scope:

This document details definitions, methods of measurement, and minimum electro-acoustic performance characteristics for Code Division Multiple Access (CDMA) mobile stations. These standards are intended to ensure a level of electro-acoustic performance approaching that defined by the ITU-T for PSTN circuits. These electro-acoustic requirements are applicable to all Speech Service Options supported by the mobile station. These requirements are applicable to mobile station handsets. Requirements for loudspeaker, headset, and hands-free configurations are not addressed in the current  document and are for further study. Test methods are recommended in this document; however, methods other than those recommended may suffice for the same purpose.