CN100518222C

CN100518222C - Method for realizing controllable call transfer service

Info

Publication number: CN100518222C
Application number: CNB2006100586884A
Authority: CN
Inventors: 苏健
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-03-08
Filing date: 2006-03-08
Publication date: 2009-07-22
Anticipated expiration: 2026-03-08
Also published as: CN1859510A; WO2007101398A1

Abstract

The present invention discloses realizing controllable call transfer (CT) service method. It contains if CT service subscription user signing CT controllable call duration service, then when CT service triggering to start-up timer with predetermined longest speaking time, when timer overtime then forced removing CT service triggered calling; if CT service subscription user not signing above-mentioned service then through Billing and Account system triggered conversation to make judging. The present invented method can control call transfer service duration of a call, monitoring and processing abnormal situation in CT service calling, raising system network maintenance ability.

Description

A kind of method that realizes controlled call transfer service

Technical field

The present invention relates to communication technical field, particularly a kind of controlled calling transfer (CallTransfer, CT) Ye Wu method of realizing.

Background technology

The CT business is a kind of supplementary service in the existing mobile communication business, and the user is must be to mobile communication carrier signatory and activate this business before use.Use the user of CT business to be called main controlling user.The CT business is: if main controlling user has been set up two callings, main controlling user can be incoming call side or exhalation side in each is called out; Perhaps dial second user's number in main controlling user and first user's the calling procedure, described calling procedure can be on or access failure; Main controlling user will have two remote subscribers of the contact of calling out to couple together with it by call release becomes an ordinary call, the calling that this calling is triggered for the CT business, and main controlling user release simultaneously self is connected with these two remote subscribers.Described remote subscriber can be mobile subscriber (MS), also can be telephone network (PSTN) user; Can be the local subscriber, also can be it the office user.

The realization of CT business and ordinary call process are similar, need not special system interaction process.A kind of typical ct findings operation flow that takes place between three users as shown in Figure 1, for ease of statement, these three users are the mobile subscribers, if wherein one or more users are the user of other types, operation flow similarly.This operation flow comprises the steps:

Step 101: main controlling user MS1 and user 2 (MS2) are carrying out calling procedure, and this process can be that MS2 makes a call to MS1, and MS1 dont answer still, or MS1 makes a call and the MS2 dont answer; Or the conversation between MS1 and the MS2 connects, and this conversation can be MS1 initiate or MS2 initiates;

Step 102:MS1 makes a call to user 3 (MS3), promptly sends the message related to calls of the terminal address (TA) that has MS3 to mobile switching centre (MSC);

After step 103:MSC analyzes TA, send initial address message (IAM), enter the Incoming flow process to called MS 3;

Step 104: after called MS 3 rings, MS3 is to the full message in MSC return address (ACM);

Step 105: after called MS 3 was replied, MS3 sent response message (ANM) to MSC, and MS1 and MS3 set up talking link;

Step 106:MS1 on-hook triggers the CT business, sends the order that discharges talking link to base station sub-system (BSS), and the flow process of taking out stitches makes a call;

Step 107:BSS sends the request of removing to MSC, and request discharges occupied resource;

Step 108:MSC sends clear command to BSS, the release of indication BSS and terminal interlock circuit resource;

Step 109:BSS finishes the release of related resource, promptly removes the talking link between MS1 and MS2, MS1 and the MS3, sends to remove to MSC then and finishes message, and the expression related resource discharges to be finished;

Set up the talking link words that work of going forward side by side between step 110:MS2 and the MS3.

If the above MS2 or MS3 become PSTN user, its operation flow remains unchanged.

From above CT operation flow as can be seen, main controlling user with user 2 calling holding state or talking state in, dial the number that is user 3; Connect between user 2 and the user 3 then, and main controlling user discharges and being connected of this two users; Being connected that user 2 and user 3 pass through to be set up conversed, just as the common conversation of directly setting up between user 2 and the user 3.

In this process, present most producers equipment will produce charging bill in the following manner:

1, produce the ticket of MS1 and MS2 conversation for MS1, the calling party is MS1 in the ticket, and the callee is MS2, and the CT traffic flag is arranged;

2, produce the ticket of MS1 and MS3 conversation for MS1, the calling party is MS1 in the ticket, and called is MS3, and the CT traffic flag is arranged;

3, produce the ticket of MS2 and MS1 conversation for MS2, the calling party is MS1 in the ticket, and the callee is MS2;

4, produce the ticket of MS3 and MS1 conversation for MS3, the calling party is MS1 in the ticket, and the callee is MS3.

