In july 1996 us federal communication commission ( fcc ) issued the e - 911 mandate stating that all wireless carriers must provide the geolocation of an emergency 911 caller to the appropriate public safety answering point 1996年7月，美国联邦通信委员会（ fcc ）发布了e - 911条例，要求移动通信运营商在求助者使用移动电话拨打紧急求助电话时，能够对其迅速定位。
