CN107529151A - A kind of method for realizing service switching, application server and system - Google Patents
A kind of method for realizing service switching, application server and system Download PDFInfo
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- CN107529151A CN107529151A CN201610460185.3A CN201610460185A CN107529151A CN 107529151 A CN107529151 A CN 107529151A CN 201610460185 A CN201610460185 A CN 201610460185A CN 107529151 A CN107529151 A CN 107529151A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
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Abstract
The invention discloses a kind of method for realizing service switching,Application server and system,Utilize the present invention,The business triggering message that service switching terminal reports can be received,Media server is controlled to keep terminal plays calling to keep prompt tone to business,Afterwards,After the service switching message that service switching terminal reports is received,Service switching and media negotiation can be carried out according to service switchover parameter therein terminal corresponding with the service switchover,And media server is controlled to carry out corresponding playback to terminal corresponding to the service switchover,Based on above-mentioned mechanism,The present embodiment may be implemented in the purpose that button in call realizes service switching in common terminal,For relative to the terminal for needing higher level in the prior art or setting up the scheme of WEB server,The present invention is without being improved or setting up to terminal and network element device,Reduce the cost of deployment,Be advantageous to the popularity of expanded application,With more practicality and adaptability,Be advantageous to lift Consumer's Experience.
Description
Technical field
The present invention relates to communication technical field, and in particular to a kind of method for realizing service switching, application server and system.
Background technology
At present, in talk business, blind turn belongs to service switchover after call, blind turn of main meaning is that after any user A and service-user B converses, user B does switch over operation, take any user C number information, user B is exited, AS (Application Server, application server) calling party C where user B, user's C rings, user A listens ring-back tone, user's C off-hooks, and user A and user C converses.
The existing blind technology that turns typically has following three kinds of implementations：
One, for terminal corresponding to user B for advanced sip terminal and with the ability for sending REFER message, the number that user C is carried by REFER gives AS, AS release user B and calling party C, and user A is associated with user C, realizes blind turn.
Two, terminal corresponding to user B has the ability of two tunnels calling, new calling can be dialed once again on the basis of having conversed, the called number of request is the number that blind transferring operation command code adds user C, and record the call-information of the corresponding callings of user B and user A in advance by AS, AS release user B and calling party C, and user A is associated with user C, realize blind turn.
Three, the message for carrying user's C numbers is sent by WEB server to AS, is applicable in the business function such as click to dial or exchange seat, AS release user B simultaneously calling party C, and user A is associated with user C, realizes blind turn.
Requirement of the first two mode to terminal is higher, it is necessary to which terminal supports special key and has the ability for sending refer message, or needs terminal to support the calling of two tunnels, and latter approach then needs WEB server to support, it is necessary to set up new network element device in a network.
The content of the invention
The technical problem underlying to be solved of the embodiment of the present invention is, a kind of method for realizing service switching, application server and system are provided, solve in the prior art to raise user terminal and network element device cost using what the terminal or erection WEB server of higher level were brought, poor practicability, the problem of bad adaptability.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of method for realizing service switching, including：
Receive the business triggering message that the service switching terminal in call reports, the message that business triggers message to generate after the triggering push button signalling conversion process according to service switching terminal；
When business triggering message carries default button service feature code, terminal is kept to carry out the media negotiation that calling keeps playback business with the business in call, control media server keeps terminal plays calling to keep prompt tone to business；
The service switching message that the service switching terminal in call reports is received, service switching message is the message generated after being changed according to the switching key signal of service switching terminal；
Service switching message is parsed, obtains service switchover parameter；Service switching and media negotiation are carried out according to service switchover parameter terminal corresponding with the service switchover, and control media server to carry out corresponding playback to terminal corresponding to the service switchover.
In order to solve the above technical problems, the embodiment of the present invention also provides a kind of application server for realizing service switching, including：
Receiving module, message is triggered for receiving the business that the service switching terminal in conversing reports, and receive the service switching message that the service switching terminal in call reports；The message that the business triggers message to generate after the triggering push button signalling conversion process according to the service switching terminal；The service switching message is the message generated after being changed according to the switching key signal of the service switching terminal；
Control module, for when business triggering message carries default button service feature code, keeping terminal to carry out the media negotiation that calling keeps playback business with the business in call, control media server keeps terminal plays calling to keep prompt tone to business；And the service switching message is parsed, obtain service switchover parameter；Service switching and media negotiation are carried out according to service switchover parameter terminal corresponding with the service switchover, and control media server to carry out corresponding playback to terminal corresponding to the service switchover.
In order to solve the above technical problems, the embodiment of the present invention also provides a kind of system for realizing service switching, including：Media server and application server as above；
Application server switches over the media negotiation of business with media server, and media server is used for the media negotiation carried out according to application server terminal corresponding with service switchover, Media Stream is sent to terminal corresponding to service switchover.
The invention discloses a kind of method for realizing service switching,Application server and system,In communication process,The business triggering message that service switching terminal reports can be received,Media server is controlled to keep terminal plays calling to keep prompt tone for business,Then proceed to receive the service switching message that service switching terminal reports,Obtain service switchover parameter,Service switching and media negotiation are carried out with the terminal corresponding to service switchover,Realize the association between two terminals,Re-establish the call between two terminals,Realize in communication process,Button realizes the purpose of corresponding service switching,In the present invention,It make use of existing terminal and network element device,Need to use advanced terminal equivalent to prior art,Or for the scheme of setting WEB server,The present invention can be achieved without being changed to existing terminal and network,So the present invention substantially has more preferable adaptability and practicality,Extend the popularity of application,Save the cost of on-premise network,Improve Consumer's Experience.
