CN100456775C - Method for realizing colour rebelling service - Google Patents
Method for realizing colour rebelling service Download PDFInfo
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- CN100456775C CN100456775C CNB031574351A CN03157435A CN100456775C CN 100456775 C CN100456775 C CN 100456775C CN B031574351 A CNB031574351 A CN B031574351A CN 03157435 A CN03157435 A CN 03157435A CN 100456775 C CN100456775 C CN 100456775C
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Abstract
The present invention discloses a color ring back tone service realizing method. The present invention comprises steps that in a step A, a calling user initiates a call to a service switching point (SSP), the SSP triggers an intelligent service according to a mark symbol for a color ring back tone service in the call and reports to a service control point (SCP), the SCP finds the number of a color ring back tone, and the number of a color ring back tone is issued to the SSP; in a step B, the SSP initiates calls respectively to a called user and a color ring back tone center according to the obtained number of a color ring back tone; in a step C, a speech path for connecting the called user to the calling user through the SSP is determined under the control of the SSP, and a speech path for connecting the color ring back tone center to the calling user through the SSP is established and switched on under the control of the SSP; in a step D, the color ring back tone center plays color ring back tones for the calling user through the speech path between the color ring back tone center and the calling user; in a step E, the called user is off hook, the speech path between the calling user and the called user is switched on, the calling user talks with the called user through the speech path, and meanwhile, the SSP removes the connection with the color ring back tone center and releases the resources of the color ring back tone center.
Description
Technical field
The present invention relates to the voice communication technical field, relate in particular to a kind of method that in voice communication, realizes Coloring Ring Back Tone.
Background technology
Current, along with the continuous development of telecommunication technology, people also improve day by day for the requirement of telecommunications service, and the telecommunications service of many personalizations are emerged in large numbers thus, and Ring Back Tone service is exactly one of these telecommunications personalized services.Ring Back Tone service also is Coloring Ring Back Tone, registered should business the user as the called subscriber time, can replace the common ring-back tone that sent to the calling subscriber originally with one section voice of prior customization, thereby satisfy the needs of user individual.Adopt this business, people can no longer only hear and be similar to the ring-back tone of the dullness of " pouting---toots---" when calling, but can the uppick called subscriber or operator customized as the Comfort Noise Generation (CNG) of-section music, advertisement or message.
Ring Back Tone service is generally realized with the mode of intelligent network, registering this professional user leaves business datum in the IN DataBase in, and adopt one independently voice platform as the equipment of coloring ring back tone playing, the equipment of this coloring ring back tone playing is collectively referred to as the CRBT center, can use high-grade intelligent peripheral hardware (AIP) or any voice platform that other supports Ring Back Tone service as the CRBT center.
Introduce the method that realizes Ring Back Tone service in the prior art below.
Referring to Fig. 1, in the prior art, cooperate the realization Ring Back Tone service by the Service Control Point in the intelligent network, Service Switching Point and AIP, wherein, preestablished the Ring Back Tone service marker character on the SSP.Having registered Ring Back Tone service with user B is example, and referring to Fig. 2, when user B made a call, the prior art realized that Ring Back Tone service specifically may further comprise the steps at user A:
Step 201: user A dialing numbers, then, the end office (EO) of user A (LS) sends initial address message (IAM) to SSP, thereby makes a call; Wherein, be included in SSP in the number that user A is dialed at least and go up predefined Ring Back Tone service marker character, also comprise this Ring Back Tone service marker character in the IAM message at least;
Step 202:SSP receives IAM message, according to Ring Back Tone service marker character trigger intelligent business wherein, then, SSP sends primary data to SCP and handles (Initial DP) message, make SSP after trigger intelligent business, report SCP, after SCP receives the message that SSP reports, in database, find the CRBT number of user B registration; Wherein, the CRBT number adds the CRBT speech coding by the routing number to the CRBT center and forms;
Step 203:SCP send to connect (CONNECT) message to SSP, to the SSP connection that to issue with the resulting CRBT number of step 202 be destination address;
Step 204:SSP arrives AIP by IAM message with call proceeding according to the destination address that obtains;
Step 205:AIP is by IAM message, connects with the LS at user B place;
Step 209: when the LS of user B play common ring-back tone to the LS of user A, AIP masked the common ring-back tone that LS play of user B, and play the CRBT that called subscriber B is customized to the LS of user A;
