Telephonic communications – Special services – Service trigger
Reexamination Certificate
2007-06-26
2007-06-26
Bui, Bing Q. (Department: 2614)
Telephonic communications
Special services
Service trigger
C379S374010
Reexamination Certificate
active
10523837
ABSTRACT:
The present invention relates to method for providing a calling subscriber with an arbitrary sound chosen by a called subscriber instead of a common ringback tone (RBT) with no progress tone. In this present invention, if a call is generated, a terminating exchanger starts paging of the called and simultaneously requests a trunk connection to a sound db server without waiting acknowledgement of the paging from the called based on the first information on whether or not to replace an RBT and the second information on a route to the sound db server that have been received from a home location register (HLR), and provides a called subscriber identification for the sound db 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 RBT 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 RBT with no progress tone.
REFERENCES:
patent: 5926537 (1999-07-01), Birze
patent: 6574335 (2003-06-01), Kalmanek et al.
patent: 7006622 (2006-02-01), Laine
patent: 2001-128247 (2001-05-01), None
patent: 1020000000244 (2000-01-01), None
patent: 1020000012224 (2000-03-01), None
Hahm Hee Hyeok
Kim Ki Mun
Lee Sang Yun
No Yeong Tae
Bui Bing Q.
Lowe Hauptman & Berner LLP
SK Telecom Co. Ltd.
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