CN100459809C - Calling continuing method and system based on intelligent network control - Google Patents

Abstract

A connection method based on intelligent network controlled call includes triggering communication service to intelligent network service platform by soft interchange device (SID) according to service settings of terminal unit corresponding to called number, connecting call to terminal unit bound with called number by SID according to logon information of terminal unit, down-sending connection message containing a calling number corresponding to calling end to SID by intelligent network service platform if said call is failure and connecting call to terminal unit corresponding to called number by SID according to said connection message. The connection system for realizing said method is also disclosed.

Description

Call connection method and system based on intelligent network control

technical field

The invention relates to the technical field of call connection control, in particular to an intelligent network-based call connection method and system.

Background technique

"Entire network intelligence" is based on the "switch + intelligent network" equipment as the most effective voice service bearer network. It takes full advantage of the intelligent network to control the switch for call connection, and at the same time realizes real-time billing and instant display of call charges. Utilizing the powerful business processing capability and flexible business function characteristics of the intelligent network, combined with the switching and connection function of the switch, it can provide users with higher-quality business functions and services than ordinary switches and common intelligent networks.

Since the intelligentization of the whole network makes full use of the design idea of separating call connection and call control in the intelligent network, it avoids the technical bottleneck of the existing switching equipment. Therefore, it realizes the intelligent operation of the bearer network and provides customers with many unprecedented new business, new features.

For example, the terminal roaming service is a new service developed in the whole network intelligence. It combines the call control provided by the intelligent network service platform and the call connection of the softswitch device, and binds the physical number of the user terminal by assigning a virtual number , realizing the mobile roaming function of the calling terminal.

According to the Intelligent Network Application Protocol (Intelligent Network Application Protocol, INAP), the process of realizing a service similar to the terminal roaming service is shown in Figure 1, which specifically includes the following implementation steps:

Step s100: the softswitch (for example, for a service switching point (Service Switch Point, SSP)) sends an initial detection point (Initial Detect) to an intelligent network service platform (for example, for a service control point (Service Control Point, SCP)). Point, IDP) IDP message, initiate a trial call;

Step s110: the SCP sends a request to the SSP to report the message of the basic call state model (Basic Call StateModel, BCSM) event, to request the SSP to detect the state change of the detection point (DP) and report it to the SCP;

Step s120: the SCP controls the connection to the user terminal with the number 999999, wherein the prefix 1234 of the number indicates the connection to the routing information with the number 999999;

Step s130: The SSP detects the state change of the detection point, and reports the BCSM event message to the SCP, indicating that the connection failed, specifically:

DP4 indicates that the route selection to the user terminal with the number 999999 failed;

DP5 indicates that the user terminal with the number 999999 is in a "busy" state;

DP6 indicates that the user terminal with the number 999999 has no response;

Step s140: SCP will play prompt information to the calling terminal, and prompt the calling terminal to input another calling number (666666);

Step s150: After the calling terminal inputs the calling number 666666, the SSP reports the number information to the SCP;

Step s160: the SCP sends a message requesting the BCSM event to the SSP;

Step s170: the SCP controls and connects to the user terminal with the number 666666;

Step s180: After the calling terminal/called terminal hangs up, report the message of the BCSM event, specifically DP9: indicates the status information of the calling terminal/called terminal hanging up;

Step s190: the SCP controls to disconnect the call path established with the SSP.

It can be seen from the above that, in the existing method for realizing the mobile roaming function of the calling terminal, it is necessary to bind the physical number of the user terminal by assigning a virtual number. However, the number resources of telecom operators are limited, and users often have multiple terminals. If a number is assigned to each terminal, the resource consumption will be large, which will cause insufficient number resources of the operator;

In addition, after the user has applied for the number binding service, for example, when a calling terminal calls a fixed phone with an actual number assigned, the service control of the intelligent network will carry out the selection and connection of the terminal. Calling a number, when calling the PHS terminal fails, it will continue to trigger the service control of the intelligent network, reconnect the PHS, and form a repeated trigger of the service. There is no good method to prevent the repeated trigger of the service.

