CN100502437C

CN100502437C - Method for realizing color bell service

Info

Publication number: CN100502437C
Application number: CNB200510043193XA
Authority: CN
Inventors: 李娜; 郭会侠; 王伟; 李鹏
Original assignee: Xian Datang Telecom Co Ltd
Current assignee: Xian Datang Telecom Co Ltd
Priority date: 2005-09-06
Filing date: 2005-09-06
Publication date: 2009-06-17
Anticipated expiration: 2025-09-06
Also published as: CN1929516A

Abstract

This invention discloses one method to realize color ring, which comprises the following steps: SSP receives business require generating call section A to send require message of SCP; SCP indicating SSP generation section B to determine user connection to user path through SSP; SCP indicating SSP by use of call section A to connect intelligent outset main call user connection dialogue to supply call user to play color ring; the call section B receives called user to connect and switch with outlet to discharge self materials; SCP indicating SSP for integrating section A and B to connect call user and called user for dialogue.

Description

A kind of method that realizes Ring Back Tone service

Technical field

The present invention relates to communication technical field, relate in particular to the implementation method of a kind of Ring Back Tone service in moving communicating field.

Background technology

Releasing various value-added services based on the network platform separately is one of the focuses in current operation market, operator can realize professional differentiation on the one hand by the attraction of new business, improve the market competitiveness of self, further enlarge the existing business user group on the other hand, the potentiality of deeply excavating network improve economic well-being of workers and staff, and Ring Back Tone service is the novel value-added service that occurs under this background.

Ring Back Tone service, i.e. " personalized ring back tone service ", be a kind ofly to customize by the called subscriber, after the calling subscriber makes a call and before the called subscriber normally answers, the Customized Ring Back Tone that provides one section melodious music or greeting or called subscriber to set up on their own for the calling subscriber substitutes the business of common ring-back tone.

The technology of Ring Back Tone service realization at present has following three kinds of modes: mode, service node mode and the Intellight network mode of revising the switch program.

The mode of revising switch software is to revise the software that the switch basic call is handled, the mode of calling out access procedure at switch inter-process CRBT.The shortcoming of this mode is need to revise the switch program, and the stability that this has just reduced switch has increased the failure rate of switch.

The service node mode is to utilize the Routing function of switch to send the CRBT sound; the shortcoming of this mode is to be used for extensive commercial service; compare with modification switch software mode; need a large amount of being used to send the trunk line of CRBT; investment cost is excessive; and owing to the structural reason of call treatment; when causing with original value-added service combination; the anomaly that regular meeting's generation can't be estimated; and when service node broke down, the general calling of color ring user was handled and can not normally be carried out.

Intellight network mode realization Ring Back Tone service is just realized with CS1 (Capability Set capability set 1) mode at present, this need revise the switch program, reduced the stability of switch, increased the failure rate of switch, and CRBT all is to use IVR (Interactive Voice Response) playback at present, the signaling of all relevant playbacks all will pass through SSP (Service Switching Point Service Switch Point), occurs the phenomenon of the too much and disposal ability deficiency of Signalling exchange easily.

Summary of the invention

The purpose of this invention is to provide a kind of safe, reliably, Ring Back Tone service implementation method easily.The method is to use the control mode based on CS2 (Capability Set capability set 2) multiple call sections service to realize, only need to upgrade upgrading SCP (service control point), need not to revise the switch program, and added ip intelligent peripherals and carried out operation flow control and business datum maintenance, significantly reduced the Signalling exchange of end office switch, reduced the signaling traffic load of end office switch, increased the call completing rate of Ring Back Tone service simultaneously, even can't hear the ordinary call that the CRBT sound also can not influence the user owing to system's reason makes the user.

