CN100518219C - Method for realizing color ring back tone service on terminal - Google Patents

Abstract

This invention provides a method for realizing color ring-back service on a terminal relating to a service exchange point A, a standard protocol stack module B of the called terminal and a call control module C of the called terminal, in which, the terminal user assigns a color ring file for the C, when a calling calls the called terminal where B and C place, the call request will arrive at A, which will send the request to B, who gets the color ring sound to be played from C and sends the instruction for opening of the channel of color rings, A receives the instruction from B and determines that B has set up the color ring service and then opens the channel to set up a speech channel for the two party terminals and informs B, who informs C at once, C utilizes this channel to send the color ring sound to the calling party in the form of sending ordinary ring-back sound and the calling party hears the sound.

Description

A kind of method that on terminal, realizes Coloring Ring Back Tone

Technical field

The present invention relates to the mechanics of communication of intelligent network and NGN (Next Generation Networking, next generation network) combination, relate in particular to the Customized Ring Back Tone technology.

Background technology

Along with Customized Ring Back Tone in the intelligent network communication field is that Comfort Noise Generation (CNG) (or is called colored the tinkle of bells, be called for short CRBT) professional continuous development, more and more important role is just being played the part of in the continuous expansion of customer group, Ring Back Tone service in the profit growth point of common carrier.

Present Ring Back Tone service is mainly used in fixed network and the mobile communication, common base or cell phone, the Personal Handyphone System CRBT that oneself can be set by voice hot line or operator website per family, when the base of being dialed oneself by the people or mobile phone, that hears is being not uninteresting ring-back tone, but the music bell sound that oneself is provided with.Its main implementation procedure is: a) calling subscriber makes a call to Service Switching Point, and SSP is according to Ring Back Tone service marker character trigger intelligent business and reporting service control point (SCP) in calling out, and SCP finds the CRBT number, issues this CRBT number to SSP; B) SSP makes a call to called subscriber and CRBT center respectively according to the CRBT number that obtains; C) by SSP control, determine speech channel that a called subscriber is connected with the calling subscriber through SSP and control by SSP, set up and connect a CRBT center and pass through the speech channel that SSP is connected with the calling subscriber; D) the CRBT center is play Comfort Noise Generation (CNG) by the speech channel between CRBT center and the calling subscriber to the calling subscriber; E) called subscriber's off-hook is connected the speech channel between calling subscriber and the called subscriber, and calling subscriber and called subscriber utilize this speech channel conversation, and simultaneously, SSP removes and being connected and discharging the CRBT center resources of CRBT center.

If in the next generation network (NextGeneration Net is called for short NGN) that with soft switch (SoftSwitch) is switching center, called being in the IP territory, can adopt with above-mentioned the same mode is that the terminal of having bound fixed number is opened Ring Back Tone service.But, wanting to open the CRBT center that Ring Back Tone service needs configure dedicated, this is an investment for operator; And, after Ring Back Tone service is opened in paying, need step on mode by voice hot line or website or the short message of landing operator for the terminal use who has bound fixed number, could select and be provided with the CRBT of oneself; Because the bell sound storehouse that provides of operator is huger usually, so the user can feel cumbersome when selecting, and the while is uncertain can be found and oneself want the CRBT that is provided with.

Summary of the invention

Technical problem to be solved by this invention is: overcome the operator that exists in the prior art need invest configuration CRBT center could be for being to be among the NGN of switching center that terminal use in the IP territory opens the problem of Ring Back Tone service and the terminal use that is in the IP territory can not oneself arbitrarily be provided with the defective of CRBT sound with the soft switch; And then a kind of method that realizes Coloring Ring Back Tone on terminal is provided, need not operator's increase investment and just can open the method that the CRBT sound arbitrarily is set for the terminal use who is in the IP territory.

The present invention is by the following technical solutions:

A kind of method that realizes Coloring Ring Back Tone on terminal relates to the standard protocol stack module B of Service Switching Point A, terminal called and the calling control module C of terminal called; This method may further comprise the steps:

Step 1: the terminal use specifies CRBT sound file for C;

Step 2: when certain calling B and C place terminal called, the call request meeting at first arrives A, and A issues B to call request again;

After step 3: B received the call request that A sends, learning from C needed the coloring ring back tone playing sound, and then B will send the instruction of opening the CRBT passage to A;

Step 4: A receives that B sends when opening the CRBT channel instruction, after confirming that B place terminal is registered and having opened Ring Back Tone service, open the CRBT passage immediately, for setting up the speech channel of a connection between terminal called and the caller, and notice B CRBT passage is opened;

Step 5: B will notify C immediately after learning that passage has been opened, utilize this passage that the CRBT sound is sent to caller with mode and the form that sends common ring-back tone by C, and caller this moment will be heard the CRBT sound that C plays.

Further, when terminal called user off-hook or caller cancellation calling, C will stop the coloring ring back tone playing sound.

Beneficial effect: adopt the method for the invention, compared with prior art, reached the terminal use who is in the IP territory purpose of CRBT sound can arbitrarily be set, and saved the equipment investment of operator.

Description of drawings

Fig. 1 uses network organizing figure of the present invention;

Fig. 2 is the Signalling exchange flow chart of the embodiment of the invention, is example with the Session Initiation Protocol;

Fig. 3 is a business realizing flow chart of the present invention.

