User Group; The assessment of the overall Quality of Services (QoS) as perceived by the users; Definition of QoS indexes for all the customer relationship stages
用户组；对用户感知的整体服务质量（QoS）进行评估；定义所有客户关系阶段的QoS指标

2012-03-01

User Group; Quality of ICT Services; Assessment process of the QoS parameters of the customer relationship stages
用户组；信息和通信技术服务的质量；客户关系阶段QoS参数的评估过程

2011-06-30

User Group; Quality of ICT services; Definitions and methods for assessing the QoS parameters of the customer relationship stages other than utilization
用户组；信息和通信技术服务的质量；评估客户关系阶段（而非利用率）QoS参数的定义和方法

2013-03-01

User Group; Quality of ICT Services; Requirements for Bodies Providing Conformity Assessment of Checking-up on Metering and Billing Processes
用户组；信息和通信技术服务的质量；对提供计量和计费流程检查合格评定的机构的要求

2010-05-31

Speech Processing, Transmission and Quality Aspects (STQ);User related QoS parameter definitions and measurements;Part 2: Voice telephony, Group 3 fax, modem data services and SMS
语音处理、传输和质量方面（STQ）；与用户相关的QoS参数定义和测量；第2部分:语音电话、第3组传真、调制解调器数据服务和SMS

2009-12-29