CN108271146B

CN108271146B - Call implementation method, controller and server

Info

Publication number: CN108271146B
Application number: CN201611269645.0A
Authority: CN
Inventors: 徐亮; 张栋; 孙红芳; 赵绍刚; 孙金霞; 葛澍
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2021-03-05
Anticipated expiration: 2036-12-30
Also published as: CN108271146A

Abstract

The invention discloses a method for realizing calling, which comprises the steps of determining the location of a calling party according to user position information, and determining a region identification code corresponding to the location of the calling party; generating a calling request containing a called number, wherein the called number comprises a calling number and the area identification code; and sending the call request. The invention also discloses a controller and a server.

Description

Call implementation method, controller and server

Technical Field

The invention relates to the technical field of call communication, in particular to a call implementation method, a controller and a server.

Background

Currently, short numbers refer to numbers used by government and enterprise applications such as 95588 and 12345, and are ubiquitous in second Generation (2G) and third Generation (3G) networks. An IP Multimedia Subsystem (IMS) based network used by a Voice over Long Term Evolution (VoLTE) based audio video call network adopts a home location control scheme. If the VoLTE user directly dials the short number, because VoLTE uses the home location control strategy, which is different from the 2/3G network using the visited location control strategy, if the home location does not open the short number already opened by the user visited location, the user will fail to call the short number, which conflicts with the 2/3G user's short number service that can be opened by dialing the visited location. For example, if Kunming did not open 95560 short number service and Shanghai opened the service, roaming of Kunming VoLTE subscriber to Shanghai dial 95560 would result in a failure of the subscriber to call the short number.

Fig. 1 is a schematic diagram of an existing implementation scheme for dialing a short number by a VoLTE user, AS shown in fig. 1, a VoLTE Application Server (AS, Application Server) in a calling home location correspondingly normalizes a called number 95560 according to location information of a calling visiting sea, adds an area number (8621) of a calling visiting location in front of the called number 95560, and then sends the area number to a kunming CS domain in the calling home location gateway office to perform connection through a 2/3G network.

However, the prior art only solves the problem that a user dials a common short number in a VoLTE network, but cannot solve the problem that the short number is landed according to a small administrative area and the problem that the user dials a short number when roaming in an area with a common area code in multiple cities. However, both of these situations are prevalent in existing 2/3G networks. The above sub-administrative regions refer to regions of the same district number, which are of a level below the prefecture, and do not include the prefecture.

For example, fig. 2 shows an implementation procedure of dialing a landing short number according to a small administrative area, as shown in fig. 2, zheng and unsealed two district numbers 0371 shared by prefecture cities, there are cases where part of the short number is already opened in the unsealed state but zheng is not opened. Taking the short code city chief hotline 12345 as an example, the VoLTE user in hangzhou roams to the unsealing dial 12345, and since zheng state does not open the 12345 service, a failure is caused when calling the zheng state gateway. If Zheng opened 12345, he will route to the wrong civic hot line. However, in the 2/3G network, as long as the 12345 service is opened, the user can successfully call the opened short number 12345 when roaming to the opened state, thereby greatly reducing the satisfaction degree of the user on the communication quality.

Fig. 3 is a flow of implementing dialing short numbers when a user roams in a region with a common area code in multiple cities and districts, as shown in fig. 3, a part of short numbers such as 96371 exist in the current network, and a source suffix needs to be added to send the short numbers to a floor operator or an access point in the network, so as to implement sending the short numbers to different call centers according to the small administrative regions where the calling party is located. When a VoLTE user in the Hangzhou city area calls 96371 in a Hangzhou city Xiaoshan area, the VoLTE AS in the Hangzhou city area in the home area completes the number of the home area, and the call is connected to a 96371 call center in the Hangzhou city area, so that the call center can not be accessed according to different sources, and the satisfaction degree of the user on the communication quality is greatly reduced.

Disclosure of Invention

In view of this, embodiments of the present invention are intended to provide a method, a controller, and a server for implementing a call, so as to improve the success rate of the call.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:

the embodiment of the invention provides a method for realizing a call, which comprises the following steps:

determining the location of the calling party according to the user position information, and determining a region identification code corresponding to the location of the calling party;

generating a calling request containing a called number, wherein the called number comprises a calling number and the area identification code;

and sending the call request.

