1005 lines
45 KiB
Plaintext
1005 lines
45 KiB
Plaintext
|
|
||
|
|
|
||
|
|
><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
|
||
|
|
*********************************************************
|
||
|
|
* *
|
||
|
|
* Modern Database of Network Terminolgy *
|
||
|
|
* *
|
||
|
|
* Alphabetically Listed *
|
||
|
|
* *
|
||
|
|
* Part 3 *
|
||
|
|
* *
|
||
|
|
* Another Modernz Presentation *
|
||
|
|
* *
|
||
|
|
* by *
|
||
|
|
* Digital-demon *
|
||
|
|
* *
|
||
|
|
* (C)opyright January 12, 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
|
||
|
|
Home of Modernz Text Philez
|
||
|
|
<*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*>
|
||
|
|
|
||
|
|
TANSTAAFL
|
||
|
|
The Church of Rodney - Sysop: Tal Meta
|
||
|
|
(908) 830-7960
|
||
|
|
Home of TANJ Text Philez
|
||
|
|
<*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*>
|
||
|
|
*********************************************************
|
||
|
|
Also can be reached at :
|
||
|
|
|
||
|
|
Hellfire BBS - SANctuary World HQ
|
||
|
|
Sysop: Red
|
||
|
|
(908)495-3926
|
||
|
|
|
||
|
|
*********************************************************
|
||
|
|
<*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
C
|
||
|
|
=
|
||
|
|
|
||
|
|
A high-level programming language for writing systems software. The
|
||
|
|
UNIX operating system was written using the C language. C language
|
||
|
|
reduces source code length, which could possibly reduce object code
|
||
|
|
size.
|
||
|
|
|
||
|
|
|
||
|
|
C-48
|
||
|
|
====
|
||
|
|
|
||
|
|
The contiguous 48 states of the United States; excludes Alaska and
|
||
|
|
Hawaii. Also called CONUS.
|
||
|
|
|
||
|
|
|
||
|
|
cable
|
||
|
|
=====
|
||
|
|
|
||
|
|
A number of electrical or optical conductors assembled and covered
|
||
|
|
with a sheath.
|
||
|
|
|
||
|
|
|
||
|
|
Call Request (CRQ)
|
||
|
|
==================
|
||
|
|
|
||
|
|
An X.25 packet requesting to set up a call and containing the calling
|
||
|
|
and called DTE addresses (in addition to other various X.25 fields).
|
||
|
|
|
||
|
|
|
||
|
|
called address
|
||
|
|
==============
|
||
|
|
|
||
|
|
An address (usually X.121) in packed binary-coded decimal digits
|
||
|
|
(maximum 15) specifying the requested destination of a call.
|
||
|
|
|
||
|
|
|
||
|
|
calling address
|
||
|
|
===============
|
||
|
|
|
||
|
|
An address (usually X.121) in packed binary-coded decimal digits
|
||
|
|
(maximum 15) specifying the original requestor of a call.
|
||
|
|
|
||
|
|
|
||
|
|
carrier
|
||
|
|
=======
|
||
|
|
|
||
|
|
An analog signal (at a fixed amplitude and frequency) combined with
|
||
|
|
an information signal in a modulation process producing a signal for
|
||
|
|
transmission. A carrier provides sufficient power so that a signal
|
||
|
|
can be reliably detected at some other point or points. Modulation
|
||
|
|
makes a more powerful signal. The term carrier may refer to this
|
||
|
|
powerful signal either before or (more commonly) after modulation.
|
||
|
|
Also called carrier wave or carrier frequency.
|
||
|
|
|
||
|
|
|
||
|
|
Carrier Detect (CD)
|
||
|
|
===================
|
||
|
|
|
||
|
|
The state of an EIA signal in a modem that is true when the modem
|
||
|
|
has detected a carrier signal on its receive channel.
|
||
|
|
|
||
|
|
|
||
|
|
Carrier Present (CP)
|
||
|
|
====================
|
||
|
|
|
||
|
|
An RS-232-C interface signal.
|
||
|
|
|
||
|
|
|
||
|
|
Carrier Sense Multiple Access/Collection Detection (CSMA/CD)
|
||
|
|
============================================================
|
||
|
|
|
||
|
|
A method for handling network access of several stations on a Local
|
||
|
|
Area Network (LAN). Collision Detection (CD) is a refinement of this
|
||
|
|
method whereby a station on a LAN detects and compensates for the
|
||
|
|
undesirable collisions that could mix data when several stations try
|
||
|
|
to transmit simultaneously.
|
||
|
|
|
||
|
|
|
||
|
|
CBEMA
|
||
|
|
=====
|
||
|
|
|
||
|
|
Computer and Business Manufacturers Association.
|
||
|
|
|
||
|
|
|
||
|
|
CBX
|
||
|
|
===
|
||
|
|
|
||
|
|
Computerized Branch and Exchange.
