WO2012151858A1

WO2012151858A1 - Call connection method and application server

Info

Publication number: WO2012151858A1
Application number: PCT/CN2011/081181
Authority: WO
Inventors: 屈天喜
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-05-10
Filing date: 2011-10-24
Publication date: 2012-11-15
Also published as: CN102780986A

Abstract

Provided are a call connection method and application server, for solving the existing problem that the terminal, the switching service of which has to be the call transfer operator after calling, supports the call hold function and supports the sending of refer messages. The method includes: an application server receiving a call request initiated by a first terminal, with the call request carrying a call connection service code and a communication number of a second terminal; the application server judging whether or not the first terminal has the right to connect the current session of the second terminal according to a first public network number of the first terminal and the communication number of the second terminal; when the first terminal has the right to connect the current session of the second terminal, the application server establishing a session connection between the current session party of the second terminal and the first terminal; and the application server controlling the second terminal to disconnect from the current session party. The technical solution is applied in various terminals in the existing network and the terminal need not support the call hold function or support the sending of refer messages.

Description

Call renewal method and application server

The present invention relates to the field of communications technologies, and in particular, to a call continuation method and an application server. Background technique

The unified CENTRalized EXchange service is a group of services. It is one of the important components of the current telecommunication service. It is favored by operators with diverse services, "zero hardware" investment, no change to existing networks, and easy planning. The users in the group can be traditional users such as PSTN (Public Switched Telephone Network), GSM (Global System for Mobile communication), CDMA (Code Division Multiple Access). Users such as users can also be new users such as soft terminals, IAD (Integrated Access Device), IP (Internet Protocol) phones, video terminals, and so on.

The call forwarding service in the existing unified Centrex service is implemented by call forwarding. The existing call forwarding method includes the following processes:

Terminal A and terminal B are in the process of conversation, and the application server of terminal A and the application server of terminal B participate in the call process to provide services for their respective service objects;

The terminal B initiates a call hold request to set the terminal A to the call hold state, that is, the service message can be intercommunicated, but the media stream is temporarily interrupted;

Terminal B sends a transfer request to terminal A by using a refer message;

After terminal A accepts the transfer request, terminal B sends an on-hook request to terminal A to disconnect the call channel between the two;

The terminal A sends an invitation request to the terminal C, and establishes a call between the terminal A and the terminal C. In the existing call transfer method, the terminal of the call transfer operator is required to support the call hold function. Can and support the sending of the refer message, the call holding function and the terminal that does not support the sending of the refer message cannot be used as the call transfer operator to switch the service after the call. Summary of the invention

The embodiment of the present invention provides a call continuation method and an application server, which are used to solve the problem that the existing call handover service needs to support the call hold function of the terminal as the call transfer operator and to support the sending of the refer message.

The embodiment of the invention provides a call renewal method, including:

The application server receives the call request initiated by the first terminal, where the call request carries the call renewal service code and the communication number of the second terminal;

Determining, by the application server, whether the first terminal has the right to continue the current call of the second terminal according to the first public network number of the first terminal and the communication number of the second terminal; When the terminal has the right to continue the current call of the second terminal, the application server establishes a call connection between the current party of the second terminal and the first terminal;

The application server controls the second terminal to disconnect from the current party. The communication number of the second terminal is a second public network number of the second terminal;

The application server determines, according to the first public network number of the first terminal and the communication number of the second terminal, whether the first terminal has the right to continue the current call of the second terminal, which is:

Determining, by the application server, the public network of all the continuation authorized users of the second terminal according to the second public network number and the first correspondence between all the public network numbers saved in advance and the public network number of the continuation authorized user Number

The application server determines, according to the first public network number and the public network number of all the continuation authorized users of the second terminal, whether the first terminal has the right to continue the current call of the second terminal.