Contents of the invention

The purpose of the present invention is to propose a call connection method and system based on intelligent network control, so as to propose a new service realization method on the basis of intelligentization of the entire network, that is, an intelligent personal communication service implementation method of the entire network, using The intelligent network controls the switch to carry out call connection, realizing the call connection in which one user number is applied to multiple terminal devices at the same time.

In order to solve the above problems, the present invention discloses a call connection method based on intelligent network control, which includes the steps: the calling terminal initiates a call to a terminal device corresponding to a called number; the key point is that it also includes the following steps:

a. The softswitch device triggers the communication service to the intelligent network service platform according to the service setting of the terminal device corresponding to the called number;

b. The intelligent network service platform connects the call to the terminal device bound to the called number by the softswitch according to the registration information of the terminal device corresponding to the called number.

In the step b, if the call to the terminal device bound to the called number fails, the following steps are also included:

c. The intelligent network service platform sends a second connection message including extended value information for preventing repeated triggering of communication services to the softswitch device, and the softswitch device sends the second connection message according to the second connection message The call is connected to the terminal device corresponding to the called number.

Described step b specifically comprises:

b1. The intelligent network service platform sends a route including the called number and the terminal device bound to the called number to the softswitch according to the registration information of the terminal device corresponding to the called number Informational first connection message;

b2. The softswitch device connects the call to the communication network to which the terminal device bound to the called number belongs according to the first connection message;

b3. The communication network generates an internal number corresponding to the called number, and connects the call to the terminal device bound to the called number according to the internal number.

In the step c, before the step of sending the second connection message to the softswitch device by the intelligent network service platform, the following steps are further included:

The terminal device bound to the called number reports the call failure information to the intelligent network service platform through the soft switch device.

The communication network to which the terminal device bound to the called number belongs is the PHS network.

Correspondingly, the present invention discloses a call connection system based on intelligent network control. After the calling terminal initiates a call to the called terminal corresponding to a called number, it controls to connect the call to the system bound to the called number. Or the corresponding terminal equipment, key is, including:

The intelligent network service platform is configured to generate a first connection message for controlling the connection of the call to the terminal device bound to the called number according to the registration information of the terminal device corresponding to the called number, and to generate a first connection message based on the registration information of the called number information about the call failure of the terminal device bound to the called number, and generate a second connection message for controlling the connection of the call to the terminal device corresponding to the called number;

The softswitch device is configured to, when receiving a call, trigger a communication service to the intelligent network service platform according to the service setting of the terminal device corresponding to the called number of the call, and according to the first A connection message, connecting the call to the terminal device bound to the called number.

The intelligent network service platform specifically includes:

An information storage module, configured to save the registration information of the terminal device corresponding to the called number, the routing information connected to the terminal device bound to the called number, and the call status information reported by the softswitch;

A connection control module, configured to generate and control the softswitch to connect the call to the terminal device connected to the called number according to the registration information of the terminal device corresponding to the called number and the routing information connected to the terminal device bound to the called number. The first connection message of the terminal device bound to the called number, and according to the call failure information of the terminal device bound to the called number, generate and control the softswitch to connect the call to the called Call the second connection message of the terminal device corresponding to the number.

The first connection message includes the called number and routing information connected to the terminal device bound to the called number; the second connection message includes the calling number corresponding to the calling terminal as corresponding to prevent Information on the extension value of the repeated trigger communication service.

The communication network to which the terminal device bound to the called number belongs is the PHS network.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention proposes a new service implementation method based on the intelligence of the entire network, that is, an intelligent personal communication service implementation method of the entire network, using the intelligent network to control the softswitch equipment to carry out call connection, and realize the simultaneous application of one user number Call continuity for multiple terminal devices;

2. In addition, when the intelligent network controls the softswitch to connect the call to the called terminal, the information of the number category is expanded according to the INAP protocol, and the connection message sent to the softswitch under the intelligent network The switching device can control and avoid repeatedly triggering the communication service to the intelligent network according to the extended value information contained in the connection message, so the present invention can effectively control the connection of calls between multiple terminal devices;

3. Furthermore, in the personal communication service, the operator can only assign a corresponding terminal number to one of the terminal equipment of a user, and the other terminal equipment of the user can adopt the internal number allocation mechanism, which saves the number of the operator. At the same time, the connection rate of calls is improved. For users, since they can choose different terminal devices to answer calls, it is not only convenient for users, but also can save phone charges.

