Here he oversaw a staff of technicians who watched visual monitors, computer readouts, and a telephone switchboard that kept him in contact with the many security personnel he commanded.
在这里他监督所有技术人员监视着屏幕，电脑输出以及电话总机，并与所有他手下的安全人员保持联系。
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If those noises prove unique to each individual, it could boost the security of call-centre and telephone-banking transactions and reduce the need for people to remember numerous identification codes.
“We’ve seen a sustained drop in global volumes, ” Henry Stern, a senior security analyst at Cisco Systems, said in a telephone interview from San Francisco.