The present invention is a kind of method that realizes Ring Back Tone service, it is characterized in that may further comprise the steps at least:

(1) calling user dials called number, the end office switch at calling subscriber place is initiated service request, after SSP receives service request, generate call leg A and send a request message to SCP, SCP obtains the CRBT numbering that the called subscriber registers in advance from Service Database;

(2) SCP indication SSP generates new call leg B, and SSP generates call leg B according to the indication of SCP, and by call leg B determine one be in can on-state the called subscriber through the speech channel that SSP is connected with the calling subscriber, be initiated to called subscriber's calling;

(3) SCP indication SSP sets up and connects an ip intelligent peripherals that is in normal operating conditions and passes through the speech channel that SSP is connected with the calling subscriber with call leg A;

(4) SCP directly indicates ip intelligent peripherals to play the corresponding CRBT sound of CRBT numbering that this called subscriber registers in advance to the calling subscriber, and ip intelligent peripherals finds the CRBT sound and plays this CRBT sound according to the calling in the step (3) to the calling subscriber;

(5) receive called subscriber's off-hook response message in call leg B, SSP reports SCP, SCP indication SSP with among the call leg A with cut-outs that be connected of ip intelligent peripherals, SSP removes the speech channel that step (3) is set up after receiving message, the own resource of ip intelligent peripherals release simultaneously;

(6) SCP indication SSP merges call leg A and call leg B, and connects the speech channel between the determined user of step (5), and calling subscriber and called subscriber utilize this speech channel to converse.

Wherein, the described SSP of step (1) comprises to the request message that SCP sends: start DP message, comprise the call leg information of generation in the described startup DP message.

Wherein, the described SCP of step (2) indication SSP generates the message that new call leg B comprises has: start call attempt message.

Wherein, the described SCP of step (3) indication SSP sets up and connects the message that an ip intelligent peripherals passes through the speech channel that SSP is connected with the calling subscriber and comprises with call leg A: set up interim connection message.

Wherein, the described SCP indication of step (4) ip intelligent peripherals comprises for the message of calling subscriber's coloring ring back tone playing sound: be connected to message related to resources and broadcast notification message.

Wherein, step (5) further comprises: the end office switch at called subscriber place sends response message to SSP, after SSP receives this message, sends BCSM event report message to SCP.

Wherein, step (5) further comprises: after SCP receives BCSM event report message, send cut-out forward connection message to SSP, indication SSP dismounting is connected with ip intelligent peripherals; SSP sends release message to ip intelligent peripherals after receiving message, the speech channel of release and ip intelligent peripherals, and ip intelligent peripherals discharges own resource simultaneously.

Wherein, the described SCP indication of step (6) SSP comprises call leg A and call leg B merging: SCP sends after the merging call leg message to SSP, sends the continuation message of band parameter to SSP.

Wherein, step (6) further comprises: SSP merges call leg, and sends response message for the end office switch at calling subscriber place, makes the calling and called user enter talking state.

As seen, the present invention has the following advantages:

The present invention has adopted the control method based on the multiple call sections service of intelligent network of CS2, the multiple call sections model can be controlled the calling that the multi-user participates in quick, convenient, neatly, therefore can overcome effectively prior art scheme performance period long, maintenance cost is high, the shortcoming of poor stability.

In addition, the control method of multiple call sections service can be after the SCP upgrading, need not to change the equipment of the core network program, only need the service logic script of SCP side according to client's needs, customize new service logic, finish the multi-call service flow processing, just can satisfy the demand of user for multiple call sections service fully, the realization business is very simple and convenient.

Ring Back Tone service belongs to called series intelligent service, because service attribute is with called relevant, switch is continued in the centre can't its service attribute of perception, makes the whole network business be difficult to carry out fast.Ring Back Tone service adopts the control mode of multiple call sections service, can overcome the shortcoming and defect that prior art exists.

Description of drawings

Fig. 1 realizes the networking schematic diagram of Ring Back Tone service for the present invention;

Fig. 2 realizes the flow chart of Ring Back Tone service for the present invention;

Fig. 3 is in one embodiment of the invention, the flow chart of dismantling call when the called subscriber can't connect;

Fig. 4 is in one embodiment of the invention, realizes the flow chart of ordinary call when ip intelligent peripherals breaks down.