Description of drawings

FIG. 1 is a schematic diagram of an information exchange process between an SSP and an SCP according to the INAP in the prior art.

Fig. 2 is one of the schematic flow charts of the call connection method based on the intelligent network control of the present invention.

Fig. 3 is the second schematic flow diagram of the call connection method based on the intelligent network control of the present invention.

Fig. 4 is a schematic diagram of a specific embodiment of the present invention.

Fig. 5 is a schematic diagram of the flow of information interaction between the SSP and the SCP of the present invention.

Fig. 6 is a schematic diagram of the call connection system based on intelligent network control of the present invention.

Detailed ways

In order to clearly and accurately set forth the technical solution of the present invention, the terms in this specification are explained as follows:

1. User number: It is the calling number assigned to the terminal equipment by the operator, and one user number corresponds to one terminal equipment.

2. Calling end and called end: the terminal device that initiates a call is the calling end, and the user number corresponding to the calling end can be called the calling number; the target terminal device of a call is the called end, and the called end The user number corresponding to the calling end can be called the called number.

3. The terminal device corresponding to the called number and the terminal device bound to the called number: Since the user number resources that the operator can allocate to the terminal device are very limited, in order to achieve reasonable resource utilization, if a user has multiple terminal devices , the operator only allocates a user number to one of the user's terminal equipment, and other terminal equipment binds the user number with the user number, so as to realize that one user number provides communication services for multiple terminal equipment. Wherein, the terminal device assigned the user number by the operator is the terminal device corresponding to the user number, and other terminal devices bound to the user number are the terminal devices bound to the user number. From the perspective of the called end of a call, the terminal device corresponding to the called number is the called end terminal device that the operator actually assigns the user number to, and the terminal device bound to the called number is the called end device that is connected to the called number. Other bound end-terminal devices.

4. Personal communication service: a new type of service developed by the present invention on the basis of the intelligence of the entire network, through which one user number can be used to communicate with multiple terminal devices. The operator can only assign a corresponding terminal number to one of the terminal equipment of a user, and the other terminal equipment of the user can use the internal number allocation mechanism, which saves the number resources of the operator and improves the call completion rate at the same time. For the user, since different terminal devices can be selected to answer the call, it is not only convenient for the user, but also can save the call charge.

Please refer to FIG. 2 and FIG. 3 , both of which are schematic flowcharts of the call connection method based on intelligent network control of the present invention. Specifically include the following implementation steps:

Step s200: the calling terminal initiates a call to the called terminal;

Step s210: the softswitch device connects the call to the terminal device corresponding to the called number;

Step s220: the softswitch device triggers the communication service to the intelligent network service platform according to the service setting of the terminal device corresponding to the called number;

The softswitch will detect the status information of the detection point (DP), and initiate a call attempt to the terminal equipment corresponding to the called number. In addition, the service setting of the terminal equipment corresponding to the called number is: if the called If the number is called, the call will be connected to the terminal device bound to the called number first, so as to facilitate answering or save call charges, etc.;

The softswitch reports the BCSM event message to the intelligent network service platform, and reports the detection point information DP12 indicating that the terminal equipment corresponding to the called number initiates a call attempt as a BCSM event message to the intelligent network service platform, and the The communication service corresponding to the service setting of the terminal device corresponding to the called number is triggered to the intelligent network service platform.

