在混合环境中越来越多地使用UE设备推动了识别客户的愿望？s的位置超出了今天使用的标准纬度/经度。提供室内射频覆盖的新兴技术，以及需要小信号足迹的射频挑战区域的覆盖技术正在发展，以纳入额外的位置信息。没有通用标准来包含用于交付ALI数据库的补充位置数据（如果可用），以便PSAP可以访问和利用这些信息（如果PSAP有可用的工具）。

Growing uses of UE devices in mixed environments are driving the desire to identify a customer?s location beyond the standard latitude / longitude as used today. Emerging technologies providing indoor RF coverage as well as coverage in RF challenged areas requiring a small signal footprint are evolving to incorporate additional location information. There is no common standard for including supplemental location data, if available, for delivery the ALI database so a PSAP can access and utilize the information if the PSAP has available tools to do so.