Specific implementation method

Below in conjunction with accompanying drawing, specify the present invention.In the embodiment of the following stated, user A is the calling subscriber, and user B is called subscriber's (having applied for the user of Ring Back Tone service).Preestablished the trigger data of Ring Back Tone service on the SSP.

Referring to Fig. 1, it realizes the networking schematic diagram of SCDMA (S-CDMA) wireless access system Ring Back Tone service for the present invention.What LS represented in Fig. 1 is the end office switch at user place, and SSP represents Service Switching Point, and IP represents ip intelligent peripherals, and SCP represents service control point.The dotted line that is in the below in two bent dotted lines among the figure is the speech channel of expression calling and called user's communication, the path the when dotted line above being in two bent dotted lines among the figure is represented coloring ring back tone playing.

In conjunction with Fig. 2, when user B made a call, the present invention realized that Ring Back Tone service specifically needs following steps at user A:

Step 201: user A dialing numbers, the LS of user A sends IAM (initial message) message to SSP, thereby makes a call, and wherein the LS of user A comprises called number in the IAM message that SSP sends;

Step 202:SSP inserts sign indicating number before according to the Ring Back Tone service in the IAM message and triggers an intelligent network business corresponding with Ring Back Tone service, SSP generates call leg A and sends startup DP message (IDP) to SCP then, the SSP trigger intelligent business also reports SCP, wherein: in IDP message, include the call leg parameter of definite Ring Back Tone service key assignments, rear subscriber number, called number and generation of SSP and SCP;

Step 203:SCP selects the Ring Back Tone service logic flow according to professional key assignments, and to SSP transmission request report BCSM (Basic Call State Model BCSM) event message (RRBE), indication SSP user A is set to EDP_R (Event Detection Point _ request), wherein: in RRBE message, including the BCSM event type is that O_ abandons (make a start and abandon);

Step 204:SCP sends to SSP and starts call attempt message (ICA), and indication SSP generates new call leg B and LEG (calling party);

Step 205:SCP sends RRBE message to SSP, and indication SSP is that newly-generated LEG is provided with EDP_N (Event Detection Point notice); Wherein: in RRBE message, including the BCSM event type is that O_ attempts (trial of making a start), O_ routing failure (routing failure of making a start), O_ replys (make a start and reply), O_ no response (no response of making a start), O_ Called Busy (Called Busy of making a start); SCP sends RRBE message again for SSP simultaneously, and the newly-generated LEG of indication SSP is set to EDP_R.Wherein: in RRBE message, include the BCSM event type and be that O_ routing failure, O_ reply, O_ no response, O_ Called Busy;

Step 206:SSP makes a call by the LS of IAM message to the called subscriber;

Step 207: the LS of user B sends ACM (Address Complete Message) message to SSP, thereby SSP has determined the speech channel that the LS of user B is connected with the LS of user A via SSP with call leg B; Wherein: the speech channel that the LS of the user B that is set up in this step is connected with the LS of user A via SSP is the speech channel shown in that dotted line that is in the below in two dotted lines among Fig. 1, and this speech channel is the speech channel that realizes that user A and user B converse;

After step 208:SSP receives ACM message, send BCSM event report (ERB) message to SCP, the state of notice SCP user B is normal; Wherein: in ERB message, including the BCSM event type is that O_ attempts;

Step 209:SCP sends to SSP and sets up interim connection message (ETC), and indication SSP is initiated to the speech channel of ip intelligent peripherals; Wherein: in ETC message, include Assisting SSP/IP (Service Switching Point or ip intelligent peripherals) routing address and SCPID (service control point sign);

Step 210:SSP is initiated to the calling of ip intelligent peripherals according to after receiving the ETC that SCP issues by IAM message;

Step 211: ip intelligent peripherals sends ACM message to SSP;

