CN100466669C - Method for providing ring-back tone service in communication network - Google Patents

Method for providing ring-back tone service in communication network Download PDF

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Publication number
CN100466669C
CN100466669C CNB200410088945XA CN200410088945A CN100466669C CN 100466669 C CN100466669 C CN 100466669C CN B200410088945X A CNB200410088945X A CN B200410088945XA CN 200410088945 A CN200410088945 A CN 200410088945A CN 100466669 C CN100466669 C CN 100466669C
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China
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called
back tone
roaming number
ring back
scp
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CNB200410088945XA
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Chinese (zh)
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CN1774014A (en
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蔡永峰
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Abstract

A method for providing ring back tone service in communication network includes setting up ring back tone device in communication network, setting route address of said device to be a roaming number section then storing user ring back tone service logon information on SCP, obtaining called contract information from called HLR when calling request is received by calling switching device, reporting said calling information to SCP and selecting an idle roaming number as route address of ring back tone device and sending it back to calling switching device if user is logged on user of ring back tone service, broadcasting ring back tone custom-made in advance to calling by ring back tone device when called terminal is idle.

Description

A kind of method that audible ringing tone service is provided in communication network
Technical field
The bell sound that the present invention relates to communication network provides technology, is specifically related to a kind of method that audible ringing tone service is provided in communication network.
Background technology
In existing communication network, no matter be fixed communication network, global mobile communication (GSM) network or code division multiple access (CDMA) mobile communications network, when the calling subscriber calls out the called subscriber, at terminal called is that idle condition and called subscriber are still during dont answer, communication network will be play traditional ring-back tone of called switching equipment to the calling subscriber, just the sound of " pouting ... pout ... ".
Fig. 1 shows the network configuration of existing GSM mobile communications network.As shown in Figure 1, the GSM mobile communications network comprises calling terminal A corresponding to the calling subscriber, corresponding to called subscriber's terminal called B and calling mobile exchanging center (O_MSC) and called mobile switching centre (T_MSC), also comprise attaching position register (HLR) in addition.Calling mobile exchanging center here and called mobile switching centre be caller switching equipment and called switching equipment just.
Fig. 2 shows the existing method flow that ring-back tone is provided in the GSM mobile communications network.As shown in Figure 2, when the calling subscriber dials called subscriber's the telephone number of terminal called B by calling terminal A, after O_MSC receives phone call request from portable terminal A in step 201, to the called roaming number of the HLR of called ownership request.
To 204, HLR sends the message of the called roaming number of request to T_MSC in step 202.T_MSC is roaming number of called distribution, and just MSRN returns to HLR then.HLR returns to O_MSC with called MSRN then.
In step 205, O_MSC sends initial address message (IAM) to T_MSC.In step 206, T_MSC behind the IAM that receives from O_MSC, calling called subscriber, the state with terminal called B sends to O_MSC by Address Complete Message (ACM) then.Here the state of terminal called B may be idle, also may be hurry, shutdown, out of reach or the like.
In step 207, T_MSC judges the state of terminal called B, if idle, plays traditional ring-back tone by O_MSC to calling terminal A in step 208, if busy, shutdown or out of reach or the like are then play corresponding voice suggestion by O_MSC to calling terminal A.
In step 209, after called subscriber's off-hook was replied, terminal called B sent response message (ANM) to T_MSC, and T_MSC sends ANM to O_MSC then, and stops playing RBT, sets up the communication session between calling terminal A and the terminal called B.
Though above-described prior art can realize the playing RBT to the calling subscriber,, the prior art has following shortcoming:
At first, the prior art is the sound of " the pouting ... pout ... " of dullness for the ring-back tone that the user provided, the ring-back tone of this dullness can't satisfy the personal needs of user to ring-back tone, and adopts the ring-back tone of this dullness also to limit the raising of communications service provider to service quality.
Secondly, in the prior art, when the calling subscriber when the called subscriber makes a call, for what the calling subscriber play all is unified dullness " pouting ... pout ... " sound, therefore, make the prior art to provide the ring-back tone different, make that the calling subscriber is difficult to distinguish different called subscribers according to ring-back tone for the calling subscriber with respect to each called subscriber.
