| 摘要 |
A method for protecting incoming calls in personalized ring back tone service, which comprising: the service switching point sends an message for triggering intelligent networks service to the service control point; the service control point instructs the service switching point to connect the call to the intelligent peripheral; the service control point reports the connect result and reason to the service control point; the service control point analyzes the connect result as well as its reason, if there is a need to protect the call, the service control point will instruct the service switching point to connect the called number directly; again, the service switching point sends a message for triggering intelligent networks service to the service control point; the service control point sends down the continue message, and the service switching point will connect the called number. The present invention improves the personalized ring back tone service logic, thereby preventing the service control point from releasing the call upon receiving a message of call failure, and improving the call completing rate during utilizing personalized ring back tone service. |
