CN102137344B - CRBT (color ring back tone) realizing method, CRBT platform and CRBT system - Google Patents
CRBT (color ring back tone) realizing method, CRBT platform and CRBT system Download PDFInfo
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- CN102137344B CN102137344B CN201010280939.XA CN201010280939A CN102137344B CN 102137344 B CN102137344 B CN 102137344B CN 201010280939 A CN201010280939 A CN 201010280939A CN 102137344 B CN102137344 B CN 102137344B
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Abstract
The invention discloses a CRBT (color ring back tone) realizing method which comprises the steps of receiving a CRBT playing request, wherein the CRBT playing request contains originating point code OPC fields; finding corresponding CRBT identification in a CRBT comparison table according to signaling point codes contained in the OPC fields, and reading corresponding CRBT according to the CRBT identification; and playing the CRBT. The invention also discloses a CRBT platform and a CRBT system. In the embodiment of the invention, the corresponding CRBT is played according to the signaling point codes contained in the CRBT playing request, so that CRBT selecting mode can be increased; and the current information and conversion equipment do not need to be modified, and a relevant processing module based on signaling point codes to play the CRBT is additionally arranged only in the CRBT platform. Therefore, the embodiment of the invention has low cost and is easy to promote.
Description
Technical field
The present invention relates to Ring Back Tone Technology, relate in particular to a kind of method, color ring platform and color ring systems of realizing Ring Back Tone service.
Background technology
Ring Back Tone service claims again personalized ring back tone business, music, the song of this business user oneself definition replaces traditional " beep; beep " ring-back tone, makes calling subscriber can hear colourful bell sound in the process of waiting for called subscriber's off-hook, with this, comes user to experience.
At first, Ring Back Tone service is positioned as a kind of called service (referred to as called RBT service), be calling subscriber while having called out the called subscriber of Ring Back Tone service customized, by the customized CRBT of uppick called subscriber, but called subscriber self is cannot its customized CRBT of uppick.Be understood that, called RBT service can only be experienced by the raising user that user's user experiences to improve the customized user of CRBT that makes a call.Along with further developing of Ring Back Tone Technology, there is a kind of calling RBT service, the calling subscriber of customized Ring Back Tone service, when calling out called subscriber, is own customized CRBT by this calling subscriber of uppick.As can be seen here, calling RBT service can directly improve user's experience of the customized user of CRBT.
Although can improve user, experience, existing Ring Back Tone service can only select corresponding CRBT to play according to calling number or called number, so CRBT selection mode is comparatively single.
Summary of the invention
In view of this, be necessary to provide a kind of method that realizes Ring Back Tone service in fact, for solving the single problem of existing CRBT selection mode.
Meanwhile, provide a kind of color ring platform, for solving the single problem of existing CRBT selection mode.
Meanwhile, provide a kind of color ring systems, for solving the single problem of existing CRBT selection mode.
One embodiment of the present of invention provide a kind of method that realizes Ring Back Tone service, comprising:
Receive polyphonic ringtone playing request, in described polyphonic ringtone playing request, comprise OPC Origination Point Code OPC field;
According to the signaling point code comprising in described OPC field, in the CRBT table of comparisons, search corresponding CRBT sign, and read corresponding CRBT according to described CRBT sign;
Play described CRBT.
One embodiment of the present of invention provide a kind of color ring platform, comprising:
Receiver module, for receiving polyphonic ringtone playing request, comprises OPC field in described polyphonic ringtone playing request;
Search module, according to the signaling point code comprising in described OPC field, in the CRBT table of comparisons, search corresponding CRBT sign, and read corresponding CRBT according to described CRBT sign;
Playing module, for playing described CRBT.
One embodiment of the present of invention provide a kind of color ring systems, comprise color ring platform, and this color ring platform can communicate with at least one switching equipment:
Described switching equipment is used for sending polyphonic ringtone playing request, in described polyphonic ringtone playing request, comprises OPC field, the signaling point code that comprises described switching equipment in described OPC field;
Described color ring platform is used for receiving described polyphonic ringtone playing request, according to the signaling point code of the described switching equipment comprising in described OPC field, in the CRBT table of comparisons, search corresponding CRBT sign, according to described CRBT sign, read corresponding CRBT, and play described CRBT to described switching equipment.
The embodiment of the present invention is play corresponding CRBT according to the signaling point code comprising in the OPC Origination Point Code field of polyphonic ringtone playing request, therefore can increase CRBT selection mode, and without existing message and existing switching equipment are transformed, and only need in color ring platform, set up the related process module of carrying out coloring ring back tone playing based on signaling point code.Therefore, it is low that the embodiment of the present invention realizes cost, is easy to promote.
Accompanying drawing explanation
Fig. 1 is the flow chart according to the method that realizes Ring Back Tone service of one embodiment of the invention;
Fig. 2 A is the logical construction block diagram of ISUP initial address message;
Fig. 2 B is the logical construction block diagram of TUP initial address message;
Fig. 3 is the logical construction block diagram according to the color ring platform of one embodiment of the invention;
Fig. 4 is the logical construction block diagram according to the color ring systems of one embodiment of the invention;
Fig. 5 is the logic diagram according to the network architecture of one embodiment of the invention;
Fig. 6 is the signaling diagram according to the call establishment of one embodiment of the invention;
Fig. 7 is the logic diagram according to the network architecture of one embodiment of the invention;
Fig. 8 is the signaling diagram according to the call establishment of one embodiment of the invention;
Fig. 9 is the logic diagram according to the network architecture of one embodiment of the invention;
Figure 10 is the logic diagram according to the network architecture of one embodiment of the invention.
Embodiment
Fig. 1 is the flow chart according to the method that realizes Ring Back Tone service 100 of one embodiment of the invention.As shown in Figure 1, step 102, receives polyphonic ringtone playing request, comprises OPC Origination Point Code (OPC, Originating Point Code) field in described polyphonic ringtone playing request;
Specifically, above-mentioned polyphonic ringtone playing request can be but be not limited to initial address message (Initial Address Message, IAM) or with the initial address message (Initial Address Message with Additional Information, IAI) of additional information.
The structure of ISUP (ISUP, Integrated Services Digital Network (ISDN) User Part) initial address message 200 as shown in Figure 2 A.ISUP initial address message 200 shown in Fig. 2 A comprises routing label, cic circuit identification code (Circuit Identification Code, CIC) field 208 and signaling information (Signaling Information, SI) field 210.Routing label further comprises Destination Point Code (Destination Point Code, DPC) field 202, OPC Origination Point Code field 204 and signaling link selection (Signaling Link Selection, SLS) field 206.
