System and method for the calling party to identify ring tone
A calling party, ringtone technology, applied in the field of communication, can solve the problem of insufficient flexibility in the setting of incoming call alerts, and achieve the effect of personalized incoming call alerts
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[0036] In view of the fact that each communication system (such as GSM, GPRS, EDGE, PHS, CDMA, CDMA1X, WCDMA, CDMA2000, TD-SCDMA, WLAN or Bluetooth, etc.) will send to the communication terminal (mobile phone, base station) a The data packet of the party's phone number, for example, in the GSM system, the data packet is a call setup message (SETUP). The following takes the GSM wireless communication system as an example to further describe the personalized CID information system, communication terminal and implementation method of the present invention in combination with the accompanying drawings and embodiments. The implementation of the caller identification ringtone service in other communication systems such as 3GPP and 3GPP2 is similar and will not be described again.
[0037] The call flow of the currently operating GSM network is as follows:
[0038] The signaling process when the mobile user is the calling party begins with the MS requesting a channel from the BTS un...
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