| PAF |
Postal
Address File (Royal Mail) |
| PAN |
Personal
Account Number |
| PAP |
Password
Authentication Protocol |
| PC |
Personal
Computer |
| PCB |
Process/Protocol(TCP)/Program
Control Block |
| PCS |
Print
Contrast Signal |
| PDF |
Portable
Document Format |
| PDIAL |
Public
Dialup Internet Access List [Internet] |
| PEP |
Packet
Exchange Protocol |
| PHF |
Packet
Handling Function [ISDN data communications] |
| PIF |
Postal
InformationFile (Royal Mail) |
| PILON |
Payment
In Lieu of Notice |
| PING |
Packet
InterNet Grouper |
| PIP |
Pricing in Progress |
| PIR |
Programmed
Ink Reduction |
| PKI |
Public
Key Intrastructure |
| PMAP |
Port
Mapper Protocol |
| PMD |
Packet
Mode Data [ISDN data communications] |
| PMS |
Pantone
Matching System (for printing inks) |
| PNNI |
Private
Network to Network Interface |
| PONA |
Person
Of No Account [person without Internet access] |
| POP |
Post
Office Protocol (common) |
| POP |
Point
of Presence [Internet] |
| POS |
Point
of Sale |
| PPI |
Postage
Paid Impression |
| PPP |
Point-to-Point
Protocol [Internet, used for dial-up access] |
| PPTP |
Point-to-Point
Tunneling Protocol |
| PRA |
Primary
Rate Interface [ISDN] |
| PRES |
Printer
Resource Software |
| PRI |
Primary
Rate Interface (ISDN) [Telephony] |
| PS |
PostScript
[printers] |
| PS |
Print
Server |
| PS |
Power
Supply |
| PSN |
Packet
Switched Network |
| PSPN |
Public
Switched Packet Network |
| PUB |
PUBlic
(directory) [Internet] |
| PVN |
Private
Virtual Network |