|
||
|
|
|
||
|
|
|
||
|
|
CCIR
|
||
|
|
====
|
||
|
|
|
||
|
|
International Radio Consultive Committee.
|
||
|
|
|
||
|
|
|
||
|
|
CCITT
|
||
|
|
=====
|
||
|
|
|
||
|
|
Comite Consultatif International de Telephonie et de Telegraphie or
|
||
|
|
International Telegraph and Telephone Consultative Committee. An
|
||
|
|
organization of the United Nations, whose task it is to make technical
|
||
|
|
recommendations about telephone, telegraph, and data communications
|
||
|
|
interfaces.
|
||
|
|
|
||
|
|
|
||
|
|
CCSA
|
||
|
|
====
|
||
|
|
|
||
|
|
Common Control Switching Arrangement. A dedicated, switched network
|
||
|
|
leased by a user to handle communication requirements among various
|
||
|
|
locations.
|
||
|
|
|
||
|
|
|
||
|
|
CCT
|
||
|
|
===
|
||
|
|
|
||
|
|
Circuit Characteristic Type. A number that indicates a circuit's
|
||
|
|
throughput class, batch or interactive circuit type, and protocol.
|
||
|
|
For example, CCT 0 identifies the circuit as an auxiliary circuit.
|
||
|
|
|
||
|
|
|
||
|
|
CCU
|
||
|
|
===
|
||
|
|
|
||
|
|
Cluster Control Unit. A device that can control all communications
|
||
|
|
between a number of terminals or other devices and a host computer.
|
||
|
|
In a TYMNET network, the Cluster Controller is connected to terminal
|
||
|
|
interface (TIF) software that communicates across the network to a
|
||
|
|
host interface (HIF).
|
||
|
|
|
||
|
|
|
||
|
|
CD
|
||
|
|
==
|
||
|
|
|
||
|
|
Carrier Detect. The state of an EIA signal in a modem that is true
|
||
|
|
when the modem has detected a carrier signal on its receive channel.
|
||
|
|
|
||
|
|
|
||
|
|
CEI
|
||
|
|
===
|
||
|
|
|
||
|
|
Current Empty Index.
|
||
|
|
|
||
|
|
|
||
|
|
CEN
|
||
|
|
===
|
||
|
|
|
||
|
|
Comite Europeen de Normalisation.
|
||
|
|
|
||
|
|
|
||
|
|
CENELEC
|
||
|
|
=======
|
||
|
|
|
||
|
|
Comite Europeen de Normalisation Electrotechnique.
|
||
|
|
|
||
|
|
|
||
|
|
centralized network
|
||
|
|
===================
|
||
|
|
|
||
|
|
A time-sharing system in which channels radiate from a central
|
||
|
|
computer system.
|
||
|
|
|
||
|
|
|
||
|
|
CEPT
|
||
|
|
====
|
||
|
|
|
||
|
|
European Conference of Postal and Telecommunication Administration.
|
||
|
|
|
||
|
|
|
||
|
|
channel
|
||
|
|
=======
|
||
|
|
|
||
|
|
A means of transmittin' information from one point to another point.
|
||
|
|
A space allocated to a user on a link; a means of oneway transmission.
|
||
|
|
Usually implies a specific set of physical resources, especially a
|
||
|
|
range of frequencies on some transmission medium. The transmission
|
||
|
|
medium can be open (radio), or closed (pairs of telephone company
|
||
|
|
wire, coaxial cable, or other types of wiring and cabling).
|
||
|
|
|
||
|
|
|
||
|
|
character
|
||
|
|
=========
|
||
|
|
|
||
|
|
A basic unit of information defined by a standard alphabet: upper and
|
||
|
|
lowercase symbols, numerals, punctuation marks, special symbols, and
|
||
|
|
nonprinted characters such as spaces and carriage returns, which are
|
||
|
|
used for control purposes.
|
||
|
|
|
||
|
|
|
||
|
|
Character Mode Translator (CMT)
|
||
|
|
===============================
|
||
|
|
|
||
|
|
A BT North America network-resident protocol conversion software
|
||
|
|
program that allows ASCII character mode terminals to access non-ASCII
|
||
|
|
character mode hosts. Program examples are as follows:
|
||
|
|
CMTI (I refers to IBM) translates ASCII data stream to
|
||
|
|
EBCDIC 3270 data stream.
|
||
|
|
CMTK (K refers to Katakana or Kanji) translates ASCII to
|
||
|
|
Katakana or Kanji.
|
||
|
|
CMTU (U refers to Universal Terminal Systems [UTS])
|
||
|
|
translates ASCII to UTS applications.
|
||
|
|
|
||
|
|
|
||
|
|
Character Mode Translator Operations Manager (COM)
|
||
|
|
==================================================
|
||
|
|
|
||
|
|
A subprocess of the CMT slot. COM allows the user to monitor and
|
||
|
|
control certain aspects of the CMT slot. It can be accessed with a
|
||
|
|
standard login.
