Inventor
ZHU YUNWEN
CN4 patents
Patents
4 patentsUS8565382B2Oct 22, 2013
Method for obtaining information of key management server, and method, system and device for monitoring
TIAN TIAN2 citations58
US9077806B2Jul 7, 2015
Method, system and apparatus for implementing secure call forwarding
TIAN TIAN1 citations47
US8855315B2Oct 7, 2014
Method and system for realizing secure forking call session in IP multimedia subsystem
TIAN TIAN0 citations36
US8705745B2Apr 22, 2014
Method and system for transmitting deferred media information in an IP multimedia subsystem
TIAN TIAN0 citations36