In DECnet, an idle state in a session that uses brackets. A bracketed exchange has ended. Normal-flow data cannot be transmitted when a bracketed session is BETB.; 在DEC網(wǎng)絡(luò)中,使用括號(hào)協(xié)議的話路中的一種空閑狀態(tài),表示已經(jīng)結(jié)束使用括號(hào)協(xié)議的信 息交換。當(dāng)使用括號(hào)協(xié)議的話路處于BETB狀態(tài)時(shí),不能傳輸正常流數(shù)據(jù)。