| * not in alphabetical order, to
find a term goto "FIND on this page in menu bar" |
| Networking |
| Nos
Network
operating system |
| When
computers are connected together in networks,
special software is required to handle the interaction of the machines
concemed. This software is called the Nos. |
| ODI
Open
datalink interface |
| A set of
rules or protocol, defined by the company
Novell, which allows communication between the different types of
hardware circuits (Lan cards) that connect computers together into
networks and the different versions of Novell's network software,
NetWare |
| MAC
Media
Access Control |
| The
networking layer that deals with the addressing scheme for uniquely
identifying a network device anywhere in the world. No network device
anywhere on the planet has the same MAC address. |
| MAPI
Mail
/ Messaging Applications
Programming Interface. |
Microsoft's
API that provides programmers with a framework to write windows-based
Email and
messaging applications. |
| MIB
Management Information Base |
| A
database of information used to keep track of managed network devices |
| Modems |
| MNP
Microcom
Networking
Protocol |
| is
a special error correction protocol for the transfer of
data.
The protocol is implemented not through software but as an
integral part of the modem, i.e. Hardware. MNP was developed
by
Microcom to serve as an industry standard for high speed,
error-free communications. |
| Modem
Modulator
/ demodulato |
| It is
a device that converts digital data from a computer or
terminal into analogue data that can be transmitted
over
telephone lines. On the receiving end, it then converts the analogue
data back to digital data. A modem handles the dialling and
answering of a telephone call and generates the speed of the data
transmission. Modem speed is measured in bits per second |
| Remote
Configuration |
| A
modem
that
supports remote configuration allows a caller to change the settings
that govern a communications
session |
| Synchronous
operation |
Describes
a
way
of communicating that is governed by a master clock. A
constant
amount of time elapses betWeen each packet of data. This time lapse can
be judged because the computers at each end of the link
synchronise their clocks. This type of communication
is
typically used by mainframe computers.
PCs use asynchronous communications. This technique separates packets
of data using start and stop bits. This removes the need for accurate
timing equipment on the PC but, because it adds an extra tWo bits to
every packet of data sent, is slower than an equivalent synchronous
transfer. |
| UART
Universal Asynchronous Receiver
transmitter |
a
chip that controls a serial port and. optionally. a buffer.V.
ReadV Dot. the set of ITU transmission standards. Some
of these
are Y.21. Y.22. V.23. and Y.42. V.32bis is the standard for 14.4 Kbps
modems. Y.42/V.42 bis are error correction and compression standards
respectively. Y.17 is for 14.4 Kbps fax transmission.
V.34
The ITU modulation standard for 28.8 Kbps modem communication. to be
finally approved in September 1994.
V.FC
An acronym forY.fast class.Y.FC is not a recorganiised
standard.
but refers to a chip set factured by RockwellInternational. thati
rporates many of the early Y.34 specs.
V.terboA proprietary 19.2 Kbps transmission stand
ard developed by AT&T. |
| ISDN
Integrated Services Digital
Network |
| The
CCNT (Comite Consultatif Internationale de Telegraphie et
Telephonie) standard that defines a digital communications
network
geared to replace the world's analog telephone systems |
| BBS
bulletin board system |
| A
term for dial-up on-line systems from which users can
download software, leave messages for other users, and
exchange
information. BBSes proliferated in the 1988 with the advent of
inexpensive Pcs and modems. |
| DCE
and DTE |
| Data Communications Equipment,or
modem; Data Terminal Equipment, or PC. |
| Error
correction |
| A
mathematical method to
ensure that the data received is accurate, especially over
noisy
Iines.The receiver will request retransmission if errors are detected. |
| Group
3 Fax |
| Fax
Transfers at 9,600 bps. |
| Handshaking |
| A
set of
coded signals exchanged betwee the sending and
receiving modems that cc ordinates establishing a connection: sending
data, and exiting a connection. |
| Initialisation
string |
| A
series of
AT commands that set up the ba sic parameters like
speaker volume, error COI rection and compression schemes. If none
specified, the modem uses default settings. |
| ITU |
| InternationalTelecommunications
Union, fol merly the CCITT; a
Geneva based UN bod that sets data communications standards suc as V.34. |
| ABR
Available Bit Rate |
| How
much bandwidth is available for your network connection |
| MBONE
MuIticast Backbone |
A
special highspeed part of the Internet used for carrying
bandwidth-hungry data
[such as video) to multiple stations. |
| MIME
Multipurpose Internet Mail
Extension |
| A
standard for attaching any kind of data to an Email message |
| MTA
Message Transfer Agent |
| The
software agent in X-400 that deals with the exchange and routing of
mail messages. |
|