After step 212:SSP receives ACM message, send ACM message, thereby SSP sets up and connects the speech channel that ip intelligent peripherals is connected with the LS of user A via SSP with call leg A to the LS of user A; Wherein: the speech channel that the ip intelligent peripherals of being set up in this step is connected with the LS of user A via SSP is the speech channel shown in that dotted line that is in the top in two dotted lines among Fig. 1, and this speech channel is used for the coloring ring back tone playing sound;

Step 213: ip intelligent peripherals sends Assistant Request Instruction message (ARI) to SCP, and notice SCP set up with being connected of ip intelligent peripherals;

After step 214～step 215:SCP received ERB message, transmission was connected to message related to resources (CTR) and broadcasts notification message (PA) to ip intelligent peripherals, and the indication ip intelligent peripherals is put the CRBT sound to the calling subscriber; Calling subscriber's coloring ring back tone playing sound is given in the speech channel that ip intelligent peripherals uses step 212 to set up, and at this moment, the calling subscriber hears ring-back tone, and ring-back tone is the CRBT sound, wherein, in PA message, comprise: basic messae ID (basic messae sign), the i.e. numbering of the CRBT sound ordered of called subscriber;

Step 216: user B off-hook is replied, and the speech channel that the LS of user B sets up by step 207 sends ANM (response message) to SSP;

After step 217:SSP receives ANM, send ERB message to SCP, report SCP user B replys, and asks next step indication, and wherein: in RRBE message, including the BCSM event type is that O_ replys;

Step 218～step 219:SCP sends to SSP and cuts off forward connection message (DFC), indication SSP removes the speech channel with ip intelligent peripherals, after SSP receives DFC, sends release message (REL) to ip intelligent peripherals, the speech channel of release and ip intelligent peripherals, ip intelligent peripherals discharges own resource simultaneously;

Step 220:SCP sends to SSP and merges call leg message (MERG_CS), and indication SSP merges call leg A and call leg B;

After step 221:SSP merges the call leg success, to SCP return MERG_CS (merging call leg) operation results messages (RR, ReturnResult), the only surplus call leg B of SSP this moment;

Step 222:SCP sends RRBE message to SSP, and indication SSP called subscriber is set to EDP_R, and wherein: in RRBE message, including the BCSM event type is that O_ discharges (release of making a start);

Step 223:SCP indicates SSP to allow calling subscriber and called subscriber converse to the continuation message (CWA) that SSP sends the band parameter;

After step 224:SSP receives CWA message, send ANM for the LS at user A place, the speech channel that SSP is connected with the LS of user A via SSP with the LS of call leg B connecting subscribers participating B; User A utilizes among Fig. 1 speech channel and the user B shown in that dotted line that is in the below in two dotted lines to converse.

In the above-described embodiments, have only idle as user B and situation that two above-mentioned speech channels are all connected under, user A just can hear the CRBT sound.If user B is busy or user B by ACM message and SSP connection, then SSP is with dismantling call and discharge ip intelligent peripherals, its signaling process specifically comprises referring to Fig. 3:

Step 301～306: identical with step 201～206 implications shown in Figure 2;

Step 307～308: can't be switched on because user B is busy, therefore, the LS of user B sends REL message to SSP, and SSP removes and being connected of the LS of user B, and SSP is to the LS of user B transmission RLC message (release message) then;

Step 309: SSP sends ERB message to SCP simultaneously, and report SCP user B state is busy, asks next step indication, and wherein: in ERB message, including the BCSM event type is that O_ is busy;

After step 310:SCP receives ERB, send call release message (RC) to SSP, indication SSP discharges own resource, and SCP discharges all resources at this moment;

After step 311:SSP receives RC message, send REL message for the LS at user A place,, discharge the resource of oneself simultaneously with dismantling call.

