CN1997083B - Network system and selection method of call route - Google Patents

Abstract

The invention discloses a network system, which stores the corresponding relationship between the routing selection condition and the call route including at least the IP address information of the calling party in the switching device or the location server; the switching device parses the call information of the calling user to obtain at least the The routing condition of the calling party's IP address information; then the switching device can determine the corresponding call by inquiring about the corresponding relationship stored by the switching device or the location server according to the obtained routing condition that includes at least the calling party's IP address information routing. The invention also discloses a switching device, a location server in the corresponding network system and a method for selecting call routing in the network system. The invention can realize call routing selection based on IP address information in the network system based on IP architecture.

Description

Network system and call routing method

technical field

The present invention relates to the technical field of communication, and more specifically, the present invention relates to a network system and a call routing selection method in the network system. the

Background technique

Next Generation Network (NGN, Next Generation Network) is a service-driven network. It adopts a comprehensive, open, and integrated network architecture. It separates service from call control, and separates call control from service bearer, making the service independent of the network. In order to achieve a relatively independent business system. the

Along with the development of NGN networks, the configuration and maintenance of routing information in NGN networks has become the key to the development of NGN networks. Therefore, the industry has proposed a hierarchical softswitch routing system solution and a location server positioning solution. The hierarchical routing The system solution is to adopt a routing mechanism similar to the traditional Public Switched Telephone Network (PSTN, Public Switched Telephone Network), using multi-level routing; while the location server positioning solution is to use the location server to provide routing services for one or a group of soft switches, when NGN When the network develops to a large scale and the number of softswitches is large, the location server can provide relatively more efficient routing services. the

At present, both the softswitch and the location server can provide more flexible call routing selection functions, for example, according to different call sources (such as calling number information), different calling user types (common, priority, data, operator, test), select different routes for different time periods, different called user numbers, bearer service types, etc. the

However, in the NGN network controlled by softswitches, the network adopts an IP-based architecture. The above-mentioned routing selection scheme adopts a call routing mechanism similar to that of the public switched telephone network, but it cannot realize call routing selection based on IP addresses. the

Contents of the invention

The technical problem solved by the embodiments of the present invention is to provide a switching device, a location server, a network system and a call routing method thereof, so as to realize call routing based on IP address information in a network system based on an IP architecture. the

In order to solve the above problems, a switching device of the present invention includes a call routing processing unit, and the call routing processing unit includes:

The storage unit is used to store the corresponding relationship between the routing selection condition and the call routing including at least the IP address information of the calling party;

The calling party IP address information acquisition unit is used to analyze the calling user call information to obtain the routing conditions including at least the calling party IP address information;

The route determining unit determines the corresponding call route according to the corresponding relationship stored in the obtained route selection condition query storage unit including at least the IP address information of the calling party. the

Correspondingly, a location server of the present invention includes:

The storage unit is used to store the corresponding relationship between the routing selection condition and the call routing including at least the IP address information of the calling party;

The route determination unit determines the corresponding call route according to the corresponding relationship stored in the route selection condition query storage unit including at least the IP address information of the calling party. the

Correspondingly, a switching device of the present invention includes a call routing processing unit, and the call routing processing unit includes:

The calling party IP address information acquisition unit is used to analyze the calling user call information to obtain the routing conditions including at least the calling party IP address information;

The call routing query unit is configured to query the location server for the corresponding call routing according to the routing selection condition including at least the IP address information of the calling party. the

Correspondingly, a network system of the present invention includes a switching device, the switching device includes a call routing processing unit, and the call routing processing unit includes:

A storage unit for storing at least the correspondence between the routing selection conditions including the calling IP address and the call routing;

The calling party IP address information acquisition unit is used to analyze the calling user call information to obtain the routing conditions including at least the calling party IP address information;

The route determining unit determines the corresponding call route according to the corresponding relationship stored in the obtained route selection condition query storage unit including at least the IP address information of the calling party. the