Step 210: user B replys, and the LS of user B sends answer charging (ANC) message to AIP;
When adopting the prior art to realize Coloring Ring Back Tone, need and will go here and there in speech channel as a tandem exchange as the CRBT center of AIP, therefore, the prior art has following shortcoming:
1, the resource utilization at CRBT center is very low: after the called subscriber answer, the CRBT center is coloring ring back tone playing more just, but because the CRBT center is in the position of tandem, therefore could discharge when its resource will arrive whole call clearing, thereby cause the traffic resource at CRBT center and the serious waste of playback resource;
2, having relatively high expectations to the CRBT center: because in the prior art, coloring ring back tone playing is not only wanted at the CRBT center, but also will realize the function of transit call, therefore, the CRBT center need possess coloring ring back tone playing and realize the dual-use function of tandem, thereby has increased the requirement to the CRBT center;
3, disaster tolerance ability: because CRBT center string is in speech channel, in case the CRBT center break down, then not only can't coloring ring back tone playing, and ordinary call all can't normally continue.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that realizes Coloring Ring Back Tone, this method can realize Coloring Ring Back Tone, and, for the speech channel that the realization Coloring Ring Back Tone is set up is no longer made a circulation through the CRBT center, thereby improve the resource utilization at CRBT center, reduce requirement the CRBT center, under the situation about breaking down at the CRBT center, also can realize continuing normally.
The present invention is a kind of method that realizes Coloring Ring Back Tone, it is characterized in that this method may further comprise the steps at least:
Steps A: the calling subscriber makes a call to Service Switching Point, Service Switching Point is according to Ring Back Tone service marker character trigger intelligent business and reporting service control point in calling out, the CRBT number that service control point finds the called subscriber to register in advance issues this CRBT number to Service Switching Point;
Step B: Service Switching Point makes a call to called subscriber and CRBT center respectively according to the CRBT number that obtains; And judge whether described called subscriber is in can on-state, if, execution in step C then;
Step C: by the operation exchange point control, determine one be in can on-state the speech channel that is connected with the calling subscriber through Service Switching Point of called subscriber, with by the operation exchange point control, set up and connect the speech channel that a CRBT center that is in normal operating conditions is connected with the calling subscriber through Service Switching Point;
Step D: the CRBT center is according to the calling among the step B, the Comfort Noise Generation (CNG) that finds the called subscriber to customize in advance, and CRBT center of being connected by step C and the speech channel between the calling subscriber are play this Comfort Noise Generation (CNG) to the calling subscriber;
Step e: called subscriber's off-hook is replied, connect the speech channel between determined calling subscriber of step C and the called subscriber, calling subscriber and called subscriber utilize this speech channel to converse, and simultaneously, Service Switching Point is removed and being connected and discharging the CRBT center resources of CRBT center.
Wherein, the described Service Switching Point of step B respectively to called subscriber and CRBT center make a call into:
Service Switching Point sends initial address message respectively to called subscriber's end office (EO) and CRBT center.
Wherein, determine described in the step C that the speech channel that the called subscriber is connected with the calling subscriber comprises:
Called subscriber's end office (EO) sends Address Complete Message to Service Switching Point, after Service Switching Point is received this message, to end office's transmission Address Complete Message of calling subscriber, to determine the speech channel between described calling subscriber and the called subscriber.
Wherein, setting up and connect a CRBT center that is in normal operating conditions described in the step C comprises through the speech channel that Service Switching Point is connected with the calling subscriber:
The mind-set Service Switching Point sends Address Complete Message in the CRBT, after Service Switching Point is received this message, to end office's transmission Address Complete Message of calling subscriber, to set up and to have connected the speech channel between described CRBT center and the calling subscriber.
Wherein, if judging among the described step B that described called subscriber is in can't on-state, then no longer carry out described step C～step e, and further carry out following steps:
Called subscriber's end office (EO) sends release message to Service Switching Point, after Service Switching Point is received this message, discharge respectively and calling subscriber's end office (EO) and the speech channel between the CRBT center, and the CRBT center discharges own resource.