Step s230: According to the registration information of the terminal device corresponding to the called number, the intelligent network service platform generates a terminal device that includes the called number and connects to the called number if the registration information indicates that the called number is bound to the terminal device. The first connection message of the routing information of the terminal device bound to the called number is used to control the softswitch to connect the call to the terminal device bound to the called number;

Step s240: the softswitch device connects the call to the communication network to which the terminal device bound to the called number belongs according to the first connection message;

Step s250: the communication network generates an internal number corresponding to the called number, and connects the call to the terminal device bound to the called number according to the internal number;

Step s260: If the call to the terminal device bound to the called number fails, the communication network to which the terminal device bound to the called number belongs reports the call failure to the intelligent network service platform through the softswitch information;

Step s270: the intelligent network service platform sends a second connection message to the softswitch device, including the extension value information that the calling number category corresponding to the calling terminal is corresponding to prevent repeated triggering of communication services;

Step s280: the softswitch device connects the call to the terminal device corresponding to the called number according to the second connection message;

Step s290: the call connection is successful, and after the calling end or the called end hangs up, the softswitch reports the message of the BCSM event that is specifically DP9 to indicate the state information of the calling end/called end hanging up, and reports to all The channel corresponding to the above call is disconnected.

Wherein, the extension value of the calling number category refers to expanding a value in the calling number category according to the Intelligent Network Application Protocol (INAP) GF017-95, to indicate that the calling number has already sent to the corresponding called number. The terminal device initiates a call attempt, if the softswitch connects the call to the terminal device corresponding to the called number according to the second connection message, since the calling number category is an extended value, the The softswitch device no longer triggers the communication service to the intelligent network service platform according to the extended value information, so as to prevent repeated triggering of the communication service.

In addition, one or more of the multiple terminal devices included in the called terminal may belong to communication networks of different operators, for example, the terminal device corresponding to the called number belongs to a mobile communication terminal of a mobile communication network, the The terminal equipment bound to the called number includes a fixed telephone terminal in a fixed telephone network, a PHS terminal in one or more PHS networks, and the like.

Taking the terminal device corresponding to the called number as a mobile communication terminal belonging to a mobile communication network, and the terminal device bound to the called number as a PHS terminal in the PHS network as an example, the implementation method of the present invention is further described.

Please refer to FIG. 4 , the dotted line only represents a schematic transmission route of signaling. The softswitch device may be a service switching point (SSP), and the intelligent network service platform may be a service control point (SCP). The calling number of the calling terminal is 111111, the number assigned by the operator to the called terminal 1 is 666666, and the called terminal 2 is a PHS terminal, which is bound to the number 666666 in advance, then when the call is connected to the PHS network, the PHS The Linktone network assigns an internal number 999999 of the PHS network to the called terminal 2 .

In FIG. 4, step 1 corresponds to the steps s200 and s210 in FIG. 2: the calling terminal initiates a call to the called terminal 1, and the softswitch device (SSP) connects the call to the terminal corresponding to the called number 666666 Device (called terminal 1);

Step 2 corresponds to the step s220 in FIG. 2: the softswitch device (SSP) triggers the communication service to the intelligent network service platform (SCP) according to the service setting of the terminal device corresponding to the called number 666666;

The softswitch (SSP) will detect the state information of the detection point (DP), and initiate a call trial to the terminal equipment (called terminal 1) corresponding to the called number 666666. In addition, the terminal equipment corresponding to the called number The business setting of the service is: if the called number is called, the call will be connected to the terminal device bound to the called number first;

The softswitch (SSP) reports the BCSM event message to the intelligent network service platform (SCP), and reports the detection point information DP12 indicating that the terminal equipment corresponding to the called number initiates a call attempt as a BCSM event message to the intelligent network service The platform triggers the communication service corresponding to the service setting of the terminal device corresponding to the called number 6666 to the intelligent network service platform.

Step 3 corresponds to the steps s230 to s250: the intelligent network service platform (SCP) generates a first connection message according to the registration information of the terminal device corresponding to the called number, and the first connection message includes the information corresponding to the called number. information and routing information connected to the terminal device bound to the called number, for example, in an example, the first connection message can be in the following form: 1234999999, the 1234 means connecting the call to the PHS network For routing information, 999999 is an internal number assigned by the PHS network, which corresponds to the called number 666666. The softswitch (SSP) can connect the call to the communication network (PHS network) to which the terminal device bound to the called number belongs according to the first connection message;

And, according to the internal number 999999, the call is connected to the terminal device (called terminal 2) bound to the called number.