Brief description of the drawings
Fig. 1 is a kind of flow chart for method for realizing service switching that the embodiment of the present invention one provides；
Fig. 2 is the flow chart for the method that the another kind that the embodiment of the present invention two provides realizes service switching；
Fig. 3 is a kind of flow chart for method that push button signalling is converted to INFO signals that the embodiment of the present invention two provides；
Fig. 4 is the flow chart for the method that the another kind that the embodiment of the present invention two provides is converted to push button signalling INFO signals；
Fig. 5 is a kind of flow chart for method for realizing blind turn that the embodiment of the present invention two provides；
Fig. 6 is a kind of module diagram for application server for realizing service switching that the embodiment of the present invention three provides；
Fig. 7 is a kind of module diagram for system for realizing service switching that the embodiment of the present invention three provides.
Embodiment
The present invention is described in further detail below by embodiment combination accompanying drawing.
Embodiment one：
The present embodiment proposes a kind of method for realizing service switching, this method, can cause either one in both call sides in communication process, initiates and realizes service switching, completes blind turn.Compared with the existing method for realizing blind rotating function, method of the invention does not need terminal with support special key (button outside *, #, 0-9) and with the ability for sending refer message；The ability of two tunnels calling is supported also without terminal；Blind turn is realized also without using WEB server, avoids the need for newly setting up new network element device naturally.So the method for the present embodiment can be achieved using existing terminal and existing network, extend the popularity of application, save lower deployment cost, improve user experience, with the emergence of 3G, 4G network, CS (Circuit Switched, circuit switching) networks and PS (Packet Switch, packet switch) network fusion so that the present embodiment provide business have boundless development and using space.
Referring to Fig. 1, what the present embodiment provided realizes that the method for service switching includes：
S101, receive the business triggering message that the service switching terminal in call reports, the message that business triggers message to generate after the triggering push button signalling conversion process according to service switching terminal；
S102, when business triggering message carry default button service feature code when, with call business keep terminal carry out calling keep playback business media negotiation, control media server to business keep terminal plays calling keep prompt tone；
S103, the service switching message that the service switching terminal in call reports is received, service switching message is the message generated after being changed according to the switching key signal of service switching terminal；
S104, service switching message is parsed, obtain service switchover parameter；Service switching and media negotiation are carried out according to service switchover parameter terminal corresponding with the service switchover, and control media server to carry out corresponding playback to terminal corresponding to the service switchover.
In the present embodiment, it is the user terminal in current talking that service switching terminal and business, which keep terminal, it is that user initiates calling, answers calling and does the device of other call operations, specifically, user terminal (User Equipment, UE can be) that terminal device, the present embodiment such as C nets or G nets mobile phone, PSTN terminals, IMS terminal are not limited this.
Service switching terminal can be understood as in communication process, actively initiate the terminal of service switchover, you can be interpreted as, in communication process, user's Cao Zuoanjian initiates the terminal of service switching.Business keeps terminal to be interpreted as in same communication process, the terminal with service switching terminal call.Wherein, business keeps terminal to have multiple, for example, in MPTY, terminal is kept except the other-end of service switching terminal can be considered as business.
In the present embodiment, service switching terminal can be calling terminal or terminal called, and the present embodiment is not limited this.
Assuming that operation service switching terminal is user B, that operation service keeps terminal is user A, it is contemplated that in step S101, user B with user A communication process, the button in service switching terminal is triggered, the button that service switching terminal triggers according to user forms triggering push button signalling, includes the button number that user B is specifically triggered in the triggering push button signalling, in the present embodiment, these buttons number include but is not limited to *, the number such as #, 0-9.In general, can be that different service switchovers specifies different service switchover parameter (button number for corresponding to user key-press input), the length and composition of service switchover parameter, can arbitrarily it set, such as, service switchover parameter corresponding to blind transferring operation is arranged to by * 77, when user B with user A communication process, trigger button, input button * 77, then trigger the associative operation of blind transferring operation, service switching terminal can automatically generate switching key signal according to the button number, the switching key signal includes but is not limited to DTMF (Double Tone Multi Frequency, dual-tone multifrequency) signal such as signal.
In actual communication process, the processing to the various message in service switch process is usually to be carried out in application server (Application Server, AS), and AS generally provides underlying services ability, such as：The functions such as Call- Control1, state reporting, ticket generation.In the present embodiment, AS and UE can use Session Initiation Protocol intercommunication by core net, when the service switching terminal in the present embodiment reports the message containing button number, the signal that AS is received necessarily meets the message of the agreements such as Session Initiation Protocol, it is envisioned that the business triggering message of the present embodiment meets the requirement of Session Initiation Protocol, while the information of the button number of user's triggering is carried in the message.It is usually dtmf signal because service switching terminal receives user to trigger the triggering push button signalling obtained after button number, so during S101, certainly exist and the triggering push button signalling of service switching terminal is subjected to conversion process, generate the process of the recognizable message of AS, in the present embodiment, triggering push button signalling can be changed by core net between the terminal and the application server, can also be changed by other network element devices, the present embodiment is not limited this.
, it is necessary to be parsed to business triggering message after business triggering message is received, determine whether carry default button service feature code in business triggering message.Thus, it is possible to determine, in step S101, include button service feature code in the business triggering message finally reported, the button service feature code is converted by triggering push button signalling.It is convenient for the transfer process, the corresponding relation of each triggering push button signalling and button service feature code in the equipment for realizing conversion, can be prestored.