Once more, since with " pouting ... pout ... " sound of dullness as unified ring-back tone, therefore, music that the user can't like oneself or speech customization are ring-back tone, thereby can't satisfy user's personal needs, the service function of limiting telecommunication network makes that the user can't obtain more fully, service freely.
In a word, in the existing system and method that ring-back tone is provided, all ring-back tones are all play by switching equipment, and be machine-made dull ring-back tone for different callers and called all ring-back tones, thereby, can not satisfy the personal needs of different user, can not realize distinguishing different users according to ring-back tone.The prior art can not satisfy user's requirement higher to communication service, thereby has limited the development of whole communication service.
Summary of the invention
In view of this, main purpose of the present invention is to propose a kind of method that ring-back tone is provided in communication network, playing different bell sounds at different users, thereby satisfies user's individual demand.
Above-mentioned purpose of the present invention is achieved by the following technical solutions:
A kind of method that audible ringing tone service is provided in communication network, this communication network comprise SCP, caller switching equipment and called switching equipment at least, and this method comprises:
A. in communication network, further set up the ring back tone device that is used to store with playing RBT, and the routing address of ring back tone device is set to a roaming number section; Preserve user's audible ringing tone service log-on message on SCP, described audible ringing tone service log-on message comprises that at least whether the expression user is audible ringing tone service registered user's flag information and as the described roaming number section of ring back tone device routing address;
B. after the caller switching equipment receives phone call request, obtain called CAMEL-Subscription-Information from the HLR of called ownership, call information is reported SCP, SCP judges that according to described flag information a user relevant with this call is after the audible ringing tone service registered user again, from described roaming number section, select an idle roaming number to return to the caller switching equipment, and foundation is as the described roaming number of the routing address of ring back tone device and the corresponding relation between the called number as the routing address of ring back tone device;
C. the caller switching equipment is connected to ring back tone device according to the roaming number that receives with calling, ring back tone device obtains called roaming number based on described corresponding relation, be established to the connection of called switching equipment then according to the called roaming number that is obtained, when terminal called was idle, ring back tone device was play the ring-back tone that is customized in advance by this user to caller.
Preferably, ring back tone device obtains called roaming number based on described corresponding relation and comprises among the step c:
What ring back tone device sent the roaming number information comprise described routing address as ring back tone device to SCP obtains the called number request message, SCP determines corresponding called number according to described corresponding relation, and obtain called roaming number from the HLR of called ownership according to described called number, then called roaming number is returned to ring back tone device.
Wherein, SCP obtains called roaming number according to called number from the HLR of called ownership and comprises:
SCP to the HLR of called ownership send comprise called number obtain the routing number request message;
HLR sends the request message that obtains called roaming number to the called visit ground of called number correspondence switching equipment;
Called visit ground switching equipment is roaming number of called distribution, and this roaming number is returned to HLR;
HLR returns to SCP by obtaining the routing number request response with described roaming number.
Perhaps, ring back tone device obtains called roaming number based on described corresponding relation and comprises among the step c:
Ring back tone device to SCP send comprise as the roaming number information of the routing address of ring back tone device obtain the called number request message, SCP determines corresponding called number according to described corresponding relation, then this called number is returned to ring back tone device;
Ring back tone device obtains called roaming number according to described called number from the attaching position register HLR of called ownership.
Wherein, ring back tone device obtains called roaming number from the HLR of called ownership and comprises:
Ring back tone device to the HLR of called ownership send comprise called number information obtain the routing number request message;
HLR sends the request message that obtains called roaming number to the called visit ground of called number correspondence switching equipment;
Called visit ground switching equipment is roaming number of called distribution, and this roaming number is returned to HLR;
HLR returns to ring back tone device by obtaining the routing number request response with described roaming number.
This method may further include: SCP receive obtain the called number request message from ring back tone device described after, this is re-set as idle roaming number for roaming number that ring back tone device distributes.
Here called roaming number is a mobile station roaming number (MSRN) in the gsm system, or the Temporary Local Directory Number in the cdma system (TLDN).
May further include among the step b: SCP is after judging that according to described flag information the user is not the audible ringing tone service registered user, directly send and continue instruction to the caller switching equipment, the caller switching equipment is established to the connection of called switching equipment, at called state when being idle, called switching equipment by the caller switching equipment to the caller playing RBT.
