Dascom TallyCom III Installation & Operators Guide - Manual (Page 59)

Abbreviation Full name Explanation
PPD Page Printer Demon Enhanced version of
LPR/LPD that supports IPDS
protocol. The enhancement
enables bi-directional
communication when
printing. Not part of the
standard TCP/IP stack
(programs). Used by IBM
Network printers, PSF/AIX
and others. Works only in
conjunction with PPR. The
sender of a print job via
TCP/IP will be PPR and the
receiver will be PPD.
PPR Page Printer Requester Enhanced version of
LPR/LPD that supports IPDS
protocol. The enhancement
enables bi-directional
communication when
printing. Not part of the
standard TCP/IP stack
(programs). Used by IBM
PSF. Works only in
conjunction with PPR. The
sender of a print job via
TCP/IP will be PPR and the
receiver will be PPD.
PSF Print Service Facility IBM printer driver for AFP
printing. Converts line data
and AFP data to IPDS only.
PSF/AIX and PSF/2 are
capable of converting the
data to PCL as well.
PSS (ida PSS) Print SubSystem 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
program that implements
SNA is called VTAM.
59