Now, it can determine to need to carry out corresponding service switching processing to service switching terminal, but keep terminal for business, also need to avoid its on-hook, need to maintain it in call state, in consideration of it, needing to keep terminal plays calling to keep prompt tone to the business in call, prompting user A is currently at calling hold mode, without on-hook.The calling keeps the broadcasting of prompt tone to need Media Resource Server (Media Resource Server, abbreviation MRS) cooperation, MRS has the ability for providing voice medium, calling is played to the side of being kept user keep prompt tone such as during calling is kept, commonly abbreviated as media server (Media Server, i.e. MS).
Before media server keeps terminal plays calling to keep prompt tone business, it is thus necessary to determine that business keeps the media information of terminal.Given this, in step s 102, after it is determined that carrying default button service feature code in business triggering message, need to keep terminal to carry out the media negotiation that calling keeps playback business with the business in call, here media negotiation can be understood as the process that acquisition business keeps the media information of terminal, after the media information that the business that obtains keeps terminal, it is possible to control media server MRS to keep terminal UE to play calling to business according to the media information and keep prompt tone.
In general, in practice, the process for controlling above-mentioned media negotiation is AS, and AS is the same as usually used Session Initiation Protocol or MGCP agreements, the protocol type that concrete decision is supported in MRS between MRS.After the completion of media negotiation, UE between MRS be Media Stream transmission, the code/decode format of the specific media bag between UE and MRS, receive and dispatch the information such as port, bandwidth for transmission speed, according to calling when, terminal UE between MRS media negotiation carry out.
During the holding that calling keeps terminal, service switching terminal can carry out reporting for specific service switching message, and the service switching message is the message generated after being changed according to the switching key signal of service switching terminal.With reference to the generating process of above-mentioned business triggering message, it is conceivable that, in the present embodiment, during business keeps the calling of terminal to keep, user B needs key-press input button number again, the button number is usually corresponding with specific business, such as blind transferring operation, and the business that releases keeps business of calling holding of terminal etc..User can input corresponding button number as needed, service switching terminal switching key signal according to corresponding to generating button number, the type of switching key signal includes but is not limited to dtmf signal, afterwards, need to generate service switching message after switching key signal is changed, it is sent to the network element device of processing business handover request, it is however generally that, the network element for handling the service switching message is the AS of service switching terminal.In the present embodiment, business corresponding to service switching message can also be other business in addition to call disestablishment keeps business and blind transferring operation, and the present embodiment is not limited this.
After service switching message is received, service switching message is parsed, service switchover parameter therein can be obtained, here service switchover parameter can be understood as the identification code of a certain specific service switchover, corresponded with the service switchover, so, in step s 102, understanding to service switching message also includes, service switchover parameter is included in service switching message, the service switchover parameter is converted by switching key signal, for the ease of the quick realization of the transfer process, the corresponding relation of switching key signal and service switchover parameter can be prestored in the equipment for realize the conversion.
In S104, after service switchover parameter is got, the content of specific service switchover can be determined, and which the terminal of operation is, afterwards, service switching and media negotiation can be carried out according to service switchover parameter terminal corresponding with the service switchover, control media server carries out corresponding playback to terminal corresponding to the service switchover.It is appreciated that, here control media server carries out corresponding playback to terminal corresponding to the service switchover, it is interpreted as controlling media server to be controlled the tone playing state of terminal corresponding to the service switchover, such as can be the corresponding prompt tone that terminal plays corresponding to service switchover are recorded in advance, or directly play empty sound, such as when terminal corresponding to service switchover is currently at tone playing state, then control media server to the terminal stop the control of playback.
Wherein, service switching message and business triggering message can be session initiation protocol informational message, that is the INFO message of Session Initiation Protocol, these INFO messages are the message that core net will obtain after the switching key signal of service switching terminal and triggering push button signalling conversion respectively.It is envisioned that the button number of user's input corresponding to the triggering of business or service switching might have it is multiple, so corresponding switching key signal and triggering push button signalling also have it is multiple.In addition, in the present embodiment, service switching message and business triggering message can also be the other kinds of message for meeting Session Initiation Protocol, as long as the message of the type can be identified by AS.
In one embodiment, INFO message can once trigger or once switch the message of corresponding all push button signalling conversion generations, and now, core net can all switch to multiple push button signalling in same INFO message, be transmitted to AS.When conversion, core net, in INFO message corresponding to generation, directly can write button service feature code in INFO message according to triggering push button signalling and the corresponding relation of button service feature code；In addition, core net can also only in INFO message write-in triggering push button signalling, as AS according to corresponding to determining the multiple triggering push button signallings parsed button service feature code.Or core net, when generating INFO message, directly by service switchover parameter read-in INFO message, can be sent to AS according to switching key signal and the corresponding relation of service switchover parameter.In addition, multiple switching key signal only can also be transformed into INFO message by core net, be sent to AS, parsed to obtain switching key signal by AS, according to the switching key signal and the incidence relation of service switchover parameter to prestore, the service switchover parameter according to corresponding to obtaining switching key signal.
In another embodiment, INFO message can also be the message generated after the conversion of one-touch signal, now, when user often carries out one-touch, push button signalling can all be converted into an INFO message and be sent to AS, so receiving the equipment side of the INFO, that is AS, also need to the INFO message coalescings of, each secondary push button signalling conversion, and the INFO message of merging is parsed, button number corresponding to multiple button is obtained so that business corresponding to determining is triggering business or service switchover, and specifically which of service switchover business.
Wherein, the content of the service switchover parameter carried in service switching message determines the object of the follow-up terminal and media negotiation for carrying out service switching.
The service switchover parameter of the present embodiment includes but is not limited to call disestablishment and keeps service parameter and blind transferring operation parameter；Call disestablishment service parameter is used to indicate that current business keeps for call disestablishment, and the object of operation is to keep terminal in the business called in keeping.Blind transferring operation parameter is used to indicate that current business is blind transferring operation, keeps the terminal of terminal call to need to be transferred to external connection terminal from business switching terminal with business.
