Method for realizing color ring back tone service on terminal

Abstract

The present invention aims to provide a method for realizing color ring back tone service on a terminal, involving a service switching point A, a standard protocol stack module B of the called terminal and a call control module C of the called terminal; the terminal user specifies a color ring back tone for C audio files; when a caller calls the called terminal where B and C are located, the call request will first arrive at A, and then A sends the call request to B; after B receives the call request from A, it learns from C that it needs to play CRBT tone, B sends an instruction to A to open the CRBT channel; when A receives the command from B, after confirming that B has opened the CRBT service, he opens the CRBT channel, establishes a call path for the called terminal and the calling party, and notifies B; After B learns about it, he notifies C immediately, and C uses this channel to send the ring back tone to the calling party in the way and format of ordinary ring back tone, and the calling party will hear the ring back tone at this time. The invention achieves the purpose that the end user in the IP domain can freely set the color ring tone, and saves the operator's equipment investment.

Description

technical field [0001] The invention relates to a communication technology combining intelligent network and NGN (Next Generation Networking, next-generation network), in particular to a personalized ring-back tone technology. Background technique [0002] With the continuous development of personalized ring back tone, that is, color ring back tone (or color ring tone, CRBT for short) business in the field of intelligent network communication, and the continuous expansion of user groups, CRBT service is playing a role in the profit growth point of communication operators. playing an increasingly important role. [0003] The current CRBT service is mainly used in fixed-line and mobile communications. Ordinary landlines, mobile phones, and PHS users can set their own CRBT through voice hotlines or operator websites. When people dial their landlines or mobile phones, they will hear The most important thing is not the boring ring back tone, but the music ring tone set by yourse...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the problem in the prior art that operators need to invest in the configuration of the color ring center to open the color ring service for the end users in the IP domain in the NGN with softswitch as the switching center, and to solve the problem in the IP The terminal users in the domain cannot set the color ring back tone at will; and then provide a method for realizing the color ring back tone service on the terminal, and can open and set the color ring back tone at will for the terminal users in the IP domain without increasing investment by the operator Methods

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