AAA

Agent Assembly Area

ACS

Airport Check-in System – Sabre’s boarding pass program.

API

Application Programming Interface –A set of calling conventions that define how a service is invoked through a software package.

APPC

Advanced Program-to-Program Communications – IBM’s interface solution for developing applications that communicate with each other across SNA networks.

APPL

Application - A program that performs a function directly for a user.

ATB

Application Transport Block – a message that follows a specific format that is used by applications to pass information to the Sabre Data Source Utility.

ATBIM

Application Transport Block Interface Macro – the Sabre-SDS API used by host applications to manipulate ATBs.

BTS

Sabre Business Travel Solutions – helps control travel and entertainment expenses.

DCSP

Direct Connect Service Provider – is responsible for transmitting application messages from PSS and receiving and routing messages back to PSS applications.  The purpose of DCSP is to isolate applications from the mechanics of distributed transaction processing.

EDI

Electronic Data Interchange – a format in which business data is represented using national or international standards.

EDIFACT

Electronic Data Interchange For Administration, Commerce, and Transport – messages that are approved as standards for EDI.

FDR

Format Definition Record – represents in an encoded form the layout of the data for a specific device type.

GDS –

Generalized Data Stream – Original name of SDS

GUI

Graphical User Interface - a type of user interface where the user controls the operation of a piece of software by interacting with graphical elements on the display.  These graphical elements may include menus and icons.  Other important features of a graphical user interface are window techniques and the use of a mouse or other pointing device.

HCC

Host Communications Complex –

ICOT

The traditional piece of computer hardware for using network services.  Terminals usually have minimal computing function, being completely dependent upon their host, and are often referred to as "dumb terminals."

IWS

Intelligent Work Station - personal computers that emulate terminal functions for the purpose of connecting to mainframe hosts.

LU

Logical Unit - a user port into an SNA network

LU6.2

LU type 6.2

MDR

Message Definition Record – serves as a template that fully describes a given piece of information.

PNR

Passenger Name Record - A record that contains specific information and preferences about a passenger

PSS

Passenger Service System – an analog network that provides access to Sabre.

QLLC

Qualified Logical Link Control (transmission protocol) – QLLC uses qualified DATA packets ('Q-bit') to 1 transfer PU commands.  QLLC is a link protocol used when transmitting SNA data over X.25. QLLC is implemented in special X.25 software or hardware on most IBM platforms.

RDCSP

Reverse DSCP.

RPPC

Remote Program-to-Program Call – a package that provides client/server communications services to TPF applications.

Sabre

Semi-Automatic Business Research Environment – a computer system that processes data and provides responses on a large variety of topics.

SDLC

Synchronous Data Link Control (transmission protocol) – an IBM protocol developed to provide simple, reliable modem communications.

SDS

Saber Data Source a product that enables applications to communicate more effectively by standardizing data across databases and processing systems, employs a common messages structure format, and removes the applications from device and network considerations.

SNA

Systems Network Architecture – a network built out of expensive, dedicated switching minicomputers managed by a central mainframe.

STIN

Sabre Travel Information Network

STS

Sabre Technology Solutions

SUBSET

A Message Definition Record describing additional views of the data.  Subsets may have more or less information than the original (Master) MDR. 

TCP/IP

Transmission Control Protocol/Internet Protocol – a set of protocols developed to allow cooperating computers to share resources across a network.

TJR

Travel Journal Record

TPF

Transaction Processing Facility - the high-end member of IBM's family of Transaction Processing Solutions. It is designed as an operating system powered by the S/390 CMOS technology and optimized for delivering the exacting and extreme requirements of highly scalable, mission-critical computing with very high levels of guaranteed 7 x 24 x 365 availability.

VAX

Virtual Access Extension - a brand of computing mainframe that was popular in the 1980's for power computing.

X.25

a packet switch protocol (ISO packet communications protocol) – a service provided by the phone company to accept and route individual data packets.