| 摘要 |
A system and method for providing ring back tone (RBT) in communication network are disclosed by present invention. Through the manners comprising intelligent network triggered, signaling halting triggered, call forwarding triggered or switching device triggered and etc, to judge whether or not a user is RBT service registered user, and is so, to build the connection between the calling switching-device and called switching-device, and to build the connection between switching-device and RBT device. When the called status is idle, the RBT device provides a RBT customized by user to the calling user, and therefore replaces the conventional RBT. |