The communication number of the second terminal is a short number within the group of the second terminal; The application server determines, according to the first public network number of the first terminal and the communication number of the second terminal, whether the first terminal has the right to continue the current call of the second terminal, specifically:

Determining, by the application server, the group number of the group to which the first terminal belongs according to the first public network number and the second correspondence between all the public network numbers and the group number that are stored in advance;

The application server determines, according to the group number of the group to which the first terminal belongs, the group short number of the second terminal, and all the public network numbers stored in advance and the third corresponding relationship between the group number and the group short number. a second public network number of the second terminal;

Determining, by the application server, the public network of all the continuation authorized users of the second terminal according to the second public network number and the fourth correspondence between all the public network numbers saved in advance and the public network number of the continuation authorized user Number

When the first terminal has the right to continue the current call of the second terminal, the application server establishes a call connection between the current party of the second terminal and the first terminal, specifically :

The application server acquires first media information of the first terminal;

Sending, by the application server, a re-invitation request carrying the first media information to the current party;

Receiving, by the application server, a re-invitation confirmation response returned by the current party that carries the second media information of the current party;

Returning, by the application server, a call confirmation response carrying the second media information to the first terminal;

The application server completes a media association between the first terminal and the current party The quotient forms a call channel between the first terminal and the current party.

Before the application server controls the second terminal to disconnect from the current party, the application server further includes:

And the second terminal initiates a call hold request, so that the current party is in a call hold state; or the second terminal keeps a call with the current party.

After the application server determines, according to the first public network number of the first terminal and the communication number of the second terminal, whether the first terminal has the right to continue the current call of the second terminal, the application server further includes:

When the first terminal does not have the right to continue the current call of the second terminal, the application server sends a no-renew prompt message to the first terminal.

An embodiment of the present invention provides an application server, including:

a receiving module, configured to receive a call request initiated by the first terminal, where the call request carries a call renewal service code and a communication number of the second terminal;

a determining module, configured to determine, according to the first public network number of the first terminal, and the communication number of the second terminal, whether the first terminal has the right to continue the current call of the second terminal; And when the first terminal has the right to continue the current call of the second terminal, establishing a call connection between the current party of the second terminal and the first terminal; And configured to control the second terminal to disconnect from the current party. The application server further includes:

a first memory, configured to save a first correspondence between all public network numbers and a public network number of the continuation authorized user;

The determining module includes:

a first determining submodule, configured to determine, according to the second public network number and the first correspondence saved by the first memory, a public network number of all the extended authorized users of the second terminal; a determining submodule, configured to: according to the first public network number and all of the second terminal The public network number of the authorized user is continued, and it is determined whether the first terminal has the right to continue the current call of the second terminal.

The application server further includes:

a second memory, configured to save a second correspondence between all public network numbers and the group number, a third correspondence between all the public network numbers and the group number and the group short number, and all the public network numbers and the continuation authorized users The fourth correspondence of the public network number;

The determining module includes:

a second determining submodule, configured to determine, according to the first public network number and the second corresponding relationship, a group number of the group to which the first terminal belongs;

a third determining submodule, configured to determine, according to the group number of the group to which the first terminal belongs, the intra-group short number of the second terminal, and the third corresponding relationship, the second public network number of the second terminal a fourth determining submodule, configured to determine, according to the second public network number and the fourth correspondence, a public network number of all the extended authorized users of the second terminal;

a second determining sub-module, configured to determine, according to the first public network number and a public network number of all the extended authorized users of the second terminal, whether the first terminal has the right to continue the second terminal Current call.

The connection establishment module includes:

Obtaining a submodule, configured to acquire first media information of the first terminal;

a sending submodule, configured to send, to the current party, a re-invitation request carrying the first media information;

a receiving submodule, configured to receive a re-invitation confirmation response returned by the current party that carries the second media information of the current party;

Returning to the submodule, configured to return, to the first terminal, a call confirmation response that carries the second media information;

Establishing a submodule, configured to complete a media association between the first terminal and the current party The quotient forms a call channel between the first terminal and the current party.

The application server further includes:

And a sending module, configured to: when the determining module determines that the first terminal does not have the right to continue the current call of the second terminal, send a no-renew prompt message to the first terminal.

In the technical solution provided by the embodiment of the present invention, the application server records the call information of each terminal, and does not need the terminal to support the call hold function and the refer message, and only needs the first terminal authorized by the second terminal to initiate a call request to the application server. Carrying the specific call renewal service code and the communication number of the second terminal in the call request, the application server can make the first terminal continue the call of the second terminal through some call renewal processing, and complete the current current of the second terminal. The function of the party talking to the first terminal. The technical solution is applicable to various terminals on the live network, such as supporting a C network or a G network mobile phone, a PSTN terminal, an IMS terminal, etc.; the terminal does not need to support the call holding function and supports sending a refer message. DRAWINGS

1 is a schematic flowchart of a call continuation method according to an embodiment of the present invention;

2 is a schematic structural diagram of an application server according to an embodiment of the present invention;

3 is a schematic structural diagram of another application server according to an embodiment of the present invention;

4 is a schematic structural diagram of still another application server according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a connection establishment module in an application server according to an embodiment of the present invention. detailed description

The technical problems, the technical solutions, and the advantages of the embodiments of the present invention will be more clearly described in the following description.