In the above solution, before determining the location of the calling party according to the user location information, the method further includes:

identifying a signaling message reported by a terminal, acquiring a tracking area identifier or a cell global identifier contained in the signaling message, and determining user position information according to the TAI or the ECGI; alternatively, the first and second electrodes may be,

acquiring user position information through data received by a receiving interface; alternatively, the first and second electrodes may be,

and taking the position information reported by the terminal as the user position information.

In the above solution, the generating a call request including a called number includes:

the called number is added to the header field of the call request.

The embodiment of the invention also provides a method for realizing the call, which comprises the following steps:

receiving a call request;

identifying a called number contained in the call request, wherein the called number comprises a region identification code and a calling number;

and reconstructing the called number, and initiating a call according to the reconstructed called number.

In the above solution, before reconstructing the called number, the method further includes:

and when the area number in the calling number is determined to be consistent with the city-level identification code in the area identification code, reconstructing the called number, and initiating a call according to the reconstructed called number.

An embodiment of the present invention provides a controller, including:

the determining module is used for determining the location of the calling party according to the user position information and determining a region identification code corresponding to the location of the calling party;

the generation module is used for generating a calling request containing a called number, wherein the called number comprises a calling number and the area identification code;

and the sending module is used for sending the call request.

In the above scheme, the generating module is specifically configured to add the called number to a header field of the call request.

In the above solution, the controller further includes: an acquisition module;

the acquiring module is used for identifying the signaling message reported by the terminal, acquiring a tracking area identifier or a cell global identifier contained in the signaling message, and determining user position information according to the TAI or the ECGI; alternatively, the first and second electrodes may be,

An embodiment of the present invention provides a server, where the server includes:

a receiving module, configured to receive a call request;

the identification module is used for identifying a called number in the calling request, wherein the called number comprises a region identification code and a calling number;

and the calling module is used for reconstructing the called number and initiating a call according to the reconstructed called number.

In the above solution, the server further includes: a judgment module;

and the judging module is used for triggering the calling module when the area code in the calling number is determined to be consistent with the city-level identification code in the area identification code.

The method, the controller and the server for realizing the call determine the location of the calling party according to the user position information and determine the area identification code corresponding to the location of the calling party; generating a calling request containing a called number, wherein the called number comprises a calling number and the area identification code; and sending the call request. Therefore, even if the control strategy of the attribution place is adopted, the calling under various application scenes can be realized, the success rate of the calling is improved, the satisfaction degree of the communication quality is improved, and the application range of the technical scheme is very wide.

Drawings

Fig. 1 is a schematic diagram of a flow of implementing a conventional scheme for dialing a short number by a conventional VoLTE user;

fig. 2 is a schematic diagram of a conventional implementation process for dialing a short number falling to the ground according to a small administrative area;

fig. 3 is a schematic diagram illustrating a conventional implementation process of dialing a short number when a user roams in an area with a common area code in multiple local cities;

fig. 4 is a first flowchart illustrating a call implementation method according to an embodiment of the present invention;

FIG. 5 is a second flowchart illustrating a call implementation method according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a controller according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a server according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a VoLTE user dialing a normal short number in province of a common area code in a non-multi-city according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a VoLTE user dialing a normal short number in province of a common area code in multiple cities according to the embodiment of the present invention;

fig. 10 is a schematic diagram illustrating that a VoLTE subscriber dials a short number by administrative district and land in province of a non-multi-district city common area code according to an embodiment of the present invention;

fig. 11 is a schematic diagram illustrating that a VoLTE user dials a short number according to administrative districts and landings in province of a multi-city common district number according to an embodiment of the present invention;

fig. 12 is a schematic diagram illustrating a VoLTE subscriber plus a short number floor area code to dial the short number according to an embodiment of the present invention;

fig. 13 is a schematic diagram illustrating that a VoLTE subscriber is restricted from dialing short numbers with area codes of other regions according to an embodiment of the present invention.

Detailed Description

So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.

Example one

In this embodiment, the controller side is taken as an example to describe the processing procedure of the call implementation method in detail. As shown in fig. 4, the implementation flow of the method for implementing a call in this embodiment includes the following steps:

step 401: and determining the location of the calling party according to the user position information, and determining a region identification code corresponding to the location of the calling party.