Can be that different service switchovers set different service switchover codes in consideration of it, in order to which different service switchovers is made a distinction it is envisioned that when the species of service switchover has a variety of.In addition, when performing different service switchovers, the terminal of operation is different, such as when performing contact call hold service, the terminal of operation is that business keeps terminal A, when performing blind transferring operation, it is thus necessary to determine that the number of external connection terminal, so in the present embodiment, the terminal can also be identified according to the number of terminal.To sum up, the service switchover parameter of the present embodiment includes but is not limited to service switchover code and/or external connection termination number.When service switchover be call disestablishment keep business when, user input service switching parameter can be a service switchover code such as * 81, now give tacit consent to the service switchover code corresponding to service switchover be call disestablishment keep, reply current call；When service switchover is blind transferring operation, the service switching parameter of user's input can be the number of third terminal, the call of service switching terminal is transferred on third terminal by acquiescence, in addition, user can also input service switching parameter of the service switchover code plus the form of the number of third terminal, service switchover code indicates that service switchover is blind turn, and number shows the call number of the terminal of switching.
When service switchover parameter is that call disestablishment keeps service parameter, in step S104, service switching and media negotiation are carried out according to service switchover parameter terminal corresponding with the service switchover, and media server is controlled to include the corresponding playback of terminal progress corresponding to the service switchover, media server is controlled to stop keeping business terminal plays calling to keep prompt tone, service switching terminal and business are kept into terminal association, control business keeps terminal and service switching terminal to carry out talking state.
When service switchover parameter is blind transferring operation parameter, it is accomplished that, service switching terminal and business is kept into the communication between terminal, are changed into the communication that business keeps terminal and outer terminal.
Step S104 is specifically included, the first step：Service switching terminal is discharged, control media server stops keeping business terminal plays calling to keep prompt tone；
Second step：External connection terminal corresponding to Blind Call Transfer business, keep terminal to carry out media negotiation with external connection terminal and business, and control media server to keep terminal to carry out corresponding playback external connection terminal and business；
3rd step：The off hook signal of external connection terminal is received, control media server stops keeping terminal playback to business, by keeping terminal to carry out media negotiation respectively with external connection terminal and business, external connection terminal and business is kept into terminal association, control it to enter talking state.
Wherein, after discharging service switching terminal, service switching terminal terminates to converse, external connection terminal called corresponding to blind transferring operation.
In second step, after external connection terminal corresponding to Blind Call Transfer business, keep terminal to carry out media negotiation with external connection terminal and business respectively, reach control external connection terminal ring, control media server keeps the purpose of terminal plays ring-back tone to business.
In the third step, external connection terminal off-hook, media server stop keeping terminal to put back to tone business, external connection terminal and business keep terminal to need to be communicated, at this time, it may be necessary to know that external connection terminal and business keep the media information of terminal, specific signal could be transmitted between them.So, terminal is kept to carry out the media information that media negotiation can be understood as AS and transmit other side between external connection terminal and business keep terminal with external connection terminal and business, complete external connection terminal and business keeps the media negotiation of terminal, after external connection terminal and business keep terminal to inform the media information of other side oneself mutually, external connection terminal and business keep entering talking state between terminal, realize blind rotating function.
In the present embodiment, the media information mentioned can be SDP media informations, including IP address, port numbers, media capability such as audio, video, coded format etc..
Using the method for realizing service switching of the present embodiment,It can be realized on the basis of existing terminal and existing network element device,Button realizes service switching in call,Wherein,The business reported according to service switching terminal triggers message,Media server can be controlled to keep terminal plays call hold tone to business,Prompt user should not on-hook,Hereafter,After obtained service switching message after receiving that the service switching terminal in conversing reports according to push button signalling conversion process,Service switchover parameter can be obtained according to the service switching message,It is determined that specific service switchover,Then diagnosis corresponding with service switchover carries out service switching and media negotiation,Media server is controlled to carry out corresponding playback to terminal corresponding to the service switchover,Complete whole handoff procedure,In the method for the present embodiment,The communication of two tunnels and the transmission of refer message are supported without terminal,Without using specific WEB server,So,The method of the present embodiment is applied to existing terminal and existing network element device,Be advantageous to improve the utilization rate of existing terminal and existing network element device,Reduce the cost of service switching,With more practicality,Be advantageous to be lifted the experience sense of user.
Embodiment two：
Referring to Fig. 2, it is assumed that it is user A that business, which keeps the user of terminal, and the user of service switching terminal is user B, and the user of external connection terminal is user C.User B and user A is in call, and user B can be that caller can also be called.The terminal that user A, B, C are used in the present embodiment can be described as user terminal UE (User Equipment), it is that user initiates calling, answers calling and does the device of other call operations, including but not limited to C nets or G nets mobile phone, PSTN terminals, IMS terminal etc..
In the present embodiment, application server AS provides underlying services ability, such as：The functions such as Call- Control1, state reporting, ticket generation.MRS media servers provide voice medium ability, and playing calling to the side of being kept user such as during calling is kept keeps prompt tone.
It is as follows using agreement in specific network element in the present embodiment：
AS uses Session Initiation Protocol intercommunication with the media negotiation between MRS or UE being call conversation, AS and UE by core net, and AS is the same as usually used Session Initiation Protocol or MGCP agreements, the protocol type that concrete decision is supported in MRS between MRS.
