呼叫者通过按键话机触发系统软件.The caller activates the system software through touch tone telephone.通话呼叫者和通话接收者都由SIP地址来识别.Callers and call receivers are identified by SIP addresses.识别恶意呼叫者.Identification of malicious callers....

“呼叫者”的英语可以翻译为：[计] call subscriber，caller ...