|
||
|
|
|
||
|
|
|
||
|
|
character pair
|
||
|
|
==============
|
||
|
|
|
||
|
|
Two continuous bytes of memory.
|
||
|
|
|
||
|
|
|
||
|
|
chassis
|
||
|
|
=======
|
||
|
|
|
||
|
|
The mechanical structure in the Engine and Turbo Engine cabinets, which
|
||
|
|
house the logic and protocol interface boards.
|
||
|
|
|
||
|
|
|
||
|
|
checking
|
||
|
|
========
|
||
|
|
|
||
|
|
A method of verifying the accuracy of data transmitted by using
|
||
|
|
polynomial functions of the data transmitted against the data
|
||
|
|
received. Also called Cyclic Redundancy Check (CRC).
|
||
|
|
|
||
|
|
|
||
|
|
checking-echo
|
||
|
|
=============
|
||
|
|
|
||
|
|
A method of checking the accuracy of data transmission. The receiver
|
||
|
|
returns the data to the sender for comparison with the original data.
|
||
|
|
Also called loop checking.
|
||
|
|
|
||
|
|
|
||
|
|
checkpoint
|
||
|
|
==========
|
||
|
|
|
||
|
|
An address in a program that is recorded in the event log.
|
||
|
|
|
||
|
|
|
||
|
|
checksum
|
||
|
|
========
|
||
|
|
|
||
|
|
The last 4 bytes of a packet, which are used to check the validity of
|
||
|
|
data. Also used to refer to numbers or strings that confirm the
|
||
|
|
validity of a file.
|
||
|
|
|
||
|
|
|
||
|
|
checksum error
|
||
|
|
==============
|
||
|
|
|
||
|
|
An error condition on a line, which is detected when a node receives a
|
||
|
|
packet whose checksum fields do not match the checksums calculated for
|
||
|
|
the received packet. When this condition is detected, the packet is
|
||
|
|
discarded or the message BAD ACK or BAD RECN is sent.
|
||
|
|
|
||
|
|
|
||
|
|
circuit
|
||
|
|
=======
|
||
|
|
|
||
|
|
A complete electrical path. A data path from host-to-host or
|
||
|
|
host-to-terminal. A collection of buffer pairs and channels connecting
|
||
|
|
two ports.
|
||
|
|
|
||
|
|
|
||
|
|
circuit board
|
||
|
|
=============
|
||
|
|
|
||
|
|
A board to which electronic components such as transistors, resistors,
|
||
|
|
and microprocessors are affixed. Also called printed circuit board or
|
||
|
|
card.
|
||
|
|
|
||
|
|
|
||
|
|
Circuit Characteristic Type (CCT)
|
||
|
|
=================================
|
||
|
|
|
||
|
|
A number that indicates a circuit's throughput class, batch or
|
||
|
|
interactive circuit type, and protocol. For example, CCT 0 identifies
|
||
|
|
the circuit as an auxiliary circuit.
|
||
|
|
|
||
|
|
|
||
|
|
circuit label
|
||
|
|
=============
|
||
|
|
|
||
|
|
The ISIS relative port number assigned by the MUX, or the
|
||
|
|
alphanumeric designation of a circuit assigned by the user.
|
||
|
|
|
||
|
|
|
||
|
|
Circuit Multiplexer (MUX)
|
||
|
|
=========================
|
||
|
|
|
||
|
|
An ISIS slot program that allows users to build and maintain
|
||
|
|
multiple circuits to other tools and applications on their hosts.
|
||
|
|
A MUX also allows its users to communicate with other users with a
|
||
|
|
Talk mode facility. A MUX is accessed over a Boss circuit as a host
|
||
|
|
in an ISIS slot.
|
||
|
|
|
||
|
|
|
||
|
|
circuit segment
|
||
|
|
===============
|
||
|
|
|
||
|
|
That portion of a circuit existing in a single node.
|
||
|
|
|
||
|
|
|
||
|
|
circuit switching
|
||
|
|
=================
|
||
|
|
|
||
|
|
A method of communication that establishes an end-to-end connection
|
||
|
|
between two points on a communication network for the life of the
|
||
|
|
session only. The physical route of the circuit can vary from one
|
||
|
|
session to the next or can be different for each session.
|
||
|
|
|
||
|
|
|
||
|
|
CIS
|
||
|
|
===
|
||
|
|
|
||
|
|
Configuration Information System.
|
||
|
|
|
||
|
|
|
||
|
|
class
|
||
|
|
=====
|
||
|
|
|
||
|
|
A set of hosts or nodes that is part of an origination list used to
|
||
|
|
control access to the network. This list can be used as an exclusive
|
||
|
|
list (barring access) or an inclusive list (allowing access) from these
|
||
|
|
nodes or hosts to the network.
