CN1984187B - Method and system for limiting back-call service trigger - Google Patents

Abstract

The method comprises: a) a calling terminal initiates a call to a called terminal satisfying a defined condition; if the call failures, entering step b; b) deciding if state of the called terminal satisfying a defined condition is changed from the state incapable of answering the call to the state capable of answering the call; if yes, then triggering the call-back service, and entering into stepc; otherwise, continuing to execute step b; c) initiating a call to the called terminal bound with the called user again, which satisfies the defined condition.

Description

Professional trigger method of a kind of limiting back-call and system

Technical field

The present invention relates to telecommunication network technology, particularly relate to professional trigger method of a kind of limiting back-call and system.

Background technology

Calling back when busy (CCBS, Completion of Communication sessions to BusySubscriber) and no response callback (CCNR, Completion of Communication on NoReply) are two kinds of common call back services.The calling subscriber calls out the called subscriber, if called subscriber busy, then called network will monitor called subscriber's state, the called subscriber after the free time call back service be triggered, called network notice caller network and further subscriber call, the calling subscriber makes a call once more to the called subscriber, calling and called normal talking behind the called subscriber answer, Here it is CCBS; If called subscriber's no response, then the calling and called network all discharges this calling, in case the called subscriber is idle once more after initiating once to converse, then call back service is triggered, called network notice caller network and further subscriber call, the calling subscriber makes a call once more to the called subscriber, calling and called normal talking behind the called subscriber answer, Here it is CCNR.

Under the situation of called multiple terminals, a plurality of terminals and called subscriber binding is arranged, the called subscriber has a plurality of registration terminals to share single public subscriber identification, promptly general said Subscriber Number in other words.For example, the called subscriber has a voice frequency terminal and a video terminal, externally all uses a number.Prior art can realize the calling subscriber when making a call, and additional qualifications is specified by which terminal responds of called subscriber and called out.For example, the calling subscriber can specify called subscriber's video terminal answering call, and at this moment the other-end of called subscriber except that video terminal just can not received calling.But prior art can't be implemented in the call back service and trigger call back service by the terminal that satisfies qualifications.For example, though the calling subscriber has specified the video terminal answering call when making a call, in CCNR, voice frequency terminal is initiated the once conversation back free time also can trigger call back service.

Summary of the invention

In view of this, main purpose of the present invention is to provide professional trigger method of a kind of limiting back-call and system, so that have only the terminal that satisfies qualifications could trigger call back service.

In order to achieve the above object, the invention provides the professional trigger method of a kind of limiting back-call, this method comprises:

A, calling terminal make a call to the terminal called that satisfies qualifications, execution in step B behind call failure; Wherein, described qualifications comprises the unique identification of terminal called or calling subscriber's preference parameters;

Whether the state that the terminal called of qualifications is satisfied in B, judgement can respond calling from responding to call out to become, if then trigger call back service, and execution in step C, otherwise continue execution in step B;

C, once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call.

Wherein, the described calling terminal of steps A makes a call to the terminal called that satisfies qualifications, and execution in step B comprises behind call failure:

A1, calling terminal send the call request message that carries qualifications to the caller network, the caller network is transmitted to called network with this call request message, called network sends to this call request message in the terminal of binding with the called subscriber, satisfies the terminal called of qualifications;

A2, in the current state of the terminal called that satisfies qualifications for can't respond under the situation of calling, called network notice caller network and calling terminal call failure, execution in step B then.

Wherein, called network is preserved described qualifications in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B comprises from responding to call out to become can respond to call out:

B11, called network to all terminal subscribes SOT state of termination incidents of called subscriber's binding, and send described qualifications to all terminals with called subscriber's binding;

B12, judge self respectively with all terminals of called subscriber binding attribute whether with step B11 in qualifications coupling that called network sent, if coupling, execution in step B13 then, otherwise ignore the SOT state of termination event subscription;

Whether the state of B13, terminal judges self can respond calling by responding to call out to become, if can respond calling by responding to call out to become, then send the event notification message that the expression terminal called can respond calling, otherwise continue execution in step B13 to called network;

B14, called network think that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become after receiving that terminal called can respond the event notification message of calling.

Wherein, described qualifications is the sign of terminal, and called network is preserved described terminal iidentification in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B comprises from responding to call out to become can respond to call out:

B21, called network are subscribed to the SOT state of termination incident to the terminal called of described terminal iidentification correspondence;

B22, the terminal called of receiving the SOT state of termination event subscription judge whether the state of self can respond calling by responding to call out to become, if can respond calling by responding to call out to become, then send the event notification message that the expression terminal called can respond calling, otherwise continue execution in step B22 to called network;

B23, called network think that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become after receiving that terminal called can respond the event notification message of calling.

Wherein, described qualifications is the sign of terminal, and called network is preserved described terminal iidentification in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B from responding to call out to become can respond to call out is:

Called network monitors the message that the terminal corresponding with described sign received and sent, if the message of end of conversation is received or sent to the corresponding terminal of described sign, called network thinks that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become, otherwise thinks that the state of the terminal called that satisfies qualifications can not respond calling from responding to call out to become.

Wherein, described qualifications is calling subscriber's a preference parameters, on called network, preserve the type information of all terminals of binding with the called subscriber, called network is preserved described preference parameters in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B from responding to call out to become can respond to call out is:

B31, called network to all terminal subscribes SOT state of termination incidents of called subscriber's binding;

B32, whether can respond calling by responding to call out to become with the state of each terminal judges self of called subscriber binding, if can respond calling by responding to call out to become, then send the event notification message that the expression terminal called can respond calling, otherwise continue execution in step B32 to called network;

B33, called network are according to the described type information of self preserving, obtain sending the terminal type that described expression terminal called can respond the event notification message of calling, if terminal type that obtains and described calling subscriber's preference parameters coupling, then called network thinks that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become, otherwise called network thinks that the state of the terminal called that satisfies qualifications can not respond calling from responding to call out to become.