Correspondingly, another network system of the present invention includes a switching device, the switching device includes a call routing processing unit, and the network system also includes:

The location server stores the corresponding relationship between the routing selection condition and the call routing that includes at least the IP address information of the calling party, and responds to the call routing query request of the softswitch to return the corresponding call routing;

The call routing processing unit includes:

The calling party IP address information acquisition unit is used to analyze the calling user call information to obtain the routing conditions including at least the calling party IP address information;

A call routing query unit, configured to query the location server for the corresponding call routing according to the routing selection condition including at least the IP address information of the calling party. the

Correspondingly, a call routing method of the present invention includes:

Parsing the caller information of the calling party to obtain routing conditions including at least the IP address of the calling party;

Querying and determining a call route corresponding to the acquired routing condition including at least the IP address information of the calling party according to the obtained routing selection condition including at least the calling party's IP address information. the

According to an embodiment of the present invention, the corresponding relationship between the routing selection condition and the call routing that at least includes the IP address information of the calling party is stored in the switching device or the location server; the calling user is resolved by the switching device call information to obtain routing conditions that include at least the IP address information of the calling party; then the switching device queries the corresponding relationship stored in the switching device or the location server according to the obtained routing selection conditions that include at least the IP address information of the calling party The corresponding call route can be determined, so that the call route selection based on IP address information can be realized in the network based on IP architecture, which can further improve the flexibility of routing and meet the characteristics of high efficiency of NGN routing. the

Description of drawings

Fig. 1 is a schematic diagram of the system structure of the first preferred embodiment of the network system of the present invention;

Fig. 2 is the composition diagram of the preferred embodiment of the call routing processing unit of switching equipment in the network system shown in Fig. 1;

Fig. 3 is a schematic diagram of the system structure of the second preferred embodiment of the network system of the present invention;

Fig. 4 is a schematic composition diagram of a preferred embodiment of a location server in the network system shown in Fig. 3;

Fig. 5 is a schematic flow chart of the first preferred embodiment of the call routing method of the present invention;

Fig. 6 is a schematic flow chart of the second preferred embodiment of the call routing selection method of the present invention. the

Detailed ways

The present invention will be described in detail below with preferred embodiments in conjunction with the accompanying drawings. the

Referring to FIG. 1 , this figure is a schematic diagram of the system structure of the first preferred embodiment of the network system of the present invention. the

The network system described in this embodiment includes a calling/called user, an access gateway, a relay gateway, and a switching device, wherein the calling/called user can use a session initiation protocol (SIP, Session Initiation Protocol) to directly access the switching device ) terminal, other terminals that access the switching equipment through the access gateway, such as PSTN telephone terminals, or telephone terminals that access the switching equipment through the PSTN switch, can also be used, which will not be repeated here. the

The switching device is used as a call control device, and its selection of call routing directly affects the quality of the call. The switching device in this embodiment realizes intercommunication with a plurality of PSTN switches of the next hop through the trunk gateway. In addition, this implementation In this example, the switching device is pre-configured and stored in the routing selection condition including at least the calling party's IP address information and the corresponding relationship with the call route, wherein the calling party's IP address information may be the calling party's access gateway address information, It may also be the address information of the calling party's relay gateway, or the address information of the calling terminal device, or other IP address information that can identify the calling party, which will not be repeated here. the

In addition, the switching device can also use the routing selection condition of the calling party's IP address information that supports IP address wildcarding and the corresponding relationship between the call route. For example, the calling party's IP address is 10.11.xx.xx, and the switching device can Supports call routing corresponding to any IP address beginning with 10.11. the

After the switching device receives the call information of the calling party, the switching device parses the calling party information to obtain the routing condition including at least the IP address information of the calling party, and according to the routing selection condition including at least the IP address information of the calling party The corresponding call route can be determined by querying the correspondence between the pre-configured and stored route selection condition including at least the calling party's IP address information and the call route. the