Here, before determining the location of the caller according to the user location information, the method further includes:

a controller of a calling visited place identifies a signaling message reported by a terminal, acquires a Tracking Area Identifier (TAI) or a Cell Global Identifier (E-CGI) contained in the signaling message, and determines user position information according to the TAI or the ECGI; or, acquiring user location information through data received by a Reception (RX) interface; or, the position information reported by the terminal is used as the user position information. Wherein the Controller includes, but is not limited to, a Session Border Controller (SBC).

Here, the area identification code is set for an area in network planning, and the area identification code have a one-to-one correspondence relationship, so that the area identification code corresponding to the location of the caller can be determined after the location of the caller is determined. When the region is divided by administrative regions, the region identification code may include a city level identification code and a district level identification code, or a city level identification code and a county level identification code. The region identifier may further include a device coverage area level identifier or a cell level identifier when it is desired that the region identifier be able to distinguish regions having a finer granularity. The number of digits of the region identification code can be changed according to actual conditions, specifically, the city level identification code can be set to be 1 digit and is represented by a letter A; the district-level identification code or the county-level identification code can be set to be 2 bits and expressed by letters XY; similarly, the number of bits of the device coverage area level identifier or the cell level identifier is the same as above, and is not described again.

Step 402: generating a call request including a called number, the called number including a calling number and the area identification code.

Here, the generating of the call request including the called number includes: the controller of the calling visit place adds the called number to the header field of the call request. The header field may specifically be a P-Access-Network-Info header field, or a header field other than the P-Access-Network-Info header field, such as a header field of a Session Initiation Protocol (SIP) message; more specifically, the called number may be sbc-domain parameter added to the P-Access-Network-Info header field, or may be a parameter other than sbc-domain parameter. The called number may be in the specific form of sbc-domain parameter: sbc-domain is the area code, area identifier, china mobile. The location of the area code and the area identification code in the sbc-domain parameter can be adjusted according to the requirement.

Step 403: and sending the call request.

The call request may be specifically sent to a server of the calling home, and after receiving the call request, the server reconstructs the called number included in the call request and initiates a call according to the reconstructed called number.

Here, the calling number includes an area code, the area code is input when a calling party calls, and before reconstructing the called number, the method may further include: and the server of the calling home judges whether the area number in the calling number is consistent with the city-level identification code in the area identification code or not, if so, the called number is reconstructed, the calling is initiated according to the reconstructed called number, and if not, the calling is initiated directly according to the called number.

Wherein the Server includes, but is not limited to, an Application Server (AS).

Example two

In this embodiment, a server side is taken as an example to describe in detail a processing procedure of a call implementation method. As shown in fig. 5, the implementation flow of the method for implementing a call in this embodiment includes the following steps:

step 501: and receiving a call request sent by a controller at the calling place.

Here, the server of the caller's home receives a call request sent by the controller of the caller's home. Wherein the server includes, but is not limited to, an AS.

Step 502: and identifying a called number contained in the call request message, wherein the called number comprises a region identification code and a calling number.

Here, the server of the calling home identifies the area identification code and the calling number included in the call request in the header of the call request. Specifically, the server of the calling home identifies the area identifier and the call number contained in the call request in a P-Access-Network-Info header field of the call request, and more specifically, may be an sbc-domain parameter in the P-Access-Network-Info header field.

Step 503: and reconstructing the called number, and initiating a call according to the reconstructed called number.

Here, before reconstructing the called number, the method may further include: and the server of the calling home judges whether the area number in the calling number is consistent with the city-level identification code in the area identification code or not, if so, the called number is reconstructed, the calling is initiated according to the reconstructed called number, and if not, the calling is initiated directly according to the called number.

Here, the reconstructed called number may include: the system comprises a region identification code, a routing code and a calling number, wherein the sequence of the region identification code, the routing code and the calling number can be adjusted according to needs or network regulations.

The routing code is used for marking that the call originates from the VoLTE network, and the bit length of the routing code can be set according to actual conditions and is not used in the existing network, for example, the routing code may be 1254718 which is not used by the existing network.

EXAMPLE III

To implement the method of the first embodiment, this embodiment provides a controller, as shown in fig. 6, where the controller includes: a determining module 61, a generating module 62 and a sending module 63; wherein the content of the first and second substances,

the determining module 61 is configured to determine a location of the caller according to the user location information, and determine a region identifier corresponding to the location of the caller;

the generating module 62 is configured to generate a call request including a called number, where the called number includes a calling number and the area identification code;

the sending module 63 is configured to send the call request.

Here, the generating module 62 is specifically configured to add the called number to a header field of the call request.

