205 P&L Profit and Loss P/AR Peak-to-Average Radio P/H/A Phreaker's/Hacker's/Anarchist's PA Power Alarm PA Program Address PABX Private Automatic Branch Exchange PAC Pricing and Announcement Committee PACE Program for Arrangement of Cables and Equipment PACT Prefix Access Code Translator PAD Packet Assembly/Disassembly PADSX Partially Automated Digital Signal Cross-Connect PAG Phreak's Against Geeks PAIN Pirating Artistically Intrepid Newsmongers PAL Pirates At Large PAL Programmable Array Logic PAM Pathetic Ansi Makers PAM Pulse Amplitude Modulation PAN Personal Account Number PANS Pretty Advanced New Stuff PAPAG Phreak's Against Phreak's Against Geeks PAS Public Announcement System PASI Production, Availability, Shipments, Inventory PAT Power Alarm Test PAW Pirates Analyze Warez PAX Private Automatic Exchange PB Pacific Brigade PBC Peripheral Bus Computer PBC Processor Bus Controller PBD Pacific Bell Directory PBM Product Business Manager PBT Profit Before Tax PBU Product Business Unit PBX Personal Branch Exchange PBX Private Branch Exchange PBX Product Branch Exchange PC Personal Computer PC Primary Center PC Production Control PCB Printed Circuit Board PCDA Program Controlled Data Acquisition PCH Parallel Channel PCI Power Crisis International PCI Peripheral Component Interconnect PCM Plug Compatible Manufacturer PCM Product Capacity Manager PCM Profit Contribution Margin PCM Pulse Code Modulation PCO Peg Count and Overflow PCP PC Pursuit PCP Pyscho Corporate Productions PCR Personal Computer Rats PCR Post Call Ratio PCSA Personal Computing System Architecture PCSG Personal Computing Systems Group PCTV Program Controlled Transverters PD Peripheral Decoder PD Public Domain PDF Power Distribution Frame PDI Power and Data interface PDN Public Data Network PDP Peripheral Data Processing PDRC Primal Demented Review Crue PDSP Peripheral Data Storage Processor PDX Paradox PE Peripheral Equipment PE Public Enemy PECC Product Engineering Control Center PEP Performance Enhancement Package PEP Personal Enrichment Program PFM Pulse Frequency Modulation PFPU Processor Frame Power Unit PGA Pin Grid Array PH Parity High PHA Phreakers/Hackers/Anarchists PHACT Phreakers/Hackers/Anarchists/Cyberpunks/Technologists PHANTSY Phantasy Magazine PHAT Phunky Hardcore Ansi Team PHELA Phreakers Elite Association PHT Phantasm PHUCK Phone Hackers United Crash Kill PHUN Phreaker Hackers Underground Network PHX Phoenix PI Physical Inventory PI Pirate Incorporated PIA Plug-In Administrator PIC Partners In Crime PIC Plastic Insulated cable PIC Polyolefin Insulated Cables PIC Primary Independent Carrier PICS Plug-In Inventory Control System PID Proprietary Information Disclosure PIL Pirates In Legion PIMP Phuckin' Insane Music Programs PIN Personal Identification Number PIP Packet Interface Port PITS Pie In The Sky PL Parity Low PLA Programmed Logic Array PLC Police PLCC Plastic Leadless Chip Carrier PLD Programmable Logic Device PLS Programmable Logic Sequencer PM Peripheral Module PM Plant Management PMAC Peripheral Module Access Controller PMG Product Marketing Group PMI Private Memory Interconnect PMR Poor Mans Routing PMS Paranoid Media Scrutinization PMS Peoples Message Service PMT Planning Methodology Team PMU Precision Measurement Unit PNB Pacific Northwest Bell PNPN Positive-Negative-Positive-Negative PO Purchase Order POB Peripheral Order Buffer POC Point of Contact POD Piece of Data POF Programmable Operator Facility POM Point of Manufacturing POOR Protector's Of Our Rights POP Point of Presence POT Point of Termination POTMAN Pirates Of The Mid-Atlantic POTS Plain Old Telephone Service POW Programmers Of War PP Post Pay PP Post-Pay PP&E Production, Planning, and Execution PPD Peripheral Pulse Distributor PPD Product Phase Down PPL Periodic Payment License PPM Pages Per Minute PPM Parts Per Million PPN Project Program Number PPN Public Packet Switching PPP Point to Point Protocol PPS Product Performance Surveys PPS Public Packet Switching PPS Public Packet Switching Network PPS Pulses Per Second PPSN Public Packet Switched Network PPSU Personal Printer Spooling Utility PRCA Puerto Rico Communication Authority PRE Prefix PREMIS Premises Information System PRI Primal PRI Primary Rate Interface PROFS Professional Office Systems PROM Programmable Read-Only Memory PROMATS Programmable Magnetic Tape System PROMIS Prosecutors Management Information Systems PROTEL Procedure Oriented Type Enforcing Language PRS Personal Response System PRTC Puerto Rico Telephone Company PS Personal System PS Preferred Service PS Program Store PSAP Public Safety Answering Point PSAP Public Safety Answering Point (911) PSC Prime Service Contractor PSC Public Safety Calling System PSC Public Service Commission PSD Psychosquad PSDC Public Switched Digital Capability PSDS Public Switched Digital Service PSE Packet Switch Exchange PSG Peripheral and Supplies Group PSG Product Shipping Guide PSI Pirates Sick of Initials PSIU Packet Switch Interface Unit PSK Phase-Shift Keying PSM Packet Service Module PSM Position Switching Module PSN Packet Switched Network PSN Public Switched Network PSO Pending Service Order PSS Packet Switch Stream PSS Packet Switched Services PSS Professional Software Services PSTN Public Switched Telephone Network PSU Portable Storage Unit PSU Program Storage Unit PSW Program Status Word PSY Psychosis PT Program Timer PTAT Private Trans Atlantic Telecommunications PTC Part Time Crackers PTE Packet Transport Equipment PTG Physical Technology Group PTG Pentagram PTL Pirates That Live PTL Praise The Lord PTS Position and Trunk Scanner PTT Postal Telephone Telegraph PTT Postal Telephone and Telegraph PTW Primary Translation Word PUC Peripheral Unit Controller PUC Public Utilities Commission PUR Pursuit PVC Permanent Virtual Circuits PVN Private Virtual Network PW Physical Wish PHD Phreak/Hacker Destroyers PWA Pirates With Attitude