It should be noted that in order to implement call routing based on IP addresses, the routing conditions obtained in this embodiment include at least the IP address information of the calling party. In addition, according to actual service needs, the routing conditions may also include: The source, calling user type, call time period, called user number and/or bearer service type, etc. will not be described here. the

With reference to Fig. 2, the switching device described in the present embodiment realizes the relevant function unit of the call routing selection based on IP address information mainly includes the call routing processing unit, in order to realize the call routing selection based on the IP address, the call routing described in the present embodiment The routing processing unit mainly includes: a storage unit 101, a calling party IP address information obtaining unit 102 and a routing determination unit 103, wherein

A storage unit 101, the storage unit 101 is mainly used for storing the corresponding relationship between the routing selection condition and the call routing including at least the IP address information of the calling party. the

With reference to the foregoing description, the routing conditions described in this embodiment include at least Calling party IP address information, and according to actual needs, it can also be combined with: call source, calling user category, call time period, called user number (or called user number prefix) and bearer service type, etc. Optional routing selection The combination of any one or more conditions (here is only an example, and does not limit other routing selection conditions that can be combined), for example, in a preferred embodiment, the routing selection condition is the combination of calling party IP address information Called subscriber number prefix information, the corresponding relationship between the routing selection conditions and call routing stored in the storage unit 103 that includes at least the IP address information of the calling party is shown in Table 1:

Table I

Calling party IP address information Called user number prefix call routing 10.11.12.12 6540 1 10.11.12.13 6540 2 ... ... ...

Wherein, the IP address of the calling party is 10.11.12.12 combined with the called user number prefix of 6540 corresponds to call route 1, and the IP address of the calling party is 10.11.12.13 combined with the called user number prefix of 6540 corresponds to call route 2. the

The calling party IP address information obtaining unit 102, the calling party IP address information obtaining unit 102 is mainly used for parsing the call information of the calling user to obtain the routing conditions including at least the calling party IP address information, referring to the foregoing description, for Realize call routing selection based on the calling party's IP address. When parsing the calling party's call information, at least the calling party's IP address information needs to be parsed out. In addition, other different routes combined with the calling party's IP address information can also be parsed out. The selection condition information will not be repeated here. the

A route determining unit 103, the route determining unit 103 mainly determines the corresponding call route according to the corresponding relationship stored in the acquired routing condition query storage unit 101 including at least the IP address information of the calling party. the

For example, taking the corresponding relationship in Table 1 as an example, when the calling party whose IP address is 10.11.12.12 Calling user A and calling user B whose IP address of the calling party is 10.11.12.13 dials the called user whose number prefix is 6540, and the switching device will select different routes (in this embodiment, the switching device will be the calling user User A and calling user B select call route 1 and call route 2 respectively). the

In addition, also referring to FIG. 2, as a preferred implementation, the routing determination unit 103 described in this embodiment may include:

The query processing unit 1031, the query processing unit 1031 mainly queries the corresponding relationship stored in the storage unit 101 according to the obtained routing condition including at least the IP address information of the calling party, and judges whether there is a corresponding relationship with the obtained routing condition including at least the calling party IP address information The call route matching the routing selection condition of the party's IP address information;

A routing selection unit 1032, the routing selection unit 1032 mainly matches the obtained routing selection condition that includes at least the IP address of the calling party when there is a call route that matches the obtained routing selection condition that includes at least the IP address of the calling party. The call route matching the route selection condition is selected as the call route. the

Referring to FIG. 3 , this figure is a schematic diagram of the system structure of the second preferred embodiment of the network system of the present invention. the

The network system in this embodiment mainly includes calling/called users, access gateways, relay gateways, location servers, and switching devices. As in the first embodiment, the calling/called users can use direct access The SIP terminal of the switching device may also use other terminals that access the switching device through an access gateway, such as a PSTN telephone terminal, or a telephone terminal that accesses the switching device through a PSTN switch, which will not be repeated here. the

