ATIS-1000074。ATIS关于使用令牌（SHAKEN）基于签名处理断言信息的标准v002定义了会话启动协议（SIP）流量的呼叫认证方法，但没有解决非互联网协议（IP）流量。本技术报告仅限于针对非IP场景提出的呼叫认证方法。

ATIS-1000074.v002, ATIS Standard on Signature-based Handling of Asserted information using toKENs (SHAKEN), defines a call authentication approach for Session Initiation Protocol (SIP) traffic but does not address non-Internet Protocol (IP) traffic. This Technical Report is limited to call authentication approaches that have been proposed for non-IP scenarios.