The technical solution provided by the embodiment of the present invention is applicable to a network system with a call renewal function, including a unified Centrex service network system, a public network system, and the like.

After the call is switched, the terminal is authorized by the terminal B during the call between the terminal A and the terminal B. The terminal C can continue the call of the terminal B by dialing the call renewal service code plus the communication number of the terminal B, and complete the function of the terminal C and the terminal A.

The existing post-call handover service is implemented by call forwarding, and the call transfer needs to support the call hold function and support the transmission of the refer message as the terminal of the call transfer operator.

In the embodiment of the present invention, the call server continues to record the call information of each terminal, and the terminal does not need to support the call hold function and supports the refer message. Only the terminal C authorized by the terminal B initiates a call request to the application server. Carrying the specific service code and the communication number of the terminal B in the call request, the application server can make the terminal C continue the call of the terminal B through some call continuation processing, and complete the function of the terminal C and the terminal A.

Call continuation is a kind of back-to-back call service, which has broad application prospects. Its advantages are: Support various terminals on the live network, such as supporting C network or G network mobile phone, PSTN terminal, IMS ( Interactive Multimedia Service, interactive multimedia) Service) terminal, etc.; does not require the terminal to support the call hold function and supports the sending of the refer message. With the rise of 3G (3rd Generation, 3rd Generation Digital Communication) networks, the convergence of CS (Circuit Switched) and PS (Packet Switched) networks has made the call renewal a very broad development and use. space.

As shown in FIG. 1 , an embodiment of the present invention provides a call continuation method, including: Step 101: An application server receives a call request initiated by a first terminal, where the call request carries a call continuation service code and a communication of the second terminal. number.

The first terminal is a terminal that requests a call renewal, and sends a call request to the application server, where the call request carries a call renewal service code, so that the application server can determine that the call renewal service needs to be performed subsequently; The communication number of the two terminals enables the application server to determine the terminal that operates the call renewal.

The communication number of the second terminal may be the second public network number of the second terminal (such as a SIM (Subscriber Identity Module) card number, UIM (User Identification) Module, user identification module) card number, etc.) or group short number. When the communication number of the second terminal is the second public network number, the first terminal and the second terminal may be any terminal in the public network; when the communication number of the second terminal is the short number in the group, the first terminal and the second terminal The terminal must be a group of business users belonging to the same group.

Step 102: The application server determines, according to the first public network number of the first terminal and the communication number of the second terminal, whether the first terminal has the right to continue the current call of the second terminal.

When the communication number of the second terminal is the second public network number of the second terminal, step 102 can be specifically implemented as follows:

Step A1: The application server determines, according to the second public network number and the first correspondence between all the public network numbers saved in advance and the public network number of the authorized user, the public network number of all the authorized users of the second terminal is determined;

The first correspondence may be pre-stored in the application server, and the first correspondence corresponds to the public network number of each public network number and the corresponding continuation authorized user.

Step A2: The application server determines, according to the first public network number and the public network number of all the above-mentioned authorized users, whether the first terminal has the right to continue the current call of the second terminal.

When the communication number of the second terminal is the intra-group short number of the second terminal, step 102 may be specifically implemented as the following steps:

Step B1: The application server determines, according to the first public network number and the second corresponding relationship between all the public network numbers and the group number that are stored in advance, the group number of the group to which the first terminal belongs;

Step B2: The application server determines the second terminal according to the group number of the group to which the first terminal belongs, the group short number of the second terminal, and the third correspondence between all the public network numbers stored in the group and the group number and the group short number. Second public network number;

Step B3: The application server determines, according to the second public network number and the fourth correspondence between all the public network numbers saved in advance and the public network number of the authorized user, the public network number of all the authorized users of the second terminal; Step B4: The application server determines, according to the first public network number and the public network number of all the above-mentioned authorized users, whether the first terminal has the right to continue the current call of the second terminal.

