Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-01-30
2007-01-30
Eng, George (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S414200, C379S207160
Reexamination Certificate
active
10475345
ABSTRACT:
The present invention relates to method and apparatus for providing an arbitrary sound chosen by a called subscriber instead of ringback tone to a calling subscriber. In this present invention, if a call is received, a terminating exchanger requests a trunk connection to a sound db server based on the first information on whether or not to replace a ringback tone and the second information on a route to the sound db server that are received from a home location register (HLR), and provides a called subscriber identification for the sound server. Then, the sound db server searches its db for a sound specified by the called, and provides the found sound for the caller instead of a conventional ringback tone via the terminating exchanger connected through a trunk. Through this sequential procedure of network elements, a caller can hear a sound specified by a called instead of a dry ringback tone.
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International Search Report for PCT/KR03/00368 issued Jun. 19, 2003.
Hahm Hee Hyeck
Kim Ki Mun
Lee Sang Yun
No Yeong Tae
Balaoing Ariel
Eng George
SK Telecom Co. Ltd.
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