|
||
|
|
|
||
|
|
|
||
|
|
Class and Group tables
|
||
|
|
======================
|
||
|
|
|
||
|
|
A database on each Supervisor's disk that contains lists of origination
|
||
|
|
hosts and nodes and destination hosts in a TYMNET network. At login,
|
||
|
|
the Supervisor reads from this database to validate the user's circuit
|
||
|
|
request. The NETVAL program manages this database and forwards this
|
||
|
|
information to each Supervisor.
|
||
|
|
|
||
|
|
|
||
|
|
Clear To Send (CTS)
|
||
|
|
===================
|
||
|
|
|
||
|
|
A signal sent by the DCE to the DTE notifying the DTE that it can begin
|
||
|
|
to transmit data. Contrast with Request To Send (RTS).
|
||
|
|
|
||
|
|
|
||
|
|
client
|
||
|
|
======
|
||
|
|
|
||
|
|
A software program that requests a service. The client is paired with
|
||
|
|
the server; the client is the requestor, the server the provider.
|
||
|
|
See server.
|
||
|
|
|
||
|
|
|
||
|
|
clock
|
||
|
|
=====
|
||
|
|
|
||
|
|
A device that generates periodic signals used for synchronization.
|
||
|
|
|
||
|
|
|
||
|
|
Closed User Group (CUG)
|
||
|
|
=======================
|
||
|
|
|
||
|
|
A group that can only receive data from or transmit data to other
|
||
|
|
users within the same group.
|
||
|
|
|
||
|
|
|
||
|
|
Cluster Controller (CC) or Cluster Control Unit (CCU)
|
||
|
|
=====================================================
|
||
|
|
|
||
|
|
A device that can control all communications between a number of
|
||
|
|
terminals or other devices and a host computer. In a TYMNET network,
|
||
|
|
the Cluster Controller is connected to terminal interface (TIF)
|
||
|
|
software that communicates across the network to a host interface
|
||
|
|
(HIF).
|
||
|
|
|
||
|
|
|
||
|
|
Cluster Remote Display Unit (CRDU)
|
||
|
|
==================================
|
||
|
|
|
||
|
|
A terminal interface (TIF) that replaces a cluster control unit (CCU)
|
||
|
|
and hardware-dominated loop-line network. Customized service for
|
||
|
|
special application configurations.
|
||
|
|
|
||
|
|
|
||
|
|
CMF
|
||
|
|
===
|
||
|
|
|
||
|
|
Code Management Facility. A node configuration and code generation
|
||
|
|
system that runs as an application program under the UNIX operating
|
||
|
|
system.
|
||
|
|
|
||
|
|
|
||
|
|
CMOS
|
||
|
|
====
|
||
|
|
|
||
|
|
Complementary Metal Oxide Semiconductor.
|
||
|
|
|
||
|
|
|
||
|
|
CMT
|
||
|
|
===
|
||
|
|
|
||
|
|
Character Mode Translator. A BT North America network-resident
|
||
|
|
protocol conversion (CMT) software program that allows ASCII character
|
||
|
|
mode terminals to access non-ASCII character mode hosts.
|
||
|
|
Program examples are as follows:
|
||
|
|
CMTI (I refers to IBM) translates ASCII data stream to
|
||
|
|
EBCDIC 3270 data stream.
|
||
|
|
CMTK (K refers to Katakana or Kanji) translates ASCII to
|
||
|
|
Katakana or Kanji.
|
||
|
|
CMTU (U refers to Universal Terminal Systems [UTS])
|
||
|
|
translates ASCII to UTS applications.
|
||
|
|
|
||
|
|
|
||
|
|
coaxial cable
|
||
|
|
=============
|
||
|
|
|
||
|
|
Cable that consists of a central metal conductor surrounded by a
|
||
|
|
dielectric material that is in turn wrapped by a second conductor,
|
||
|
|
all of which is encased in an insulating sheath. Also called coax.
|
||
|
|
|
||
|
|
|
||
|
|
COBOL
|
||
|
|
=====
|
||
|
|
|
||
|
|
Common Business-Oriented Language. A high-level language developed
|
||
|
|
for business data-processing applications.
|
||
|
|
|
||
|
|
|
||
|
|
code
|
||
|
|
====
|
||
|
|
|
||
|
|
A group of characters that has a particular meaning. Also, a general
|
||
|
|
term used to refer to the text of computer programs or portions of
|
||
|
|
programs. A system of symbols representing data or instructions in a
|
||
|
|
computer.
|
||
|
|
BT North America source codes are currently written in the
|
||
|
|
following languages: assembly, C, andCPASCAL.
|
||
|
|
BT North America codes currently written in assembly are
|
||
|
|
CONSAT, Node Code, PROBE, SNA, TYMCOM, and X.25.
|
||
|
|
BT North America codes currently written in C are ISOM-68K
|
||
|
|
and Turbo-SCP.
|
||
|
|
BT North America codes currently written in CPASCAL are
|
||
|
|
OnTyme, NETVAL, RAM, and TMCS.
|
||
|
|
|
||
|
|
|
||
|
|
Code Management Facility (CMF)
|
||
|
|
==============================
|
||
|
|
|
||
|
|
A node configuration and code generation system that runs as an
|
||
|
|
application program under the UNIX operating system.
|
||
|
|
|
||
|
|
|
||
|
|
Coder/Decoder (CODEC)
|
||
|
|
=====================
|
||
|
|
|
||
|
|
An electronic device used in digital telephone systems to convert
|
||
|
|
analog signals to digital signals or vice versa.
|
||
|
|
|
||
|
|
|
||
|
|
COM
|
||
|
|
===
|
||
|
|
|
||
|
|
Character Mode Translator Operations Manager. A subprocess of the CMT
|
||
|
|
slot. COM allows the user to monitor and control certain aspects of
|
||
|
|
the CMT slot. It can be accessed with a standard login.
|
||
|
|
|
||
|
|
|
||
|
|
command
|
||
|
|
=======
|
||
|
|
|
||
|
|
A request for an operation to be performed. Any input to a computer or
|
||
|
|
a program that causes it to take some specified action.
|
||
|
|
|
||
|
|
|
||
|
|
command circuit
|
||
|
|
===============
|
||
|
|
|
||
|
|
A virtual circuit that connects a node to the active Supervisor.
|
||
|
|
Network management messages are transmitted via a command circuit from
|
||
|
|
the Supervisor to the node's Node Code. A command circuit must exist
|
||
|
|
for the node to be in the TYMNET network.
|
||
|
|
|
||
|
|
|
||
|
|
command file
|
||
|
|
============
|
||
|
|
|
||
|
|
A system generation file containing a series of commands used to
|
||
|
|
create a NIB file.
|
||
|
|
|
||
|
|
|
||
|
|
Common Business-Oriented Language (COBOL)
|
||
|
|
=========================================
|
||
|
|
|
||
|
|
A high-level language developed for business data-processing
|
||
|
|
applications.
|
||
|
|
|
||
|
|
|
||
|
|
common carrier
|
||
|
|
==============
|
||
|
|
|
||
|
|
A legal entity required by law to carry goods or information of any
|
||
|
|
qualified customer at publicly established and regulated rates. An
|
||
|
|
example is AT&T. TYMNET is not a common carrier.
|
||
|
|
|
||
|
|
|
||
|
|
Common Control Switching Arrangement (CCSA)
|
||
|
|
===========================================
|
||
|
|
|
||
|
|
A dedicated, switched network leased by a user to handle communication
|
||
|
|
requirements among various locations.
|
||
|
|
|
||
|
|
|
||
|
|
communications controller
|
||
|
|
=========================
|
||
|
|
|
||
|
|
Another term for front-end processor.
|
||
|
|
|
||
|
|
|
||
|
|
Compact XL
|
||
|
|
==========
|
||
|
|
|
||
|
|
An intermediate-sized node in the Engine family of communications
|
||
|
|
processors. Supports applications requiring a moderate number of
|
||
|
|
interconnections. Provides synchronous and asynchronous communications
|
||
|
|
between dissimilar devices and uses CPU III, MAC III and SIO II boards,
|
||
|
|
with up to five optional I/O cards and a 160-MB hard disk.
|
||
|
|
|
||
|
|
|
||
|
|
compatibility
|
||
|
|
=============
|
||
|
|
|
||
|
|
The ability of two types of equipment or software using the same
|
||
|
|
protocols to communicate.
|
||
|
|
|
||
|
|
|
||
|
|
compiler
|
||
|
|
========
|
||
|
|
|
||
|
|
A computer program that converts source code (programming language)
|
||
|
|
into object code (machine-readable language). See also assembler.
|
||
|
|
|
||
|
|
|
||
|
|
complementary buffer
|
||
|
|
====================
|
||
|
|
|
||
|
|
One buffer of a buffer pair, which holds data traveling in the opposite
|
||
|
|
direction on a circuit.
|
||
|
|
|
||
|
|
|
||
|
|
compound passthrough circuit
|
||
|
|
============================
|
||
|
|
|
||
|
|
A circuit passing through a Multi-Node Code (MNC) system that enters a
|
||
|
|
node on one Node Code slot and exits on a different Node Code slot.
|
||
|
|
The Turbo Engine uses MNC. Contrast with simple passthrough circuit.
|
||
|
|
|
||
|
|
|
||
|
|
computer
|
||
|
|
========
|
||
|
|
|
||
|
|
Any machine that can accept data in a certain form, process the data
|
||
|
|
by problem-solving (perform a mathematical or logical operation on the
|
||
|
|
data) and supply the results of the operation. Also, any machine that
|
||
|
|
can control a process.
|
||
|
|
|
||
|
|
|
||
|
|
concentrator
|
||
|
|
============
|
||
|
|
|
||
|
|
A device that multiplexes several low-speed communications lines onto a
|
||
|
|
single high-speed trunk.