Wherein, described qualifications is calling subscriber's a preference parameters, on called network, preserve the type information of all terminals of binding with the called subscriber, called network is preserved described preference parameters in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B from responding to call out to become can respond to call out is:

Called network monitors the message of receiving and sending with all terminals of called subscriber's binding, and according to the described type information of self preserving, received or sent the terminal type of the message of end of conversation, if terminal type that obtains and described calling subscriber's preference parameters coupling, then called network thinks that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become, otherwise called network thinks that the state of the terminal called that satisfies qualifications can not respond calling from responding to call out to become.

Wherein, whether the described judgement of step B is satisfied the state of the terminal called of qualifications and from responding to call out to become can respond to call out is:

B41, called network judge whether the state of arbitrary terminal of binding with the called subscriber can respond calling from responding to call out to become, become execution in step B42 behind the terminal attributive information that can respond calling if then obtain, otherwise to continue execution in step B41 from responding to call out;

B42, called network notice caller network, terminal called can respond calling, and the attribute information of this terminal is sent to the caller network;

B43, caller network are judged the qualifications coupling whether terminal attributive information that called network sends is preserved with the caller network, if coupling then think that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become, otherwise think that the state of the terminal called that satisfies qualifications can not respond calling from responding to call out to become.

Wherein, the described called network of step B42 notice caller network, terminal called can respond calling, and the attribute information of this terminal is sent to the caller network is:

Called network sends the terminal idle message to the caller network, and the attribute information of described terminal is carried at the header field of terminal idle message, and/or, in the message body.

Wherein, described terminal attributive information comprises the sign of terminal, and/or, the type of terminal.

Wherein, the described called network of step B41 judges whether the state of arbitrary terminal of binding with the called subscriber comprises from responding to call out to become can respond to call out:

B4111, called network to all terminal subscribes SOT state of termination incidents of called subscriber's binding;

B4112, whether can respond calling by responding to call out to become with the state of each terminal judges self of called subscriber binding, if can respond calling by responding to call out to become, then send the event notification message that the expression terminal can respond calling, otherwise continue execution in step B4112 to called network;

B4113, called network think that the state with the terminal of called subscriber's binding can respond calling from responding to call out to become after receiving that the expression terminal can respond the event notification message of calling.

Wherein, whether the described called network of step B41 is judged with the state of arbitrary terminal of called subscriber's binding and from responding to call out to become can respond to call out is:

Called network monitors the message of receiving and sending with all terminals of called subscriber's binding, if receive or send the message of end of conversation with any one terminal in all terminals of called subscriber binding, then called network thinks that the state with the terminal of called subscriber's binding can respond calling from responding to call out to become.

Wherein, preserve the type information with all terminals of called subscriber's binding on called network, step B41 is described to be obtained from responding to call out and becomes the terminal attributive information that can respond calling and comprise:

B4121, called network obtain in the terminal of binding with the called subscriber, and state is called out the sign that becomes the terminal that can respond calling by responding;

B4122, called network are according to the type information of being preserved, and the terminal iidentification that is obtained among the step B4121, and the state that further obtains is called out the type that becomes the terminal that can respond calling by responding.

Wherein, steps A further comprises:

Calling terminal is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C11, caller network notice calling terminal, the terminal called that satisfies qualifications can respond calling;

C12, calling terminal send call request message to the caller network, and carry the qualifications that calling terminal is preserved in steps A;

C13, caller network are transmitted to called network with the calling sent by calling terminal request message, and called network sends to this call request message the terminal called that satisfies qualifications in the terminal of binding with the called subscriber.

Wherein, steps A further comprises:

The caller network is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C21, caller network notice calling terminal, the terminal called that satisfies qualifications can respond calling, and the qualifications that the caller network is preserved in steps A sends to calling terminal;

C22, calling terminal send call request message to the caller network, and carry the caller network when the terminal called of notifying calling terminal to satisfy qualifications can respond calling, send to the qualifications of calling terminal;

C23, caller network are transmitted to called network with the calling sent by calling terminal request message, and called network sends to this call request message in the terminal of binding with the called subscriber, satisfy the terminal called of qualifications.

Wherein, steps A further comprises:

The caller network is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C31, caller network notice calling terminal, the terminal called that satisfies qualifications can respond calling;

C32, calling terminal send call request message to the caller network, the caller network judges whether the described call request message that receives carries qualifications, if carry qualifications, then described call request message directly is transmitted to called network, if do not carry qualifications, then the qualifications that the caller network is preserved in steps A adds to and is transmitted to called network in the call request message;

C33, called network send to this call request message in the terminal of binding with the called subscriber, satisfy the terminal called of qualifications.

Wherein, steps A further comprises:

The caller network is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C41, caller network send first call request message to calling terminal;

C42, caller network send second call request message to called network, and carry the qualifications that the caller network is preserved in steps A;

C43, called network send to this call request message the terminal called that satisfies qualifications in the terminal of binding with the called subscriber.

Wherein, steps A further comprises:

Called network is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C51, caller network send first call request message to calling terminal;

C52, caller network send second call request message to called network;

C53, called network send to the call request message of receiving the terminal called that satisfies qualifications in the terminal of binding with the called subscriber according to the qualifications of preserving in steps A.

Wherein, steps A further comprises:

Called network is preserved described qualifications;

The described calling terminal of step C once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C61, caller network notice calling terminal, the terminal called that satisfies qualifications can respond calling;

C62, calling terminal send call request message to the caller network, and the caller network is transmitted to called network with this call request message;

C63, called network judge whether the described call request message that receives carries qualifications, if carry qualifications, the terminal called of the qualifications that then carries in satisfying call request message is transmitted this call request message, if do not carry qualifications, then transmit this call request message to the terminal called that satisfies the qualifications that terminal called preserves in steps A.

Wherein, between steps A and step B, further comprise:

AB, caller network judge whether to carry out if desired, then to call back business request information to called network, otherwise finish current flow process by limiting the call back service that terminal called triggers after receiving the notice of call failure; After called network is received the call back service request message of caller network transmission, execution in step B.