The first corresponding relationship, the second corresponding relationship, the third corresponding relationship, and the fourth corresponding relationship may be saved in the application server in the form of a table or a database.

Step 103: When the first terminal has the right to continue the current call of the second terminal, the application server establishes a call connection between the current party of the second terminal and the first terminal.

Step 103 can be specifically implemented as the following steps:

Step Cl, the application server acquires the first media information of the first terminal;

The first media information is used for media negotiation of SIP (Session Initiation Protocol, an application layer control protocol) signaling, including an IP address, a port number, an audio and video coding format, and the like;

Step C2: The application server sends a re-invitation request carrying the first media information to the current party.

Step C3: The application server receives a re-invitation confirmation response that is returned by the current party and carries the second media information of the current party.

Step C4: The application server returns a call confirmation response carrying the second media information to the first terminal.

Step C5: The application server completes media negotiation between the first terminal and the current party, so that a call channel is formed between the first terminal and the current party.

In addition, when the first terminal does not have the right to continue the current call of the second terminal, the application server sends a no-renew prompt message to the first terminal.

Step 104: The application server controls the second terminal to disconnect from the current party.

Specifically, the application server may send a disconnection request to the second terminal, and after the second terminal disconnects from the current party, return a disconnect confirmation response to the application server.

In addition, before performing step 104, the following steps can also be performed: The second terminal initiates a call hold request, so that the current party is in a call hold state; or the second terminal keeps a call with the current party.

If the second terminal initiates a call hold request before the second terminal disconnects from the current party, so that the current party is in the call hold state, the current party in the call hold state will hear the media server play. a prompt tone, at this time, the service message between the second terminal and the current party can be intercommunicated, but the media stream is temporarily interrupted, and the current party can switch from the call with the second terminal to the call with the first terminal. I feel that the call is interrupted and the switch is not seamless.

If the second terminal keeps talking with the current party before controlling the second terminal to disconnect from the current party, the current party is in the process of switching from the call with the second terminal to the call with the first terminal, There is no interruption in the call, and seamless switching is achieved.

The foregoing method for the continuation of the call provided by the embodiment of the present invention is that the application server records the call information of each terminal, does not need the terminal to support the call hold function, and supports the refer message, and only needs to be initiated by the first terminal authorized by the second terminal to the application server. The call request carries the specific service code and the communication number of the second terminal in the call request, and the application server can continue the call of the second terminal by using the call renewal process to complete the current terminal of the second terminal. The function of the party talking to the first terminal. The call renewal method is applicable to various types of terminals on the live network, such as supporting a C network or a G network mobile phone, a PSTN terminal, an IMS terminal, etc.; the terminal does not need to support the call holding function and supports sending a refer message.

The call continuation method provided by the embodiment of the present invention is described below by taking a mobile phone user as an example.

Specific embodiment 1

User 1 wants to continue the current call of User 2, User 1 is currently talking to User 3, User 1 and User 2 are not group service users:

Step D1, the user 1 sends a call request INVITE to the application server, where the INVITE carries the call renewal service code ac and the mobile phone number b of the user 2; Step D2: After receiving the INVITE, the application server determines, according to the call renewal service code ac, that the service type is a call renewal, according to the mobile phone number b of the user 1 and all the mobile phone numbers saved in advance and the user who has the right to continue the mobile phone number of the user. a corresponding relationship, determining that all of User 2 has the right to continue the user's mobile phone number;

Specifically, the application server searches for the mobile phone number b of the user 2 and all corresponding corresponding mobile phone numbers of the user in the first correspondence relationship;

Step D3: The application server determines whether there is a mobile phone number of the user 1 in all the user's mobile phone numbers of the user 2, if yes, proceed to step D4; if not, play the user 1 with no right to continue the prompt tone, and exit Process;

Step D4: The application server obtains the first media information of the user 1 from the call request obtained in step D2.

Step D5: The application server sends a REINVITE carrying the first media information to the user 3 (re-invitation request;);

Step D6: The user 3 returns a 200 OK response of the REINVITE to the application server, and carries the second media information of the user 3;

Step D7: The application server returns, to the user 1, a 200 OK response of the INVITE carrying the second media information.

