| |
|
A |
| AAI |
 |
Access to Access Interface |
| AAL |
|
ATM Adaptation Layer |
| ABM |
|
Asynchronous Balanced Mode, a communication mode used
in HDLC that allows either of two workstations in a peer-oriented
point-to-point configuration to initiate a data transfer. |
| ABR |
|
Available Bit Rate |
| Access method |
|
Generally, the method by which networked stations determines
when they can transmit data on a shared transmission medium.
Also, the software is within an SNA processor that controls
the flow of information through a network. |
| ACS |
|
Access Control System |
| ACSE |
|
Association Control Service Element |
| ACU |
|
Alarm Control Unit |
| Active hub |
|
A multiport device that amplifies LAN transmission signals. |
| AD4 |
|
Advanced D4 pulse code modulation |
| Adapter |
|
A
board installed in a computer system, usually a PC, to
provide network communication capabilities to and
from that computer system. Also called a network interface
card (NIC). |
| ADLT |
|
ADSL
Line Termination card |
| ADPCM |
|
Adaptive
Pulse Code modulation |
| ADSE |
|
ADSL
Extender card |
| ADSL |
|
Asynchronous
Digital Subscriber Line. |
| AE |
|
Application
Entity |
| AFP |
|
AppleTalk
Filing Protocol, protocol that lets workstation accesses
files from remote file servers. The protocol corresponds
to layer 6 of the Open Systems Interconnection (OSI)
reference model. |
| Agent |
|
Software
that receives queries and returns replies on behalf of
an application. In network management systems, agents
reside in all managed devices and report the values of
specified variables to management stations. |
| |
|
|
| AM |
|
Amplitude
Modulation |
| AMP |
|
Adapter
Management Protocol |
| AN |
|
Access
Node |
| ANI |
|
Access
to Network Interface |
| ANI |
|
Automatic
Number Identification |
| ANSI |
|
American
National Standards Institute |
| ANT |
|
ADSL
Network Termination |
| API |
|
Application
Program Interface, means of communication between programs
to give one program transparent access to another. APIs
serve various computing purposes. In networking, for
example, an API offers software applications (such as
a database manager) transparent access to OS/2 files,
devices or interprocess communications. |
| APPC |
|
Advanced
Program-to-Program Communications, implementation of
SNA LU 6.2 sessions that permits personal computers in
an SNA network to communicate in real time with the mainframe
host and other networks. |
| AppleTalk |
|
An
Apple networking system that operates over STP wire at
230 Kbps.
Application layer Layer 7 of the OSI Reference Model; implemented by various
network applications, including electronic mail, file transfer and terminal emulation. |
| APPN |
|
Advanced
Peer-to-Peer Networking, IBM SNA facility that provides
distributed processing based on Type 2.1 network nodes
and LU 6.2. |
| APS |
|
Automatic
Protection Switching |
| ARP |
|
Address Resolution Protocol, Internet protocol for dynamically
mapping Internet addresses to physical hardware addresses
on LANs. Limited to LANs that support hardware broadcast. |
| ARPA |
|
Advanced
Research Project Agency |
| ARQ |
|
Automatic
Repeat reQuest |
| |
|
|
| AS |
|
Access Server |
| AS |
|
Autonomous
System, in Internet (TCP/IP) terminology, a series of
gateways or routers that fall under a single administrative
entity and cooperate using the same Interior Gateway
Protocol (IGP). |
| ASAM |
|
ADSL Subscriber Access Multiplexer |
| ASBR |
|
Autonomous
System Boundary Router |
| ASCII |
|
American
Standard Committee for Information International |
| ASIC |
|
Application-Specific
Integrated Circuit |
| ASN.1 |
|
Abstract Syntan Notation One |
| Async |
|
Asynchronous,
a form of communication in which data is sent using start
and stop bits, without regard for the time needed for
transmission. |
| AT |
|
Asynchronous
Transmission, Data transmission one character at a time,
with intervals of varying lengths between transmittals.
Start and stop bits at the beginning and end of each
character control the transmission. |
| ATC |
|
ATM
Transfer Capability |
| ATM |
|
Asynchronous
Transfer Mode, a packet switching technique which uses
packets, or cells, of fixed length to transmit multiple
types of information (voice,
video, data. Also referred to as BISDN. |
| ATM-F |
|
ATM-Forum |
| ATP |
|
AppleTalk
Transaction Protocol |
| ATRU |
|
ASAM
Top Rack Unit |
| Attenuation |
|
The
decrease in magnitude of the power of a signal transmitted
over a wire, measured in decibels. As attenuation increases,
signal power decreases. |
| AU |
|
Access
Unit |
| AUI |
|
Attachment
Unit Interface Cable, an IEEE 802.3 cable connecting
the MAU (Media Access Unit) to a networked device; AUI
also may refer to the host back panel connector to which
an AUI cable attaches. |
| Autobaud |
|
Automatic
determination and matching of transmission speed. |
| Auto-partitioning |
|
A
function of all repeaters, whereby a faulty segment is
automatically isolated to prevent the fault affecting
the entire network. The segment is automatically reconnected
by the repeater when the fault condition is rectified. |
| AWG |
|
American Wire Guage. A system that specifies wire size.
The guage varies inversely with the wire diameter size. |
| |
|
|