Similarly, the structure of TUP (Telephone User Part, Telephone User Part) initial address message 200 ' as shown in Figure 2 B.TUP initial address message 200 ' shown in Fig. 2 B comprises routing label and signaling information field 210 '.Routing label further comprises Destination Point Code field 202 ', OPC Origination Point Code field 204 ' and cic circuit identification code field 208 '.
Should note, those skilled in the art is understood that, above-mentioned polyphonic ringtone playing request is not limited only to IAM or IAI, also can use other applicable message that comprise OPC, the applicable message of other in ISUP, TUP and SCCP (Signaling Connection Control Part, SCCP) for example.
Specifically, step 102 specifically comprises, color ring platform receives the polyphonic ringtone playing request that switching equipment sends, described OPC field is included in the routing label of described polyphonic ringtone playing request, the signaling point code that the signaling point code comprising in the OPC field of described polyphonic ringtone playing request is described switching equipment, the service area of switching equipment described in the signaling point code unique identification of described switching equipment.Wherein, described switching equipment is caller MSC (mobile switching centre, Mobile Switching Center), called MS C or TMSC (tandem mobile switching centre, Tandem Mobile Switching Center); When described switching equipment is described TMSC, the service area of TMSC is service area (area) sum of a plurality of MSC of described TMSC institute tandem described in described signaling point code institute uniquely identified.
Step 104 is searched corresponding CRBT sign according to the signaling point code comprising in described OPC field in the CRBT table of comparisons, and reads corresponding CRBT according to described CRBT sign;
Therefore specifically, special color ring data storehouse can be set and store CRBT, according to described CRBT sign, read corresponding CRBT and further comprise according to described CRBT sign and from color ring data storehouse, read corresponding CRBT.CRBT corresponding to signaling point code be bulk input in advance, also can be in actual application Add one by one.Meanwhile, the corresponding relation between the CRBT sign of signaling point code and CRBT corresponding to this signaling point code is write to the CRBT table of comparisons.Therefore, method 100 also can comprise signaling point code and CRBT corresponding to described signaling point code that receives input, described CRBT is stored in described color ring data storehouse, and the corresponding relation between the CRBT sign of described signaling point code and described CRBT is write to the CRBT table of comparisons.
The above-mentioned CRBT table of comparisons can adopt such as but not limited to lower column format:
| Signaling point code | CRBT sign |
| 0000b5 | 001 |
| 0023d7 | 002 |
Table 1
It should be noted that the content of enumerating in above-mentioned table 1, only for for example, is not intended to limit scope of the present invention.
Due to signaling point code can be unique this signaling point code of sign under communication equipment (such as but not limited to switching equipment), so service area of this communication equipment of sign that this signaling point code also can be unique.So just can set up associated between the geographic area (service area) of signaling point code and certain limit.In this case, method 100 also can comprise, CRBT corresponding to signaling point code is arranged to the notice or the advertisement that are associated with described signaling point code institute uniquely identified service area, the common notification such as described notice can be such as but not limited to cut off the water, power failure, described advertisement can be such as but not limited to travel information advertisement etc.
Step 106, plays described CRBT.
Specifically, after the playback of notice tone playing equipment, can play described CRBT by the communication link of indicating in polyphonic ringtone playing request.The indicated communication link of cic circuit identification code for example, comprising in, can the CIC field by IAM is play described CRBT.
In addition, when the notice of CRBT corresponding to described signaling point code being arranged to be associated with described signaling point code institute uniquely identified service area or advertisement, play described CRBT and just can further comprise and play notice or the advertisement being associated with described signaling point code institute uniquely identified service area.
In specific implementation process, the method that realizes Ring Back Tone service 100 that the embodiment of the present invention provides can combine with other the scheme that realizes Ring Back Tone service, as supplementing other the scheme that realizes Ring Back Tone service.For example, other such as but not limited to according to the calling number comprising in polyphonic ringtone playing request, called number and come according to current slot, on the scheme basis of coloring ring back tone playing, to carry out the step of coloring ring back tone playing in increase method 100 according to the signaling point code comprising in the OPC field of polyphonic ringtone playing request.In implementation procedure, can preferentially according to the signaling point code comprising in the OPC field of polyphonic ringtone playing request, carry out coloring ring back tone playing, when not finding corresponding CRBT sign according to signaling point code, the method that realizes Ring Back Tone service according to other is again carried out coloring ring back tone playing, according to what comprise in polyphonic ringtone playing request, such as but not limited to calling number, called number, carry out coloring ring back tone playing, or carry out coloring ring back tone playing according to current slot.
For the method 100 that the embodiment of the present invention is provided combines with other schemes that realize Ring Back Tone service, can in step 106 and step 108, increase respectively extra processing operation.For example step 106 also can comprise, if do not find corresponding CRBT sign in the CRBT table of comparisons according to the signaling point code comprising in OPC field, can from the default table of comparisons, search corresponding CRBT sign according to the polyphonic ringtone playing strategy setting in advance, and read corresponding CRBT according to described CRBT sign.Step 108 also can comprise plays the CRBT finding according to the polyphonic ringtone playing strategy setting in advance.Just corresponding above-mentioned other schemes that realize Ring Back Tone service of the above-mentioned polyphonic ringtone playing strategy setting in advance wherein, such as this polyphonic ringtone playing strategy, can be to play corresponding CRBT according to information such as the calling number comprising in polyphonic ringtone playing request, called numbers, or play corresponding CRBT according to the information such as time period at current place.Above-mentioned calling number or called number can for example, obtain from polyphonic ringtone playing request (IAM or IAI).The above-mentioned default table of comparisons can arrange specially for the polyphonic ringtone playing strategy setting in advance, and also can merge with the above-mentioned CRBT table of comparisons.When arranging separately, the described default table of comparisons can adopt such as but not limited to lower column format:
| Calling number (or called number, time period) | CRBT sign |
| 12345678 | 0104 |
| 81234567 | 0166 |
Table 2
Wherein in the default table of comparisons, record the corresponding relation between calling number, called number or time period (relevant with the polyphonic ringtone playing strategy setting in advance) and CRBT sign.
