Appendix J Abbreviations
Abbreviation Full name Explanation
PSF Print Service Facility IBM printer driver for AFP
printing. Converts line data
and AFP data to IPDS only.
PSF/AIX and PSF/2 is
capable of converting the
data to PCL as well.
PSS (ida PSS) Print Subsystem MPI Tech print system for
OS/390 (MVS) and VM
systems. Prints AFP and line
data files on all remote
printers, NOT channel
attached printers.
RAM Random Access Memory Memory chip that is able to
store information while
powered on. RAM can be
‘written’ an indefinite number
of times.
SCS SNA Character String Control information for
simple print formatting like
e.g. set CPI, LPI and Form
Feed.
SIMM Single Inline Memory Module
SNA Systems Network Architecture IBM networking concept
usually for Mainframe and
AS/400. On mainframes the
actual program that
implements SNA is called
VTAM.
TCP/IP Transmission Control
Program/Internet Protocol
Suite of programs for net-
work communication. TCP/IP
can be installed on almost
every existing operating
system, but the supported
functions vary between
operating systems. TCP/IP
consist of a base TCP
program and various other
programs providing support
for e.g. LPD, Telnet or
BootP.
VTAM Virtual TeleAccess Method IBM network communcation
program. VTAM is used to
connect printers and
terminals to OS/390 (MVS)
and VM systems
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