TCP

Abbreviation for Transmission Control Protocol . In the Internet Protocol suite, a standard , connection -oriented, full-duplex, host -to-host protocol used over packet -switched computer communications networks. Note 1: TCP corresponds closely to the ISO Open Systems Interconnection--Reference Model (OSI--RM) Layer 4 ( Transport Layer ). Note 2: The OSI--RM uses TP-0 or TP-4 protocols for transmission control.