Step 4 corresponds to the step s260 in FIG. 3; if the call to the terminal device (called terminal 2) bound to the called number 666666 fails, the communication network to which the terminal device bound to the called number 666666 belongs (PHS network) report call failure information to the intelligent network service platform (SCP) by the soft switch (SSP);

Step 5 corresponds to the steps s270 and s280 in Fig. 3, the intelligent network service platform (SCP) sends the caller number category corresponding to the calling terminal to the softswitch (SSP) to prevent repeated triggering The second connection message of the extended value information of the communication service; for example, in one example, the extended value information in the calling number category corresponding to the calling terminal is "CallerCatetory=0xE0", which is only an example here, and in other In the embodiment, other values can also be adopted;

The softswitch (SSP) judges that there is extended value information in it according to receiving the second connection message, and then does not call the call again to connect to the terminal equipment (terminal 2) bound to the called number 666666, but It is to connect the call to the terminal device (terminal 1) corresponding to the called number.

In addition, in this embodiment, the message process between the SSP and the SCP is shown in FIG. After the BCSM event message, the second connection message sent to the soft switch (SSP) includes: extended value information for preventing repeated triggering of communication services (ie "CallerCatetory=0xE0" in the figure). Through the extended value information here, the soft switch device (SSP) will not call the call again to the terminal device (terminal 2) bound to the called number 666666. Other steps are similar to the prior art and will not be described in detail here.

Correspondingly, the present invention also discloses a call connection system based on intelligent network control. After the calling terminal initiates a call to the called terminal corresponding to a called number, it controls to connect the call to the called number. specified or corresponding terminal equipment.

Please refer to FIG. 6, the terminal device corresponding to the called number refers to the called terminal 1, the terminal device bound to the called number refers to the called terminal 2, and the called terminal 2 can be a PHS terminal, The call connection system of the present invention includes:

The intelligent network service platform 510 is configured to generate a connection message for controlling the connection of the call to the called terminal 1 or the called terminal 2 according to the registration information of the called terminal 1 or according to the call failure information to the called terminal 2 ;

The soft switch device 520 is configured to trigger the communication service to the intelligent network service platform 510 according to the service setting of the called terminal 1 when the call is connected to the called terminal 1, and to trigger the communication service to the intelligent network service platform 510 according to the information issued by the intelligent network service platform 510. The connection message connects the call to the called terminal 1 or the called terminal 2 .

More specifically, the intelligent network service platform 510 specifically includes:

An information storage module 511, configured to save the registration information of the called terminal 1, the routing information connected to the called terminal 2, and the call status information reported by the softswitch device 520;

The connection control module 512 is configured to generate a first connection message for controlling the softswitch 520 to connect the call to the called terminal 2 according to the registration information of the called terminal 1 and the routing information connected to the called terminal 2, And according to the call failure information to the called terminal 2, generate a second connection message for controlling the soft switch device 520 to connect the call to the called terminal 1.

In particular, the first connection message includes the called number and routing information connected to the called terminal 2; the second connection message includes the calling number category corresponding to the calling terminal to prevent repeated triggering of communication Information about the extended value of the business.

In summary, compared with the prior art, the present invention has the following technical effects:

1. The present invention proposes a new service implementation method based on the intelligence of the entire network, that is, an intelligent personal communication service implementation method of the entire network, using the intelligent network to control the softswitch equipment to carry out call connection, and realize the simultaneous application of one user number Call continuity for multiple terminal devices;

2. In addition, when the intelligent network controls the softswitch to connect the call to the called terminal, the information of the number category is expanded according to the INAP protocol, and the connection message sent to the softswitch under the intelligent network The switching device can control and avoid repeatedly triggering the communication service to the intelligent network according to the extended value information contained in the connection message, so the present invention can effectively control the connection of calls between multiple terminal devices;

3. Furthermore, in the personal communication service, the operator can only assign a corresponding terminal number to one of the terminal equipment of a user, and the other terminal equipment of the user can adopt the internal number allocation mechanism, which saves the number of the operator. At the same time, the connection rate of calls is improved. For users, since they can choose different terminal devices to answer calls, it is not only convenient for users, but also can save phone charges.

