China 'YD/T 1657.2-2007 ' 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 1657.2-2007

Issued Date:2007-07-20

Implemented Date:2007-12-01

Issued by:

The Standardization Administration of the People's Republic of China

GB Standard Code	YD/T 1657.2-2007
Standard Category	China Telecommunication Standards
GB Standard English Title	Technical Specification for the Proxy Supporting Network Address Translation/Firewall Traverse of Multimedia Services. Part 2: SIP Proxy
GB Standard Chinese Title	支持多媒体业务网络地址翻译/防火墙(nat/fw)穿越的代理设备技术要求第2部分:sip代理
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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