Be understood that, when combining with other the scheme that realizes Ring Back Tone service according to the method that realizes Ring Back Tone service 100 that the embodiment of the present invention is provided mentioned above, the CRBT of calling subscriber's uppick is own selected CRBT by not being probably calling subscriber when the customized calling RBT service.In like manner, the CRBT of calling subscriber's uppick is not probably called subscriber's selected CRBT when customized called RBT service yet.Although this is because in calling procedure, polyphonic ringtone playing request is because the customized calling RBT service of calling subscriber or the customized called RBT service of called subscriber trigger, but color ring platform is when receiving polyphonic ringtone playing request, first corresponding CRBT sign will be searched according to the signaling point code comprising in polyphonic ringtone playing request OPC field, and when finding this CRBT sign, play this CRBT and identify corresponding CRBT.In other words, when existing in the situation of the CRBT that above-mentioned signaling point code is corresponding, color ring platform can't be according to the calling number in polyphonic ringtone playing request (in calling RBT service, color ring platform is play corresponding CRBT according to calling number conventionally), the number data of the calling both sides such as called number (in called RBT service, color ring platform is play corresponding CRBT according to called number conventionally) carrys out coloring ring back tone playing.Therefore, when other Ring Back Tone services are combined, for not affecting the use of other Ring Back Tone services, the method that realizes Ring Back Tone service that the embodiment of the present invention can be provided is applied to only issue emergency notice or only between given zone (for example golden week for tourism releasing advertisements).
It should be noted that the content of enumerating in above-mentioned table 2, only for for example, is not intended to limit scope of the present invention.In addition, the above-mentioned polyphonic ringtone playing strategy setting in advance can be corresponding other suitable methods that realize Ring Back Tone service arbitrarily, and be not limited only to above-described according to several methods that realize Ring Back Tone service such as calling number, called number or current slots.
The embodiment of the present invention is play corresponding CRBT according to the signaling point code comprising in the OPC Origination Point Code field of polyphonic ringtone playing request, therefore can increase CRBT selection mode, and without existing message and existing switching equipment are transformed, and only need in color ring platform, set up the related process module of carrying out coloring ring back tone playing based on signaling point code.Therefore, it is low that the embodiment of the present invention realizes cost, is easy to promote.
Fig. 3 is the logical construction block diagram according to the color ring platform 300 of one embodiment of the invention.As shown in Figure 3, color ring platform 300 comprises receiver module 302, searches module 304 and playing module 306.
Receiver module 302, for receiving polyphonic ringtone playing request, wherein, comprises OPC field in described polyphonic ringtone playing request;
Search module 304 and in the CRBT table of comparisons, search corresponding CRBT sign for the signaling point code comprising according to described OPC field, and read corresponding CRBT according to described CRBT sign;
Optionally, color ring platform 300 can comprise color ring data storehouse, for storing CRBT.Specifically, can by above-mentioned CRBT in advance batch input in color ring data storehouse, meanwhile, the corresponding relation between the CRBT sign of the CRBT signaling point code corresponding with this CRBT is write to the CRBT table of comparisons.Optionally, color ring platform 300 also can comprise input interface, for receiving signaling point code and the CRBT corresponding to described signaling point code of input, described CRBT is stored in described color ring data storehouse, and the corresponding relation between the CRBT sign of described signaling point code and described CRBT is write to the described CRBT table of comparisons.In the situation that comprising color ring data storehouse, search module 304 and read described CRBT for be identified at described color ring data storehouse according to described CRBT.
Playing module 306 is for playing described CRBT.
Optionally, for example search module 304, while also not finding corresponding CRBT sign (not finding corresponding CRBT sign in the CRBT table of comparisons) for the signaling point code comprising according to OPC field, according to the polyphonic ringtone playing strategy setting in advance, from the default table of comparisons, search corresponding CRBT sign, and read corresponding CRBT (for example reading corresponding CRBT from color ring data storehouse) according to described CRBT sign, and control playing module 306 and play.
About the ins and outs such as polyphonic ringtone playing request, the CRBT table of comparisons, polyphonic ringtone playing strategy have been described in detail in conjunction with Fig. 1 and Fig. 2 above, therefore repeat no more herein.
Fig. 4 is the logical construction block diagram according to the color ring systems 400 of one embodiment of the invention.As shown in Figure 4, color ring systems 400 comprises switching equipment 402 and color ring platform 404.
Switching equipment 402, for sending polyphonic ringtone playing request, wherein, comprises OPC field in described polyphonic ringtone playing request, the signaling point code that comprises described switching equipment in described OPC field;
Specifically, switching equipment 402 can be caller MSC, and described caller MSC is for sending described polyphonic ringtone playing request according to CRBT service provided to the calling party CAMEL-Subscription-Information or CRBT service provided to the called party CAMEL-Subscription-Information.Specifically, after the call request that receives calling subscriber, caller MSC is by respectively from calling subscriber's VLR Visitor Location Register (VLR, Visitor Location Register) and called subscriber's attaching position register (Home Location Register, HLR) obtain calling subscriber's CAMEL-Subscription-Information and called subscriber's CAMEL-Subscription-Information.For example, if calling subscriber is customized calling RBT service, will comprise CRBT service provided to the calling party CAMEL-Subscription-Information in calling subscriber's CAMEL-Subscription-Information, Ring Back Tone service sign SS_Code.For example, if called subscriber is customized called RBT service, will comprise CRBT service provided to the called party CAMEL-Subscription-Information in called subscriber's CAMEL-Subscription-Information, Ring Back Tone service sign SS_Code.In the situation that knowing the called free time, if comprise CRBT service provided to the calling party CAMEL-Subscription-Information in calling subscriber's CAMEL-Subscription-Information, or in called subscriber's CAMEL-Subscription-Information, comprise CRBT service provided to the called party CAMEL-Subscription-Information, caller MSC will send polyphonic ringtone playing request.
Switching equipment 402 can also be called MS C, and described called MS C is for sending described polyphonic ringtone playing request according to CRBT service provided to the called party CAMEL-Subscription-Information.Specifically, after receiving the call request that caller MSC sends, in the situation that knowing the called free time, for example, if comprise CRBT service provided to the called party CAMEL-Subscription-Information (Ring Back Tone service sign ss-code) from the Terminating CAMEL Subscription Information that called subscriber's VLR obtains, called MS C will send described polyphonic ringtone playing request.