UE the code/decode format of UE and the specific media bags of MRS, receives and dispatches port, bandwidth for transmission speed etc. with the transmission between MRS being Media Stream, and during according to calling, terminal UE is carried out with the media negotiation between MRS.
The present embodiment provides another method for realizing service switching, and this method includes：
S201, user B and user A are in call, user B buttons in call, input push button signalling, and service switching terminal reports the message comprising push button signalling.
The message that service switching terminal reports is converted to INFO message and is sent to AS by S202, core net.
It is understood that the message in end side is usually dtmf signal corresponding to push button signalling, so also need to core net is converted into INFO message by the push button signalling of user, AS is reported.The push button signalling as corresponding to AS matching INFO messages is button service feature code such as * 77 specified etc..
Wherein, when core net is switched to the push button signalling on service switching terminal report by dtmf signal during INFO message gives AS.After core net can once collect the button service feature code such as * 77 that one that terminal reports specifies, the INFO message containing the button service feature code specified is to AS in one INFO message body of hair；In addition, core net can also report a button number in terminal, just switched to an INFO message and issue AS, multiple buttons number as corresponding to AS receives a button service feature code, complete the matching of button service feature code specified.
S203, AS keep terminal to put calling user A business and keep prompt tone, and the service switching terminal playback to user B collects the digits.
The sound that the playback collects the digits, which can be actually that empty sound is i.e. Jing Yin, may not be sky sound；Or AS puts calling to A and keeps prompt tone, collecting the digits here refers to the button number for continuing to user B.In the process, the signal for the user B that AS is received actually contains the INFO message of button number, i.e. service switching message in embodiment one, button number corresponding to INFO message, it can be understood as the service switchover parameter in embodiment one.
S204, the INFO message reported to service switching terminal parse, if button number therein, which is the releasing business specified, keeps service code corresponding to the hold mode of terminal, *, then into S205；Otherwise S206 is entered.
S205, AS stop keeping user A business terminal plays calling to keep prompt tone, and user A, B are associated, user A, B is gone successively to talking state；Now, flow terminates.
If S206, the button number parsed is skies or are unsatisfactory for requiring, continue S203；Otherwise, into S207.
It is user the C number (such as 1234567#) of associated terminal or the form (such as * 811234567#) of service code (such as * 81) the plus sige code specified if S207, the button number parsed form；AS discharges user B, and stops playing user A calling holding prompt tone.
Wherein, it is for the ease of being distinguished under such a scene with other business functions that the service code specified is added before number, in another embodiment, can also be not added with the service code specified, i.e. button number comprises only number part, and acquiescence input number is to walk blind turn of tidal stream journey.
S208, AS calling party C, user's C rings, AS give user's A playing RBT simultaneously.
S209, user's C off-hooks, AS stop giving user's A playing RBT, and AS associates user C with user A, realizes user C and user A call；Now, flow terminates.
Referring to Fig. 3, based on the above-mentioned method for realizing service switching, wherein, UE B are interpreted as user B service switching terminal, and the present embodiment also proposes a kind of method that push button signalling is converted to INFO signals, including：
In S301, user A and user B calls；AS sends INFO message to CN, informs that CN needs the key features code * 77 matched.
Wherein, user B is the service-user on AS, can be that caller can also be called, CN is the core net such as IMS network or NGN networks (Core Network, abbreviation CN), in practice, AS, MRS and UE are accesses or anchored in ISM networks or NGN networks.
Wherein, INFO message is as follows, it is to be understood that the message by way of example only, does not limit the content of the present embodiment.
S302, CN send the response 200OK of INFO message to AS.
S303, user B buttons in call, such as press *；Wherein, button number can be the combination of the Any Digit and symbol in *, #, 0-9.
S304, user B continue the button in call, such as press 7.
S305, user B continue the button in call, such as press 7.
The press key contents that S306, CN receive user B are * 77, and it is key features code * 77 to match the press key contents, and CN sends INFO message to AS, contains corresponding contents such as * 77 in INFO message body.
Wherein, in S306, if the button number of user B inputs is the undesirable buttons number such as other guide such as 123#, * 78, then CN will not send INFO message to AS and report, i.e., in the present embodiment, the matching and screening of button number and key features code are completed by CN.Certainly, in another embodiment, user B key set code directly can be converted to INFO message, is sent to AS by CN without matching and screening, and have AS to be matched and screened.Now, step S301 no longer needs.
Wherein, in step S306, the INFO message content that CN is sent is as follows, it is to be understood that the message by way of example only, does not have any restriction to the present embodiment.
S307, AS send the response 200OK of INFO message to CN, if the button number in the INFO message that AS is received is identical with key features code matching, carry out follow-up process.
Referring to Fig. 4, the present embodiment also provides another method that push button signalling is converted to INFO signals, wherein, UE B are interpreted as user B service switching terminal, and this method includes：
In S401, user A and user B calls, user B buttons in call, such as * is pressed.
Wherein, user B is the service-user on AS, can be that caller can also be called, user B button number can be the combination of Any Digit and symbol in *, #, 0-9.
Push button signalling is switched to INFO message and is sent to AS by S402, CN, and the message body of wherein INFO message contains user B press key contents, *.
Wherein, CN is the core net such as IMS network or NGN networks (Core Network, abbreviation CN), and in practice, AS, MRS and UE are accesses or anchored in ISM networks or NGN networks.
INFO message in step S402 is as follows, it is to be understood that the message by way of example only, does not have any restriction to the present embodiment.
S403, AS return to the OK response messages of INFO message to CN.
S404, user B continue the button in call, such as press 7.
Push button signalling is switched to INFO message and is sent to AS by S405, CN, wherein, user B press key contents contained by the message body of INFO message, and 7.