The mode of the indivedual producer's equipment of possibility or operator's generation ticket and above-mentioned variant slightly, but principle is identical.

Present CT business has following shortcoming:

1, under present CT service billing mode, main controlling user need be user 2 and user's 3 conversation payment telephone expenses, but,, can cause unnecessary economic loss to main controlling user if user 2 and user's 3 air time is long not to the control of user 2 and user's 3 conversations;

When 2, the CT business took place, system also just was used as common conversation to user 2 and user's 3 conversation and handles, and can't take corresponding control approach to the abnormal conditions that wherein may occur.For example, if user 2 and user 3 are Voice Desks, then the conversation between user 2 and the user 3 can be carried out always and can't hang up, and causes the connection between user 2 and the user 3 to discharge, and resource is hung.

Therefore, no matter existing C T business is to main controlling user or concerning operator, and controllability is not strong, is unfavorable for professional using and promoting, and then has influenced user and benefits of operators.

Summary of the invention

In view of this, the objective of the invention is to, propose a kind of method that realizes controlled call transfer service, strengthen control, noting abnormalities when calling out this calling of mandatory dismantling in time or send warning message the connection of setting up in the CT business.

The inventive method comprises the steps:

A, first user with second user's calling procedure in call out the 3rd user, moving exchanging center MSC obtains first user's subscription data, after judging the signatory CT business of first user according to the subscription data that is obtained, further judge whether the contract controlled call duration business of CT of first user, if, execution in step B then; Otherwise, and finish this handling process by existing call transfer service flow processing;

B, when first user hang up trigger the CT business with second user, the 3rd user's calling after, MSC judges whether the calling between second user and the 3rd user has surpassed the longest air time that the controlled call duration business of CT sets, if, execution in step C then; Otherwise, and finish this handling process by existing call transfer service flow processing;

Connection between C, MSC mandatory dismantling second user and the 3rd user stops the CT business.

First user described in the step B further comprises after hanging up and triggering call transfer service with second user, the 3rd user's calling:

B1, MSC start the timer that duration is the longest air time of setting of the controlled call duration business of CT;

Step B is described to be judged as: judge whether the timer that sets is overtime.

Before steps A, further comprise:

First user is in signatory or activation CT business, set the longest air time of the controlled call duration business of CT, and the longest air time that will set be stored in the subscription data of the attaching position register HLR first user CT business, and the reciprocal process by HLR and VLR Visitor Location Register VLR is stored in the subscription data of the first user CT business among the VLR;

The subscription data that MSC described in the steps A obtains first user is: MSC obtains first user's subscription data to VLR.

Preferably, before steps A, further comprise:

AA1, main controlling user send to MSC by terminal and comprise CT service code and the numeric string of the longest air time;

AA2, MSC analyze the numeric string received, learn that main controlling user initiates to set the request of the longest air time of controlled call duration business of CT, and the FEATURE service request of carrying described numeric string to the HLR transmission relevant with main controlling user;

The numeric string in the FEATURE service request is received in AA3, HLR analysis, according to corresponding user profile among the longest air time renewal HLR wherein;

AA4, HLR and VLR carry out will being stored among the VLR the longest air time alternately.

The described further judgement of steps A obtains the controlled call duration business of the first user not signing CT, then further comprises:

A1, when first user hang up trigger the CT business with second user, the 3rd user's calling after, accounting system judges whether the calling between second user and the 3rd user has occurred unusually, if, execution in step A2 then; Otherwise, and finish this handling process by existing call transfer service flow processing;

A2, accounting system send the instruction of calling out between mandatory dismantling second user and the 3rd user to MSC;

Connection between A3, MSC mandatory dismantling second user and the 3rd user stops the CT business.

Preferably, be judged as described in the steps A 1: the Call Data Record CDR that calls out between second user and the 3rd user among the analysis MSC judges whether to occur abnormal conditions according to the result who analyzes.

Described abnormal conditions are any or combination of following situation:

Second user described in the CDR and the 3rd user's number all is voice center or other information desk numbers;

Second user described in the CDR is identical with the 3rd user's number;

Institute has exceeded the conversation time limit of setting in the accounting system ticket call time among the CDR.

Preferably, steps A 2 can further include: accounting system sends warning message.