Switching equipment 402 can also be TMSC, described TMSC can be caller TMSC, this caller TMSC generates described polyphonic ringtone playing request Concurrency toward color ring platform for the initial polyphonic ringtone playing request of sending according to caller MSC, and described caller MSC sends described initial polyphonic ringtone playing request according to CRBT service provided to the calling party CAMEL-Subscription-Information or CRBT service provided to the called party CAMEL-Subscription-Information.Described TMSC can also be called TMSC, this called TMSC generates described polyphonic ringtone playing request Concurrency toward color ring platform for the initial polyphonic ringtone playing request of sending according to called MS C, and described called MS C sends described initial polyphonic ringtone playing request according to CRBT service provided to the called party CAMEL-Subscription-Information.Specifically, if initial polyphonic ringtone playing request is IAM or IAI, TMSC will modify to this IAM or IAI, to generate new IAM or IAI.Above-mentioned modification includes but not limited to the signaling point code in the OPC field of IAM or IAI to be revised as the signaling point code of TMSC.
Color ring platform 404 is for receiving described polyphonic ringtone playing request, according to the signaling point code of switching equipment 402 in described OPC field, in the CRBT table of comparisons, search corresponding CRBT sign, according to described CRBT sign, read corresponding CRBT, and play described CRBT to switching equipment 402.
Should note, in specific implementation process, switching equipment is not limited only to the switching equipment in the mobile communications networks such as mobile switching centre or tandem mobile switching centre, it can also be the switching equipment in PSTN (public switch telephone network, Public Switched Telephone Network).
It should be noted that when user only customized provide with the embodiment of the present invention based on the corresponding Ring Back Tone service of signaling point code coloring ring back tone playing time, above-mentioned CRBT service provided to the calling party CAMEL-Subscription-Information or CRBT service provided to the called party CAMEL-Subscription-Information are the CAMEL-Subscription-Information that this Ring Back Tone service is corresponding.But, when the technical scheme that the embodiment of the present invention is provided combines with other schemes that realize Ring Back Tone service (for example, according to calling number, called number or current slot coloring ring back tone playing) of describing above, above-mentioned CRBT service provided to the calling party CAMEL-Subscription-Information or CRBT service provided to the called party CAMEL-Subscription-Information are likely the above-mentioned corresponding CAMEL-Subscription-Information of other schemes (that is, other Ring Back Tone services) of realizing Ring Back Tone service.In other words, even user is not customized provide with the embodiment of the present invention based on the corresponding Ring Back Tone service of signaling point code coloring ring back tone playing, but as long as user causes color ring platform to receive polyphonic ringtone playing request because of customized other Ring Back Tone services, the technical scheme providing according to the embodiment of the present invention, calling subscriber also plays uppick CRBT according to signaling point code.For example, when color ring platform and caller MSC communication connection, even the customized Ring Back Tone service of calling subscriber or called subscriber not provide with the embodiment of the present invention based on the corresponding Ring Back Tone service of signaling point code coloring ring back tone playing, but other Ring Back Tone service, but as long as calling subscriber and called subscriber the two one of customized Ring Back Tone service (for example other Ring Back Tone service), just will trigger caller MSC to the request of color ring platform transmission polyphonic ringtone playing.In this case, the technical scheme providing according to the embodiment of the present invention, calling subscriber plays uppick CRBT according to signaling point code.In like manner, when color ring platform and called MS C communication connection, even the customized Ring Back Tone service of called subscriber not provide with the embodiment of the present invention based on the corresponding Ring Back Tone service of signaling point code coloring ring back tone playing, but other Ring Back Tone service, but as long as called subscriber customized Ring Back Tone service (for example other Ring Back Tone service), just will trigger caller MSC to the request of color ring platform transmission polyphonic ringtone playing.In this case, the technical scheme providing according to the embodiment of the present invention, calling subscriber plays uppick CRBT according to signaling point code.As can be seen here, the corresponding Ring Back Tone service of technical scheme that the embodiment of the present invention provides can be used as the value-added service of other Ring Back Tone services.
It should be noted that other Ring Back Tone services mentioned above (for example, according to calling number, called number or current slot coloring ring back tone playing) can comprise multiple concrete Ring Back Tone service.For example, calling RBT service can be based on calling number, to carry out the multiple more specifically calling RBT services such as calling RBT service of loop play, called RBT service can be the multiple concrete called RBT services such as called RBT service based on calling number or called number, and called RBT service based on calling number can further derive numerous more specifically called RBT services such as group multimedia ring service, group's Ring Back Tone service.In addition, the special Ring Back Tone service that the technical scheme providing according to the embodiment of the present invention is set up, the Ring Back Tone service based on signaling point code, both can be considered to a kind of calling RBT service, also can be considered to a kind of called RBT service.Corresponding, can be this Ring Back Tone service based on signaling point code and increase corresponding CRBT service provided to the calling party CAMEL-Subscription-Information and CRBT service provided to the called party CAMEL-Subscription-Information, then the CRBT service provided to the calling party CAMEL-Subscription-Information of increase is stored in caller HLR, the CRBT service provided to the called party CAMEL-Subscription-Information of increase is stored in called HLR.
In specific implementation process, color ring platform 404 is connected to the diverse location in network, will receive different effects, below be just described in detail with embodiment in conjunction with the following drawings.
Fig. 5 is the logic diagram according to the network architecture 500 of one embodiment of the invention.As shown in Figure 5, mobile communications network 502 and travelling carriage (Mobile Station, MS) 516～518 has been shown in the network architecture 500.Mobile communications network 502 further comprises base station (Base Station, BS) 504～506, MSC/VLR (VLR Visitor Location Register, Visitor Location Register) 508, the attaching position register of MSC 510, MS 518 (Home Location Register, HLR) 512 and color ring platform 514.Wherein color ring platform 514 communication connections are to MSC/VLR 508.
When MS 516 (caller MS) makes a call to MS 518 (called MS), MSC/VLR 508 will be as caller MSC, and MSC 510 will be as called MS C.Now, the detailed process that foundation is called out as shown in Figure 6.
Fig. 6 is the signaling diagram according to the call establishment 600 of one embodiment of the invention.