Step D8: Complete media negotiation between the user 1 and the user 3, so that a call channel is formed between the user 1 and the user 3;

Step D9: The application server sends a BYE request to the user 2, instructing the user 2 to disconnect from the user 3;

Step D10: User 2 disconnects from user 3, and returns a 200 OK response of BYE to the application server.

Before performing step D10, the user 2 may initiate a call hold request to keep the user 3 in a call hold state; or, the user 2 may keep a call with the user 3 to implement seamless handover. The specific embodiment 1 is applicable to the public network system, and the call renewal method provided by the embodiment of the present invention enables the first terminal to continue to access the current call of the second terminal.

Specific embodiment 2

User 1 wants to continue the current call of User 2, User 1 is currently in a call with User 3, User 1 and User 2 are unified Centrex service users belonging to the same group:

Step E1: The user 1 sends a call request INVITE to the unified Centrex service application server, where the INVITE carries the call renewed service code ac and the intra-group short number of the user 2;

Step E2: After receiving the INVITE, the unified Centrex service application server determines, according to the call renewal service code ac, that the service type is a call renewal, according to the second correspondence between the mobile phone number of the user 1 and the pre-saved mobile phone number and the group number. , determining the group number of the group to which the user 1 belongs;

Step E3: The unified Centrex service application server determines the mobile phone of the user 2 according to the group number of the group to which the user 1 belongs, the short number d of the group 2 of the user 2, and the third correspondence between the pre-saved mobile phone number and the group number and the short number within the group. number;

Step E4: The unified Centrex service application server determines, according to the mobile phone number of the user 2 and all the mobile phone numbers saved in advance and the fourth correspondence corresponding to the mobile phone number of the user, determining that all the user 2 has the right to continue the mobile phone number of the user;

Specifically, the unified Centrex service application server searches for the mobile phone number of the user 2 and all corresponding mobile phone numbers of the user who are authorized to continue in the fourth correspondence relationship;

Step E5: The unified Centrex service application server determines whether the mobile phone number of the user 1 exists in all the user's mobile phone numbers of the user 2, and if yes, proceeds to step E6; if not, the user 1 does not have the right to continue the prompt. Tone, exit the process;

Step E6: The unified Centrex service application server obtains the first media information of the user 1 from the call request obtained in step E2;

Step E7: The unified Centrex service application server sends a REINVITE carrying the first media information to the user 3 (re-invitation request;); Step E8: The user 3 returns a 200 OK response of the REINVITE to the unified Centrex service application server, and carries the second media information of the user 3;

Step E9: The unified Centrex service application server returns a 200 OK response of the INVITE carrying the second media information to the user 1;

Step E10: Complete media negotiation between the user 1 and the user 3, so that a call channel is formed between the user 1 and the user 3;

Step Ell: The unified Centrex service application server sends a BYE request to the user 2, indicating that the user 2 disconnects from the user 3;

Step E12: User 2 disconnects from user 3, and returns a BYE 200 OK response to the unified Centrex service application server.

Before performing step E12, the user 2 can initiate a call hold request to keep the user 3 in a call hold state; or, the user 2 can keep a call with the user 3 to achieve seamless handover.

The second embodiment is applicable to the unified Centrex service network system. The first terminal and the second terminal belong to the same group, and the call termination method provided by the embodiment of the present invention enables the first terminal to continue to access the current call of the second terminal.

As shown in FIG. 2, an embodiment of the present invention further provides an application server, including: a receiving module, configured to receive a call request initiated by a first terminal, where the call request carries a call renewal service code and a communication number of the second terminal. ;

a determining module, configured to determine, according to the first public network number of the first terminal and the communication number of the second terminal, whether the first terminal has the right to continue the current call of the second terminal;

a connection establishing module, configured to establish a call connection between the current party of the second terminal and the first terminal when the first terminal has the right to continue the current call of the second terminal;

The disconnection module is configured to control the second terminal to disconnect from the current party.

As shown in FIG. 3, the application server shown in FIG. 2 may further include:

The first memory is used to save all public network numbers and the number of the public network number of the authorized user a correspondence relationship;

At this time, the determining module further includes:

a first determining submodule, configured to determine, according to the second public network number and the first corresponding relationship saved by the first memory, a public network number of all the extended authorized users of the second terminal;

The first determining sub-module is configured to determine, according to the first public network number and the public network number of all the authorized users, whether the first terminal has the right to continue the current call of the second terminal.

