"This document presents guidelines for creating representative@ regional wireless location indoor test beds. The regional test beds selected and presented herein are representative of the different areas of the country (e.g.@ Philadelphia is representative of the Northeast). Each test bed contains various types of indoor structures typical of its region together with corresponding indoor test scenarios. These regional test beds can be used in assessing the indoor performance of various wireless location technologies@ whether during their initial evaluation or upon wider deployment. Together with approaches defined in this document to extrapolate the results from a given regional test bed@ the results can be applied to a much wider area with similar characteristics. The consensus in this ESIF committee is that representative indoor testing in properly selected regional test beds should form the basis for establishing accuracy compliance@ in lieu of widespread (and impractical) localized indoor testing@ e.g.@ at the county level. The FCC in its recent Fourth Report and Order has accepted this methodology as the framework to establish network-wide compliance with its stated requirements for E911 location accuracy. This document with its guidelines@ which focuses on indoor location@ is separate and distinct from ATIS-0500001 ""High Level Requirements for Accuracy Testing Methodologies"". ATIS-0500001 provides guidelines for the testing of E911 wireless location technologies for compliance with the E911 Phase II FCC-mandated outdoor location accuracy requirements outlined in FCC Docket 94-102@ Third Report and Order. Other topics that are not addressed in this document include static versus dynamic indoor testing and use of warm versus hot start (with no erasure of prior position). These topics are to be addressed in future efforts by ESM as technology evolves. Additionally@ the topic of how to apply the described test methodology to smaller carriers who may not have coverage in the recommended test regions is deferred to future additions to this document. Purpose The purpose of this document is to identify a framework for testing indoor location technologies for E911 and establishing expected performance of those technologies on a wide scale. It is also intended to support an indoor accuracy compliance process to demonstrate meeting the wireless E911 location accuracy requirements specified in the FCC's Fourth Report and Order. This framework is based on using a set of representative@ regional indoor test beds that can be used for indoor location accuracy assessment in lieu of widespread localized indoor accuracy testing. The regional test beds are described along with the parameters that can be used and the requirements to be satisfied in the extrapolation process from a regional test bed to a much wider area with similar characteristics. For two of the identified test bed locations@ the San Francisco Bay Area (including San Jose and its surroundings) and Greater Philadelphia@ this document outlines in some detail the polygons around the representative morphologies in each of the test bed areas. It also identifies for those two test beds the region-appropriate types of permanent structures and different call scenarios within a given structure. These details are intended to serve as guidelines for the remaining test bed locations@ for the creation of polygons@ and the identification of appropriate permanent structures and test scenarios."