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File No. S360-30
Form C30-2003-3 OS
Systems Reference Library
IBM System/360
Operating System
Oueued Telecommunications Access Method
Message Processing Program Services
Program Number 3605-CO-519
This publication provides information on how to use the
Queued Telecommunications Access Method (QTAM) within
Option 2 (Multiprogramming with a Fixed Nurrcer of
Tasks) or Option 4 (Multiprogramming with a Variable
Number of Tasks) of the System/360 Operating System to
support a telecommunications application. Services
provided by QTAM in support of a message processing
program are described in detail, including the facilities
provided to establish the interface to a QTAM message
control program.
For detailed information on the QTAM facilities
provided for the construction of a rressage control
program" refer to the publication.q .!BM system/360
Operating system: QTAM Message Control Program, Form
C30- 2005.
PREFACE
This publication is intended fer the prob- The first four sections of a companion
lem programmer assigned to write a rressage publication, IBM System/360 Operating Sys-
processing program to support a QTAM- tem: QTAM Message Control Program, Forrr
controlled telecorrmunications system C30-2005, contain general information of
operating under the IBM System/360 Cper- interest to the programmer writing a mes-
ating System. Included is a general dis- sage processing program" i.e., telecomITu-
cussion of message Frocessing frograms, nications applications# concepts and ter-
followed by a detailed description of the minology_ and message formats.
services QTAM provides in surpcrt of a rres-
sage processing program. The CTAM services The prerequisite fer a thorough under-
are provided. through standard rracro- standing of this publication is a basic
language statements such as GE~, PU~, OPEN, knowledge of System/360 machine concepts
and CLOSE. and of the systern/360 operating System.
Fourth Edition (November 1968)
This edition, Forrr C30-2003-3, is a major revision of, and renders
obsolete, Form C30-2003-2. New information has been added throughout
the publication; changes and additicns to the text, and small changes to
illustrations, are indicated by a vertical line to the left of the
change; changed or added illustrations are denoted by a bullet (e) to
the left of the caption.
Significant changes or additions to the specifications contained in this
manual are continually being made.. when using this publication in
connection with the operation cf IBM equiprrent, check the latest SRL
Newsletter for revisions or contact the local IBM branch office.
Requests for copies of IBM publications should be made to your IBM
representative or to the IBM branch office serving your locality.
A form is provided at the back cf this publication for reader's
comments. If the form has been removed, corrrrents may be addressed to
IBM Corporation, Programming Documentation, P.O. Box 12275, Research
Triangle Park, North Carolina 27709.
Dcopyright International Business Machines Corporation 1966, 1967,
1968.
CONTENTS
INTRODUCTION ..