The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2006
Filed:
Aug. 07, 2003
Sang-yoen Lee, Kyungki-do, KR;
Hee-hyuk Ham, Seoul, KR;
Ki-moon Kim, Inchon, KR;
Young-tae Noh, Seoul, KR;
Jae-young Park, Sungnam-shi, KR;
Sang-Yoen Lee, Kyungki-do, KR;
Hee-Hyuk Ham, Seoul, KR;
Ki-Moon Kim, Inchon, KR;
Young-Tae Noh, Seoul, KR;
Jae-Young Park, Sungnam-shi, KR;
SK Telecom Co., Ltd., Seoul, KR;
Abstract
The present invention relates to a method of managing a trunk, and querying and ascertaining a ring-back sound to provide the ring-back sound in a subscriber-based ring-back sound service. In the trunk management method, a terminating mobile switching center () requests the intelligent peripheral () to release a trunk call when the terminating mobile switching center recognizes the answer of the terminating subscriber or when a first predetermined period of time has elapsed from a time when it is recognized that a corresponding ring-back sound is provided to the originator. Further, the intelligent peripheral () requests the terminating mobile switching center () to release the trunk call when a second predetermined period of time has elapsed from a time when the ring-back sound is provided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile