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Chinese National Standard Category: Telephone communication equipment

English Title: Speech Quality and Transmission Performance Requirements and Testing Methods for IP Telephony Terminal Equipment
Chinese Title: IP电话终端设备语音质量及传输性能技术要求和测试方法
Standard No.: YD/T 1686-2007
Category No.: M40
Issued by:
Issued on: 2007-09-29
Implemented on: 2008-1-1
Status: abolished
Superseded by:YD/T 1686-2011 Speech quality and transmission performance requirements and testing methods for IP telephony equipment
Superseded on:2011-6-1
Abolished on:2011-06-01
Superseding:
Word Count:13000 words
Similar Standards: GB 10755-1989   GB/T 12197-1990   YD/T 694-1993   T/CCSA 238.1-2018   GB/T 19516-2017   GB/T 26257-2010   YD/T 1889-2009   YD/T 1394-2009   YD/T 1395-2009   GB/T 17113-2008   GB/T 3482-2008   GB/T 21545-2008   GB/T 9043-2008   JT/T 703-2007   SN/T 1429.7-2007   YD/T 1686-2007   YD/T 1666-2007   YD/T 1623-2007   YD/T 1622-2007   YD/T 868-2007  
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