Step 602, after receiving the call request that caller MS sends, caller MSC obtains calling subscriber's CAMEL-Subscription-Information from the VLR of caller MS; If comprise Ring Back Tone service sign SS_Code (be calling subscriber customized calling RBT service) in this calling subscriber's CAMEL-Subscription-Information, caller MSC will arrange CRBT sign for this calling;
Step 604, caller MSC sends SRI (Send Routing Information sends routing iinformation) message to the HLR of called MS, and this message is for the routing iinformation to called HLR request called MS;
Step 606, after receiving above-mentioned SRI message, called HLR sends PRN (ProvideRoaming Number to called MS C, Provide Roaming Number) message, this message is for obtaining the MS roaming number (Mobile Station Roaming Number, MSRN) of called MS to called MS C;
Step 608, after receiving above-mentioned PRN message, called MS C returns to PRN-ACK (PRN response) message, the MSRN that wherein comprises called MS in this message to called HLR;
Step 610, called HLR is returned to SRI-ACK (SRI response) to caller MSC, wherein comprises the MSRN of called MS.In addition in the SRI-ACK that, called HLR is returned to caller MSC, also can comprise called subscriber's CAMEL-Subscription-Information;
Step 612, caller MSC receives the MSRN of called MS and called subscriber's the CAMEL-Subscription-Information that called HLR is returned, if comprise Ring Back Tone service sign SS_Code (be called subscriber customized called RBT service) in this called subscriber's CAMEL-Subscription-Information, cause caller MSC that this calling is arranged to CRBT sign, after this, the MSRN of caller MSC based on called MS sends IAM message to called MS C;
Step 614, after receiving described IAM message, called MS C is according to this IAM calling called subscriber, if called subscriber is idle, called user terminal ring, called MS C returns to ACM (Address Complete Message, address perfect information) message to caller MSC;
Step 616, if this calling is provided with CRBT sign, caller MSC temporary suspension is connected with the speech channel of callee side, to color ring platform, sends the IAM as polyphonic ringtone playing request, the signaling point code that wherein comprises caller MSC in the OPC Origination Point Code field of this IAM;
From step 602 and 612, if among the two one of calling subscriber and called subscriber customized Ring Back Tone service, caller MSC will arrange this calling CRBT sign, just can trigger thus caller MSC and send polyphonic ringtone playing request to color ring platform.
Step 618, after the IAM sending in receiving step 616, color ring platform returns to ACM message to caller MSC;
Step 620, color ring platform extracts the signaling point code of caller MSC from the OPC Origination Point Code field of the IAM that receives, and according to described signaling point code, in the CRBT table of comparisons, searches corresponding CRBT sign, according to described CRBT sign, reads corresponding CRBT;
Step 622, color ring platform is play described CRBT to caller MSC.After this, calling subscriber is by this CRBT of uppick;
Step 624, when called subscriber's off-hook, called MS C sends ANM (Answer Message, response message) to caller MSC;
Step 626, caller MSC sends REL (Release Message) to color ring platform;
Step 628, after receiving described REL, color ring platform sends RLC (Release Complete Message) to caller MSC, after this between caller and called users, starts call.
Can be seen from the foregoing, the signaling point code of caller MSC can unique identification caller MSC service area, therefore the corresponding CRBT of signaling point code that can caller MSC is set to notice or the advertisement with geographic area (service area of this caller MSC) close association of certain limit, the common notification such as described notice can be such as but not limited to cut off the water, power failure, described advertisement can be such as but not limited to travel information advertisement.In the service area of calling subscriber in caller MSC, when the calling subscriber of therefore customized calling RBT service makes a call, notice or the advertisement of service area institute close association that will uppick caller MSC.Thus, the embodiment of the present invention just can be built into CRBT regional notice or ad distribution passage, thereby increases the practicality of Ring Back Tone service, with this, improves user's stickiness of calling RBT service.In addition, the technical scheme providing according to the embodiment of the present invention, when color ring platform is connected with caller MSC, the customized called RBT service of called subscriber also can make not calling subscriber's uppick in calling procedure notice or advertisement relevant with calling subscriber place service area of customized calling RBT service, therefore technical solution of the present invention also can improve the practicality of called RBT service indirectly, thereby improves user's stickiness of called RBT service.
As described above, when color ring platform is connected with caller MSC, as long as calling subscriber and called subscriber the two one of customized Ring Back Tone service, will cause color ring platform to calling subscriber, to play corresponding CRBT according to signaling point code.It should be noted that the not Ring Back Tone service based on signaling point code of the customized Ring Back Tone service of calling subscriber and called subscriber.For example, the customized Ring Back Tone service of calling subscriber may be according to calling number, called number or current slot, to play other Ring Back Tone services of corresponding CRBT.What in this case, calling subscriber heard is but the CRBT of playing based on signaling point code.Specifically, if calling subscriber is customized calling RBT service (corresponding to CRBT service provided to the calling party CAMEL-Subscription-Information), for example, even if the customized Ring Back Tone service of calling subscriber is not the Ring Back Tone service (other calling RBT services) based on signaling point code, the technical scheme providing according to the embodiment of the present invention, if find corresponding CRBT sign, the CRBT that calling subscriber still plays uppick color ring platform according to signaling point code according to the signaling point code comprising in OPC Origination Point Code field.In addition, can be seen from the foregoing, if called subscriber is customized called RBT service (corresponding to CRBT service provided to the called party CAMEL-Subscription-Information), for example, even if the customized Ring Back Tone service of called subscriber is not the Ring Back Tone service (other called RBT services) based on signaling point code, the technical scheme providing according to the embodiment of the present invention, if find corresponding CRBT sign, the CRBT that calling subscriber still plays uppick color ring platform according to signaling point code according to the signaling point code comprising in OPC Origination Point Code field.Known in sum, the technical scheme providing according to the embodiment of the present invention, as long as at least one party in calling subscriber and called subscriber is customized Ring Back Tone service (sending polyphonic ringtone playing request to color ring platform as long as can trigger caller MSC), no matter this Ring Back Tone service is the Ring Back Tone service of which kind of particular type, calling subscriber plays uppick color ring platform CRBT according to signaling point code.As optionally, if color ring platform does not find the CRBT that signaling point code is corresponding in the CRBT table of comparisons, can carry out coloring ring back tone playing according to calling subscriber or the customized concrete Ring Back Tone service of called subscriber, according to the polyphonic ringtone playing strategy (other Ring Back Tone services that corresponding calling subscriber or called subscriber are customized) setting in advance, from the default table of comparisons, search corresponding CRBT sign, and from color ring data storehouse, read corresponding CRBT and play according to described CRBT sign.For example, above-mentioned polyphonic ringtone playing strategy can be to play corresponding CRBT according to the information such as time period at calling number, called number or current place.Wherein, above-mentioned calling number or called number can obtain from polyphonic ringtone playing request.
