Method of managing trunk and querying and ascertaining...

Details Method of managing trunk and querying and ascertaining... Method of managing trunk and querying and ascertaining...

2006-03-07

2006-03-07

Tieu, Benny Quoc (Department: 2642)

Telephonic communications

Special services

Service trigger

C379S230000

Reexamination Certificate

active

07010112

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 (32) requests the intelligent peripheral (50) 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 (50) requests the terminating mobile switching center (32) to release the trunk call when a second predetermined period of time has elapsed from a time when the ring-back sound is provided.

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