Whether wherein, preestablishing expression needs to carry out by the identifier that limits the call back service that terminal called triggers, and described caller network judges whether that the call back service that need carry out by limiting the terminal called triggering is:

Judge whether that according to described identifier needs carry out by limiting the call back service that terminal called triggers.

Wherein, described caller network judges whether that the call back service that need carry out by limiting the terminal called triggering is:

Caller network and calling terminal are mutual, and judge whether the affirmation message of receiving that calling terminal is sent, if receive, then think and need carry out by limiting the call back service that terminal called triggers, otherwise think and do not need.

Wherein, described caller network judges whether that the call back service that need carry out by limiting the terminal called triggering is:

The caller network judges whether to carry qualifications in the described call request message of steps A, if carry qualifications, then thinks and need carry out call back service by limiting the terminal called triggering, otherwise think and do not need.

Wherein, the caller network carries the described qualifications of steps A in the call back service request message that sends to called network, and steps A B further comprises:

Called network is judged the qualifications that carries in the described call back service request message of preservation.

Wherein, described caller network carrying qualifications in the call back service request message that called network sends is:

The caller network carries qualifications in the header field of call back service request message;

And/or

The caller network carries qualifications in the message body of call back service request message.

Wherein, the described calling terminal of steps A makes a call to the terminal called that satisfies qualifications, and execution in step B comprises behind call failure:

A1, calling terminal send the call request message that carries qualifications to communication network, and communication network sends to this call request message in the terminal of binding with the called subscriber, satisfy the terminal called of qualifications;

A2, in the current state of the terminal called that satisfies qualifications for can't respond under the situation of calling, communication network notice calling terminal call failure, execution in step B then.

In order to achieve the above object, the present invention also provides a kind of limiting back-call the professional system that triggers, comprise: be used for calling terminal, the terminal called that makes a call to the terminal called that satisfies qualifications and be used for setting up the communication network that the calling and called terminal is connected according to the call request of calling terminal, described communication network further comprises:

Callback limits module: be used for monitoring the state of the terminal called that satisfies qualifications when the terminal called that satisfies qualifications can't respond calling, can respond when calling out at the terminal called that satisfies qualifications and notify calling terminal, make a call once more.

Wherein, described qualifications comprises the unique identification of terminal called or calling subscriber's preference parameters.

Adopt technical scheme provided by the present invention, the qualifications that is added when the calling subscriber makes a call is stored in caller network and/or the called network, is come the terminal called that triggers call back service is limited by caller network or called network then.If the terminal called that triggers call back service is limited by called network, so described qualifications is kept in the called network, called network monitors called subscriber's state, have only when with a plurality of terminals of called subscriber binding in to satisfy the terminal of qualifications idle or when initiating that once the conversation back is idle, could trigger call back service, notice caller network and further subscriber call.If the terminal called that triggers call back service is limited by the caller network, so described qualifications is kept in the caller network, called network monitors called subscriber's state, when with a plurality of terminals of called subscriber binding in arbitrary terminal idle or when initiating that once the conversation back is idle, all trigger call back service, notice caller network; And the network based qualifications of caller judges whether to notify calling terminal to continue call back service.Like this, have only in a plurality of terminals of binding, satisfy the terminal free time or the initiation of qualifications and once just can carry out complete call back service flow process during the free time in the conversation back with the called subscriber.

Description of drawings

Fig. 1 is the flow chart of the professional trigger method embodiment one of limiting back-call provided by the present invention;

Fig. 2 is the flow chart of the professional trigger method embodiment two of limiting back-call provided by the present invention;

Fig. 3 is the block diagram of the professional system that triggers of limiting back-call provided by the present invention.

Embodiment

Core concept of the present invention is: preserve the qualifications to the called subscriber answer terminal that is added when the calling subscriber makes a call in caller network and/or called network, come the terminal called that triggers call back service is limited by caller network or called network then, have only the terminal that satisfies described qualifications in a plurality of terminals of called subscriber just can call the call back service flow process.

For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with drawings and the specific embodiments.In order to narrate conveniently, below only the flow process that realizes call back on busy service is described in detail.In addition, the method of realization call back service provided by the present invention preferably is used to adopt Session initiation Protocol (SIP, Session Initiation Protocol) as the internet protocol multi-media sub-system (IMS of professional control protocol, Internet protocol MultimediaSubsystem), still be not limited to be applied to this system.

Fig. 1 is the flow chart of the professional trigger method embodiment one of limiting back-call provided by the present invention.In this embodiment, be responsible for judging by called network whether called subscriber's terminal can trigger complete call back service flow process.

Step 101: calling terminal sends call request message to make a call to the caller network, carries qualifications in the call request message.

Described qualifications can be that the unique identification of terminal called also can be calling subscriber's a preference parameters.Wherein, unique identification is an identifier, is used in the territory at terminal place, use separately or use together with unique definite terminal with public subscriber identification, and this identifier can externally disclose.Preference parameters is the parameter that is used to represent terminal type, for example voice frequency terminal or video terminal, office terminal or private terminal or the like.

Step 102: the caller network is preserved described qualifications, then described call request message is transmitted to called network.

Step 103: called network extracts and preserves qualifications from call request message.

Step 104: called network is checked the terminal called state that satisfies qualifications according to described qualifications, and when terminal called was busy, called network sent Called Busy failure response message to the caller network.

If in the terminal of called subscriber binding, have a plurality of terminals to satisfy qualifications, busy all terminal calleds that satisfy qualifications that refer to of so described terminal called are busy.

Step 105: the caller network receives the Called Busy failure response message that called network sends, and confirms to carry out the call back service by limiting the terminal called triggering, and calls back business request information to called network when needs carry out call back service.