Be understood that, the color ring platform that also embodiment of the present invention can be provided is connected with called mobile switching centre.Below just in conjunction with Fig. 7 and Fig. 8, this situation is described.
Fig. 7 is the logic diagram according to the network architecture 700 of one embodiment of the invention.As shown in Figure 7, mobile communications network 702 and MS 716～718 have been shown in the network architecture 700.Mobile communications network 702 further comprises BS 704～706, MSC/VLR 708, the HLR 712 of MSC/VLR 710, MS 718 and color ring platform 714.Wherein color ring platform 714 communication connections are to MSC/VLR 710.
When MS 716 (caller MS) makes a call to MS 718 (called MS), MSC/VLR 708 will be as caller MSC, and MSC/VLR 710 will be as called MS C.Now, the detailed process that foundation is called out as shown in Figure 8.
Fig. 8 is the signaling diagram according to the call establishment 800 of one embodiment of the invention.
Step 802, after receiving the call request that caller MS sends, caller MSC obtains calling subscriber's CAMEL-Subscription-Information from the VLR of caller MS;
Step 804, caller MSC sends SRI message to the HLR of called MS, and this message is for the routing iinformation to called HLR request called MS;
Step 806, after receiving above-mentioned SRI message, called HLR sends PRN message to called MS C, and this message is for obtaining the MSRN of called MS to called MS C;
Step 808, after receiving above-mentioned PRN message, called MS C returns to PRN-ACK message to called HLR, the MSRN that wherein comprises called MS in this message;
Step 810, called HLR is returned to SRI-ACK to caller MSC, wherein comprises the MSRN of called MS.In addition in the SRI-ACK that, called HLR is returned to caller MSC, also can comprise called subscriber's CAMEL-Subscription-Information;
Step 812, the MSRN of caller MSC based on called MS sends IAM to called MS C;
Step 814, after receiving described IAM message, when called MS C comprises Ring Back Tone service sign SS_Code (be called subscriber customized called RBT service) in judgement called subscriber's CAMEL-Subscription-Information, called MS C arranges CRBT sign by this calling; Called MS C is according to this IAM calling called subscriber, if called subscriber is idle, and called user terminal ring, called MS C returns to ACM to caller MSC;
Step 816, if this calling is provided with CRBT sign, called MS C sends the IAM as polyphonic ringtone playing request, the signaling point code that wherein comprises called MS C in the OPC Origination Point Code field of this IAM to color ring platform;
Step 818, after the IAM sending in receiving step 816, color ring platform returns to ACM message to called MS C;
Step 820, color ring platform extracts the signaling point code of called MS C from the OPC Origination Point Code field of the IAM that receives, and according to described signaling point code, in the CRBT table of comparisons, searches corresponding CRBT sign, according to described CRBT sign, reads corresponding CRBT;
Step 822, color ring platform is play described CRBT to called MS C, and called MS C transmits to caller MSC the CRBT that color ring platform is play by the communication link of setting up between itself and caller MSC.After this, calling subscriber is by this CRBT of uppick;
Step 824, when called subscriber's off-hook, called MS C will send ANM to caller MSC;
Step 826, called MS C sends REL (Release Message) to color ring platform;
Step 828, color ring platform sends RLC (Release Complete Message) to called MS C, after this between caller and called users, starts call.
According to the flow process shown in Fig. 8, after calling subscriber makes a call, if called subscriber customized called RBT service, triggering called MS C is sent to polyphonic ringtone playing request to color ring platform.Because color ring platform is connected with called mobile switching centre, the signaling point code therefore comprising in the OPC field of described polyphonic ringtone playing request is by the signaling point code that is called MS C.After this, color ring platform is after receiving described polyphonic ringtone playing request, by search corresponding CRBT sign in the CRBT table of comparisons according to the signaling point code of called MS C described in described OPC field, according to described CRBT sign, read corresponding CRBT, and play described CRBT to described called MS C.
Due to the signaling point code of called MS C can unique identification called MS C service area, therefore the corresponding CRBT of signaling point code that can called MS C is set to notice or the advertisement with geographic area (service area of this called MS C) close association of certain limit, the common notification such as described notice can be such as but not limited to cut off the water, power failure, described advertisement can be such as but not limited to travel information advertisement.Notice or the advertisement of the service area institute close association that so, calling subscriber will uppick called MS C after making a call.For described notice, calling subscriber can subsequently with called subscriber's communication process in, above-mentioned notice is informed to called subscriber, thereby facilitates called subscriber to understand in time the information of self region.Thus, the embodiment of the present invention just can be built into CRBT regional notice or ad distribution passage, thereby increases the practicality of called RBT service, with this, improves user's stickiness of called RBT service.In addition, can be seen from the foregoing, if called subscriber is customized called RBT service (corresponding to CRBT service provided to the called party CAMEL-Subscription-Information), for example, even if the customized Ring Back Tone service of called subscriber is not the Ring Back Tone service (other called RBT services) based on signaling point code, the technical scheme providing according to the embodiment of the present invention, calling subscriber still plays uppick color ring platform CRBT according to signaling point code.Known in sum, the technical scheme providing according to the embodiment of the present invention, as long as called subscriber is customized Ring Back Tone service (sending polyphonic ringtone playing request to color ring platform as long as can trigger called MS C), no matter this Ring Back Tone service is the Ring Back Tone service of which kind of particular type, calling subscriber plays uppick color ring platform CRBT according to signaling point code.As optionally, if color ring platform does not find the CRBT that signaling point code is corresponding in the CRBT table of comparisons, can carry out coloring ring back tone playing according to other customized Ring Back Tone services of called subscriber, according to the polyphonic ringtone playing strategy (other Ring Back Tone services that corresponding called subscriber is customized) setting in advance, from the default table of comparisons, search corresponding CRBT sign, and from color ring data storehouse, read corresponding CRBT and play according to described CRBT sign.For example, above-mentioned polyphonic ringtone playing strategy can be to play corresponding CRBT according to the information such as time period at calling number, called number or current place.Wherein, above-mentioned calling number or called number can obtain from polyphonic ringtone playing request.
