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T1.221-1995(R2004) Reaffirmed, 2004 OAM&P - 服务中,非插入测量装置(NMD)语音业务测量
标准号 T1.221-1995(R2004)     登录可关注该标准
中文名称 OAM&P - 服务中,非插入测量装置(NMD)语音业务测量
英文名称 OAM&P - In-Service, Nonintrusive Measurement Device (NMD) Voice Service Measurements
发布日期 2004-06-01
工作组 Committee T1 Subcommittee:T1M1
标准状态 标准的状态、替代、引用关系等信息只对网员开放,请登录
摘要 This standard provides specifications for in-service nonintrusive measurement devices (INMD) used to measure various parameters of importance to voice service transmission maintenance of telecommunications networks. These measurement devices are used primarily for the measurement of voicegrade analog parameters such as speech level, noise level, echo path loss and echo path delay. This standard specifies interface, measurement range and accuracy requirements for measuring voicegrade transmission parameters as well as descriptions of optional functions associated with these parameters. Descriptions of measurement algorithms that have been verified to meet the accuracy requirements of this standard for the measurement of speech level, noise and echo path delay are included in an annex.


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