INFO message content in step S405, step S402 message content example is may be referred to, * contents therein are replaced with 7.
The OK that S406, AS return to INFO message to CN is responded.
S407, user B continue the button in call, such as press 7.
Push button signalling is switched to INFO message and is sent to AS by S408, CN, wherein, user B press key contents contained by the message body of INFO message, and 7.
INFO message content in step S408, step S402 message content example is may be referred to, * contents therein are replaced with 7.
S409, AS return to the response 200OK of INFO message to CN, if the button number that AS matches user B according to INFO message is identical with key features code * 77, into follow-up process.
Wherein, if in S409, the push button signalling that AS recognizes user B inputs is other guide such as 123#, * 78 etc., matches less than specified key features code such as * 77, then ignores the corresponding INFO message reported, in addition to OK responses are replied to the INFO message, does not do other processing.
Referring to Fig. 5, the present embodiment also proposes a kind of method for realizing blind transferring operation, wherein, UE A, UE B, UE C, the business for being interpreted as user A respectively keep terminal, user B service switching terminal, user C external connection terminal.Method shown in Fig. 5 includes：
In S501, user A and user B calls, push button signalling is reported AS by user B buttons in call, core net by INFO message.
Wherein, user B can be that caller can also be called, and push button signalling can be understood as DTFM signals corresponding to the button number of user.
The service switching terminal of S502, AS to user B returns to the response 200OK of INFO message.
The button number that S503, AS match in INFO message is the service feature code specified, and calls holding prompt tone as * 77, AS is intended to play user A, then AS sends REINVITE requests to A, carries MRS SDP media informations.
Wherein, SDP media informations include IP address, port numbers, media capability such as audio, video, coded format etc., similarly hereinafter.
S504, user A business keep terminal to return to the response 200OK of REINVITE requests to AS, carry the SDP media informations that business keeps terminal.
S505, AS keep terminal to send ACK confirmation messages to user A business, keep terminal to put calling to business and keep prompt tone.
The service switching terminal playback that S506, AS are intended to user B collects the digits, and the sound can be empty sound, and then AS sends REINVITE requests to service switching terminal, carries MRS SDP media informations.
S507, user B service switching terminal return to the response 200OK of REINVITE requests to AS, carry the SDP media informations of service switching terminal itself.
The service switching terminal of S508, AS to user B sends ACK confirmation messages, service switching terminal playback is collected the digits, the sound content can be empty sound.
S509, user B key-press input users C associated terminal number, AS release user B, to service switching terminal send BYE request.
Wherein, the button number of user B inputs can also be that the service code specified adds the number of associated terminal, i.e. service code adds user C number.
S510, service switching terminal return to the response 200OK of BYE requests, and B terminates to converse.
S511, AS stop putting A calling holding prompt tone, AS calling party C, INVITE requests are sent to associated terminal.
S512, user C associated terminal ring, the response 180ring of INVITE requests is returned to AS.
S513, AS are intended to put back to tone to user A, then keep terminal to send REINVITE requests to business, carry MRS SDP media informations.
S514, business keep terminal to return to the response 200OK of REINVITE requests to AS, carry the SDP media informations that business keeps terminal itself.
S515, AS send ACK confirmation messages to user A, and tone is put back to user A.
S516, user's C off-hooks, external connection terminal return to the response 200OK of INVITE requests to AS, carry the SDP media informations of external connection terminal itself.
S517, AS stop putting back to tone to user A, and it is intended to user A associating bridge joint with user C, then AS keeps terminal to send REINVITE requests to user A business, carries the SDP media informations of user C associated terminal, that is, the SDP media informations in step 515.
S518, user A business keep terminal to return to the response 200OK of REINVITE requests to AS, carry the SDP media informations that business keeps terminal.
S519, AS keep terminal to send ACK confirmation messages to business.
S520, AS send ACK confirmation messages to external connection terminal, carry A SDP media informations, that is, the SDP media informations in step 517, and external connection terminal and business keep terminal to complete media negotiation, into talking state, realize blind turn of function.
Using the method for realizing service switching of the present embodiment, the business such as blind turn can be realized on the basis of existing terminal and network element device, the button number that user inputs can be reported AS by terminal, the terminal that business is related to is controlled according to the button number of input and the corresponding relation of each business by AS, realize the purpose that call or blind turn are kept in call, relative to the terminal that must be used in the prior art with transmission refer signal messages or the terminal with two tunnel call capabilities must be used, or it must be provided with the mode of WEB server, terminal in the present embodiment can be achieved using existing ordinary terminal, be advantageous on sale on the market or realize that calling keeps the function with blind turn in the terminal used, the better adaptability of the present embodiment, practicality is stronger.Meanwhile the present embodiment is also without erection WEB server, it is possible to saves the cost of deployment, is advantageous to lift Consumer's Experience.
Embodiment three：
Referring to Fig. 6, the present embodiment provides a kind of application server for realizing service switching, including：Receiving module 61 and control module 62；
Receiving module 61, message is triggered for receiving the business that the service switching terminal in conversing reports, and receive the service switching message that the service switching terminal in call reports；The message that business triggers message to generate after the triggering push button signalling conversion process according to service switching terminal；Service switching message is the message generated after being changed according to the switching key signal of service switching terminal；
Control module 62, for when business triggering message carries default button service feature code, keeping terminal to carry out the media negotiation that calling keeps playback business with the business in call, control media server keeps terminal plays calling to keep prompt tone to business；And service switching message is parsed, obtain service switchover parameter；Service switching and media negotiation are carried out according to service switchover parameter terminal corresponding with the service switchover, and control media server to carry out corresponding playback to terminal corresponding to the service switchover.
