serial interface devices. These boards are used with Paddle boards via the VMEbus. There are two types of IOC-II boards: IOC-II 4 and IOC-II 8. IOC-II 4 supports up to 4 high-speed ports, using the RS-422 or V.35 Paddle board. IOC-II 8 supports up to 8 medium-speed ports, using the RS-232-C Paddle board. I/O Controller Operations (IOCP) board ====================================== An IOC board debugging tool that runs under Turbo-SCP. Manager (IOCOM) I/O Control Processor I/O Controller (IOC-II x) board. A logic board in the Turbo Engine specifically designed for controlling serial data communications lines. Each board contains a CPU, memory, and serial interface devices. These boards are used with Paddle boards via the VMEbus. There are two types of IOC-II boards: IOC-II 4 and IOC-II 8. IOC-II 4 supports up to 4 high-speed ports, using the RS-422 or V.35 Paddle board. IOC-II 8 supports up to 8 medium-speed ports, using the RS-232-C Paddle board. IBM 4 of 8 ========== A constant ratio code that has exactly four 1s and four 0s in every byte and has a total of 70 different characters. IBM AT ====== An IBM personal computer; a 286-based machine. IC Integrated Circuit. ====================== Also, Inter-LATA Carrier. IDA ISIS Data Area. =================== A section of memory (segment F) that contains global, read-only information, such as the system clock and Dispatcher message lengths. identifier ========== A label used in source code files (Tymfiles, Configuration files, and Initialization files) that identifies a variable and associates it with an actual value. In the example ILL EQ 1, ILL is the variable and is equated to the value 1. Also called label. IDN === International Data Number. IEC === International Electrotechnical Committee. IEEE Institute of Electrical and Electronics Engineers. An organization of scientists and engineers whose purpose is the advancement of electrical engineering, electronics, and allied branches of engineering and science. IF == Interface. A shared boundary between two subsystems or two devices, systems, or programs. Also, the interaction between two devices or systems that handle data in different ways: different codes or formats. IHSA ==== ISIS High-Speed Access. An ISIS product that works in conjunction with the RJE interface to service bisynchronous customers. It offers bisync-to-async (EBCDIC-to-ASCII) conversion and virtual circuit mode. This is a customized service for running specialized applications. IIX === Interface Information Exchange. A BT North America internal protocol that allows interfaces within the TYMNET network to communicate information, such as choice of dialects at a level below that of the end user. Each end of the circuit must verify that the other end is IIX-capable before communication begins. IMF === Information Management Facility. implementation ============== An NTD development phase that details low-level program design, coding, and unit testing. import holding area =================== A disk storage area where data files (BT North America software releases) are temporarily stored when first entered into the CMF system. IMS === - Information Management System. An IBM database management system capable of managing complex databases and networks. - Internal Maintenance Specification. An internal NTD document that describes a product. It includes data structures, message formats, decision tables, and module logic, which is later refined during implementation and testing. Once the IMS is completed, the GID becomes obsolete. It is the last development document to be written. In List ======= A list containing information regarding the status of incoming OnTyme messages, read or unread. Contrast with Out List. in place ======== Specific hosts or nodes that appear in the origination or destination lists of an Access Profile Entry that are not part of a class or group. index ===== The identification of an element in an array; the identifi- cation is independent of the size of the element. information bits ================ Line control information consisting of bits that have no relation to alphabet sets. Each packet contains these bits which are specifically added to the header in distinctive places. See header. Information Management System (IMS) An IBM data base management system capable of managing complex databases and networks. information processing ====================== One or more operations performed on data to achieve a desired objective. Also called data processing. Information Service =================== TYMNET Information Service. A BT North America on-line service that provides instant access to current information about the TYMNET network and its services. For example, this service provides information about finding most database, applications, and computer services. initialize ========== To originate or establish the basic conditions or startup state of a computer device. Input Ring (IRING) ================== A circular buffer in the slot containing incoming Dispatcher messages. Used for communications between the Dispatcher and slots. Contrast with Output Ring (ORING). input sector ============ Window. An area of memory in Node Code where packets are temporarily stored as they are received from a link. Input/Output table ================== Permuter table. A table listing each channel, by line, in Node Code. Used in mapping the path of each virtual circuit within the node. Institute of Electrical and Electronic Engineers (IEEE) ======================================================= An organization of scientists and engineers whose purpose is the advancement of electrical engineering, electronics, and allied branches of engineering and science. Integrated Services Digital Network (ISDN) ========================================== A new set of digital communications services intended to integrate voice and data communications. ISDN provides the means to transmit analog signals (voice, modem tones) digitally. ISDN provides a wideband digital pipe, which can reduce the number of individual networks that an organization needs. There are two types of ISDN access interfaces: Basic Rate Interface (BRI) and Primary Rate Interface (PRI). intelligent terminal ==================== A data terminal that