Wherein, further comprise among the step C: judge whether described CRBT center sends release message to Service Switching Point, if, the then no longer foundation described in the execution in step C and connect the step of the speech channel that a CRBT center that is in normal operating conditions is connected with the calling subscriber through Service Switching Point, and no longer carry out described step D～step e, and further carry out following steps:
Service Switching Point discharges the speech channel that is connected with the CRBT center, and the CRBT center discharges own resource, Service Switching Point is play common ring-back tone to the calling subscriber, during called subscriber answer, calling subscriber and called subscriber converse by the speech channel between described calling subscriber of step C and the called subscriber.
Wherein, in step D, further comprise: in the process of playing Comfort Noise Generation (CNG), judge whether the CRBT center sends release message to Service Switching Point, if then no longer carry out described step e, and further carry out following steps:
Service Switching Point discharges the speech channel that is connected with the CRBT center, and the CRBT center discharges its other resources, Service Switching Point is play common ring-back tone to the calling subscriber, during called subscriber answer, calling subscriber and called subscriber converse by the speech channel between described calling subscriber of step C and the called subscriber.
Wherein, the speech channel of connecting between calling subscriber and the called subscriber described in the step e comprises:
After called subscriber's off-hook is replied, called subscriber's end office (EO) sends answer charging message to Service Switching Point, Service Switching Point is received this message, to end office's transmission answer charging message of calling subscriber, to connect the speech channel between calling subscriber end office (EO) and the called subscriber end office (EO).
Wherein, Service Switching Point described in the step e is removed to connect and discharge resource and is comprised:
Service Switching Point sends release message to the CRBT center, and the dismounting Service Switching Point is connected with the CRBT center, and the CRBT center discharges its other resources.
Wherein, adopt the high-grade intelligent peripheral hardware as described CRBT center.
As seen, the present invention has following beneficial effect:
1, resource utilization aspect: the speech channel after the conversation is no longer circuitous by the CRBT center, holding time to the CRBT center resources is the time that ring-back tone is listened in caller, all resources at CRBT center are released immediately behind the called party answer, thereby have improved the resource utilization at CRBT center;
2, to the aspect that requires at CRBT center: player function only need be finished as an ip intelligent peripherals in the CRBT center, and need not to finish the tandem function again;
3, disaster tolerance ability aspect: the fault at CRBT center or unusually can not influence calling and normally continue.
Description of drawings
Fig. 1 is a networking schematic diagram of realizing Ring Back Tone service in the prior art.
Fig. 2 is a flow chart of realizing Ring Back Tone service in the prior art.
Fig. 3 realizes the networking schematic diagram of Ring Back Tone service for the present invention.
Fig. 4 realizes the flow chart of Ring Back Tone service for the present invention.
Fig. 5 is in one embodiment of the invention, the flow chart of dismantling call when the called subscriber can't connect.
Fig. 6 is in one embodiment of the invention, realizes the flow chart of ordinary call when break down in the CRBT center.
Fig. 7 is in one embodiment of the invention, during the abnormal call clearing of CRBT center, realizes the flow chart of ordinary call in the coloring ring back tone playing process.
Embodiment
The present invention is a kind of method that realizes Ring Back Tone service, this method utilizes calling subscriber's LS and the speech channel between the CRBT center to play Comfort Noise Generation (CNG), utilize between calling subscriber's LS and called subscriber's the LS and converse through the speech channel of SSP, in the process that realizes Ring Back Tone service, the CRBT center only needs as the equipment of playing colored the tinkle of bells, and need not to realize the tandem function.
Describe the present invention below in conjunction with accompanying drawing.In each embodiment of the following stated, all with AIP as the CRBT center, user A is as the calling subscriber, user B is as the called subscriber, and user B is for having registered the user of bell sound business in advance, preestablished the Ring Back Tone service marker character of trigger intelligent business on the SSP, in case comprised this Ring Back Tone service marker character in the call number of caller, then SSP triggers corresponding IN service; Wherein, in other embodiments of the invention, also can adopt other voice platform of supporting Ring Back Tone service as the CRBT center.