Embodiment

Below in conjunction with accompanying drawing, the enforcement of technical scheme is described in further detail:

Fig. 1 uses network organizing figure of the present invention: service switching point wherein is often referred to soft switch SoftSwitch.Caller can be any kind, as fixed line, and GSM, CDMA or 3G mobile, PHS, or be in software terminal in the IP territory, IAD (integrated access equipment), 323 terminals, 248 terminals etc.The terminal called that can realize the terminal Ring Back Tone service must be the terminal that is in the IP territory, as software terminal, IAD, 323 terminals or 248 terminals etc. or can insert the portable terminal (as 3G mobile, PDA mobile phone) in IP territory etc.IAD will be according to the difference of terminal and difference, if terminal is in the IP territory, then IAD can be BGW (BROAD GATEWAY, a broadband gateway), or it is direct-connected to SSP by terminal to need not IAD; If terminal is the terminal in the non-IP territory, then IAD is the combination of switch and Tandem Gateway, SGW and media gateway.

Fig. 2 may further comprise the steps for being the Signalling exchange flow chart of example with the Session Initiation Protocol:

The first step: at first SoftSwitch issues called SIP terminal with the call request of caller by INVITE, can have media description information SDP among the INVITE;

Second step: after the Session Initiation Protocol stack module on the called SIP terminal is received INVITE, at first return 100Trying message, represent the called INVITE that handling to SoftSwitch;

The 3rd the step: when learn the Call Control Block of Session Initiation Protocol stack module on called SIP terminal on the called SIP terminal need the coloring ring back tone playing sound after, to return 183Ringing (or 180Ringing) message to SoftSwitch, and have a SDP, if have SDP among the previous I NVITE, then this moment, the SDP among the 183Ringing was media negotiation result (being the encoding and decoding agreement that both sides have decided through consultation audio frequency), carried out media negotiation otherwise the SDP among this moment 183Ringing represents request;

The 4th step: after SoftSwitch receives 183Ringing, if this moment, media negotiation was finished, then according to the registered Ring Back Tone service mark of called SIP terminal, for called SIP terminal is opened the CRBT passage, between called SIP terminal and caller, set up a connection, and return PRACK to called SIP terminal immediately, if be not with SDP among the previous I NVITE, then have SDP media negotiation result among the PRACK;

The 5th step: after called SIP terminal is received PRACK message, the CRBT passage coloring ring back tone playing sound that provides by protocol stack module will be provided by the Call Control Block of called SIP terminal, and return ACK message to SoftSwitch immediately.

Fig. 3 is the realization flow figure of terminal Ring Back Tone service of the present invention, may further comprise the steps:

The first step: be in the at first successfully registration on SSP of terminal called in the IP territory, and Ring Back Tone service is opened in registration;

Second step: the terminal called that is in the IP territory is specified CRBT sound file by the user, specify the mode of CRBT sound different because of the difference of terminal type, if software terminal, then can directly specify CRBT sound file, if IAD, H.323, H.248 or 3G terminal then can download in the terminal by data wire;

The 3rd step: after the call request of caller arrived SSP, SSP can issue this request the terminal called that is in the IP territory;

The 4th step: after being in terminal called in the IP territory and receiving call request, at first and carry out media negotiation between the SSP, if consult to pass through, then SSP is under the prerequisite of learning the registered Ring Back Tone service of opening of this terminal called, open media channel, for setting up a connection between terminal called and the caller;

The 5th step: called just can pass through this connection this moment, and the CRBT sound is played to caller, and caller at this moment just can have been heard the CRBT sound of called setting;

The 6th step: when caller cancellation calling or terminal called user off-hook, terminal called will stop the coloring ring back tone playing sound, and whole service is finished.

In sum, the present invention is in end side, need not to carry out the hardware device investment and be in the method that terminal use in the IP territory opens Ring Back Tone service for operator provides a kind of with regard to can be all, and, no longer be subjected to the method for operator's CRBT storehouse restriction simultaneously for the ordinary terminal user who is in the IP territory provides a kind of CRBT of oneself liking that arbitrarily is provided with.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (2)

1. a method that realizes Coloring Ring Back Tone on terminal relates to the standard protocol stack module B of Service Switching Point A, terminal called and the calling control module C of terminal called, and described terminal called is in the IP territory at the NGN that with the soft switch is switching center; This method may further comprise the steps:

Step 1: the terminal use specifies CRBT sound file for C;

Step 2: when certain calling B and C place terminal called, the call request meeting at first arrives A, and A issues B to call request again;

After step 3: B received the call request that A sends, learning from C needed the coloring ring back tone playing sound, and then B will send the instruction of opening the CRBT passage to A;

Step 4: A receives that B sends when opening the CRBT channel instruction, after confirming that B place terminal is registered and having opened Ring Back Tone service, open the CRBT passage immediately, for setting up the speech channel of a connection between terminal called and the caller, and notice B CRBT passage is opened;

Step 5: B will notify C immediately after learning that passage has been opened, utilize this passage that the CRBT sound is sent to caller with mode and the form that sends common ring-back tone by C, and caller this moment will be heard the CRBT sound that C plays.

2. method according to claim 1 is characterized in that, when terminal called user off-hook or caller cancellation calling, C will stop the coloring ring back tone playing sound.

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