ITU-T P.311-2011
宽带数字对讲机和头戴式受话机传输特征.12号研究组

Transmission characteristics for wideband digital handset and headset telephones (Study Group 12)


 

 

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标准号
ITU-T P.311-2011
发布日期
2011年03月01日
实施日期
废止日期
中国标准分类号
M40
发布单位
IX-ITU
引用标准
ITU-T G.122-1993 ITU-T G.711-1988 ITU-T G.722-1988 ITU-T G.726 -1990 ITU-T G.729.1-2006 ITU-T G.1020-2006 ITU-T I.412-1988 ITU-T P.10/G.100-2006) ITU-T P.50-1999 ITU-T P.51-1996 ITU-T P.311-2011) ITU-T P.57-2009 ITU-T P.58-1996 ITU-T P.64-2007 ITU-T P.79-
被代替标准
ITU-T P.311-2005
适用范围
This Recommendation provides audio performance requirements and test methods for digital handset and headset telephones capable of transmitting an audio bandwidth extending beyond the conventional telephony bandwidth of 300 Hz to 3400 Hz, to a bandwidth of approximately 100 Hz to 8000 Hz. Such telephones are known as wideband audio telephones, and will make use of digital encoding schemes such as in [ITU-T G.722]. IP terminals may support other coding algorithms. Wideband audio telephones are expected to be used in new services such as high quality audio conferencing, video conferencing and multimedia applications.




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