Telephonic communications – Special services – Service trigger
Reexamination Certificate
2007-07-10
2007-07-10
Bui, Bing Q. (Department: 2614)
Telephonic communications
Special services
Service trigger
C379S374010
Reexamination Certificate
active
10523792
ABSTRACT:
The present invention provides a caller with an arbitrary sound chosen by a called subscriber instead of a conventional RBT (RingBack Tone) without fails even in a flexible paging mode. In the present method: both exchangers check individually whether first information on replacing RBT or not and second information informing a route to a sound providing means have been stored for a called terminal, when an originating exchanger requests a trunk connection to said both exchangers according to a flexible paging procedure, and receive the first and the second information from a home location register after requesting if said information has not been stored, and request individually a trunk connection to the sound providing means while furnishing information identifying the called, based on the already-stored or the received first and the second information; and the originating exchanger selects one of the two paths connected to said both exchangers, and delivers to a caller an RBT replacing sound determined by the sound providing means that is received through the selected path.
REFERENCES:
patent: 5926537 (1999-07-01), Birze
patent: 6574335 (2003-06-01), Kalmanek et al.
patent: 7006622 (2006-02-01), Laine
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patent: 2002-039501 (2002-05-01), None
patent: WO 00/42763 (2000-07-01), None
Hahm Hee Hyeok
Kim Ki Mun
Lee Sang Yun
No Yeong Tee
Bui Bing Q.
Lowe Hauptman & Berner LLP
SK Telecom Co. Ltd.
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