本技术报告分析了非互联网协议（IP）呼叫认证机制，以确定它们在增强型9-1-1（E9-1-1）和过渡型下一代9-1-1（NG9-1-1）体系结构中处理9-1-1呼叫的适用性。

This Technical Report analyzes non-Internet Protocol (IP) call authentication mechanisms to determine their applicability to the handling of 9-1-1 calls in the context of Enhanced 9-1-1 (E9-1-1) and transitional Next Generation 9-1-1 (NG9-1-1) architectures.