Specifically, above-mentioned called RBT service can Further Division be the multiple concrete called RBT services such as called RBT service based on calling number again, and called RBT service based on calling number further derives numerous more specifically called RBT services such as group multimedia ring service, group's Ring Back Tone service, therefore, above-mentioned CRBT service provided to the called party CAMEL-Subscription-Information should be interpreted as and also comprise the corresponding CAMEL-Subscription-Information of above-mentioned more specifically Ring Back Tone service.In addition, the technical scheme that also can provide according to the embodiment of the present invention is set up special Ring Back Tone service, i.e. the Ring Back Tone service based on signaling point code.This Ring Back Tone service can be considered to a kind of calling RBT service, also can be considered to a kind of called RBT service.Corresponding, can be this Ring Back Tone service based on signaling point code increases corresponding CRBT service provided to the calling party CAMEL-Subscription-Information and CRBT service provided to the called party CAMEL-Subscription-Information, then the CRBT service provided to the called party CAMEL-Subscription-Information of increase is stored in called HLR.
Because tandem mobile switching centre often connects a plurality of mobile switching centres, so the service area area of this tandem mobile switching centre is about the service area area sum of described a plurality of mobile switching centres.For example, for the sakata section in Longgang District of Shenzhen City provides the signaling point code of the MSC of service can unique identification sakata section, and because the TMSC of Longgang District is responsible for all MSC in tandem Longgang District, so the region that the service area that the signaling point code of the TMSC of Longgang District can the above-mentioned all MSC of unique identification forms jointly, i.e. Longgang District.Thus, color ring platform is connected with tandem mobile switching centre direct communication, the coverage obtaining is larger.In addition, this tandem mobile switching centre can be caller tandem mobile switching centre, can be also called tandem mobile switching centre.Wherein, caller TMSC generates described polyphonic ringtone playing request Concurrency toward color ring platform for the initial polyphonic ringtone playing request of sending according to caller MSC, and described caller MSC sends described initial polyphonic ringtone playing request according to CRBT service provided to the calling party CAMEL-Subscription-Information or CRBT service provided to the called party CAMEL-Subscription-Information; And called TMSC generates described polyphonic ringtone playing request Concurrency toward color ring platform for the initial polyphonic ringtone playing request of sending according to called MS C, described called MS C sends described initial polyphonic ringtone playing request according to CRBT service provided to the called party CAMEL-Subscription-Information.Constipation closes the technical scheme that Fig. 9～10 pair color ring platform is connected on caller TMSC and called TMSC and is described in detail below.
Fig. 9 is the logic diagram according to the network architecture 900 of one embodiment of the invention.As shown in Figure 9, in network environment 900, caller MSC 902 communicates to connect to caller TMSC 904, and caller TMSC 904 communicates to connect to color ring platform 906.
After calling subscriber's request of making a call, if calling subscriber is customized calling RBT service, or called subscriber is customized called RBT service, caller MSC 902 will send initial polyphonic ringtone playing request according to CRBT service provided to the calling party CAMEL-Subscription-Information or CRBT service provided to the called party CAMEL-Subscription-Information.Caller TMSC 904, after receiving this initial polyphonic ringtone playing request, by generating new polyphonic ringtone playing request according to this initial polyphonic ringtone playing request, then mails to color ring platform 906 by new polyphonic ringtone playing request.Specifically, if initial polyphonic ringtone playing request is IAM or IAI, TMSC 904 can be by the signaling point code in the OPC field of this IAM or IAI, from the signaling point code of caller MSC902, be revised as the signaling point code of caller TMSC 904, by the signaling point code in the DPC field of this IAM or IAI, from the signaling point code of caller TMSC 904, be revised as the signaling point code of color ring platform 906.Thus, color ring platform 906 is after receiving described IAM or IAI, corresponding CRBT sign will be searched according to the signaling point code of caller TMSC 904 described in described OPC field in the CRBT table of comparisons, according to described CRBT sign, read corresponding CRBT, and play described CRBT to described caller TMSC.Therefore, color ring platform 906 is just realized the coloring ring back tone playing to calling subscriber by caller TMSC 904 and caller MSC 902.
Can be seen from the foregoing, the signaling point code of caller TMSC can unique identification caller TMSC service area, the corresponding CRBT of signaling point code that therefore can caller TMSC is set to notice or the advertisement with geographic area (service area of this caller TMSC) close association of certain limit.Because caller TMSC often connects a plurality of caller MSC, so the service area area of this caller TMSC is about the service area area sum of described a plurality of caller MSC.Thus, color ring platform is connected with caller TMSC direct communication, the coverage obtaining is larger.
Figure 10 is the logic diagram according to the network architecture 1000 of one embodiment of the invention.As shown in figure 10, in network environment 1000, called MS C 1002 communication connections are to called TMSC 1004, and called TMSC1004 communicates to connect to color ring platform 1006.
Calling subscriber make a call request after, if called subscriber customized called RBT service, called MS C 1002 will send initial polyphonic ringtone playing request according to CRBT service provided to the called party CAMEL-Subscription-Information.Called TMSC 1004, after receiving this initial polyphonic ringtone playing request, by generating new polyphonic ringtone playing request according to this initial polyphonic ringtone playing request, then mails to color ring platform 1006 by new polyphonic ringtone playing request.Specifically, if initial polyphonic ringtone playing request is IAM or IAI, TMSC 1004 can be by the signaling point code in the OPC field of this IAM or IAI, from the signaling point code of called MS C 1002, be revised as the signaling point code of called TMSC 1004, by the signaling point code in the DPC field of this IAM or IAI, from the signaling point code of called TMSC 1004, be revised as the signaling point code of color ring platform 1006.Thus, color ring platform 1006 is after receiving described IAM or IAI, corresponding CRBT sign will be searched according to the signaling point code of called TMSC 1004 described in described OPC field in the CRBT table of comparisons, according to described CRBT sign, read corresponding CRBT, and play described CRBT to described called TMSC 1004.Therefore, color ring platform 1006 is just realized the coloring ring back tone playing to calling subscriber by caller TMSC 1004 and caller MSC 1002.
Can be seen from the foregoing, the signaling point code of called TMSC can the called TMSC of unique identification service area, the corresponding CRBT of signaling point code that therefore can called TMSC is set to notice or the advertisement with geographic area (service area of this called TMSC) close association of certain limit.Because called TMSC often connects a plurality of called MS C, so the service area area of this called TMSC is about the service area area sum of described a plurality of called MS C.Color ring platform is connected with called TMSC direct communication, and the coverage obtaining is larger.Thus, color ring platform 706 is just realized the coloring ring back tone playing to calling subscriber by caller TMSC 704 and caller MSC 702.