As can be seen from the above technical solutions: main controlling user preestablishes the longest air time of CT business, and start duration be this timer of the longest air time when professional triggering CT, when the then mandatory dismantling CT business connection of being set up of timer expiry, realized the control of main controlling user, prevented that the air time from longly causing costs loss to main controlling user the CT service call duration; By analyzing the characteristic in the conversation, as CDR, judge whether conversation is abnormal call, and abnormal call carried out mandatory dismantling or send warning message, then further strengthened the network operation ability of system, prevented that abnormal call from causing the situation of resource from suspending, safeguarded benefits of operators.

Description of drawings

Fig. 1 is the flow chart of CT business in the prior art;

Fig. 2 is the business process map of the embodiment of the invention;

Fig. 3 sets the flow chart of the longest air time in the embodiment of the invention.

Embodiment

Core content of the present invention is: before using the CT business, to the abnormal conditions that may occur in the CT business, set measures areput; Carry out in the process in the CT business, whether procuratorial work abnormal conditions occurred, if unusual circumstance is then handled according to predefined measure.

For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is further elaborated below in conjunction with accompanying drawing and specific embodiment.

Present embodiment is an example with the realization flow of code division multiple access (CDMA) network, realizes above-mentioned first kind of execution mode; Realize that for other Operation Networks principle is identical, its realization flow can obtain according to the flow process analogy of present embodiment.

When the signatory CT of user is professional, can select the controlled call duration business of signatory CT, if signatory this business is then set the professional the longest air time of triggering conversation of CT; Reach the longest air time that sets when the professional duration of triggering of CT, think that then the professional calling that triggers of this CT is an abnormal call, mandatory dismantling is somebody's turn to do conversation, stops the CT business.

If the user is the controlled call duration business of signatory CT not, then utilize the monitoring of accounting system realization to the CT business.Accounting system refers to the auxiliary equipment beyond the network master, is used for realizing a certain special service function.In the present embodiment; between MSC and accounting system equipment, set up interface; by the monitoring function of network accounting system realization to the CT business; its basic principle is as follows: MSC can call out for each usually and produce Call Data Record (CDR), comprises information such as caller and called users number, the duration of call and supplementary service sign among the CDR.Accounting system by and MSC between interface obtain CDR, and CDR is analyzed, when finding that analysis result conforms to predefined abnormal conditions, then carry out control corresponding and operate; Described corresponding control operation can be that warning message is called out or produced to mandatory dismantling.

Described abnormal conditions can comprise following several situation:

Situation 1, calling and called all are voice center or other information desk numbers, and this situation can be by analyzing the numbers of calling and called parties identification among the CDR;

Situation 2, numbers of calling and called parties are identical, and this situation can be by analyzing the numbers of calling and called parties identification among the CDR;

Situation 3, air time surpass pre-specified time, should pre-specified time different with the longest air time of setting in the controlled call duration business of above-mentioned CT, be the longest air time that sets in the accounting system, this situation can be by analyzing the air time identification among the CDR;

Situation 4, be not included in other abnormal conditions in above-mentioned three kinds of situations.

The controlled call duration business of CT if main controlling user has been contracted, then comprised the longest air time in the CT service profile of being stored in the attaching position register (HLR), reciprocal process by HLR and VLR Visitor Location Register (VLR), with this longest air time and other CAMEL-Subscription-Information together, be recorded among the VLR.

The implementation procedure of present embodiment is summarized as follows:

When main controlling user with a user's calling procedure in when initiating calling to another user, MSC judges that main controlling user is the contracted user of CT business, after the main controlling user that continues and another user's calling is connected, judge the whether controlled call duration business of signatory CT of main controlling user, if when the main controlling user on-hook triggers CT when professional, MSC starts the timer that duration is the described the longest air time, if timer expiry, the then calling of mandatory dismantling CT business; If the controlled call duration business of the signatory CT of main controlling user, then accounting system by and MSC between interface obtain CDR, and CDR is analyzed, if unusual circumstance then carry out respective handling.

The idiographic flow of present embodiment comprises the steps: as shown in Figure 2

Step 201: user 1 with user 2 calling procedure in, send the message related to calls of the terminal address that has user 3 to MSC.

After step 202:MSC receives message related to calls, obtain the subscription data of user 1 CT business, judge that user 1 is whether signatory and activated the CT business to VLR, if then execution in step 204, otherwise execution in step 203.

Step 203: the call request of refusing user's 1, and withdraw from this flow process.