Described affirmation need carry out by the call back service that limits the terminal called triggering three kinds of modes being arranged.First kind of mode is that the calling subscriber gives tacit consent to the call back service that need carry out by limiting the terminal called triggering.The calling subscriber is with the caller network contraction time, to carry out by the call back service that limits the terminal called triggering as the permanent subscription data, the caller network is preserved described permanent subscription data with other user data of calling subscriber, judging whether to carry out when limiting the call back service that terminal called triggers, directly from calling subscriber's user data, read described permanent subscription data, thereby finish judgement.Whether this comes down to each calling subscriber is provided with an identifier, need to carry out by limiting the call back service that terminal called triggers in order to represent this calling subscriber.Can realize this identifier with binary digit, as when this binary digit is 0, the expression calling subscriber need carry out by limiting the call back service that terminal called triggers, when this binary digit is 1, the expression calling subscriber does not need to carry out by limiting the call back service that terminal called triggers, or need judge otherwise whether the calling subscriber needs to carry out the call back service by limiting the terminal called triggering.

The second way is, caller network and calling terminal carry out alternately, and the prompting calling subscriber whether need to select to carry out the call back service by limiting the terminal called triggering, and alternant way can be interacting message or interactive voice.For example, the caller network sends apply for information to calling terminal, and the calling subscriber selects to carry out to send acknowledge message by calling terminal to the caller network by after the call back service that limits the terminal called triggering.

The third mode is, the caller network judges whether the calling subscriber has carried qualifications in call request message when making a call in step 101, if carried qualifications then think and need carry out call back service by limiting the terminal called triggering.

Session Initiation Protocol has defined predetermined (SUBSCRIBE) and circular (NOTIFY) two methods.Wherein the SUBSCRIBE method is used for subscribing to, and the NOTIFY method is used for notice.User or resource use the SUBSCRIBE method to initiate to subscribe to other resources, if the latter has the former interested incident, will use the NOTIFY method to send the state of relevant described incident and the notice of variation to the former.The caller network can use the SUBSCRIBE method to call back business request information to called network.

The caller network is when called network calls back business request information, can in this message, carry with step 101 in identical qualifications, also can not carry qualifications.If carry qualifications, can be carried in the header field of call back service request message, also can be carried in the message body of call back service request message.

Step 106: called network carries out the call back service initialization after receiving the call back service request message of caller network transmission, calls back the service request success message to the caller network then.

Step 107: called network judges whether the terminal called satisfy qualifications is idle, if free time then execution in step 108, otherwise would continue execution in step 107.

For the terminal that triggers call back service is limited, called network need obtain qualifications.If in step 106, carried qualifications in the call back service request message that called network is received, then called network extracts the qualifications that carries in the call back service request message and preserves used qualifications when carrying out callback as follow-up qualification terminal.If in step 106, do not carry qualifications in the call back service request message that called network is received, used qualifications when then called network carries out callback with the qualifications that extracts and preserve in the step 103 as follow-up qualification terminal.

If the qualifications that called network is preserved is the unique identification of terminal called, then called network at first needs to determine according to the unique identification of terminal called the internal indicator of terminal called.Internal indicator also is an identifier, is used in the territory at terminal place, use separately or and public identify use together with unique and determine a terminal, and the user ID that can both discern of the territory at terminal place and terminal equipment, and can not be open the outside.The internal indicator of terminal can be identical with its unique identification, also can be inequality with its unique identification.After obtaining the internal indicator of terminal called, called network adopts in following three kinds of modes any one to judge whether the terminal called that satisfies qualifications is idle:

First kind is under the uniquely identified situation of terminal called at qualifications, called network judges whether idle mode is the terminal called that satisfies qualifications, called network is subscribed to the SOT state of termination incident to the terminal called of described internal indicator correspondence, and the terminal of described internal indicator correspondence is notified called network at one's leisure.For example, called network uses the SUBSCRIBE method to send subscribe message to terminal called, become idle incident to subscribe to terminal called, like this when terminal called transfers the free time to by doing, will use the NOTIFY method to send the event notification message of expression terminal called free time to called network, then called network is thought the terminal called free time of satisfying qualifications.

Second kind is under the uniquely identified situation of terminal called at qualifications, called network judges whether idle mode is the terminal called that satisfies qualifications, called network to all terminal subscribes SOT state of termination incidents of called subscriber binding, carry the internal indicator of terminal called in the subscribe message.After each terminal is received subscribe message, whether compare internal indicator entrained in the subscribe message consistent with the internal indicator of self, have only the consistent terminal of internal indicator entrained in self internal indicator and the subscribe message just can finish subscription operation, other-end can not be finished subscription operation.Subscribe to successful terminal by busy transfer the free time to after, send the event notification message of expression terminal called state free time to called network, then called network is thought the terminal called free time of satisfying qualifications.Described internal indicator can be carried in the header field of subscribe message, also can be carried in the message body of subscribe message.

The third is under the uniquely identified situation of terminal called at qualifications, called network judges whether idle mode is the terminal called that satisfies qualifications, called network monitors the message that the pairing terminal of described unique identification is received or sent, if the terminal of described unique identification correspondence is received or when sending the message of end of conversation, called network is thought the terminal called free time of satisfying qualifications.

If the qualifications that called network is preserved is calling subscriber's a preference parameters, then whether the called network terminal called that adopts in following three kinds of modes any one to judge to satisfy qualifications is idle:

First kind is that called network judges whether idle mode is the terminal called that satisfies qualifications under calling subscriber's the situation of preference parameters at qualifications, called network to all terminal subscribes SOT state of termination incidents of called subscriber's binding.After terminal transfers the free time to by doing, send the event notification message of expression terminal called state free time to called network.Because the type information of terminal has been notified to called network by registration message at endpoint registration during to called network, and be kept in the called network, therefore called network is behind the event notification message of receiving the terminal called free time, determine terminal type according to informed source, and calling subscriber's preference parameters that described terminal type and called network are preserved is compared, if be complementary then think the terminal called free time of satisfying qualifications.