In the present embodiment, it is the user terminal in current talking that service switching terminal and business, which keep terminal, it is that user initiates calling, answers calling and does the device of other call operations, specifically, user terminal (User Equipment, UE can be) that terminal device, the present embodiment such as C nets or G nets mobile phone, PSTN terminals, IMS terminal are not limited this.
Service switching terminal can be understood as in communication process, actively initiate the terminal of service switchover, you can be interpreted as, in communication process, user's Cao Zuoanjian initiates the terminal of service switching.Business keeps terminal to be interpreted as in same communication process, the terminal with service switching terminal call.In the present embodiment, service switching terminal can be calling terminal or terminal called, and the present embodiment is not limited this.
In the present embodiment, the business triggering message and service switching message that receiving module 61 receives all are INFO messages, and are the INFO messages generated after being changed respectively by triggering push button signalling of the core net based on terminal and switching key signal.
Wherein it is possible to understand, it is the converted dtmf signal of button number inputted according to user to trigger push button signalling and switching key signal.What is reacted is the corresponding key set code of user's input.
In the present embodiment, after service switching terminal reporting service triggers message, control module 62 triggers message according to the business, and control media server keeps terminal plays call hold tone to business, prompts user to be currently at call state, avoids user's on-hook.Now, user can in service switching terminal key-press input push button signalling, determine service switchover, in the present embodiment, these buttons number include but is not limited to *, the number such as #, 0-9 and symbol.In general, can be that different service switchovers specifies different service switchover parameter (button number for corresponding to user key-press input), the length and composition of service switchover parameter, can arbitrarily it set, such as, service switchover parameter corresponding to blind transferring operation is arranged to by * 77, when user B with user A communication process, trigger button, input button * 77, then trigger blind turn of operation, service switching terminal can automatically generate switching key signal according to the button number, the switching key signal includes but is not limited to DTMF (Double Tone Multi Frequency, dual-tone multifrequency) signal such as signal.
Service switchover in this implementation includes call disestablishment and keeps business and blind transferring operation, and corresponding service switchover parameter is blind transferring operation parameter and releases call hold service parameter, and when service switchover eucalyptus difference, the effect of controller 62 is also different.
When service switchover parameter is that call disestablishment keeps service parameter, control module 62 is used to control media server to stop keeping business terminal plays calling to keep prompt tone, and service switching terminal and business are kept into terminal association, control it to enter talking state.
Wherein, the detailed process of terminal association is kept to include service switching terminal and business：
Control module 62 obtains the media information of service switching terminal, the message of media information of the terminal transmission with service switching terminal is kept to business, reception business keeps the message with itself media information that terminal is sent, and the media information of business holding terminal is sent to service switching terminal.I.e. control module 62 needs mutually to transmit the media information of other side between service switching terminal and business keep terminal, after service switching terminal and business keep terminal to know the media information of other side, service switching terminal keeps terminal to complete to associate with business, into talking state, can start to converse.
When service switchover parameter is blind transferring operation parameter, control module 62 is used to discharge service switching terminal, and control media server stops keeping business terminal plays calling to keep prompt tone；
External connection terminal corresponding to Blind Call Transfer business, keep terminal to carry out media negotiation with external connection terminal and business, and control media server to keep terminal to carry out corresponding playback external connection terminal and business；
The off hook signal of external connection terminal is received, control media server stops keeping terminal playback to business, by keeping terminal to carry out media negotiation respectively with external connection terminal and business, external connection terminal and business is kept into terminal association, control it to enter talking state.
When handoff parameter is blind transferring operation parameter, control module 62 needs the call of FEFO service switching terminal, that is, discharges service switching terminal, the call then established between business holding terminal and external connection terminal.
After external connection terminal corresponding to control module Blind Call Transfer business, external connection terminal ring, control module 62 keeps terminal to carry out media negotiation with external connection terminal and business, keep terminal to send the media information of the application server of itself to external connection terminal and business by request message, receive external connection terminal and business keeps the media information of terminal.
Media information in the present embodiment can be SDP media informations, including but not limited to IP address, port numbers, media capability such as audio, video, coded format.
Referring to Fig. 7, the present embodiment also provides a kind of system for realizing service switching, including media server 71 and the above-mentioned application server 6 of the present embodiment；
The application server 6 switches over the media negotiation of business with the media server, and media server is used for the media negotiation carried out according to application server terminal corresponding with service switchover, Media Stream is sent to terminal corresponding to service switchover.
Using the application server for realizing service switching of the present embodiment,Control module is after receiving module receives business triggering message,Media server can be controlled to keep terminal plays to keep prompt tone for business,Avoid user's on-hook,After receiving module receives service switching message,Control module carries out service switching and media negotiation according to service switching message terminal corresponding with service switchover,Re-establish the call between two terminals after service switching,Realize in communication process,Button realizes the purpose of service switching,The present embodiment is the triggering that message of the transmission comprising push button signalling realizes business between existing terminal and network element device,The switching of business,For prior art must possess premium terminals or must use WEB server,The present embodiment to terminal and network element device without being improved,With more preferable adaptability,Be advantageous to the popularity of expanded application,The cost of deployment is also saved simultaneously,Improve practicality and Consumer's Experience.
Obviously, those skilled in the art should be understood that, each module or each step of the invention described above can be realized with general computing device, they can be concentrated on single computing device, or it is distributed on the network that multiple computing devices are formed, alternatively, they can be realized with the program code that computing device can perform, so as to, storage medium (ROM/RAM can be stored in, magnetic disc, CD) in performed by computing device, and in some cases, can be with the step shown or described by being performed different from order herein, or they are fabricated to each integrated circuit modules respectively, or the multiple modules or step in them are fabricated to single integrated circuit module to realize.So the present invention is not restricted to any specific hardware and software and combined.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to assert that the specific implementation of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, should all be considered as belonging to protection scope of the present invention.
