This Technical Report (TR) provides a high-level service description of the Emergency Telecommunications Service (ETS)@ its requirements and objectives@ and of current standardization initiatives with a focus on forums and committees of the Alliance for Telecommunications Industry Solutions (ATIS). It is not expected that all of the requirements discussed in this TR will be accomplished at the same time. However@ due to the importance of the ETS@ it is hoped that those requirements that can be satisfied quickly will be included in Standards and TRs in the near future. This TR does not address the feasibility and priority of the requirements stated in the document. Also@ it neither endorses nor recommends any given architectural solutions to satisfy these requirements. Purpose This TR describes the ETS and offers some example service scenarios. It provides an overview of the requirements for ETS and discusses current activities regarding ETS standardization. This TR presents an overview of the basic requirements@ features@ and concepts for ETS that packet-based telecommunication and Third Generation (3G) mobile networks are capable of providing and that must receive attention during the process of the convergence of these technologies. Specific solutions are not offered@ but this TR will be useful in advancing the work on ETS standards. Application As stated above@ this TR is meant to be applied by those standards bodies; particularly@ ATIS Committees@ in their work on current and future enhancements to evolving networks. This TR will provide much-needed guidance concerning where issues are being addressed relating to ETS requirements.