Second kind is under calling subscriber's the situation of preference parameters at qualifications, called network judges whether idle mode is the terminal called that satisfies qualifications, called network to all terminal subscribes SOT state of termination incidents of called subscriber binding, carry described calling subscriber's preference parameters in the subscribe message.After each terminal is received subscribe message, whether compare calling subscriber's preference parameters entrained in the subscribe message consistent with the type of self, have only the consistent terminal of calling subscriber's preference parameters entrained in self type and the subscribe message just can finish subscription operation, other-end can not be finished subscription operation.Subscribe to successful terminal by busy transfer the free time to after, send the event notification message of expression terminal called state free time to called network, then called network is thought the terminal called free time of satisfying qualifications.Described calling subscriber's preference parameters can be carried in the header field of subscribe message, also can be carried in the message body of subscribe message.

The third is under calling subscriber's the situation of preference parameters at qualifications, and called network judges whether idle mode is the terminal called that satisfies qualifications, and called network monitors the message of receiving and sending with all terminals of called subscriber's binding.Receive with in all terminals of called subscriber binding any one or when sending the message of end of conversation, called network determines to receive or send the type of the terminal of end of conversation message, calling subscriber's preference parameters that described terminal type and called network are preserved is compared then, if consistent then think the terminal called free time of satisfying qualifications.The type information of described terminal is to be notified to called network by registration message at endpoint registration during to called network, and is kept in the called network.

Step 108: called network notice caller network, terminal called transfers the free time to by doing.

Called network can use NOTIFY method notice caller network.

Step 109: caller network notice calling terminal, terminal called free time.

The caller network can use the REFER method notice calling terminal terminal called free time that defines among the SIP.

Whether preserve the structure of qualifications and caller network self when the network based calling terminal of caller makes a call in step 101, whether decision need carry the qualifications that the caller network is preserved in step 102 in the notification message of notice calling terminal terminal called free time.Wherein, whether preserving the information that call out to limit when making a call in step 101 about calling terminal, is when calling terminal is registered to the caller network, informs the caller network and is kept on the caller network by registration message; Also can arrange by other modes by caller network and calling terminal.

Limit if preserve when calling terminal makes a call in step 101 to call out, the caller network does not carry qualifications in the notification message of notice calling terminal terminal called free time so; If do not preserve qualifications when calling terminal makes a call in step 101, the caller network carries qualifications in the notification message of notice calling terminal terminal called free time so.

Carry in notification message at the caller network under the situation of qualifications, qualifications can be carried in the header field of notification message, also can be carried in the message body of notification message.

Step 110: calling terminal makes a call to terminal called once more.

Calling terminal makes a call to terminal called, is actually to the caller network and sends call request message.If when calling terminal makes a call, preserved qualifications in step 101, this moment, calling terminal sent call request message when making a call to the caller network once more so, carried the described qualifications of being preserved by calling terminal in call request message.The caller network directly is transmitted to called network with this call request message.

When if calling terminal makes a call in step 101, do not preserve qualifications, the caller network is carried at qualifications in step 110 and has sent to calling terminal in the notification message so.Calling terminal sends call request message when making a call to the caller network once more, carries the qualifications that extracts from notification message in call request message.The caller network directly is transmitted to called network with this call request message.

Step 111: called network sends success response message to the caller network.

Because the terminal called free time, then called network sends success response message to the caller network.

Step 112: carry out subsequent step and set up being connected of calling terminal and the terminal called that satisfies qualifications.

Step 113: the unit of being responsible for call back service in caller network and the called network finishes call back service, discharges the required resource of call back service.

As first kind of replacement scheme, in step 109, the caller network can not judge whether preserve qualifications when calling terminal makes a call in step 101, and carries qualifications in sending to the notification message of calling terminal without exception.And in step 110, calling terminal is when making a call once more, if calling terminal self has been preserved qualifications, so just the qualifications that calling terminal self is preserved is carried in the call request message; If calling terminal self is not preserved qualifications, so just the qualifications in the described notification message is carried in the call request message.

As second kind of replacement scheme, in step 109, the caller network can not judge whether preserve qualifications when calling terminal makes a call in step 101, and does not carry qualifications in sending to the notification message of calling terminal without exception.In step 110, calling terminal is when making a call once more, if calling terminal self has been preserved qualifications, so just the qualifications that calling terminal self is preserved is carried in the call request message; If calling terminal self is not preserved qualifications, in call request message, just do not carry restrictive condition so.After the caller network is received the call request message that calling terminal sends, find not carry in this message qualifications, the qualifications of being preserved by the caller network in step 102 on then adding in the call request message of receiving is transmitted to called network with amended call request message then.

As the third replacement scheme, in step 109, the caller network can not judge whether preserve qualifications when calling terminal makes a call in step 101, and does not carry qualifications in sending to the notification message of calling terminal without exception.In step 110, the caller network also only is transmitted to called network with the call request message that calling terminal sent.Called network judges in the call request message that the caller network sends whether carry qualifications, if carry, then the terminal called of entrained qualifications sends call request message in satisfying call request message; If do not carry, then send call request message to the terminal called that satisfies the qualifications that called network preserved in step 103.

As the 4th kind of replacement scheme, can omited steps 109, promptly the caller network is not notified the calling terminal terminal called free time.But in step 110, send call request message to calling terminal and called network respectively by the caller network.If send in the call request message of called network at the caller network, carried the qualifications that the caller network is preserved in step 102, the terminal called of called network entrained qualifications in satisfying call request message sends call request message so; If send in the call request message of called network at the caller network, do not carry the qualifications that the caller network is preserved in step 102, the qualifications preserved according to called network in the step 103 of called network sends call request message to the terminal called that satisfies qualifications so.

Fig. 2 is the flow chart of the professional trigger method embodiment two of limiting back-call provided by the present invention.In this embodiment, be responsible for judging by the caller network whether called subscriber's terminal can trigger complete call back service flow process.

Step 201 is substantially the same to step 106 to step 206 and step 101, and difference is that in step 203, called network can be preserved qualifications, also can not preserve qualifications.