Here relevant with a call user is calling subscriber or called subscriber.
From technical scheme of the present invention as can be seen, the present invention is provided with an independently ring back tone device in communication network, and this ring back tone device has been stored the ring-back tone of customization and can have been play this ring-back tone to the user by switching equipment.Simultaneously, on SCP, preserved user's audible ringing tone service log-on message.Receive user's phone call request as SCP after, at first determine by the audible ringing tone service log-on message whether calling subscriber or called subscriber have registered audible ringing tone service, after definite calling subscriber or called subscriber have registered audible ringing tone service, the routing address of ring back tone device is sent to the caller switching equipment, the caller switching equipment is established to the connection of ring back tone device according to this routing address, ring back tone device obtains called roaming address then, and is established to the connection of called switching equipment according to called roaming address.When terminal called was idle, ring back tone device can be by the caller switching equipment to the caller playing RBT.Like this, the present invention can play the colourful ring-back tone that is customized by calling subscriber or called subscriber to the calling subscriber, thereby has satisfied the personal needs of user for ring-back tone.
In addition, pre-determined the roaming number section that comprises a plurality of roaming numbers for ring back tone device among the present invention, after determining to need the connection ring back tone device, SCP selects an idle roaming number to distribute to ring back tone device and the roaming number that is distributed is sent to the caller switching equipment from roaming number section.The caller switching equipment is established to the connection of ring back tone device according to this roaming number.The roaming number of these roaming numbers and common switching equipment is identical on form, not needing to distinguish the target that speech channel connects like this for the caller switching equipment is another switching equipment or ring back tone device, for other regional operators, the operator in other provinces for example, do not need to set up separately route data, only need speech channel be connected to this roaming number corresponding equipment and get final product according to the roaming number of the same format that receives about ring back tone device.Thereby method of the present invention does not need other operators to increase the route data of ring back tone device in switching equipment, just can make the user in the operational area under the non-local operator dial the ring-back tone of hearing customization when called.In other words, even the common carrier of the current location of calling subscriber does not provide audible ringing tone service, hear the ring-back tone of customization in the time of also can roaming by calling subscriber of the present invention, thereby further enlarged the range of application of audible ringing tone service in the whole nation.
Description of drawings
Fig. 1 is the basic block diagram of GSM mobile communications network in the prior art.
Fig. 2 is the method flow diagram that ring-back tone is provided to the user in the GSM mobile communications network in the prior art.
Fig. 3 is according to structure of mobile communication network schematic diagram of the present invention.
Fig. 4 is the overview flow chart of the method according to this invention.
Fig. 5 is the Signalling exchange flow chart according to the first embodiment of the present invention.
Fig. 6 is a Signalling exchange flow chart according to a second embodiment of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
In the present invention, by in existing communication network, increasing a ring back tone device (RBTS) that is used to preserve and play by the ring-back tone of customization, by the intelligent network triggering mode ring back tone device is arrived in call proceeding, then by ring back tone device to calling subscriber's playing RBT, thereby make the calling subscriber can hear colourful bell sound.
It is the system configuration of the present invention of example that Fig. 3 shows with the GSM mobile communications network.As can be seen from Figure 3, provide the system of ring-back tone not only to comprise O_MSC, T_MSC, HLR, SCP, further comprise the RBTS that is used to preserve and provide ring-back tone.
The MSC here mainly finishes Service Switching Function and CCF, O_MSC wherein is calling subscriber's MSC or a GMSC (gateway mobile switching center) (GMSC), T_MSC is called subscriber's a visited MSC, the main current information of preserving the called subscriber, and in calling procedure, be accomplished to continuing between the called subscriber.
HLR mainly preserves the essential information of portable terminal, for example CAMEL-Subscription-Information of intelligent network user or the like.
SCP is the service control point of intelligent network, and its effect is the control IN service, preserves user's audible ringing tone service log-on message simultaneously in the SCP self database, comprises at least whether the user has registered the flag information of audible ringing tone service and the routing iinformation of RBTS.