|
||
|
|
|
||
|
|
|
||
|
|
Concurrent Pascal
|
||
|
|
=================
|
||
|
|
|
||
|
|
A version of the high-level PASCAL language, which is structured
|
||
|
|
logically for both synchronous and asynchronous multiple process
|
||
|
|
applications.
|
||
|
|
|
||
|
|
|
||
|
|
Concurrent Pascal Compiler (CPASCAL)
|
||
|
|
====================================
|
||
|
|
|
||
|
|
A software program that translates source code written in Concurrent
|
||
|
|
Pascal (CPASCAL) programming language, into object code. This program,
|
||
|
|
which is formatted for Engine loading, produces a code that can run
|
||
|
|
several processes at the same time. See code.
|
||
|
|
|
||
|
|
|
||
|
|
conditioning
|
||
|
|
============
|
||
|
|
|
||
|
|
A type of electrical balancing that provides improved electrical
|
||
|
|
characteristics for high-speed data transmissions over a leased-line
|
||
|
|
circuit. For example, equalizing the attenuation distortion between
|
||
|
|
the higher and lower frequencies adjusts the slightly degraded waveform
|
||
|
|
enough for it to become acceptable.
|
||
|
|
|
||
|
|
|
||
|
|
configuration
|
||
|
|
=============
|
||
|
|
|
||
|
|
A functional arrangement of hardware and software that performs
|
||
|
|
specific node functions.
|
||
|
|
|
||
|
|
|
||
|
|
Configuration file
|
||
|
|
==================
|
||
|
|
|
||
|
|
A system generation parameter file containing statements that
|
||
|
|
customize slot code.
|
||
|
|
|
||
|
|
|
||
|
|
Configurator
|
||
|
|
============
|
||
|
|
|
||
|
|
A planning and analysis tool used to design or reconfigure a TYMNET
|
||
|
|
network. This tool can develop designs based on network performance
|
||
|
|
and point-to-point traffic requirements, designing a network of up to
|
||
|
|
200 nodes and 4,000 links, and can specify node and neighbor node
|
||
|
|
association. See TYMNET On-line Planning System (TOPS).
|
||
|
|
|
||
|
|
|
||
|
|
connect time
|
||
|
|
============
|
||
|
|
|
||
|
|
A measure of system usage by a given user. Also, the length of time it
|
||
|
|
takes a switching system to connect the calling party to the called
|
||
|
|
party.
|
||
|
|
|
||
|
|
|
||
|
|
Consolidated TYMSAT (CONSAT)
|
||
|
|
============================
|
||
|
|
|
||
|
|
An asynchronous terminal interface (TIF) code. TYMNET network-resident
|
||
|
|
software that makes it possible for the network to communicate with
|
||
|
|
terminals or personal computers that use asynchronous protocol.
|
||
|
|
|
||
|
|
|
||
|
|
constant ratio
|
||
|
|
==============
|
||
|
|
|
||
|
|
A code in which the ratio of ones to zeros in each character is
|
||
|
|
constant. See IBM 4 of 8.
|
||
|
|
|
||
|
|
|
||
|
|
context switcher
|
||
|
|
================
|
||
|
|
|
||
|
|
A portion of TYM2 Solo Node Code that regulates the execution of
|
||
|
|
independent processes in a node.
|
||
|
|
|
||
|
|
|
||
|
|
control code
|
||
|
|
============
|
||
|
|
|
||
|
|
A data item that performs signaling functions between software
|
||
|
|
packages. Usually one byte. Common ASCII control codes are
|
||
|
|
NUL ENQ LF SI DC4 EM RS
|
||
|
|
SOH ACK VT DLE NAK SUB US
|
||
|
|
STX BEL FF DC1 SYN ESC
|
||
|
|
ETX BS CR DC2 ETB FS
|
||
|
|
EOT HT SO DC3 CAN GS
|
||
|
|
|
||
|
|
|
||
|
|
Control Table Area (CTA)
|
||
|
|
========================
|
||
|
|
|
||
|
|
A memory segment (segment E) that contains descriptors of a slot's
|
||
|
|
running configuration, such as, which segments are in use, the host
|
||
|
|
numbers assigned to that slot, and the number of ports available to
|
||
|
|
each host in that slot. See slot. See also segment.
|
||
|
|
|
||
|
|
|
||
|
|
controller
|
||
|
|
==========
|
||
|
|
|
||
|
|
A device that automatically regulates a controlled variable or system.
|
||
|
|
|
||
|
|
|
||
|
|
Controlling User Directory (CUD)
|
||
|
|
================================
|
||
|
|
|
||
|
|
A collection of all user validation data (username, password, and
|
||
|
|
network access). Accessed by NETVAL, the CUD is periodically copied
|
||
|
|
to the Master User Directory (MUD) of each Supervisor in the network.
|
||
|
|
|
||
|
|
|
||
|
|
CONUS
|
||
|
|
=====
|
||
|
|
|
||
|
|
Continental United States; excludes Alaska and Hawaii.