Step 207: whether called network is judged with arbitrary terminal of called subscriber's binding idle, if free time then execution in step 208, otherwise would continue execution in step 207.

First kind of realization called network judges whether idle mode is arbitrary terminal of binding with the called subscriber, called network to all terminal subscribes SOT state of termination incidents of called subscriber binding, after any one terminal transfers the free time to by doing, send the event notification message of expression SOT state of termination free time to called network.After called network is received the event notification message of the expression SOT state of termination free time that the terminal of any one and called subscriber binding is sent, think the terminal free time that sends described event notification message, execution in step 208.

Whether idle mode is arbitrary terminal of the judgement of second kind of realization called network and called subscriber's binding, the message that all terminals that called network supervision and called subscriber bind are received and sent.Called network finds that in all terminals with called subscriber's binding any one received or when sending the message of end of conversation, promptly thinks arbitrary terminal free time with called subscriber's binding, execution in step 208.

Step 208: called network sends the terminal idle message to the caller network, carries the attribute information of non-occupied terminal in the message.

Described attribute information is the unique identification of non-occupied terminal, and/or, the type information of non-occupied terminal.Because called network can the identification terminal idle message by which terminal send, also can discern end of conversation message and by which terminal receive or send, so called network can obtain the unique identification of non-occupied terminal.Again because the type information of terminal has been notified to called network by registration message at endpoint registration during to called network, and be kept in the called network, so called network can determine to receive or send the type of the terminal of end of conversation message.

Attribute information can be carried in the header field of terminal idle message, also can be carried in the message body of terminal idle message.If carry the unique identification and the type information of non-occupied terminal simultaneously, unique identification can be carried in the header field so, type information is carried in the message body; Perhaps type information is carried in the header field, unique identification is carried in the message body; Unique identification and type information all can certainly be carried in the header field, perhaps all be carried in the message body.

Called network can use the NOTIFY method to send the terminal idle message to the caller network.

Step 209: the non-occupied terminal attribute in the network based terminal idle message of caller, judge whether idle terminal called satisfies qualifications, if satisfy qualifications, then execution in step 210, otherwise return execution in step 207.

The caller network has been preserved qualifications in step 202, so the caller network compares the non-occupied terminal attribute in the terminal idle message with the qualifications of self preserving, if unanimity then think that described non-occupied terminal satisfies qualifications.

Step 210 is identical to step 113 with step 109 to step 214, and replacement scheme is also identical.

In above two embodiment, lay respectively at the caller network and called network is that example has illustrated the specific embodiment of the present invention with calling terminal and terminal called.In actual applications, calling terminal and terminal called also may be arranged in same communication network, in this case, above-mentioned caller network and called network should be regarded as in the consolidated network, be carried out mutual physics or logical ne with calling terminal and terminal called respectively.

Need to prove, in above narration, only narrated and realized in the flow process of call back service, the key step relevant especially with inventive point of the present invention.In actual applications, between calling terminal, caller network, called network and the terminal called, between each Business Entity of caller network, between each Business Entity of called network, also need other interactive step.Because these steps are not relevant especially with inventive point of the present invention, do not repeat them here.

Please refer to Fig. 3, Fig. 3 is the professional system block diagram that triggers of limiting back-call provided by the invention.This system comprises:

Calling terminal: be used to initiate calling to the terminal called that meets qualifications.

Terminal called: be used to respond the calling of calling terminal.

Communication network: the connection between the terminal called that is used to set up calling terminal and satisfy qualifications; Also be used for when the terminal called that satisfies qualifications can't respond calling, monitoring the state of the terminal called that satisfies qualifications, when the terminal called that satisfies qualifications can respond calling, trigger call back service.

Wherein, communication network can be further divided into communication building block and callback qualification module.

Communication building block: be used for call request, set up the connection between calling terminal and the terminal called according to calling terminal.

Callback limits module: be used for monitoring the state of the terminal called that satisfies qualifications when the terminal called that satisfies qualifications can't respond calling, can respond when calling out at the terminal called that satisfies qualifications and notify calling terminal, make a call once more.The function of this module can be distributed in the different entities of network, is finished jointly by a plurality of entities.

In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (27)

1. the professional trigger method of a limiting back-call is characterized in that this method comprises:

A, calling terminal make a call to the terminal called that satisfies qualifications, execution in step B behind call failure; Wherein, described qualifications comprises the unique identification of terminal called or calling subscriber's preference parameters;

Whether the state that the terminal called of qualifications is satisfied in B, judgement can respond calling from responding to call out to become, if then trigger call back service, and execution in step C, otherwise continue execution in step B;

C, once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call.

2. the professional trigger method of limiting back-call according to claim 1 is characterized in that the described calling terminal of steps A makes a call to the terminal called that satisfies qualifications, and execution in step B comprises behind call failure:

A1, calling terminal send the call request message that carries qualifications to the caller network, the caller network is transmitted to called network with this call request message, called network sends to this call request message in the terminal of binding with the called subscriber, satisfies the terminal called of qualifications;

A2, in the current state of the terminal called that satisfies qualifications for can't respond under the situation of calling, called network notice caller network and calling terminal call failure, execution in step B then.

3. the professional trigger method of limiting back-call according to claim 2, it is characterized in that, called network is preserved described qualifications in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B comprises from responding to call out to become can respond to call out:

B11, called network to all terminal subscribes SOT state of termination incidents of called subscriber's binding, and send described qualifications to all terminals with called subscriber's binding;

B12, judge self respectively with all terminals of called subscriber binding attribute whether with step B11 in qualifications coupling that called network sent, if coupling, execution in step B13 then, otherwise ignore the SOT state of termination event subscription;

Whether the state of B13, terminal judges self can respond calling by responding to call out to become, if can respond calling by responding to call out to become, then send the event notification message that the expression terminal called can respond calling, otherwise continue execution in step B13 to called network;

B14, called network think that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become after receiving that terminal called can respond the event notification message of calling.