The header field may specifically be a P-Access-Network-Info header field, or a header field other than the P-Access-Network-Info header field, such as a header field of a Session Initiation Protocol (SIP) message; more specifically, the called number may be sbc-domain parameter added to the P-Access-Network-Info header field, or may be a parameter other than sbc-domain parameter. The called number may be in the specific form of sbc-domain parameter: sbc-domain is the area code, area identifier, china mobile. The location of the area code and the area identification code in the sbc-domain parameter can be adjusted according to the requirement.

Here, the controller further includes: an acquisition module; wherein the content of the first and second substances,

the acquiring module is configured to identify a signaling message reported by a terminal, acquire a Tracking Area Identity (TAI) or a Cell Global Identity (E-CGI) included in the signaling message, and determine user location information according to the TAI or the ECGI; or, acquiring user location information through data received by a Reception (RX) interface; or, the position information reported by the terminal is used as the user position information.

Here, the controller includes, but is not limited to, an SBC.

In practical applications, the determining module 61, the generating module 62, the sending module 63, and the obtaining module may be implemented by a Central Processing Unit (CPU), a microprocessor Unit (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like in a controller.

Example four

To implement the method of the second embodiment, this embodiment provides a server, as shown in fig. 7, where the server includes: a receiving module 71, an identifying module 72 and a calling module 73; wherein the content of the first and second substances,

the receiving module 71 is configured to receive a call request sent by a controller in a location where a calling party is located;

the identification module 72 is configured to identify a called number included in the call request message, where the called number includes a region identification code and a calling number;

the calling module 73 is configured to reconstruct the called number, and initiate a call according to the reconstructed called number.

Here, the identifying module 72 is specifically configured to identify the area identifier and the calling number included in the call request in a header field of the call request.

Specifically, the identifying module 72 identifies the area identifier and the call number included in the call request in a P-Access-Network-Info header field of the call request, and more specifically, may be an sbc-domain parameter in the P-Access-Network-Info header field.

Here, the server further includes: a judgment module; wherein the content of the first and second substances,

the judging module is used for judging whether the area code in the calling number is consistent with the city-level identification code in the area identification code, if so, the calling module 73 is triggered, and if not, the calling is directly initiated according to the called number.

Here, the server includes, but is not limited to, an AS.

In practical applications, the receiving module 71, the identifying module 72, the calling module 73 and the determining module can be implemented by a CPU, an MPU, a DSP, an FPGA, etc. located in the server.

The following describes the implementation and principle of the present invention in practical application in detail by taking the calling short number as a specific example.

Fig. 8 is a schematic diagram of a VoLTE user dialing a normal short number in province of a non-multi-city common area code according to the embodiment of the present invention, as shown in fig. 8, kunming does not open 95560, shanghai opens 95560, and a VoLTE user in the home country dials 95560 on a visited place. The specific implementation process comprises the following steps:

step 801: a VoLTE SBC of a calling party visiting the open sea acquires an area identification code of the open sea where the calling party is located through user position information, and generates a calling request containing a called number, wherein the called number comprises a calling number and the area identification code;

step 802: sending the call request to VoLTE AS of a calling home Kunming;

step 803: receiving the call request by a calling Homing Kunming VoLTE AS;

step 804: the VoLTE AS of the calling home Kunming identifies a called number contained in the call request, wherein the called number comprises a region identification code and a calling number;

step 805: the VoLTE AS of a calling home country judges whether an area number in a calling number is consistent with a city-level identification code 021 in the area identification code, if so, the called number is reconstructed, the reconstructed called number 021AXY 12547895560 is an identification code 021AXY + routing code 1254718+ short number 95560, and a calling coordination Node (CMN, Call media Node) of a Kunming Circuit Switched (CS) domain routes a Call of the reconstructed called number to a gateway office of a calling home country through a 2/3G network according to the reconstructed city-level identification code 021 in the called number, and the gateway of the calling home country regulates the called number into 95560 to Call.