In order to implement call routing based on IP address information, in this embodiment, the location server is pre-configured and stored in the location server. The IP address information of the calling party can also be the address information of the access gateway of the calling party, or the address information of the trunk gateway of the calling party, or the address information of the calling terminal equipment. In addition, the location server can also adopt the support The corresponding relationship between the routing selection condition of the calling party IP address information of the IP address wildcard and the call routing will not be repeated here. the

After the switching device receives the call information of the calling party, the switching device parses the calling party information to obtain a routing condition that includes at least the IP address information of the calling party; The routing condition of the information queries the location server for the corresponding call routing; the location server queries the pre-stored routing information that includes at least the IP address information of the calling party according to the routing selection condition that includes at least the IP address information of the calling party. The correspondence between the condition and the call route determines the corresponding call route, and returns the determined call route information to the switching device. the

It should be noted that the implementation of call routing based on IP address information is the same as in the first embodiment. The routing selection conditions obtained in this embodiment include at least the IP address information of the calling party. In addition, according to the needs of actual business services, the routing The selection criteria may also include: call source, calling user category, call time period, called user number and/or bearer service type, etc., which will not be described here. the

Referring to FIG. 4, this figure is a schematic diagram of the composition of a preferred embodiment of a switching device and a location server in the network system of the present invention, wherein the location server mainly includes: a storage unit 201 and a routing determination unit 202, wherein

A storage unit 201, the storage unit 201 is mainly used for storing the corresponding relationship between the routing selection condition and the call routing including at least the IP address information of the calling party. the

Similarly, with reference to the foregoing description, the routing conditions described in this embodiment include at least the IP address information of the calling party, and can also be combined according to actual needs: call source, calling user category, calling time period, called party number and/or bearer service type and other information, which will not be repeated here. the

A route determining unit 202, the route determining unit 202 is mainly used to determine the corresponding call route according to the corresponding relationship stored in the routing condition query storage unit 201 including at least the IP address information of the calling party. the

In addition, also referring to FIG. 4, as a preferred implementation, the routing determination unit 202 described in this embodiment may include:

The query processing unit 2021 is configured to select a route according to a routing entry that includes at least the IP address information of the calling party The corresponding relationship stored in the file query storage unit, to determine whether there is a call route matching the routing selection condition that includes at least the IP address of the calling party;

The route selection unit 2022, when there is a call route that matches the route selection condition that includes at least the calling party's IP address information, takes the call route that matches the routing selection condition that includes at least the calling party's IP address information as the selected call route. Call routing. the

The above-mentioned location server mainly implements call routing query in the network system. Correspondingly, for a switching device including a call routing processing unit, the call routing processing unit of the switching device in this embodiment is configured to: acquire the calling party IP address information Unit 211 and call routing inquiry unit 212, wherein

The calling party IP address information obtaining unit 211, the calling party IP address information obtaining unit is mainly used for parsing the calling user call information to obtain routing conditions including at least the calling party IP address information;

A call route query unit 212, the call route query unit 212 is mainly used to query the location server for a corresponding call route according to the route selection condition including at least the IP address information of the calling party. the

Below in conjunction with Fig. 1 and Fig. 5, the first preferred embodiment process of the method for realizing call routing of the present invention is illustrated, mainly comprising the following steps:

Step s31, the switching device parses the call information of the calling user to obtain the routing condition including at least the IP address information of the calling party;

During specific implementation, if the calling user is a SIP terminal, the IP address information of the calling party can be the IP address of the SIP terminal, if the calling user is a PSTN terminal accessing the switching device through the access gateway, the The IP address information of the calling party may be the IP address of the access gateway. the

In step s32, the switching device inquires the corresponding relationship between the routing selection condition and the call routing stored in itself according to the obtained routing selection condition and determines the corresponding call Called routing. the

Below in conjunction with Fig. 4 and Fig. 6, the process of the second preferred embodiment of the method for realizing call routing of the present invention is illustrated, mainly including the following steps:

