Inventor
HAM HEE-HYUK
KR3 patents
Patents
3 patentsUS7336777B2Feb 26, 2008
Method and apparatus for managing presenting and changing ring-back sounds in subscriber-based ring-back sound service
SK TELECOM CO LTD22 citations89
US7010112B2Mar 7, 2006
Method of managing trunk and querying and ascertaining ring-back sound to provide ring-back sound in subscriber-based ring-back sound service
SK TELECOM CO LTD28 citations89
US7248851B2Jul 24, 2007
Method for controlling routing information for intellectual peripherals in subscriber-based ring-back-tone-service
SK TELECOM CO LTD9 citations70