In addition, can also further comprise a SP in the system, SP can provide various ring-back tones, and these ring-back tones can be uploaded among the RBTS by modes such as Internets, plays to the user for RBTS.
Can further include an accounting system in the system, be used for user's conversation is chargeed.
In Fig. 3, heavy line is represented trunk line, can transmit speech and signaling, and fine line is represented signaling link, be used to transmit signaling, and dotted line is represented data link, is used to transmit data.Hereinafter all system diagrams are not always the case, no longer respectively explanation.
In the said system structure, terminal A and B are connected respectively to O_MSC, T_MSC, and the speech channel between A and the B continues through RBTS, that is to say that RBTS is as continue calling between O_MSC and the T_MSC of intermediate equipment.O_MSC and T_MSC are connected to SCP simultaneously, and SCP is connected to HLR.In this structure, RBTS not only by O_MSC to calling subscriber's playing RBT, go back simultaneously the relaying caller and called between speech channel.
Fig. 4 shows group method flow process of the present invention.As shown in Figure 4, in step 401, in communication network, set up the RBTS be used to store with playing RBT, and the routing address of RBTS is set to a roaming number section.
The roaming number that roaming number section comprised here is identical with the form of existing roaming number, be to reserve among the mobile network and the number of pre-configured route data, therefore the MSC of the whole network supports this roaming number section, and can route the call to RBTS according to the roaming number that comprises in this roaming number section.
In step 402, on SCP, preserve user's audible ringing tone service log-on message.The audible ringing tone service log-on message here comprises that at least whether the expression user is audible ringing tone service registered user's flag information and as the roaming number section of ring back tone device routing address.
In step 403, after the caller switching equipment receives phone call request from caller, obtain called CAMEL-Subscription-Information from the HLR of called subscriber's ownership, call information is reported SCP.
In step 404, SCP judges according to flag information whether a user relevant with this call is the audible ringing tone service registered user, if, execution in step 405 and subsequent step thereof; Otherwise execution in step 410 and subsequent step thereof.
In step 405, SCP selects an idle roaming number to return to the caller switching equipment as the routing address of ring back tone device from roaming number section.
In step 406, the caller switching equipment routes the call to ring back tone device according to this roaming number.
In step 407, ring back tone device obtains called roaming number, routes the call to called switching equipment according to called roaming number then.
In step 408, called switching equipment sends the message that called state be the free time detecting after terminal called is idle condition to ring back tone device.
In step 409, ring back tone device is play ring-back tone by customization by the caller switching equipment to the calling subscriber.
In step 410, SCP directly sends one to the caller switching equipment and continues order (CONTINUE).
In step 411, the caller switching equipment routes the call to called switching equipment.
In step 412, called switching equipment is play original ring-back tone by the caller switching equipment to caller, just " pouting ... pout ... " sound of the dullness of system default detecting after terminal called is idle condition.
In above-mentioned flow process, the roaming number section that the networking initial stage is reserved is assigned as the routing number of RBTS, because the roaming number section of reserving just was provided with at the networking initial stage, so the switching equipment that each regional common carrier is administered can both be discerned these roaming numbers, and do not need again the new data of configuration in switching equipment again, thereby provide ring-back not need to go to coordinate the problem of configuration data because of the common carrier in the zone of business to other regional common carriers, and only need specify this roaming number end to point to the routing iinformation of RBTS at tandem exchange's switch in own zone, in the time of just can realizing the called subscriber of any calling user dials this area in the whole network, can hear the ring-back tone that the called subscriber customizes.
That is to say, other regional common carriers do not need to dispose the route data of RBTS, the tandem equipment that it only need route the call to the zone of roaming number front field correspondence according to the front field of roaming number gets final product, and determines to route the call to which equipment by the tandem equipment of one's respective area according to the route data of RBTS.The route data that so only needs the common carrier configuration RBTS of one's respective area, and do not need other regional common carriers will dispose the route data of RBTS yet, thereby providing for the demand of existing equipment upgrading still less of audible ringing tone service is provided, and therefore the realization of audible ringing tone service is more prone to.