It should be noted that the description based on above, those skilled in the art it should be understood that except can be to calling subscriber's coloring ring back tone playing, the technical scheme that the embodiment of the present invention provides be equally applicable to the coloring ring back tone playing to called subscriber.
Those of ordinary skills are known, and all or part of step in said method can complete by the relevant hardware of program command, and this program can be stored in a computer-readable recording medium, and this computer-readable recording medium is as ROM, RAM and CD etc.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (15)
1. a method that realizes Ring Back Tone service, is characterized in that, comprising:
Receive polyphonic ringtone playing request, in described polyphonic ringtone playing request, comprise OPC Origination Point Code OPC field, the signaling point code that described OPC field comprises switching equipment, the service area of switching equipment described in the signaling point code unique identification of described switching equipment;
According to the signaling point code comprising in described OPC field, in the CRBT table of comparisons, search corresponding CRBT sign, and reading corresponding CRBT according to described CRBT sign, the CRBT corresponding with signaling point code is set to the notice or the advertisement that are associated with described signaling point code institute uniquely identified service area;
Play described CRBT.
2. the method for claim 1, is characterized in that, described polyphonic ringtone playing request is initial address message IAM or with the initial address message IAI of additional information.
3. method as claimed in claim 1 or 2, is characterized in that, describedly according to described CRBT sign, reads corresponding CRBT and further comprises, according to described CRBT sign, reads corresponding CRBT from color ring data storehouse.
4. method as claimed in claim 3, it is characterized in that, also comprise, receive signaling point code and the CRBT corresponding to described signaling point code of input, described CRBT is stored in described color ring data storehouse, and the corresponding relation between the CRBT sign of described signaling point code and described CRBT is write to the described CRBT table of comparisons.
5. the method for claim 1, is characterized in that, the request of described reception polyphonic ringtone playing further comprises, the polyphonic ringtone playing request that color ring platform reception switching equipment sends, and described OPC field is included in the routing label of described polyphonic ringtone playing request.
6. method as claimed in claim 5, is characterized in that, described switching equipment is calling mobile exchanging center MSC, called MS C or the TMSC of tandem mobile switching centre; When described switching equipment is described TMSC, the service area of TMSC is the service area sum of a plurality of MSC of described TMSC institute tandem described in described signaling point code institute uniquely identified.
7. the method for claim 1, it is characterized in that, described method also comprises, when not finding CRBT corresponding to described signaling point code sign, according to the polyphonic ringtone playing strategy setting in advance, from the default table of comparisons, search corresponding CRBT sign, and read corresponding CRBT according to described CRBT sign; And play described CRBT.
8. a color ring platform, is characterized in that, comprising:
Receiver module, for receiving polyphonic ringtone playing request, comprises OPC field in described polyphonic ringtone playing request, the signaling point code that described OPC field comprises switching equipment, the service area of switching equipment described in the signaling point code unique identification of described switching equipment;
Search module, according to the signaling point code comprising in described OPC field, in the CRBT table of comparisons, search corresponding CRBT sign, and reading corresponding CRBT according to described CRBT sign, the CRBT corresponding with signaling point code is set to the notice or the advertisement that are associated with described signaling point code institute uniquely identified service area;
Playing module, for playing described CRBT.
9. color ring platform as claimed in claim 8, is characterized in that, also comprises:
Color ring data storehouse, for storing at least one CRBT;
The described module of searching reads described CRBT for be identified at described color ring data storehouse according to described CRBT.
10. color ring platform as claimed in claim 9, is characterized in that, also comprises:
Input interface, for receiving signaling point code and the CRBT corresponding to described signaling point code of input, described CRBT is stored in described color ring data storehouse, and the corresponding relation between the CRBT sign of described signaling point code and described CRBT is write to the described CRBT table of comparisons.
11. color ring platforms as claimed in claim 8, it is characterized in that, the described module of searching is not also for when finding CRBT corresponding to described signaling point code sign, according to the polyphonic ringtone playing strategy setting in advance, from the default table of comparisons, search corresponding CRBT sign, and read corresponding CRBT according to described CRBT sign; And control described playing module and play described CRBT.
12. 1 kinds of color ring systems, is characterized in that, comprise color ring platform, and this color ring platform can communicate with at least one switching equipment:
Described switching equipment is used for sending polyphonic ringtone playing request, in described polyphonic ringtone playing request, comprises OPC field, the signaling point code that comprises described switching equipment in described OPC field, the service area of switching equipment described in the signaling point code unique identification of described switching equipment;
Described color ring platform is used for receiving described polyphonic ringtone playing request, according to the signaling point code of the described switching equipment comprising in described OPC field, in the CRBT table of comparisons, search corresponding CRBT sign, according to described CRBT sign, read corresponding CRBT, and play described CRBT to described switching equipment, the CRBT corresponding with signaling point code is set to the notice or the advertisement that are associated with described signaling point code institute uniquely identified service area.
13. color ring systems as claimed in claim 12, is characterized in that, described switching equipment is caller MSC, and described caller MSC is for sending described polyphonic ringtone playing request according to CRBT service provided to the calling party CAMEL-Subscription-Information or CRBT service provided to the called party CAMEL-Subscription-Information to described color ring platform.
14. color ring systems as claimed in claim 12, is characterized in that, described switching equipment is called MS C, and described called MS C is for sending described polyphonic ringtone playing request according to CRBT service provided to the called party CAMEL-Subscription-Information to described color ring platform.
15. color ring systems as claimed in claim 12, is characterized in that, described switching equipment is TMSC;
Described TMSC generates described polyphonic ringtone playing request for the initial polyphonic ringtone playing request of sending according to caller MSC, and sending described polyphonic ringtone playing request to described color ring platform, described caller MSC sends described initial polyphonic ringtone playing request according to CRBT service provided to the calling party CAMEL-Subscription-Information or CRBT service provided to the called party CAMEL-Subscription-Information; Or
Described TMSC generates described polyphonic ringtone playing request for the initial polyphonic ringtone playing request of sending according to called MS C, and sending described polyphonic ringtone playing request to described color ring platform, described called MS C sends described initial polyphonic ringtone playing request according to CRBT service provided to the called party CAMEL-Subscription-Information.
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