Fig. 9 is a schematic diagram of the VoLTE subscriber dialing a normal short number in the province of the common area code of the multi-city according to the embodiment of the present invention, as shown in fig. 9, no opening 95560 in zheng, an opening 95560, and an opening dialing 95518 in the visited place by the VoLTE subscriber in the hangzhou home. The specific implementation process comprises the following steps:

step 901: the method comprises the steps that a VoLTE SBC opened in a calling visit place acquires an opened area identification code of a calling place through user position information, and generates a calling request containing a called number, wherein the called number comprises a calling number and the area identification code;

step 902: sending the call request to VoLTE AS of Hangzhou of a calling home location;

step 903: receiving the call request by a VoLTE AS of Hangzhou of a calling place;

step 904: VoLTE AS of Hangzhou of a calling place identifies a called number contained in the calling request, wherein the called number comprises a region identification code and a calling number;

step 905: the VoLTE AS of Hangzhou of a calling place judges whether an area code in a calling number is consistent with a city-level identification code 0371 in the area identification code, if so, the calling number is reconstructed, the reconstructed called number 0371AXY 12547895518 is an identification code 0371AXY + routing code 1254718+ short number 95518, the CMN of the Hangzhou CS domain is forwarded to an Zheng CS domain according to the city-level identification code A in the reconstructed called number, the Zheng CS domain is according to the area-level identification code 0371, the reconstructed called number is routed to a gateway opened at the calling place through a 2/3G network, and the gateway opened at the calling place regulates the called number to 95518 and then calls.

Fig. 10 is a schematic diagram illustrating that a VoLTE user dials a short number per administrative district according to province of a common district number in non-multiple cities according to the embodiment of the present invention, as shown in fig. 10, hang state city district is opened 96371, and a home hang state VoLTE user dials 96371 in a visiting region shaoshan district. The specific implementation process comprises the following steps:

step 1001: a VoLTE SBC of a calling visiting region Xiaoshan area acquires an area identification code of the Xiaoshan area where a calling party is located through user position information, and generates a calling request containing a called number, wherein the called number comprises a calling number and the area identification code;

step 1002: sending the call request to VoLTE AS of Hangzhou urban area of a calling home location;

step 1003: receiving the call request by VoLTE AS in Hangzhou city area of a calling home location;

step 1004: the VoLTE AS of the Hangzhou city area of the calling place identifies a called number contained in the calling request, wherein the called number comprises a region identification code and a calling number;

step 1005: the VoLTE AS of the Hangzhou urban area of the calling home location judges whether the area number in the calling number is consistent with a city-level identification code 0571 in the identification code, if so, the called number is reconstructed, the reconstructed called number 0571AXY 12547896371 is an identification code 0571AXY + routing code 1254718+ short number 96371, the CMN of the Hangzhou CS domain sends the calling to a gateway office of the calling Yangshou mountain area through 2/3G network routing according to the reconstructed area-level identification code 0571 and the county-level identification code XY in the called number, and the gateway office of the calling Yangshou mountain area regulates the called number to 956371 and then calls.

Fig. 11 is a schematic diagram of the VoLTE user dialing the short number by the administrative district landing in province of the multi-city common area code according to the embodiment of the present invention, as shown in fig. 11, no 95518 is opened in zheng, 95518 is opened in unsealing, and a 95518 is dialed in unsealing at the visited place by the VoLTE user in home. The specific implementation process comprises the following steps:

step 1101: the method comprises the steps that a VoLTE SBC opened in a calling visit place acquires an opened area identification code of a calling place through user position information, and generates a calling request containing a called number, wherein the called number comprises a calling number and the area identification code;

step 1102: sending the call request to VoLTE AS of Hangzhou of a calling home location;

step 1103: receiving the call request by a VoLTE AS of Hangzhou of a calling place;

step 1104: VoLTE AS of Hangzhou of a calling place identifies a called number contained in the calling request, wherein the called number comprises a region identification code and a calling number;

step 1105: the VoLTE AS of the Hangzhou of the calling home location judges whether the area code in the calling number is consistent with the city-level identification code 0571 in the area identification code, if so, the called number is reconstructed, the reconstructed called number 0371AXY 12547895518 is an identification code 0371AXY + routing code 1254718+ short number 95518, the CMN of the Hangzhou CS domain sends the call to the Zhenzhou gateway according to the city-level identification code A in the reconstructed called number, the Zhenzhou CS domain sends the call to the gateway opened by the calling visit location through 2/3G network routing according to the visit area number 0371 in the identification code, and the opened gateway regulates the called number to be 95518 to carry out the call.