|
||
|
|
|
||
|
|
|
||
|
|
conversion boundary
|
||
|
|
===================
|
||
|
|
|
||
|
|
A type of interface program that translates one protocol into another
|
||
|
|
protocol.
|
||
|
|
|
||
|
|
|
||
|
|
Coordinated Universal Time (UTC)
|
||
|
|
================================
|
||
|
|
|
||
|
|
The mean solar time for the meridian at Greenwich, England, used as a
|
||
|
|
basis for calculating time throughout most of the world. Formerly
|
||
|
|
called Greenwich Mean Time (GMT). GMT became Coordinated Universal
|
||
|
|
Time (UTC) when the atomic clock was moved to Paris, France. In some
|
||
|
|
TYMNET programs, UTC is stored as a 64-bit binary number that
|
||
|
|
represents the time elapsed since January 1, 1974.
|
||
|
|
|
||
|
|
|
||
|
|
coprocessor
|
||
|
|
===========
|
||
|
|
|
||
|
|
A secondary processor that performs specialized data-processing tasks.
|
||
|
|
|
||
|
|
|
||
|
|
core memory
|
||
|
|
===========
|
||
|
|
|
||
|
|
An older, slower, and bulkier type of magnetic main memory. The term
|
||
|
|
is often used as a synonym for other types of memory. Its one advantage
|
||
|
|
is that it is nonvolatile when the power is shut off.
|
||
|
|
|
||
|
|
|
||
|
|
COS
|
||
|
|
===
|
||
|
|
|
||
|
|
Corporation for Open Systems.
|
||
|
|
|
||
|
|
|
||
|
|
CP
|
||
|
|
==
|
||
|
|
|
||
|
|
Carrier Present. An RS-232-C interface signal.
|
||
|
|
|
||
|
|
|
||
|
|
CPASCAL
|
||
|
|
=======
|
||
|
|
|
||
|
|
Concurrent Pascal Compiler. A software program that translates source
|
||
|
|
code written in Concurrent Pascal (CPASCAL) programming language into
|
||
|
|
object code. This program, which is formatted for Engine loading,
|
||
|
|
produces a code that can run several processes at the same time.
|
||
|
|
See PASCAL.
|
||
|
|
|
||
|
|
|
||
|
|
CPE
|
||
|
|
===
|
||
|
|
|
||
|
|
Customer Premise Equipment. Equipment located at a customer site;
|
||
|
|
the equipment might not be owned by the customer.
|
||
|
|
|
||
|
|
|
||
|
|
cps
|
||
|
|
===
|
||
|
|
|
||
|
|
Characters per second or cycles per second.
|
||
|
|
|
||
|
|
|
||
|
|
CPU I
|
||
|
|
=====
|
||
|
|
|
||
|
|
Central Processing Unit I. A BT North America controller board in the
|
||
|
|
Engine family of communication processors that performs all arithmetic
|
||
|
|
and logical operations. The CPU I is directly cabled to the ROM and
|
||
|
|
I/O board.
|
||
|
|
|
||
|
|
|
||
|
|
CPU III
|
||
|
|
=======
|
||
|
|
|
||
|
|
Central Processing Unit III. A BT North America controller board in the
|
||
|
|
Engine family of communication processors that performs all arithmetic
|
||
|
|
and logical operations. The CPU III combines the features of the CPU I
|
||
|
|
and the ROM and I/O boards.
|
||
|
|
|
||
|
|
|
||
|
|
crash
|
||
|
|
=====
|
||
|
|
|
||
|
|
The halting of an execution of computer code, a portion of computer
|
||
|
|
code, or the whole machine due to hardware failure, endless loop,
|
||
|
|
or block.
|
||
|
|
|
||
|
|
|
||
|
|
crash options
|
||
|
|
=============
|
||
|
|
|
||
|
|
A set of parameters that determines what actions a slot can take
|
||
|
|
following a crash.
|
||
|
|
|
||
|
|
|
||
|
|
crash register
|
||
|
|
==============
|
||
|
|
|
||
|
|
A description of the contents of registers as they were at the time
|
||
|
|
of a crash.
|
||
|
|
|
||
|
|
|
||
|
|
crash table
|
||
|
|
===========
|
||
|
|
|
||
|
|
An area of memory that records the slot's crash history.
|
||
|
|
|
||
|
|
|
||
|
|
CRC
|
||
|
|
===
|
||
|
|
|
||
|
|
Cyclic Redundancy Check. An error-detection technique used to check the
|
||
|
|
accuracy of frames transmitted over a data link. A mathematical
|
||
|
|
calculation performed by Node Code to ensure data integrity of the
|
||
|
|
packets transmitted between nodes.
|
||
|
|
|
||
|
|
|
||
|
|
CRDU
|
||
|
|
====
|
||
|
|
|
||
|
|
Cluster Remote Display Unit. A terminal interface (TIF) that replaces
|
||
|
|
a cluster control unit (CCU) and hardware-dominated loop-line network.
