| P |
| PDA |
| Personal Digital Assistant. Generic description for any palm-sized or handheld PC or other online device. |
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| POP |
| Post Office Protocol. POP collects email messages addressed to you and downloads them to your computer when you check your email. You cannot store your messages on a POP mail server. Make a note of the name of your POP (incoming mail) server in case of problems with email. |
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| PPP |
| Point-to-Point protocol. PPP is used to connect to the Internet via a narrowband modem and dial-up line. PPP requires a user ID and password to start any session; always-on broadband connections do not. |
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| PPPoE |
| PPP over Ethernet. Combines the password security of PPP with always on connectivity. With PPPoE, the physical connection is always present but connectivity lapses periodically and must be restarted with a password. Your service provider will advise if you need to configure PPPoE. |
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| Private circuits |
| Private telecommunications circuits between two premises dedicated to the customer's use and permanently connected. |
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| PSTN |
| The Public Switched Telephone Network is the proper name for any fixed phone network. |
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| PDP |
| Packet Data Protocol |