4. the professional trigger method of limiting back-call according to claim 2, it is characterized in that, described qualifications is the sign of terminal, called network is preserved described terminal iidentification in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B comprises from responding to call out to become can respond to call out:

B21, called network are subscribed to the SOT state of termination incident to the terminal called of described terminal iidentification correspondence;

B22, the terminal called of receiving the SOT state of termination event subscription judge whether the state of self can respond calling by responding to call out to become, if can respond calling by responding to call out to become, then send the event notification message that the expression terminal called can respond calling, otherwise continue execution in step B22 to called network;

B23, called network think that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become after receiving that terminal called can respond the event notification message of calling.

5. the professional trigger method of limiting back-call according to claim 2, it is characterized in that, described qualifications is the sign of terminal, called network is preserved described terminal iidentification in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B from responding to call out to become can respond to call out is:

Called network monitors the message that the terminal corresponding with described sign received and sent, if the message of end of conversation is received or sent to the corresponding terminal of described sign, called network thinks that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become, otherwise thinks that the state of the terminal called that satisfies qualifications can not respond calling from responding to call out to become.

6. the professional trigger method of limiting back-call according to claim 2, it is characterized in that, described qualifications is calling subscriber's a preference parameters, on called network, preserve the type information of all terminals of binding with the called subscriber, called network is preserved described preference parameters in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B from responding to call out to become can respond to call out is:

B31, called network to all terminal subscribes SOT state of termination incidents of called subscriber's binding;

B32, whether can respond calling by responding to call out to become with the state of each terminal judges self of called subscriber binding, if can respond calling by responding to call out to become, then send the event notification message that the expression terminal called can respond calling, otherwise continue execution in step B32 to called network;

B33, called network are according to the described type information of self preserving, obtain sending the terminal type that described expression terminal called can respond the event notification message of calling, if terminal type that obtains and described calling subscriber's preference parameters coupling, then called network thinks that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become, otherwise called network thinks that the state of the terminal called that satisfies qualifications can not respond calling from responding to call out to become.

7. the professional trigger method of limiting back-call according to claim 2, it is characterized in that, described qualifications is calling subscriber's a preference parameters, on called network, preserve the type information of all terminals of binding with the called subscriber, called network is preserved described preference parameters in steps A, and whether the state that the terminal called of qualifications is satisfied in the described judgement of step B from responding to call out to become can respond to call out is:

Called network monitors the message of receiving and sending with all terminals of called subscriber's binding, and according to the described type information of self preserving, received or sent the terminal type of the message of end of conversation, if terminal type that obtains and described calling subscriber's preference parameters coupling, then called network thinks that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become, otherwise called network thinks that the state of the terminal called that satisfies qualifications can not respond calling from responding to call out to become.

8. the professional trigger method of limiting back-call according to claim 2 is characterized in that, whether the state that the terminal called of qualifications is satisfied in the described judgement of step B from responding to call out to become can respond to call out is:

B41, called network judge whether the state of arbitrary terminal of binding with the called subscriber can respond calling from responding to call out to become, become execution in step B42 behind the terminal attributive information that can respond calling if then obtain, otherwise to continue execution in step B41 from responding to call out;

B42, called network notice caller network, terminal called can respond calling, and the attribute information of this terminal is sent to the caller network;

B43, caller network are judged the qualifications coupling whether terminal attributive information that called network sends is preserved with the caller network, if coupling then think that the state of the terminal called that satisfies qualifications can respond calling from responding to call out to become, otherwise think that the state of the terminal called that satisfies qualifications can not respond calling from responding to call out to become.

9. the professional trigger method of limiting back-call according to claim 8 is characterized in that, the described called network notice of step B42 caller network, and terminal called can respond calling, and the attribute information of this terminal is sent to the caller network is:

Called network sends the terminal idle message to the caller network, and the attribute information of described terminal is carried at the header field of terminal idle message, and/or, in the message body.

10. the professional trigger method of limiting back-call according to claim 8 is characterized in that described terminal attributive information comprises the sign of terminal, and/or, the type of terminal.

11. the professional trigger method of limiting back-call according to claim 8 is characterized in that, the described called network of step B41 judges whether the state of arbitrary terminal of binding with the called subscriber comprises from responding to call out to become can respond to call out:

B4111, called network to all terminal subscribes SOT state of termination incidents of called subscriber's binding;

B4112, whether can respond calling by responding to call out to become with the state of each terminal judges self of called subscriber binding, if can respond calling by responding to call out to become, then send the event notification message that the expression terminal can respond calling, otherwise continue execution in step B4112 to called network;

B4113, called network think that the state with the terminal of called subscriber's binding can respond calling from responding to call out to become after receiving that the expression terminal can respond the event notification message of calling.

12. the professional trigger method of limiting back-call according to claim 8 is characterized in that, whether the described called network of step B41 is judged with the state of arbitrary terminal of called subscriber's binding and from responding to call out to become can respond to call out is:

Called network monitors the message of receiving and sending with all terminals of called subscriber's binding, if receive or send the message of end of conversation with any one terminal in all terminals of called subscriber binding, then called network thinks that the state with the terminal of called subscriber's binding can respond calling from responding to call out to become.

13. according to Claim 8 to the professional trigger method of 12 any described limiting back-calls, it is characterized in that, preserve the type information with all terminals of called subscriber's binding on called network, step B41 is described to be obtained from responding to call out and becomes the terminal attributive information that can respond calling and comprise:

B4121, called network obtain in the terminal of binding with the called subscriber, and state is called out the sign that becomes the terminal that can respond calling by responding;

B4122, called network are according to the type information of being preserved, and the terminal iidentification that is obtained among the step B4121, and the state that further obtains is called out the type that becomes the terminal that can respond calling by responding.