Referring to Fig. 3, the present invention adopts SCP, the SSP in the intelligent network and is used as the AIP cooperation realization Coloring Ring Back Tone at CRBT center, path when the chain-dotted line among the figure is represented coloring ring back tone playing, dotted line among the figure is represented the speech channel of calling and called conversation, in conjunction with Fig. 4, having registered Ring Back Tone service with called subscriber B is example, and when user B made a call, the present invention realized that Coloring Ring Back Tone specifically needs following steps at user A:
Step 401: user A dialing numbers, the LS of user A sends IAM message to SSP, thereby makes a call; Wherein, include the Ring Back Tone service marker character that sets in advance on the SSP in the number that user A is dialed, the LS of user A comprises called number and Ring Back Tone service marker character in the IAM message that SSP sent;
Step 402:SSP triggers and the corresponding IN service of Ring Back Tone service according to the Ring Back Tone service marker character in the IAM message, then, SSP sends initial DP message to SCP, so that report SCP after the SSP trigger intelligent business, after SCP receives the message that SSP reports, utilize the number of the user B in the reporting message in database, to find the CRBT number of user B registration; Wherein, the CRBT number in the embodiment of the invention adds the CRBT speech coding by the routing number to the CRBT center and forms;
Step 403:SCP sends CONNECT message to SSP, to the SSP connection that to issue with the resulting CRBT number of step 402 be destination address;
Step 404～step 405:SSP initiates two callings by IAM message to the LS of AIP and user B after obtaining connection indication that SCP issues;
The LS of step 406～step 408:AIP and user B sends ACM message to SSP respectively, after SSP receives this ACM message, LS to user A sends ACM message, also connect the speech channel that AIP is connected with the LS of user A via SSP thereby set up, and the speech channel that is connected with the LS of user A via SSP of the LS of definite user B; Wherein, the speech channel of AIP that is set up in this step and user A is the speech channel shown in the chain-dotted line among Fig. 3, this speech channel is used to play Comfort Noise Generation (CNG), speech channel between the LS of the determined user B of this step and the LS of user A is speech channel shown in dotted lines in Figure 3, and this speech channel is the speech channel that realizes that user A and user B converse;
Step 409:AIP obtains corresponding Comfort Noise Generation (CNG) according to being searched by the CRBT number information in the AIM message of being received in the step 404, utilize in step 408 speech channel between the LS of the AIP that is communicated with and user A then, play this Comfort Noise Generation (CNG) to the LS of user A;
Step 410: user B off-hook is replied, and the LS of user B sends ANC message by the speech channel shown in Fig. 3 dotted line to SSP;
Step 411～step 412:SSP receives the ANC message that LS sent of user B, and sends ANC message to the LS of user A, connects the speech channel between the LS of the LS of user B shown in dotted lines in Figure 3 and user A; Simultaneously, SSP send to discharge (REL) message to AIP, removes being connected between SSP and the AIP, discharges the AIP resource;
Step 413: user A utilizes speech channel shown in dotted lines in Figure 3 and user B to converse.
In the above-described embodiments, have only under situation idle as called subscriber's user B and that connect by ACM message with SSP, SSP just can set up and connect the speech channel between AIP and the user A, to allow user A can hear the Comfort Noise Generation (CNG) that AIP sends, if user B is busy or user B does not connect by ACM message and SSP, then SSP is with dismantling call and discharge AIP, and its signaling process specifically comprises referring to Fig. 5:
Step 501～step 506: referring to Fig. 4, step 501～step 505 is identical with step 401～step 406 shown in Figure 4 respectively;
Step 507～step 508: can't be switched on because user B is busy, therefore, the LS of user B sends REL message to SSP, and SSP discharges and being connected of the LS of user B, and then, SSP sends release to the LS of user B and finishes (RLC) message;
Step 509～step 510:SSP sends REL message to the LS of user A, with dismantling call, sends REL message to AIP simultaneously, to discharge the resource of AIP.