Step s41, the switching device parses the call information of the calling party to obtain the routing condition including at least the IP address information of the calling party;

Step s42, the switching device queries the location server for the corresponding call route with the routing condition that at least includes the IP address information of the calling party;

Step s43, the location server queries the pre-stored routing conditions including at least the IP address information of the calling party according to the acquired routing conditions including at least the calling party's IP address information and the corresponding relationship between the call route and determines the corresponding call route;

In step s44, the location server returns the determined call routing information to the switching device. the

To sum up, during call routing selection, it is only necessary to parse out the routing selection conditions carried in the call information of the calling user that include at least the IP address of the calling party; The condition can be queried to determine the call route corresponding to the obtained routing condition that includes at least the calling party’s IP address information. In addition, if there is no call route that matches the routing condition that includes at least the calling party’s IP address or When the matching call route is unavailable or other circumstances, call routing can also be selected according to other methods, that is, the above-mentioned route determination unit and its corresponding component functional units performing routing selection, and the location server and its corresponding components performing routing selection The functional unit, if there is no call routing mode matching the routing selection condition including at least the IP address information of the calling party, can also use other routing selection technologies, which will not be described here. the

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention. the

Claims (14)

1. A switch, comprising a call routing processing unit, characterized in that, the call routing processing unit includes: a storage unit, configured to store the correspondence between routing conditions and call routing, including at least the IP address information of the calling party; The calling party IP address information obtaining unit is used to analyze the call information of the calling user to obtain the routing condition including at least the calling party IP address information; The route determining unit determines the corresponding call route according to the corresponding relationship stored in the acquired routing condition query storage unit including at least the IP address information of the calling party; The routing selection condition includes at least the IP address information of the calling party, and the routing selection condition also includes any one or a combination of call source, calling user type, call time period, called user number, and bearer service type. 2. The switching device according to claim 1, wherein the routing determining unit comprises: The query processing unit queries the corresponding relationship stored in the storage unit according to the obtained routing condition including at least the calling party's IP address information, and judges whether there is a match with the obtained routing condition including at least the calling party's IP address information call routing; The routing unit, when there is a call route that matches the acquired routing condition that includes at least the calling party's IP address information, route the call that matches the acquired routing condition that includes at least the calling party's IP address information route as the selected call route. 3. A location server, characterized in that, comprising: a storage unit, configured to store the correspondence between routing conditions and call routing, including at least the IP address information of the calling party; The route determining unit determines the corresponding call route according to the corresponding relationship stored in the routing condition query storage unit including at least the calling party's IP address information; The routing selection condition includes at least the IP address information of the calling party, and the routing selection condition also includes any one or a combination of call source, calling user type, call time period, called user number, and bearer service type. 4. The location server according to claim 3, wherein the routing determining unit comprises: The query processing unit, according to the corresponding relationship stored in the routing condition query storage unit that includes at least the calling party's IP address information, determines whether there is a call route that matches the routing selection condition that includes at least the calling party's IP address information; The routing unit, when there is a call route that matches the routing selection condition that includes at least the IP address information of the calling party, takes the call route that matches the routing selection condition that includes at least the IP address information of the calling party as the selected call route. Call routing. 5. A switch, comprising a call routing processing unit, characterized in that, the call routing processing unit includes: The calling party IP address information obtaining unit is used to analyze the call information of the calling user to obtain the routing condition including at least the calling party IP address information; A call routing query unit, configured to query the location server for the corresponding call routing according to the routing selection condition including at least the IP address information of the calling party; The routing selection condition includes at least the IP address information of the calling party, and the routing selection condition also includes any one or a combination of call source, calling user type, call time period, called user number, and bearer service type. 6. A network system, comprising switching equipment, said switching equipment comprising a call routing processing unit, characterized in that said call routing processing unit comprises: A storage unit, configured to store the correspondence between routing selection conditions including at least the calling IP address and call routing; The calling party IP address information obtaining unit is