Claims (10)
1. a kind of method for realizing service switching, including：
The business triggering message that the service switching terminal in call reports is received, the business triggering message is
According to the message generated after the triggering push button signalling conversion process of the service switching terminal；
When business triggering message carries default button service feature code, protected with the business in call
Hold terminal and carry out the media negotiation that calling keeps playback business, control media server keeps terminal to business
Play calling and keep prompt tone；
The service switching message that the service switching terminal in call reports is received, the service switching message is
The message generated after being changed according to the switching key signal of the service switching terminal；
The service switching message is parsed, obtains service switchover parameter；According to the service switchover
Parameter terminal corresponding with the service switchover carries out service switching and media negotiation, and controls media server
Corresponding playback is carried out to terminal corresponding to the service switchover.
2. the method according to claim 1 for realizing service switching, it is characterised in that when described
When service switchover parameter is that call disestablishment keeps service parameter, control media server stops keeping business
Terminal plays calling keeps prompt tone, and service switching terminal and business are kept into terminal association, control it to enter
Enter talking state.
3. the method according to claim 1 for realizing service switching, it is characterised in that when described
When service switchover parameter is blind transferring operation parameter,
Service switching terminal is discharged, control media server stops keeping business terminal plays calling to keep
Prompt tone；
External connection terminal corresponding to Blind Call Transfer business, terminal is kept to carry out media association with external connection terminal and business
Business, and control media server to keep terminal to carry out corresponding playback external connection terminal and business；
The off hook signal of external connection terminal is received, control media server stops keeping terminal playback to business,
By keeping terminal to carry out media negotiation respectively with external connection terminal and business, external connection terminal and business are kept
Terminal association, it is controlled to enter talking state.
4. according to the method for realizing service switching described in claim any one of 1-3, it is characterised in that
The service switchover parameter includes：Service switchover code and/or external connection termination number.
5. according to the method for realizing service switching described in claim any one of 1-3, it is characterised in that
Described business triggering message and service switching message are session initiation protocol informational message, at the beginning of the session
Beginning protocol information message is that core net believes the triggering push button signalling of the service switching terminal and switching key
The message that generates after number conversion.
6. the method according to claim 5 for realizing service switching, it is characterised in that when the meeting
When words initiation protocol informational message is the message generated after one-touch signal is changed, in addition to：By each time
The session initiation protocol informational message of push button signalling conversion merges, to the session initiation protocol information after merging
Message is parsed.
A kind of 7. application server for realizing service switching, it is characterised in that including：
Receiving module, message is triggered for receiving the business that the service switching terminal in conversing reports, and
Receive the service switching message that the service switching terminal in call reports；According to the business triggering message
The message generated after the triggering push button signalling conversion process of the service switching terminal；The service switching disappears
Cease for according to the message generated after the conversion of the switching key signal of the service switching terminal；
Control module, for when the business triggering message carry default button service feature code when, with
Business in call keeps terminal to carry out the media negotiation that calling keeps playback business, controls media server
Terminal plays calling is kept to keep prompt tone to business；And the service switching message is parsed,
Obtain service switchover parameter；Industry is entered according to service switchover parameter terminal corresponding with the service switchover
Business switching and media negotiation, and it is corresponding to control media server to carry out terminal corresponding to the service switchover
Playback.
8. the application server according to claim 7 for realizing service switching, it is characterised in that institute
Control module is stated to be used to, when the service switchover parameter is that call disestablishment keeps service parameter, control media
Server stops keeping business terminal plays calling to keep prompt tone, and service switching terminal and business are protected
Terminal association is held, controls it to enter talking state.
9. the application server according to claim 7 for realizing service switching, it is characterised in that institute
Control module is stated to be used for when the service switchover parameter is blind transferring operation parameter,
Service switching terminal is discharged, control media server stops keeping business terminal plays calling to keep
Prompt tone；
External connection terminal corresponding to Blind Call Transfer business, terminal is kept to carry out media association with external connection terminal and business
Business, and control media server to keep terminal to carry out corresponding playback external connection terminal and business；
The off hook signal of external connection terminal is received, control media server stops keeping terminal playback to business,
By keeping terminal to carry out media negotiation respectively with external connection terminal and business, external connection terminal and business are kept
Terminal association, it is controlled to enter talking state.
A kind of 10. system for realizing service switching, it is characterised in that including：Media server and such as power
Profit requires the application server described in 7-9；The application server switches over industry with the media server
The media negotiation of business, the media server are used for corresponding with service switchover according to the application server
The media negotiation that terminal is carried out, Media Stream is sent to terminal corresponding to service switchover.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610460185.3A CN107529151A (en) | 2016-06-22 | 2016-06-22 | A kind of method for realizing service switching, application server and system |
| PCT/CN2017/088963 WO2017219939A1 (en) | 2016-06-22 | 2017-06-19 | Service switching implementation method, application server, system, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610460185.3A CN107529151A (en) | 2016-06-22 | 2016-06-22 | A kind of method for realizing service switching, application server and system |
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| WO (1) | WO2017219939A1 (en) |
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| CN112751975A (en) * | 2019-10-29 | 2021-05-04 | 中兴通讯股份有限公司 | Playing method, device, storage medium and system of call hold tone |
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| CN115842808A (en) * | 2021-08-04 | 2023-03-24 | 中国移动通信有限公司研究院 | Call interaction method, device, network node and storage medium |
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| WO2017219939A1 (en) | 2017-12-28 |
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