By two specific embodiments overall procedure shown in Figure 4 is elaborated again below.Fig. 5 shows the first embodiment of the present invention.As shown in Figure 5, in step 501, be initiated to the call of terminal called B by calling terminal A when caller, O_MSC receives the phone call request from calling terminal A, to the request that called subscriber's routing iinformation is obtained in the HLR of called subscriber's ownership transmission, this request comprises called subscriber's information such as called number.
In step 502, HLR knows that according to called number the called subscriber is an intelligent network user, thereby called subscriber's T-CSI information is sent to O_MSC.Here,, therefore the called subscriber is registered as intelligent network user, called subscriber's intelligent subscription data is arranged at HLR owing to trigger by Intellight network mode in the present embodiment.
In step 503, O_MSC knows that the called subscriber is an intelligent network user after getting access to called subscriber's intelligent CAMEL-Subscription-Information, therefore call-related information is sent to SCP.The call-related information here comprises calling number and called number etc. at least.Here for the GSM network, call-related information sends by IDP message, and for cdma network, call-related information sends by ANLYZD message.
In step 504, SCP carries out authentication to the called subscriber, and judges according to the called subscriber's who self preserves audible ringing tone service log-on message whether the called subscriber is the audible ringing tone service registered user after authentication.If carry out follow-up flow process.Continue (CONTINUE) instruction otherwise directly send, after O_MSC receives this instruction, handle, just handle according to flow process shown in Figure 2 according to existing call flow to O_MSC.
In step 505, SCP is the roaming number that the free time of RBTS is pointed in one of called distribution in roaming number section, hereinafter is called first roaming number, and this number is set to " doing ", represents that just this roaming number uses.Simultaneously, SCP writes down the corresponding relation of first roaming number and original called number.Then, SCP sends to O_MSC with first roaming number.
In step 506, O_MSC is RBTS according to the routing address that first roaming number that receives analyzes this number, sends IAM to RBTS then, and wherein called number is first roaming number, and calling number is calling subscriber's a number.Simultaneously RBTS is arrived in call proceeding.
In step 507, RBTS obtains called number message to the SCP transmission after receiving IAM, comprise first roaming number in this message.
In step 508 to 511, SCP determines to obtain called number according to first roaming number from the corresponding relation that writes down in advance, then first roaming number is re-set as " sky ", so that use for new audible ringing tone service, send to the HLR of called subscriber's ownership then and get the routing number request message, HLR is after receiving this request message, send the request of obtaining called roaming number to T_MSC, T_MSC distributes a roaming number for the called subscriber, be herein referred to as second roaming number, then second roaming number is sent to HLR, HLR is that second roaming number of called distribution sends to SCP by obtaining the routing number request response with T_MSC then.For the GSM network, second roaming number is MSRN, and for cdma network, second roaming number is TLDN.
In step 512,513, SCP sends to RBTS with MSRN/TLDN, and RBTS sends to T_MSC with calling number and called MSRN/TLDN by IAM behind the roaming number that receives from SCP.
In step 514, the T_MSC paging is called, and called state information is sent to RBTS by Address Complete Message (ACM).
In step 515, RBTS judges according to ACM whether called current state is idle, if, in step 516, RBTS sends ACM to O_MSC, and searches the ring-back tone of called subscriber's customization according to called Mobile Subscriber International ISDN Number, plays the ring-back tone of called subscriber's customization then to the calling subscriber by O_MSC, shield traditional ring-back tone that T_MSC plays simultaneously, carry out subsequent step then.If called current state is not idle, for example busy, shutdown or out of reach, RBTS will to the caller playing RBT so, but by O_MSC to the expression user that caller transparent transmission T_MSC plays hurry, the voice messaging of shutdown or out of reach.
In step 517, when called off-hook is replied, T_MSC sends a response message (ANM) to RBTS, RBTS is after receiving this ANM, in step 518 ANM is sent to O_MSC, stop simultaneously to the caller playing RBT, and set up speech channel between O_MSC and the T_MSC, thereby calling subscriber and called subscriber are conversed through own relaying.
In above-mentioned first embodiment, be to obtain called roaming number to the HLR of called ownership by SCP.Under actual conditions, also can called number be sent to RBTS by SCP, obtain called roaming number by RBTS to the HLR of called ownership.For this reason, the present invention proposes as shown in Figure 6 second embodiment.