used to analyze the call information of the calling user to obtain the routing condition including at least the calling party IP address information; The route determining unit determines the corresponding call route according to the corresponding relationship stored in the acquired routing condition query storage unit including at least the IP address information of the calling party; The routing selection condition includes at least the IP address information of the calling party, and the routing selection condition also includes any one or a combination of call source, calling user type, call time period, called user number, and bearer service type. 7. The network system according to claim 6, wherein the routing determining unit comprises: The query processing unit, according to the corresponding relationship stored in the routing condition query storage unit that includes at least the calling party's IP address information, determines whether there is a call route that matches the routing selection condition that includes at least the calling party's IP address information; The routing unit, when there is a call route that matches the routing selection condition that includes at least the IP address information of the calling party, takes the call route that matches the routing selection condition that includes at least the IP address information of the calling party as the selected call route . 8. A network system, comprising switching equipment, said switching equipment comprising a call routing processing unit, characterized in that said network system further comprises: The location server stores the corresponding relationship between the routing selection condition and the call routing that includes at least the IP address information of the calling party, and returns the corresponding call routing in response to the call routing query request of the switching device; The call routing processing unit includes: The calling party IP address information obtaining unit is used to analyze the call information of the calling user to obtain the routing condition including at least the calling party IP address information; a call routing query unit, configured to query the location server for a corresponding call routing according to routing conditions including at least the IP address information of the calling party; The routing selection condition includes at least the IP address information of the calling party, and the routing selection condition also includes any one or a combination of call source, calling user type, call time period, called user number, and bearer service type. 9. The network system according to claim 8, wherein the location server comprises: a storage unit, configured to store the correspondence between routing conditions and call routing, including at least the IP address information of the calling party; The route determination unit determines the corresponding call route according to the corresponding relationship stored in the route selection condition query storage unit including at least the IP address information of the calling party. 10. The network system according to claim 9, wherein the routing determining unit comprises: The query processing unit, according to the corresponding relationship stored in the query storage unit according to the routing selection condition that includes at least the calling party's IP address information, determines whether there is a call route that matches the routing selection condition that includes at least the calling party's IP address information; The routing unit, when there is a call route that matches the routing selection condition that includes at least the IP address information of the calling party, takes the call route that matches the routing selection condition that includes at least the IP address information of the calling party as the selected call route . 11. A call routing method, characterized in that the method comprises: Parsing the call information of the calling party to obtain a routing condition that includes at least the IP address of the calling party; Querying and determining a call route corresponding to the obtained routing condition including at least the IP address information of the calling party according to the obtained routing condition query; The routing selection condition includes at least the IP address information of the calling party, and the routing selection condition also includes any one or a combination of call source, calling user type, call time period, called user number, and bearer service type. 12. The call routing method according to claim 11, wherein the query determines that the call routing corresponding to the obtained routing selection condition including at least the IP address information of the calling party is: The switching device inquires the corresponding relationship between the route selection conditions stored in itself and the call route according to the obtained routing conditions including at least the calling party's IP address information, and then determines the corresponding relationship with the obtained at least the calling party's IP address information. The call route corresponding to the route selection condition including the IP address information of the calling party. 13. The call routing method according to claim 11, wherein the query determines that the call routing corresponding to the obtained routing selection condition including at least the IP address information of the calling party is: The switching device queries the location server for a corresponding call route according to the acquired routing condition including at least the IP address information of the calling party; The location server inquires the corresponding relationship between the route selection condition that includes at least the calling party's IP address information and the call route stored in itself, and then determines the call route corresponding to the obtained routing selection condition that includes at least the caller's IP address information; The location server returns the determined call routing information to the switching device. 14. The call routing method according to any one of claims 11-13, wherein the calling party IP address information is the calling access gateway IP address information or the calling trunk gateway IP address information or IP address information of the calling terminal device.

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