The present invention is in particular in except realizing the Ring Back Tone service also having good disaster tolerance ability:
(1) break down can't connect the time when the CRBT center, send common ring-back tone by SSP control to caller, what guarantee to continue normally carries out, and its signaling process specifically comprises referring to Fig. 6:
Step 601～step 605: referring to Fig. 4, step 601～step 605 is identical with step 401～step 405 shown in Figure 4 respectively;
Step 606～step 607: owing to break down and can't connect as the AIP at CRBT center, therefore, AIP sends REL message to SSP, to show that AIP breaks down, SSP discharges the speech channel with AIP, and AIP discharges its other resources, after SSP finishes release work, send RLC message to AIP;
Step 608～step 609: the LS of user B sends ACM message to SSP, and then, SSP sends ACM message to the LS of user A, thereby sets up the speech channel between user A shown in dotted lines in Figure 3 and the user B;
Step 610:SSP plays common ring-back tone to the LS of user A;
Step 611～step 612: user B off-hook is replied, and the LS of user B sends ANC message to SSP, and SSP receives this message, sends ANC message to the LS of user A, connects the speech channel that above-mentioned steps 608～step 609 is set up;
Step 613: user A and user B converse by the speech channel of connecting;
(2) in the process of AIP coloring ring back tone playing sound, if AIP will abnormal call clearing, then still can continue play common ring-back tone by SSP control to caller, guarantee the carrying out of normally continuing, its signaling process specifically comprises referring to Fig. 7:
Step 701～step 709: referring to Fig. 4, step 701～step 709 is identical with step 401～step 409 shown in Figure 4;
Step 710～step 711:AIP sends REL message to SSP, will abnormal call clearing to show AIP, and SSP discharges the speech channel with AIP, and AIP discharges its other resources, after SSP finishes release work, to AIP transmission RLC message;
Step 712:SSP plays common ring-back tone to the LS of user A;
Step 713～step 714: user B off-hook is replied, and the LS of user B sends ANC message to SSP, after SSP receives this message, sends ANC message to the LS of user A, thereby connects the speech channel between user A shown in dotted lines in Figure 3 and the user B;
Step 715: adopt speech channel shown in dotted lines in Figure 3 to converse between user A and the user B.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of method that realizes Coloring Ring Back Tone is characterized in that this method may further comprise the steps at least:
Steps A: the calling subscriber makes a call to Service Switching Point, Service Switching Point is according to Ring Back Tone service marker character trigger intelligent business and reporting service control point in calling out, the CRBT number that service control point finds the called subscriber to register in advance issues this CRBT number to Service Switching Point;
Step B: Service Switching Point makes a call to called subscriber and CRBT center respectively according to the CRBT number that obtains; And judge whether described called subscriber is in can on-state, if, execution in step C then;
Step C: by the operation exchange point control, determine one be in can on-state the speech channel that is connected with the calling subscriber through Service Switching Point of called subscriber, with by the operation exchange point control, set up and connect the speech channel that a CRBT center that is in normal operating conditions is connected with the calling subscriber through Service Switching Point;
Step D: the CRBT center is according to the calling among the step B, the Comfort Noise Generation (CNG) that finds the called subscriber to customize in advance, and CRBT center of being connected by step C and the speech channel between the calling subscriber are play this Comfort Noise Generation (CNG) to the calling subscriber;
Step e: called subscriber's off-hook is replied, connect the speech channel between determined calling subscriber of step C and the called subscriber, calling subscriber and called subscriber utilize this speech channel to converse, and simultaneously, Service Switching Point is removed and being connected and discharging the CRBT center resources of CRBT center.
2, method according to claim 1 is characterized in that, the described Service Switching Point of step B respectively to called subscriber and CRBT center make a call into:
Service Switching Point sends initial address message respectively to called subscriber's end office (EO) and CRBT center.
3, method according to claim 1 is characterized in that, determines described in the step C that the speech channel that the called subscriber is connected with the calling subscriber comprises:
Called subscriber's end office (EO) sends Address Complete Message to Service Switching Point, after Service Switching Point is received this message, to end office's transmission Address Complete Message of calling subscriber, to determine the speech channel between described calling subscriber and the called subscriber.
4, method according to claim 1 is characterized in that, sets up and connects a CRBT center that is in normal operating conditions described in the step C and comprise through the speech channel that Service Switching Point is connected with the calling subscriber:
The mind-set Service Switching Point sends Address Complete Message in the CRBT, after Service Switching Point is received this message, to end office's transmission Address Complete Message of calling subscriber, to set up and to have connected the speech channel between described CRBT center and the calling subscriber.
5, method according to claim 1 is characterized in that, if judging among the described step B that described called subscriber is in can't on-state, then no longer carries out described step C～step e, and further carries out following steps:
Called subscriber's end office (EO) sends release message to Service Switching Point, after Service Switching Point is received this message, discharge respectively and calling subscriber's end office (EO) and the speech channel between the CRBT center, and the CRBT center discharges own resource.
6, method according to claim 1, it is characterized in that, further comprise among the step C: judge whether described CRBT center sends release message to Service Switching Point, if, the then no longer foundation described in the execution in step C and connect the step of the speech channel that a CRBT center that is in normal operating conditions is connected with the calling subscriber through Service Switching Point, and no longer carry out described step D～step e, and further carry out following steps:
Service Switching Point discharges the speech channel that is connected with the CRBT center, and the CRBT center discharges own resource, Service Switching Point is play common ring-back tone to the calling subscriber, during called subscriber answer, calling subscriber and called subscriber converse by the speech channel between described calling subscriber of step C and the called subscriber.