14. the professional trigger method of limiting back-call according to claim 2 is characterized in that steps A further comprises:

Calling terminal is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C11, caller network notice calling terminal, the terminal called that satisfies qualifications can respond calling;

C12, calling terminal send call request message to the caller network, and carry the qualifications that calling terminal is preserved in steps A;

C13, caller network are transmitted to called network with the calling sent by calling terminal request message, and called network sends to this call request message the terminal called that satisfies qualifications in the terminal of binding with the called subscriber.

15. the professional trigger method of limiting back-call according to claim 2 is characterized in that steps A further comprises:

The caller network is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C21, caller network notice calling terminal, the terminal called that satisfies qualifications can respond calling, and the qualifications that the caller network is preserved in steps A sends to calling terminal;

C22, calling terminal send call request message to the caller network, and carry the caller network when the terminal called of notifying calling terminal to satisfy qualifications can respond calling, send to the qualifications of calling terminal;

C23, caller network are transmitted to called network with the calling sent by calling terminal request message, and called network sends to this call request message in the terminal of binding with the called subscriber, satisfy the terminal called of qualifications.

16. the professional trigger method of limiting back-call according to claim 2 is characterized in that steps A further comprises:

The caller network is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C31, caller network notice calling terminal, the terminal called that satisfies qualifications can respond calling;

C32, calling terminal send call request message to the caller network, the caller network judges whether the described call request message that receives carries qualifications, if carry qualifications, then described call request message directly is transmitted to called network, if do not carry qualifications, then the qualifications that the caller network is preserved in steps A adds to and is transmitted to called network in the call request message;

C33, called network send to this call request message in the terminal of binding with the called subscriber, satisfy the terminal called of qualifications.

17. the professional trigger method of limiting back-call according to claim 2 is characterized in that steps A further comprises:

The caller network is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C41, caller network send first call request message to calling terminal;

C42, caller network send second call request message to called network, and carry the qualifications that the caller network is preserved in steps A;

C43, called network send to this call request message the terminal called that satisfies qualifications in the terminal of binding with the called subscriber.

18. the professional trigger method of limiting back-call according to claim 2 is characterized in that steps A further comprises:

Called network is preserved described qualifications;

Step C described once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C51, caller network send first call request message to calling terminal;

C52, caller network send second call request message to called network;

C53, called network send to the call request message of receiving the terminal called that satisfies qualifications in the terminal of binding with the called subscriber according to the qualifications of preserving in steps A.

19. the professional trigger method of limiting back-call according to claim 2 is characterized in that steps A further comprises:

Called network is preserved described qualifications;

The described calling terminal of step C once more to the terminal of called subscriber binding in, the terminal called that satisfies qualifications makes a call and comprises:

C61, caller network notice calling terminal, the terminal called that satisfies qualifications can respond calling;

C62, calling terminal send call request message to the caller network, and the caller network is transmitted to called network with this call request message;

C63, called network judge whether the described call request message that receives carries qualifications, if carry qualifications, the terminal called of the qualifications that then carries in satisfying call request message is transmitted this call request message, if do not carry qualifications, then transmit this call request message to the terminal called that satisfies the qualifications that terminal called preserves in steps A.

20. the professional trigger method of limiting back-call according to claim 2 is characterized in that, further comprises between steps A and step B:

AB, caller network judge whether to carry out if desired, then to call back business request information to called network, otherwise finish current flow process by limiting the call back service that terminal called triggers after receiving the notice of call failure; After called network is received the call back service request message of caller network transmission, execution in step B.

21. the professional trigger method of limiting back-call according to claim 20, it is characterized in that, whether need carry out by the identifier that limit call back service that terminal called trigger, described caller network judges whether that the call back service that need carry out by limiting the terminal called triggering is if preestablishing expression:

Judge whether that according to described identifier needs carry out by limiting the call back service that terminal called triggers.

22. the professional trigger method of limiting back-call according to claim 20 is characterized in that, described caller network judges whether that the call back service that need carry out by limiting the terminal called triggering is:

Caller network and calling terminal are mutual, and judge whether the affirmation message of receiving that calling terminal is sent, if receive, then think and need carry out by limiting the call back service that terminal called triggers, otherwise think and do not need.

23. the professional trigger method of limiting back-call according to claim 20 is characterized in that, described caller network judges whether that the call back service that need carry out by limiting the terminal called triggering is:

The caller network judges whether to carry qualifications in the described call request message of steps A, if carry qualifications, then thinks and need carry out call back service by limiting the terminal called triggering, otherwise think and do not need.

24. the professional trigger method of limiting back-call according to claim 20 is characterized in that the caller network carries the described qualifications of steps A in the call back service request message that sends to called network, steps A B further comprises:

Called network is judged the qualifications that carries in the described call back service request message of preservation.

25. the professional trigger method of limiting back-call according to claim 24 is characterized in that, described caller network carries qualifications and is in the call back service request message that sends to called network:

The caller network carries qualifications in the header field of call back service request message;

And/or

The caller network carries qualifications in the message body of call back service request message.

26. the professional trigger method of limiting back-call according to claim 1 is characterized in that the described calling terminal of steps A makes a call to the terminal called that satisfies qualifications, execution in step B comprises behind call failure:

A1, calling terminal send the call request message that carries qualifications to communication network, and communication network sends to this call request message in the terminal of binding with the called subscriber, satisfy the terminal called of qualifications;

A2, in the current state of the terminal called that satisfies qualifications for can't respond under the situation of calling, communication network notice calling terminal call failure, execution in step B then.

27. professional system that triggers of limiting back-call, comprise: be used for calling terminal, the terminal called that makes a call to the terminal called that satisfies qualifications and be used for setting up the communication network that the calling and called terminal is connected according to the call request of calling terminal, it is characterized in that described communication network further comprises:

Callback limits module: be used for monitoring the state of the terminal called that satisfies qualifications when the terminal called that satisfies qualifications can't respond calling, can respond when calling out at the terminal called that satisfies qualifications and notify calling terminal, make a call once more;

Wherein, described qualifications comprises the unique identification of terminal called or calling subscriber's preference parameters.

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