has its own software control with the ability to store and process data. Examples are computers and word processors. Contrast with dumb terminals. Inter-Process and Input/Output Controller (IPCF) ================================================ Firmware located on the File Server (FS) board and each Communication Facility of the General Processor (GP) (IOC-II x) boards allowing communication between the functional units in the Turbo Engine system. interactive processing ====================== A computer operation in which each item is processed as it is entered (on a time scale of seconds). An example is automatic teller machines (ATMs). interactive working =================== A session between a terminal and a host computer involving keyboard input from the terminal and a response or data transfer from the host. Interexchange Channel (IXC) =========================== A channel between exchanges (central offices). interface (IF) ============== A shared boundary between two subsystems or two devices, systems, or programs. Also, the interaction between two devices or systems that handle data in different ways: different codes or formats. Interface Information Exchange (IIX) ==================================== A BT North America internal protocol that allows interfaces within the TYMNET network to communicate information, such as choice of dialects at a level below that of the end user. Each end of the circuit must verify that the other end is IIX-capable before communication begins. intermediate release ==================== An unscheduled BT North America software release between baseline announcements. Released when an existing baseline release is found to be outdated or lacking information, and a general distribution of another release of the product is warranted. Intermediate Text Block (ITB) ============================= In Binary Synchronous Communications (BSC), a control character used to terminate an intermediate block of characters. The block-check character is sent immediately following ITB, and line-turnaround does not occur. The response following End of Transmission Block (ETB) or End of Text (ETX) also applies to all of the ITB checks immediately preceding the clock terminated by ETB or ETX. internal host ============= One of several Node Code processes that handles circuit termination for internal functions (down-line loading, XRAY, and delay measurement) Internal Maintenance Specification (IMS) ======================================== An internal NTD document that describes a product. It includes data structures, message formats, decision tables, and module logic, which is later refined during implemen- tation and testing. Once the IMS is completed, the GID becomes obsolete. The IMS is the last development document to be written. Internally Switched Interface System (ISIS) =========================================== The operating system for a TYMNET node; provides functions that control the overall operation of an Engine. These functions include, but are not limited to, memory allocation, message switching, job scheduling, interrupt processing, and I/O distribution. ISIS allows multiple data communications functions to run on a single processor. Two of its many services are debugging and I/O port management. Formerly known as ISIS-II or ISIS2. Internally Switched Interface System Recovery Module (ISRM) =========================================================== The software component of the Automatic Port Switching System (APSS), residing in an ISIS slot, that automatically switches user access to the backup Engine when a fault is detected in the Engine. Provides the user interface and control of the Port Switch Module (PSM). See heartbeat. Internally Switched Interface System-68K (ISIS-68K) =================================================== ISIS for the Turbo environment. Functions similarly to ISIS but has added functions for the Turbo Engine GP boards. International Alphabet #5 (IA5) =============================== One of several telegraph and data communications codes developed as an international standard. IA5 is derived from the United States ASCII standard and is sanctioned by the International Standards Organization (ISO) and the CCITT. International Record Carrier (IRC) ================================== Companies authorized by the United States government to carry data traffic and offer leased circuits between the United States and other countries. Examples are MCI and TRT Communications. This type of permission from the United States government is no longer required for data traffic. International Record Carrier (IRC) code ======================================= An internal code used by the Supervisor to designate which TYM2 protocol line is used by a node, from an international location to another location, to set up a specific call. This code tracks calls for accounting purposes. International Standards Organization (ISO) ========================================== An organization that aids in the development of industry standards for communications throughout the world. International Telecommunications Union (ITU) ============================================ An organization that promotes the standardization of telecommunications worldwide. The CCITT is one of two committees under the ITU. The ITU is headquartered in Geneva, Switzerland. International Telegraph and Telephone Consultative Committee (CCITT) ==================================================================== An organization of the United Nations, whose task it is to make technical recommendations about telephone, telegraph, and data communications interfaces. Internet Packet Exchange (IPX) ============================== An internetworking protocol developed by Novell to run all NetWare services. IPX allows users at workstations to communicate with other user-devices on the network. Also used by local and remote bridges to perform internetwork routing services. IPX is implemented by Xerox Network Systems protocols. See Local Area Network. internode control circuit ========================= A special circuit on each link, using channel 0, that connects each Node Code to that of each of its neighbor nodes. interpreted code ================ Engine machine language instructions