联邦通信委员会叫停8家语音服务商接入美国网络：多次不回复骚扰电话回溯请求
美国联邦通信委员会（FCC）11 月 13 日宣布，实际上禁止 8 家语音服务商接入美国电话网络，原因是这些服务商多次未回复非法规避电话（骚扰电话）的回溯请求。
按 FCC 规则，语音服务商收到回溯请求后须在 24 小时内回复，回溯是查明非法骚扰电话来源的执法手段。这 8 家服务商多次未作回复，FCC 因此采取切断措施。
FCC 要求，全美各语音服务商须自 11 月 13 日起 2 日内，停止接受来自这 8 家被禁服务商的电话流量。
骚扰电话与冒充来电是美国消费者投诉最集中的通信问题之一。各州总检察长本月也曾联名致函 FCC，要求收紧决定哪些电话公司可以接入美国网络的骚扰电话缓解数据库的准入门槛。（来源：联邦通信委员会）
FCC Effectively Bars Eight Voice Providers from U.S. Networks over Unanswered Robocall Traceback Requests
The U.S. Federal Communications Commission (FCC) announced on November 13 that it has effectively prohibited eight voice service providers from connecting to U.S. telephone networks because the providers repeatedly failed to reply to traceback requests for illegal robocalls.
Under FCC rules, voice service providers must respond to traceback requests within 24 hours. Traceback is the enforcement process used to determine the origins of illegal robocall traffic. The eight providers failed to respond on multiple occasions, prompting the FCC to cut them off.
The FCC directed that all providers operating on U.S. networks must stop accepting traffic from the eight blocked companies within two days of November 13.
Robocalls and spoofed calls are among the most complained-about consumer communications problems in the United States. State attorneys general also wrote to the FCC this month asking it to tighten entry standards for the robocall mitigation database that decides which phone companies may route calls across U.S. networks. (Source: Federal Communications Commission)
来源：联邦通信委员会
发布：GSM·美国（发布链接）
图片来源：图：位于华盛顿的联邦通信委员会（FCC）总部大楼（资料图）。Ser Amantio di Nicolao 摄，CC BY 3.0，经 Wikimedia Commons，已裁 16:9。 / Photo: The Federal Communications Commission (FCC) headquarters building in Washington (file photo). Photo by Ser Amantio di Nicolao, CC BY 3.0, via Wikimedia Commons, cropped to 16:9.
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