本文件旨在作为北美标准，用于将使用在役非侵入式测量设备（INMDs）进行的测量与语音服务的客户意见模型中使用的参数进行映射。本标准包括执行该映射的数学算法，并允许根据INMD测量结果确定客户意见评级。

This document is intended for use as the North American standard for mapping measurements made with In-Service, Non intrusive Measurement Devices (INMDs) to the parameters used in customer opinion models for voice services. This standard includes mathematical algorithms which perform this mapping and allow customer opinion ratings to be determined from INMD measurements.