China 'YD/T 1522.4-2009
' Industry standard english version:
YD
中华人民共和国行业标准
INDUSTRY STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
YD/T 1522.4-2009
Technical Requirements for Session Initiation Protocol. Part 4: SIP’s Applications about call control Based on Softswitching Network 会话初始协议(sip)技术要求 第4部分:基于软交换网络呼叫控制的sip协议
Issued Date:2009-06-15
Implemented Date:2009-09-01
Issued by:
The Standardization Administration of the People's Republic of China
GB Standard Code
YD/T 1522.4-2009
Standard Category
China Telecommunication
Standards
GB Standard English Title
Technical Requirements for Session Initiation Protocol. Part 4: SIP’s Applications about call control Based on Softswitching Network