Pedi:
An interim term for the standards describingthe provision of EDI over X.400 (X.435 or F.435)

Pilot Project:
Project of two or more EDI trading partners to test the viability of a proposed EDI SYSTEM.

Private Network:
A network established and operated by a private organization or corporation for users within that organization or corporation.

Protocol:
Formal set of rules governing the format, timing, sequencing, and error control of exchanged messages on a data network; may be oriented toward data transfer over an interface, between two logical units directly connected, or on an end-to-end basis between two users over a large and complex network.

PTT (Postal, Telegraph and Telephone Agencies):
A generic name for government agency responsible for operating a nation's communications services and systems.

Public Network:
Generically, a network operated by commoncarriers or telecommunications administrations for the provision of circuit-switched, packet-switched, and leased-line circuits to the public.