Belling method by dialing transmission
An implementation method and technology of the calling party, applied in the direction of special services for subscribers, etc., can solve the problems such as the inability of ringing to exert influence
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[0011] In order to realize the playing of the ringing sound transmitted by the calling party at the called party, first the communication terminal must satisfy the selection, sending (when initiating a call), identification and triggering (when receiving a call) and storage functions of the ringing signal. When the communication terminal initiates a call, it needs to select a ringing sound as a necessary part of initiating the call. At the same time, the ringing sound file has a special identification, which can let the network and the terminal of the other party know that the calling party is carrying a ringing sound. ringtones. After receiving the call, the receiving terminal can recognize the ringing sound file sent by the calling party, and use the file as the sound source of the ringing sound to trigger the ringing circuit of the terminal to work. In order to realize the above functions, the communication protocol for the call establishment between the terminal and the ne...
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