China 'YD/T 2011-2009 ' Industry standard english version:

中华人民共和国行业标准
INDUSTRY STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA

YD/T 2011-2009

Issued Date:2009-12-11

Implemented Date:2010-01-01

Issued by:

The Standardization Administration of the People's Republic of China

GB Standard Code	YD/T 2011-2009
Standard Category	China Telecommunication Standards
GB Standard English Title	Technical requirements of services based on the unified IMS. Call waiting (CW) and call HOLD (HOLD) service (Release 1)
GB Standard Chinese Title	基于统一ims的业务技术要求呼叫等待与呼叫保持业务（第一阶段）
Chinese Version Price	$5.00 per 1 page
English Translation Fee	$15.00~$30.00 per 1 page
Member Price	10%~50% off


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