noun
transmission protocol; communication protocol
Technical computing term for a set of rules governing data transmission between devices.
この通信手順は、データの送受信を効率的に行うために設計された。
This transmission protocol was designed to efficiently send and receive data.
プロトコル is a more general loanword for 'protocol' in computing and other contexts, while 通信手順 specifically refers to communication/transmission protocols.
Compound of 通信 (つうしん, 'communication') and 手順 (てじゅん, 'procedure, steps').