If can not connect because the ip intelligent peripherals fault causes among Fig. 1 the speech channel shown in that dotted line that is in the top in two dotted lines, the speech channel that just is used for the coloring ring back tone playing sound is obstructed, the present invention plays common ring-back tone can for user B, what assurance continued normally carries out, its signaling process is participated in Fig. 4, specifically comprises:

Step 401～410: identical with step 201～210 implications shown in Figure 2;

Step 411～412: because the ip intelligent peripherals fault can't connect, ip intelligent peripherals sends REL message to SSP, and SSP receives the speech channel of removing after the REL message with ip intelligent peripherals, and sends RLC message to ip intelligent peripherals;

Step 413～414:SSP sends ACM message for the LS at user A place, and plays common ring-back tone for user A, sends TC_U_ERROR indication ETC operation failure to SCP simultaneously, waits for the further indication of SCP;

Step 415:SCP sends to SSP and merges call leg message (MERG_CS);

After step 416:SSP merges the call leg success, return the results messages (RR) of MERG_CS operation to SCP;

Step 417:SCP sends RRBE message to SSP, and indication SSP called subscriber is set to EDP_R, and wherein: in RRBE message, including the BCSM event type is that O_ discharges;

Step 418:SCP indicates the needs decision follow-up operation of SSP according to basic call to the continuation message (CWA) that SSP sends the band parameter;

Step 419: user B off-hook is replied, and the speech channel that the LS of user B sets up by step 407 (being step 207) sends ANM to SSP;

Step 420:SSP sends ANM for the LS at user A place, the speech channel that the LS of connecting subscribers participating B is connected with the LS of user A via SSP, and user A utilizes among Fig. 1 speech channel and the user B shown in that dotted line below being in two dotted lines to converse.

More than disclosed be specific embodiments of the invention only, but the present invention is not limited thereto, any those skilled in the art can think variation all should drop in protection scope of the present invention.

Claims

1, a kind of method that realizes Ring Back Tone service is characterized in that may further comprise the steps:

(6) SCP indication SSP merges call leg A and call leg B, and connects the speech channel between calling subscriber and the called subscriber, and calling subscriber and called subscriber utilize this speech channel to converse.

2, the method for realization Ring Back Tone service as claimed in claim 1 is characterized in that, the described SSP of step (1) comprises to the request message that SCP sends: start DP message, comprise the call leg information of generation in the described startup DP message.

3, the method for realization Ring Back Tone service as claimed in claim 1 is characterized in that, the message that the new call leg B of the described SCP indication of step (2) SSP generation comprises has: start call attempt message.

4, the method for realization Ring Back Tone service as claimed in claim 1, it is characterized in that the described SCP of step (3) indication SSP sets up and connects the message that an ip intelligent peripherals passes through the speech channel that SSP is connected with the calling subscriber and comprises with call leg A: set up interim connection message.

5, the method for realization Ring Back Tone service as claimed in claim 1 is characterized in that, the described SCP indication of step (4) ip intelligent peripherals comprises for the message of calling subscriber's coloring ring back tone playing sound: be connected to message related to resources and broadcast notification message.

6, the method for realization Ring Back Tone service as claimed in claim 1 is characterized in that, step (5) further comprises: the end office switch at called subscriber place sends response message to SSP, after SSP receives this message, sends BCSM event report message to SCP.

7, the method for realization Ring Back Tone service as claimed in claim 1 is characterized in that, step (5) further comprises: after SCP receives BCSM event report message, send cut-out forward connection message to SSP, indication SSP dismounting is connected with ip intelligent peripherals; SSP sends release message to ip intelligent peripherals after receiving message, the speech channel of release and ip intelligent peripherals, and ip intelligent peripherals discharges own resource simultaneously.

8, the method for realization Ring Back Tone service as claimed in claim 1 is characterized in that, the described SCP indication of step (6) SSP comprises call leg A and call leg B merging: SCP sends after the merging call leg message to SSP, sends the continuation message of band parameter to SSP.

9, the method for realization Ring Back Tone service as claimed in claim 1 is characterized in that, step (6) further comprises: SSP merges call leg, and sends response message for the end office switch at calling subscriber place, makes the calling and called user enter talking state.