The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention; therefore, although the specification has described the present invention in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand , the present invention can still be modified or equivalently replaced; and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the claims of the present invention.

Claims (8)

1. call connection method based on intelligent network control, comprise step: calling terminal makes a call to the terminal equipment of a called number correspondence; It is characterized in that, also comprise the steps:

A. Softswitch triggers communication service to the intelligent network services platform according to the business setting of the terminal equipment of described called number correspondence;

B. described intelligent network services platform is according to the log-on message of the terminal equipment of described called number correspondence, by the terminal equipment of described Softswitch with the extremely described called number binding of described call proceeding;

C. if during to the call failure of the terminal equipment of described called number binding, described intelligent network services platform issues second connection message that comprises the expanding value information that is used to prevent the repeated trigger communication service to described Softswitch, described Softswitch is according to described second connection message, with the terminal equipment of described call proceeding to described called number correspondence.

2. the call connection method based on intelligent network control according to claim 1 is characterized in that described step b specifically comprises:

B1. described intelligent network services platform is according to the log-on message of the terminal equipment of described called number correspondence, sends first connection message of routing iinformation that comprises described called number and be connected to the terminal equipment of described called number binding to described Softswitch;

B2. described Softswitch according to described first connection message with described call proceeding communication network under the terminal equipment of described called number binding;

B3. described communication network produces the intercom number of a described called number of correspondence, according to the terminal equipment of this intercom number with the extremely described in succession called number binding of described calling.

3. the call connection method based on intelligent network control according to claim 1 and 2 is characterized in that among the described step c, described intelligent network services platform issues before the step of second connection message to described Softswitch, also comprises the steps:

The terminal equipment of described called number binding reports the information of call failure to described intelligent network services platform by described Softswitch.

4. the call connection method based on intelligent network control according to claim 3 is characterized in that, communication network is a developing from pas network under the terminal equipment of described called number binding.

5. the call proceeding system based on intelligent network control after the called end of a called number correspondence makes a call, controls that described call proceeding is bound to described called number or corresponding terminal equipment at calling terminal, it is characterized in that, comprising:

The intelligent network services platform, be used for log-on message according to the terminal equipment of described called number correspondence, produce control with first connection message of described call proceeding to the terminal equipment of described called number binding, and be used for the information of basis to the call failure of the terminal equipment of described called number binding, produce control with second connection message of described call proceeding to the terminal equipment of described called number correspondence;

Softswitch, be used for when receipt of call, business setting according to the terminal equipment of the called number correspondence of described calling, trigger communication service to the intelligent network services platform, and described first connection message that issues according to described intelligent network services platform, with the terminal equipment of described call proceeding to described called number binding, and according to described second connection message, with the terminal equipment of described call proceeding to described called number correspondence.

6. the call proceeding system based on intelligent network control according to claim 5 is characterized in that described intelligent network services platform specifically comprises:

Information storage module is used to preserve the log-on message of the terminal equipment of described called number correspondence, the routing iinformation of terminal equipment that is connected to described called number binding and the state information of the described calling that described Softswitch reports;

Control module continues, be used for according to the log-on message of the terminal equipment of described called number correspondence and the routing iinformation that is connected to the terminal equipment of described called number binding, produce the described Softswitch of control with first connection message of described call proceeding to the terminal equipment of described called number binding, and, produce the described Softswitch of control with second connection message of described call proceeding to the terminal equipment of described called number correspondence according to information to the call failure of the terminal equipment of described called number binding.

7. the call proceeding system based on intelligent network control according to claim 6 is characterized in that, the routing iinformation that described first connection message comprises described called number and is connected to the terminal equipment of described called number binding; Described second connection message comprises that the calling number classification of described calling terminal correspondence is the corresponding information that prevents the expanding value of repeated trigger communication service.

8. according to each described call proceeding system of claim 5 to 7, it is characterized in that communication network is a developing from pas network under the terminal equipment of described called number binding based on intelligent network control.

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