Glossary – Samsung ML-2955ND-XAA User Manual
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Glossary
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PPM
Pages Per Minute (PPM) is a method of measurement for 
determining how fast a printer works, meaning the number of pages 
a printer can produce in one minute.
PRN file
An interface for a device driver, this allows software to interact with 
the device driver using standard input/output system calls, which 
simplifies many tasks. 
Protocol
A convention or standard that controls or enables the connection, 
communication, and data transfer between two computing 
endpoints.
PS
See PostScript.
PSTN
The Public-Switched Telephone Network (PSTN) is the network of 
the world's public circuit-switched telephone networks which, on 
industrial premises, is usually routed through the switchboard.
RADIUS
Remote Authentication Dial In User Service (RADIUS) is a protocol for 
remote user authentication and accounting. RADIUS enables 
centralized management of authentication data such as usernames 
and passwords using an AAA (authentication, authorization, and 
accounting) concept to manage network access.
Resolution
The sharpness of an image, measured in Dots Per Inch (DPI). The 
higher the dpi, the greater the resolution.
SMB
Server Message Block (SMB) is a network protocol mainly applied to 
share files, printers, serial ports, and miscellaneous communications 
between nodes on a network. It also provides an authenticated Inter-
process communication mechanism.