- noun a set of pre-agreed signals, codes and rules to be used for data exchange between systems
- A standard, or a set of rules which must be agreed upon in order for two or more devices, such as modems, to exchange information effectively. Such conventions must include considerations such as how to initiate and terminate a transmission, the transmission speed, and whether the transmission will be synchronous or asynchronous. In addition, these may include error-detection techniques, encryption, and so on. Examples of communications protocols include point-to-Point Protocol, and Zmodem. Also called communications protocol.
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