|
||
|
|
Customized service for special application configurations.
|
||
|
|
|
||
|
|
|
||
|
|
crossover cable
|
||
|
|
===============
|
||
|
|
|
||
|
|
A cable or double connection that can mate similar cables or equipment.
|
||
|
|
For example, the transmit data signal on the originating end becomes
|
||
|
|
the receiving data signal on the terminating end. Also called a
|
||
|
|
null-modem cable.
|
||
|
|
|
||
|
|
|
||
|
|
CRQ
|
||
|
|
===
|
||
|
|
|
||
|
|
Call Request. An X.25 packet requesting to set up a call and containing
|
||
|
|
the calling and called DTE addresses (in addition to other various X.25
|
||
|
|
fields).
|
||
|
|
|
||
|
|
|
||
|
|
CRT
|
||
|
|
===
|
||
|
|
|
||
|
|
Cathode Ray Tube.
|
||
|
|
|
||
|
|
|
||
|
|
crypto messages
|
||
|
|
===============
|
||
|
|
|
||
|
|
Diagnostic messages that are continuously generated by Node Code. The
|
||
|
|
most recent crypto messages are stored in the crypto buffer; a maximum
|
||
|
|
of 256 messages can be stored in the crypto buffer.
|
||
|
|
|
||
|
|
|
||
|
|
CSMA/CD
|
||
|
|
=======
|
||
|
|
|
||
|
|
Carrier Sense Multiple Access/Collision Detection. A method of handling
|
||
|
|
network access of several stations on a Local Area Network (LAN).
|
||
|
|
Collision Detection (CD) is a refine- ment of this method whereby a
|
||
|
|
station on a LAN detects and compensates for the undesirable collisions
|
||
|
|
that could mix data when several stations try to transmit
|
||
|
|
simultaneously.
|
||
|
|
|
||
|
|
|
||
|
|
CSR
|
||
|
|
===
|
||
|
|
|
||
|
|
Control Status Register.
|
||
|
|
|
||
|
|
|
||
|
|
CTA
|
||
|
|
===
|
||
|
|
|
||
|
|
Control Table Area. A memory segment (segment E) that contains
|
||
|
|
descriptors of a slot's running configuration, such as, which segments
|
||
|
|
are in use, the host numbers are assigned to that slot, and the number
|
||
|
|
of ports are available to each host in that slot. See slot.
|
||
|
|
See also segment.
|
||
|
|
|
||
|
|
|
||
|
|
CTS
|
||
|
|
===
|
||
|
|
|
||
|
|
Clear To Send. A signal sent by the DCE to the DTE notifying the DTE
|
||
|
|
that it can begin to transmit data. Contrast with Request To Send (RTS)
|
||
|
|
|
||
|
|
|
||
|
|
CUD
|
||
|
|
===
|
||
|
|
|
||
|
|
Controlling User Directory. A collection of all user validation data
|
||
|
|
(username, password, and network access). Accessed by NETVAL, the CUD
|
||
|
|
is periodically copied to the Master User Directory (MUD) of each
|
||
|
|
Supervisor in the network.
|
||
|
|
|
||
|
|
|
||
|
|
CUG
|
||
|
|
===
|
||
|
|
|
||
|
|
Closed User Group. A group that can only receive data from or transmit
|
||
|
|
data to other users within the same group.
|
||
|
|
|
||
|
|
|
||
|
|
Customer Premise Equipment (CPE)
|
||
|
|
================================
|
||
|
|
|
||
|
|
Equipment located at a customer site; the equipment might not be owned
|
||
|
|
by the customer.
|
||
|
|
|
||
|
|
|
||
|
|
Cyclic Redundancy Check (CRC)
|
||
|
|
=============================
|
||
|
|
|
||
|
|
An error-detection technique used to check the accuracy of frames
|
||
|
|
transmitted over a data link. A mathematical calculation performed by
|
||
|
|
Node Code to ensure data integrity of the packets transmitted between
|
||
|
|
nodes.
|
||
|
|
|
||
|
|
|
||
|
|
Cyclopean Gateway Service (CGS)
|
||
|
|
===============================
|
||
|
|
|
||
|
|
A BT North America online electronic library that offers access to
|
||
|
|
thousands of publications.
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*>
|
||
|
|
<*> <*>
|
||
|
|
<*> <*>
|
||
|
|
<*> THIS HAS BEEN A MODERNZ PRESENTATION <*>
|
||
|
|
<*> <*>
|
||
|
|
<*> SEE YOU ALL AT MATRIX BBS (908)905-6691 <*>
|
||
|
|
<*> <*>
|
||
|
|
<*> NON-PURSUITABLE WIHTOUT A GLOBAL <*>
|
||
|
|
<*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*><*>
|
||
|
|
|
||
|
|
|