that must be translated by an interpreter to run in the Turbo Engine. interpreter =========== A program that executes another program by performing the source code instructions without first translating them into object code. interrupts ========== Signal messages that cause the current instruction stream to be interrupted and start the execution of an alternate instruction stream. The original instruction stream will eventually be resumed at the point of interruption. Interrupts are generated at a regular (and high) rate by the Engine hardware clock and are processed by the code to update the software clocks. See clock. intranodal circuit ================== A circuit originating and terminating within a single node. IPCF ==== Inter-Processor Communication Facility. Firmware located on the File Server (FS) board and each of the General Processor (GP) and Input/Output Controller (IOC-II x) boards allowing communication between the functional units in the Turbo Engine system. IPO === Input Process Output. IPSS ==== International Packet Switching Service. IPX === Internet Packet Exchange. An internetworking protocol developed by Novell to run all Netware services. IPX allows users at workstations to communicate with other user-devices on the network. Also used by local and remote bridges to perform internetwork routing services. IPX is implemented by Xerox Network Systems. See Local Area Network. IRC === International Record Carrier. Companies authorized by the United States government to carry data traffic and offer leased circuits between the United States and other countries. Examples are MCI and TRT Communications. This type of permission from the United States government is no longer required for data traffic. IRING ===== Input Ring. A circular buffer in the slot containing incoming Dispatcher messages. Used for communications between the Dispatcher and slots. Contrast with Output Ring (ORING). ISDN ==== Integrated Services Digital Network. A new set of digital communications services intended to integrate voice and data communications. ISDN provides the means to transmit analog signals (voice, modem tones) digitally. ISDN provides a wideband digital pipe, which can reduce the number of individual networks that an organization needs. There are two types of ISDN access interfaces: Basic Rate Interface (BRI) and Primary Rate Interface (PRI). ISIS ==== Internally Switched Interface System. The operating system for a TYMNET node; provides functions that control the overall operation of an Engine. These functions include, but are not limited to, memory allocation, message switching, job scheduling, interrupt processing, and I/O distribution. ISIS allows multiple data communications functions to run on a single processor. Two of its many services are debugging and I/O port management. Formerly known as ISIS-II or ISIS2. ISIS2, ISIS-II Obsolete terms. See Internally Switched Interface System (ISIS). ISIS Data Area (IDA) ==================== A section of memory (segment F) that contains global, read-only information, such as the system clock and Dispatcher message lengths. ISIS High-Speed Access (IHSA) ============================= An ISIS product that works in conjunction with the RJE interface to service bisynchronous customers. It offers bisync-to-async (EBCDIC-to-ASCII) conversion and virtual circuit mode. This is a customized service for running specialized applications. ISIS node ========= A processor that contains ISIS and Node Code along with one or more slot codes such as X.25, 3270, and/or asynchronous interfaces. ISIS Operations Manager-68K (ISOM-68K) ====================================== A slot debugger and operations manager for ISIS-68K. ISIS switcher ============= A processor that contains ISIS and Node Code. ISIS-68K ======== Internally Switched Interface System-68K. ISIS for the Turbo environment. Functions similarly to ISIS but has added functions for the Turbo Engine GP boards. ISO === International Standards Organization. An organization that aids in the development of industry standards for commun- ications throughout the world. ISOM-68K ======== ISIS Operations Manager-68K. A slot debugger and operations manager for ISIS-68K. ISRM ==== Internally Switched Interface System (ISIS) Recovery Module. The software component of the Automatic Port Switching System (APSS) residing in an ISIS slot, that automatically switches user access to the backup Engine when a fault is detected in the Engine. Provides the user interface and control of the Port Switch Module (PSM). See heartbeat. isynchronous ============ Transmission that combines certain characteristics of synchronous and asynchronous transmission. It uses start and stop bits as does asynchronous communication, but it also uses a common time base or clock, as does synchronous communication. ITB === Intermediate Text Block. In Binary Synchronous Communications (BSC), a control character used to terminate an intermediate block of characters. The block-check character is sent immediately following ITB, and line-turnaround does not occur. The response following End of Transmission Block (ETB) or End of Text (ETX) also applies to all of the ITB checks immediately preceding the clock terminated by ETB or ETX. ITI === Interactive Terminal Interface. ITU === International Telecommunications Union. An organization that promotes the standardization of telecommunications world- wide. The CCITT is one of two committees under the ITU. The ITU is headquartered in Geneva, Switzerland. IXC === Interexchange Channel. A channel between exchanges (central offices). |-|-|-|-|-|-|=|=|=|=|=|=|=|=|=|=|=|-|-|-|-|-|-|-|-|-|-|-|=|=|=|=|=|=| Disclaimer ~~~~~~~~~~ This publication is for informational purposes ONLY. In no way are the above authors, or organizations, liable for the use or misuse of the information contained herein. The Underground Agent Society Inc., The Agents Underground Notebooks, UASI, UASI Magazine, The Global Intelligence Center, and The Global Intelligence Underground are all unregistered trademarks of UASI. Distribution to EVERYWHERE is ENCOURAGED! Hellfire BBS, SANctuary Magazine, SANphilez, and SANsites are all unregistered trademarks of SANctuary. 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