In step 601, be initiated to the call of terminal called B by calling terminal A when caller, O_MSC receives the phone call request from calling terminal A, to the request that called subscriber's routing iinformation is obtained in the HLR of called subscriber's ownership transmission, this request comprises called subscriber's information such as called number.
In step 602, HLR knows that according to called number the called subscriber is an intelligent network user, thereby called subscriber's T-CSI information is sent to O_MSC.Here,, therefore the called subscriber is registered as intelligent network user, called subscriber's intelligent subscription data is arranged at HLR owing to trigger by Intellight network mode in the present embodiment.
In step 603, O_MSC knows that the called subscriber is an intelligent network user after getting access to called subscriber's intelligent CAMEL-Subscription-Information, therefore call-related information is sent to SCP.The call-related information here comprises calling number and called number etc. at least.Here for the GSM network, call-related information sends by IDP message, and for cdma network, call-related information sends by ANLYZD message.
In step 604, SCP carries out authentication to the called subscriber, and judges according to the called subscriber's who self preserves audible ringing tone service log-on message whether the called subscriber is the audible ringing tone service registered user after authentication.If carry out follow-up flow process.Continue (CONTINUE) instruction otherwise directly send, after O_MSC receives this instruction, handle, just handle according to flow process shown in Figure 2 according to existing call flow to O_MSC.
In step 605, SCP is the roaming number that the free time of RBTS is pointed in one of called distribution in roaming number section, hereinafter is called first roaming number, and this number is set to " doing ", represents that just this roaming number uses.Simultaneously, SCP writes down the corresponding relation of first roaming number and original called number.Then, SCP sends to O_MSC with first roaming number.
In step 606, O_MSC is RBTS according to the routing address that first roaming number that receives analyzes this number, sends IAM to RBTS then, and wherein called number is first roaming number, and calling number is calling subscriber's a number.Simultaneously RBTS is arrived in call proceeding.
In step 607, RBTS obtains called number message to the SCP transmission after receiving IAM, comprise first roaming number in this message.
In step 608, SCP determines to obtain called number according to first roaming number from the corresponding relation that writes down in advance, then first roaming number is re-set as " free time ", so that use for new audible ringing tone service, returns called number to RBTS then.
In step 609 to 612, RBTS sends to the HLR of called subscriber's ownership and obtains the routing number request response, HLR is after receiving this request message, send the request of obtaining called roaming number to T_MSC, T_MSC distributes a roaming number for the called subscriber, then this roaming number is sent to HLR, HLR is that the roaming number of called distribution sends to RBTS by obtaining the routing number request response with T_MSC then.For the GSM network, roaming number is MSRN, and for cdma network, roaming number is TLDN.
In step 613, RBTS sends to T_MSC with calling number and called roaming number by IAM behind the roaming number that receives from HLR.
In step 614, the T_MSC paging is called, and called state information is sent to RBTS by ACM.
In step 615, RBTS judges according to ACM whether called current state is idle, if, in step 616, RBTS sends ACM to O_MSC, and searches the ring-back tone of called subscriber's customization according to called Mobile Subscriber International ISDN Number, plays the ring-back tone of called subscriber's customization then to the calling subscriber by O_MSC, shield traditional ring-back tone that T_MSC plays simultaneously, carry out subsequent step then.If called current state is not idle, for example busy, shutdown or out of reach, RBTS will to the caller playing RBT so, but by O_MSC to the expression user that caller transparent transmission T_MSC plays hurry, the voice messaging of shutdown or out of reach.
In step 617, when called off-hook is replied, T_MSC sends an ANM to RBTS, RBTS is after receiving this ANM, in step 618 ANM is sent to O_MSC, stop simultaneously to the caller playing RBT, and set up speech channel between O_MSC and the T_MSC, thereby calling subscriber and called subscriber are conversed through own relaying.
The above only is the displaying of spirit of the present invention, and not should be understood to limitation of the present invention.