7, method according to claim 1 is characterized in that, further comprises in step D: in the process of playing Comfort Noise Generation (CNG), judge whether the CRBT center sends release message to Service Switching Point, if then no longer carry out described step e, and further carry out following steps:
Service Switching Point discharges the speech channel that is connected with the CRBT center, and the CRBT center discharges its other resources, Service Switching Point is play common ring-back tone to the calling subscriber, during called subscriber answer, calling subscriber and called subscriber converse by the speech channel between described calling subscriber of step C and the called subscriber.
8, method according to claim 1 is characterized in that, the speech channel of connecting between calling subscriber and the called subscriber described in the step e comprises:
After called subscriber's off-hook is replied, called subscriber's end office (EO) sends answer charging message to Service Switching Point, Service Switching Point is received this message, to end office's transmission answer charging message of calling subscriber, to connect the speech channel between calling subscriber end office (EO) and the called subscriber end office (EO).
9, method according to claim 1 is characterized in that, Service Switching Point described in the step e is removed to connect and discharge resource and comprised:
Service Switching Point sends release message to the CRBT center, and the dismounting Service Switching Point is connected with the CRBT center, and the CRBT center discharges its other resources.
10, method according to claim 1 is characterized in that adopting the high-grade intelligent peripheral hardware as described CRBT center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031574351A CN100456775C (en) | 2003-09-19 | 2003-09-19 | Method for realizing colour rebelling service |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB031574351A CN100456775C (en) | 2003-09-19 | 2003-09-19 | Method for realizing colour rebelling service |
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| CN1599387A CN1599387A (en) | 2005-03-23 |
| CN100456775C true CN100456775C (en) | 2009-01-28 |
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| CNB031574351A Expired - Fee Related CN100456775C (en) | 2003-09-19 | 2003-09-19 | Method for realizing colour rebelling service |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848875B (en) * | 2005-04-04 | 2010-04-28 | 华为技术有限公司 | Method for realizing ringback tone business |
| CN1956558B (en) * | 2005-10-27 | 2010-04-14 | 中兴通讯股份有限公司 | System and method for providing opera browser to integration of call center service of intelligent network |
| CN1859142A (en) * | 2006-03-08 | 2006-11-08 | 华为技术有限公司 | Broadcasting method and system |
| CN1984177B (en) * | 2006-04-14 | 2011-04-06 | 华为技术有限公司 | System and method for realizing color bell service |
| CN101132442B (en) * | 2006-08-21 | 2010-06-09 | 中国电信股份有限公司 | Color ring operation method |
| CN101132348B (en) * | 2006-08-22 | 2011-05-25 | 中兴通讯股份有限公司 | Method for implementing IMS distinguished ring business by SIP signaling expansion |
| CN102131160A (en) * | 2011-03-18 | 2011-07-20 | 中兴通讯股份有限公司 | Method and system for avoiding false playback in failure of coloring ring back tone (CRBT) interconnection of gateway exchange |
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| CN1294811A (en) * | 1999-02-18 | 2001-05-09 | 金江石 | Advertising method by using ring-back tone |
| CN1335015A (en) * | 1999-07-19 | 2002-02-06 | 芮弗里公司 | Method and device for generating voice/text/image commercial information ringback tone during communication wait |
| WO2003071815A1 (en) * | 2002-02-25 | 2003-08-28 | Sk Telecom Co., Ltd | Method and apparatus for providing subscriber-based ringback tone |
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2003
- 2003-09-19 CN CNB031574351A patent/CN100456775C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1294811A (en) * | 1999-02-18 | 2001-05-09 | 金江石 | Advertising method by using ring-back tone |
| CN1335015A (en) * | 1999-07-19 | 2002-02-06 | 芮弗里公司 | Method and device for generating voice/text/image commercial information ringback tone during communication wait |
| WO2003071815A1 (en) * | 2002-02-25 | 2003-08-28 | Sk Telecom Co., Ltd | Method and apparatus for providing subscriber-based ringback tone |
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| CN1599387A (en) | 2005-03-23 |
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