Fig. 12 is a schematic diagram illustrating an embodiment of the present invention for limiting a VoLTE user to dial a short number by adding the short number to the floor area code, and as shown in fig. 12, a local kunming VoLTE user dials 01095518 on a visiting ground, where 010 is not the kunming area code and is not the shanghai area code. The specific implementation process comprises the following steps:

step 1201: a VoLTE SBC of a calling party visiting the open sea acquires an area identification code of the open sea where the calling party is located through user position information, and generates a calling request containing a called number, wherein the called number comprises a calling number and the area identification code;

step 1202: sending the call request to VoLTE AS of a calling home Kunming;

step 1203: receiving the call request by a calling Homing Kunming VoLTE AS;

step 1204: the VoLTE AS of the calling home Kunming identifies a called number contained in the call request, wherein the called number comprises a region identification code and a calling number;

step 1205: VoLTE AS of a calling home location judges that an area code 010 in a calling number is inconsistent with a calling visited area code 021, does not reconstruct a called number, and calls through an 2/3G network.

Fig. 13 is a schematic diagram illustrating that the VoLTE subscriber and the area code of another area are restricted to dial short numbers according to the embodiment of the present invention, as shown in fig. 13, kunming does not open 95560, shanghai opens 95560, and the local kunming VoLTE subscriber dials 057195518 on the visited ground, where 0571 is not the kunming area code nor the shanghai area code. The specific implementation process comprises the following steps:

step 1301: a VoLTE SBC of a calling party visiting the open sea acquires an area identification code of the open sea where the calling party is located through user position information, and generates a calling request containing a called number, wherein the called number comprises a calling number and the area identification code;

step 1302: sending the call request to VoLTE AS of a calling home Kunming;

step 1303: receiving the call request by a calling Homing Kunming VoLTE AS;

step 1304: the VoLTE AS of the calling home location identifies a called number contained in the call request message, wherein the called number comprises a region identification code and a calling number;

step 1305: VoLTE AS of a calling home location judges that the area number 0571 in the calling number is inconsistent with the area number 021 visited by the calling, does not reconstruct the called number, and calls through an 2/3G network.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A method of call implementation, the method comprising:

determining the location of the calling party according to the user position information, and determining a region identification code corresponding to the location of the calling party; the region identification code is set according to the region in the network planning; the region identification code comprises a city level identification code and a region level identification code, or a city level identification code and a county level identification code;

and sending the calling request to a server, so that the server reconstructs the called number when the area number in the calling number is consistent with the city-level identification code in the area identification code, and initiates a call according to the reconstructed called number.

2. The method of claim 1, wherein before determining the location of the caller based on the user location information, the method further comprises:

identifying a signaling message reported by a terminal, acquiring a Tracking Area Identifier (TAI) or a cell global identifier (ECGI) contained in the signaling message, and determining user position information according to the TAI or the ECGI; alternatively, the first and second electrodes may be,

3. The method of claim 1, wherein generating the call request including the called number comprises:

the called number is added to the header field of the call request.

4. A method of call implementation, the method comprising:

receiving a call request;

identifying a called number contained in the call request, wherein the called number comprises a region identification code and a calling number; the region identification code is set according to the region in the network planning; the region identification code comprises a city level identification code and a region level identification code, or a city level identification code and a county level identification code;

5. A controller, characterized in that the controller comprises:

the determining module is used for determining the location of the calling party according to the user position information and determining a region identification code corresponding to the location of the calling party; the region identification code is set according to the region in the network planning; the region identification code comprises a city level identification code and a region level identification code, or a city level identification code and a county level identification code;

and the sending module is used for sending the calling request to a server so that the server reconstructs the called number when the area number in the calling number is consistent with the city-level identification code in the area identification code, and initiates a call according to the reconstructed called number.

6. The controller of claim 5,

the generating module is specifically configured to add the called number to a header field of the call request.

7. The controller of claim 5, further comprising: an acquisition module;

the acquiring module is used for identifying the signaling message reported by the terminal, acquiring a Tracking Area Identifier (TAI) or a cell global identifier (ECGI) contained in the signaling message, and determining user position information according to the TAI or the ECGI; alternatively, the first and second electrodes may be,

8. A server, characterized in that the server comprises:

a receiving module, configured to receive a call request;

the identification module is used for identifying a called number contained in the calling request, wherein the called number comprises a region identification code and a calling number; the region identification code is set according to the region in the network planning; the region identification code comprises a city level identification code and a region level identification code, or a city level identification code and a county level identification code;

the judging module is used for triggering the calling module when the area code in the calling number is determined to be consistent with the city-level identification code in the area identification code;