Step 204:MSC is according to the subscription data that is obtained, and judges the whether controlled call duration business of signatory CT of user 1, if then execution in step 205; Otherwise execution in step 208.

Step 205: user's 1 on-hook triggers CT when professional, and MSC starts the timer that duration is the described the longest air time.

Step 206:MSC judges whether that timer expiry and user 2 and user's 3 conversation is still underway, if then execution in step 207, otherwise execution in step 208.

Connection between step 207:MSC mandatory dismantling user 2 and the user 3 stops the professional and process ends of CT.

Step 208: accounting system judges whether the professional calling that triggers of CT occurs unusually; Described being judged as: accounting system by and MSC between interface obtain CDR, and the CDR content is analyzed, and is judged whether to have occurred abnormal conditions, if execution in step 210 then, execution in step 209 then if not; Described abnormal conditions are any of following situation:

Calling and called all are voice center or other information desk numbers;

Numbers of calling and called parties is identical;

Air time has surpassed the pre-specified time in the accounting system;

Be not included in other abnormal conditions in above-mentioned three kinds of situations.

Step 209: carry out the CT business according to the prior art flow process, withdraw from this flow process after being finished.

Step 210: accounting system sends this call instruction of mandatory dismantling and sends warning message to MSC, goes to step 207.

The longest air time that sets in the controlled call duration business of described CT can be signatory or activate CT when professional the user, sets as the part of the user data of CT business; Also can be the user after activating the CT business, set by terminal before using the CT business.

The interaction flow of the longest air time of the controlled call duration business of terminal CT comprises the steps: as shown in Figure 3

Step 301: the user sends the message of setting the service feature value by terminal to MSC, comprises the service feature sign indicating number (FC) and the longest air time of CT business in this message; The form of this message can be FC+TIMER+SEND, and wherein TIMER is the longest air time that sets, and SEND is for sending instruction.

Step 302:MSC is according to the message of being received, to the HLR of correspondence send the FEATURE service request (Feature Request, FEATREQ); Its specific implementation can for: set in advance the data configuration table in MSC, content is the service feature sign indicating number and concrete professional corresponding relation in the table, and the pairing concrete operations of numeric string of service feature sign indicating number back; MSC receives the string number that terminal sends, and the data configuration table by storage in advance identifies the service feature sign indicating number in this digital code string, further identifies this digital code string and for the user CT request of professional maximum air time is set; Finish above identification back and send the service request that the maximum air time of CT business is set to the HLR of correspondence.

Step 303:HLR is according to the service request received, and the longest air time in user's the CT service profile is set, and returns the response message featreq of service request after setting completed to MSC, and alphabetical here small letter is expressed as the response message of FEATREQ.

After step 304:MSC receives response message from HLR, send the service features acknowledge message to terminal.

Step 305:HLR and VLR carry out alternately, and the set the longest air time of CT business is recorded on the VLR.

The reciprocal process of above-described HLR and VLR can for:

HLR send the qualification indication (Qualification Directive, QUALDIR) message, by the call features indication (Calling Feature Indicator, CFI) parameter is inserted CAMEL-Subscription-Information among the VLR, the signatory CT business of the VLR record duration of taking out stitches; VLR inserts the user data success, returns success qualification indication response message qualdir to HLR, and alphabetical here small letter is expressed as the response message of QUALDIR.

The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims

1, a kind of method that realizes controlled calling transfer CT business is characterized in that this method comprises the steps:

2, method according to claim 1 is characterized in that, first user described in the step B further comprises after hanging up and triggering call transfer service with second user, the 3rd user's calling:

3, method according to claim 1 is characterized in that, further comprises before steps A:

4, according to the described method of claim 1, it is characterized in that, before steps A, further comprise:

According to each described method of claim 1 to 4, it is characterized in that 5, the described further judgement of steps A obtains the controlled call duration business of the first user not signing CT, then further comprises:

6, method according to claim 5 is characterized in that, is judged as described in the steps A 1: the Call Data Record CDR that calls out between second user and the 3rd user among the analysis MSC judges whether to occur abnormal conditions according to the result who analyzes.

7, method according to claim 6 is characterized in that, described abnormal conditions are any or combination of following situation:

Second user described in the CDR is identical with the 3rd user's number;

Institute has exceeded and has sought the conversation time limit of setting in the disappointed system ticket call time among the CDR.

8, method according to claim 5 is characterized in that, steps A 2 further comprises: accounting system sends warning message.