Claims (9)

1. method that audible ringing tone service is provided in communication network, this communication network comprises service control point (SCP), caller switching equipment and called switching equipment at least, this method comprises:
A. in communication network, further set up the ring back tone device that is used to store with playing RBT, and the routing address of ring back tone device is set to a roaming number section; Preserve user's audible ringing tone service log-on message on SCP, described audible ringing tone service log-on message comprises that at least whether the expression user is audible ringing tone service registered user's flag information and as the described roaming number section of ring back tone device routing address;
B. after the caller switching equipment receives phone call request, obtain called CAMEL-Subscription-Information from the attaching position register HLR of called ownership, call information is reported SCP, SCP judges that according to described flag information a user relevant with this call is after the audible ringing tone service registered user again, from described roaming number section, select an idle roaming number to return to the caller switching equipment, and foundation is as the described roaming number of the routing address of ring back tone device and the corresponding relation between the called number as the routing address of ring back tone device;
C. the caller switching equipment is connected to ring back tone device according to the roaming number that receives with calling, ring back tone device obtains called roaming number based on described corresponding relation, be established to the connection of called switching equipment then according to the called roaming number that is obtained, when terminal called was idle, ring back tone device was play the ring-back tone that is customized in advance by this user to caller.
2. method according to claim 1 is characterized in that, ring back tone device obtains called roaming number based on described corresponding relation and comprises among the step c:
What ring back tone device sent the roaming number information comprise described routing address as ring back tone device to SCP obtains the called number request message, SCP determines corresponding called number according to described corresponding relation, and obtain called roaming number from the HLR of called ownership according to described called number, then called roaming number is returned to ring back tone device.
3. method according to claim 2 is characterized in that, described SCP obtains called roaming number according to called number from the HLR of called ownership and comprises:
SCP to the HLR of called ownership send comprise called number obtain the routing number request message;
HLR sends the request message that obtains called roaming number to the called visit ground of called number correspondence switching equipment;
Called visit ground switching equipment is roaming number of called distribution, and this roaming number is returned to HLR;
HLR returns to SCP by obtaining the routing number request response with described roaming number.
4. method according to claim 1 is characterized in that, ring back tone device obtains called roaming number based on described corresponding relation and comprises among the step c:
Ring back tone device to SCP send comprise as the roaming number information of the routing address of ring back tone device obtain the called number request message, SCP determines corresponding called number according to described corresponding relation, then this called number is returned to ring back tone device;
Ring back tone device obtains called roaming number according to described called number from the attaching position register HLR of called ownership.
5. method according to claim 4 is characterized in that, described ring back tone device obtains called roaming number from the HLR of called ownership and comprises:
Ring back tone device to the HLR of called ownership send comprise called number information obtain the routing number request message;
HLR sends the request message that obtains called roaming number to the called visit ground of called number correspondence switching equipment;
Called visit ground switching equipment is roaming number of called distribution, and this roaming number is returned to HLR;
HLR returns to ring back tone device by obtaining the routing number request response with described roaming number.
6. according to any described method in the claim 2 to 5, it is characterized in that, this method further comprises: SCP receive obtain the called number request message from ring back tone device described after, this is re-set as idle roaming number for roaming number that ring back tone device distributes.
7. according to any described method in the claim 1 to 5, it is characterized in that described called roaming number is the mobile station roaming number MSRN in the global mobile communication gsm system, or the Temporary Local Directory Number TLDN in the CDMA systems.
8. method according to claim 1, it is characterized in that, further comprise among the step b: SCP is after judging that according to described flag information the user is not the audible ringing tone service registered user, directly send and continue instruction to the caller switching equipment, the caller switching equipment is established to the connection of called switching equipment, at called state when being idle, called switching equipment by the caller switching equipment to the caller playing RBT.
9. method according to claim 1 is characterized in that, a described user relevant with call is calling subscriber or called subscriber.
CNB200410088945XA 2004-11-09 2004-11-09 Method for providing ring-back tone service in communication network Expired - Fee Related CN100466669C (en)

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CN101227736B (en) 2007-12-27 2011-08-10 华为技术有限公司 Call control method and communication system as well as related equipment
CN102131312B (en) * 2010-01-20 2014-01-08 中国电信股份有限公司 Playing method and method of customized polyphonic ringtone during roaming

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CN1523904A (en) * 2003-07-21 2004-08-25 中国移动通信集团公司 A method for providing personalized ring back tone in mobile intelligent network system

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