Wireless Developer Network Glossary
Packet - A packet is the unit of data that is routed between an origin and a destination on the Internet or any other packet-switched network.
PalmOS - Palm OS is the computer operating system that provides a software platform for the PalmPilot series of handheld personal digital assistants made by Palm Computing. Palm OS was designed from the beginning to fit into a palm-size device of a specific size and with a specific display size.
PC Card - Formerly called a PCMCIA card, a detachable card that can be connected to the mother board inside a personal computer. It is used to link the PC to other devices to carry out a special function.
PCIA - Personal Communications Industry Association. A trade group representing PCS, SMR, private radio and other wireless users and carriers.
PCS - Personal Communications Services. Used to describe a newer class of wireless communications services recently authorized by the FCC. PCS systems use a different radio frequency(the 1.9 GHz band) than cellular phones and generally use all digital technology for transmission and reception.
PDA - Personal Digital Assistant. A portable computing device capable of storing and, optionally, transmitting data.
PGP - Pretty Good Privacy. A popular program used to encrypt and decrypt e-mail over the Internet.
POP - Persons of Population. This term is used to designate the number of potential subscribers in a market.
POTS - Plain Old Telephone Service. Another name for traditional wired, land based telephone service.
PSTN - Public Switched Telephone Network. The worldwide voice telephone system, also called the Bell System in the United States.