As shown in FIG. 4, the application server shown in FIG. 2 may further include:

At this time, the determining module further includes:

a second determining submodule, configured to determine, according to the first public network number and the second correspondence, a group number of the group to which the first terminal belongs;

a third determining submodule, configured to determine a second public network number of the second terminal according to the group number of the group to which the first terminal belongs, the intra-group short number of the second terminal, and the third correspondence relationship;

a fourth determining submodule, configured to determine, according to the second public network number and the fourth correspondence, the public network number of all the extended authorized users of the second terminal;

The second determining sub-module is configured to determine, according to the first public network number and the public network number of all the continuation authorized users of the second terminal, whether the first terminal has the right to continue the current call of the second terminal.

As shown in FIG. 5, the connection establishment module shown in FIG. 2 (or FIG. 3, FIG. 4) may further include: an acquisition submodule, configured to acquire first media information of the first terminal;

a receiving submodule, configured to receive a re-invitation confirmation response that is returned by the current party and carries the second media information of the current party; Returning to the submodule, configured to return, to the first terminal, a call confirmation response that carries the second media information;

And establishing a sub-module, configured to complete media negotiation between the first terminal and the current party, so that a call channel is formed between the first terminal and the current party.

In addition, the above application server may further include:

The sending module is configured to send, when the determining module determines that the first terminal does not have the right to continue the current call of the second terminal, send the unrestricted prompt message to the first terminal.

The application server provided by the embodiment of the present invention records the call information of each terminal, does not need the terminal to support the call hold function, and supports the refer message. The first terminal authorized by the second terminal only needs to initiate a call request to the application server, and carries the call request in the call request. The specific call renews the service code and the communication number of the second terminal, and the application server can make the first terminal continue the call of the second terminal through some call renewal processing, and complete the current party and the first terminal of the second terminal. The function of the terminal call.

It will be understood by those skilled in the art that all or part of the steps of the method for realizing the above facts may be completed by a program instructing related hardware, and the above program may be stored in a storage medium readable by a computer, the program When executed, the above steps are included. The above storage medium may be a ROM/RAM, a magnetic disk, an optical disk or the like.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

Claim

A call renewal method, characterized in that:

The application server controls the second terminal to disconnect from the current party.

2. The call continuation method according to claim 1, wherein:

The communication number of the second terminal is a second public network number of the second terminal;

3. The call continuation method according to claim 1, wherein:

The communication number of the second terminal is a short number within the group of the second terminal;

The application server determines, according to the first public network number of the first terminal and the communication number of the second terminal, whether the first terminal has the right to continue the current call of the second terminal, specifically: Determining, by the application server, the group number of the group to which the first terminal belongs according to the first public network number and the second correspondence between all the public network numbers and the group number that are saved in advance;

The call continuation method according to claim 1, wherein the application server is in the second terminal when the first terminal has the right to continue the current call of the second terminal. Establish a call connection between the current party and the first terminal, specifically:

The application server acquires first media information of the first terminal;

The application server completes media negotiation between the first terminal and the current party, so that a call channel is formed between the first terminal and the current party.

The call continuation method according to any one of claims 1 to 4, wherein before the application server controls the second terminal to disconnect from the current party, the method further includes: The second terminal initiates a call hold request, so that the current party is in a call hold state; or the second terminal keeps a call with the current party.

The call continuation method according to any one of claims 1 to 4, wherein the application server determines the location according to the first public network number of the first terminal and the communication number of the second terminal. After the first terminal has the right to continue the current call of the second terminal, the method further includes: when the first terminal does not have the right to continue the current call of the second terminal, the application server is to the A terminal sends a no-return prompt message.

7. An application server, comprising:

a determining module, configured to determine, according to the first public network number of the first terminal, and the communication number of the second terminal, whether the first terminal has the right to continue the current call of the second terminal; And when the first terminal has the right to continue the current call of the second terminal, establishing a call connection between the current party of the second terminal and the first terminal; And configured to control the second terminal to disconnect from the current party.

8. The application server of claim 7, further comprising:

The determining module includes:

a first determining submodule, configured to determine, according to the second public network number and the first correspondence saved by the first memory, a public network number of all the extended authorized users of the second terminal; a determining sub-module, configured to determine, according to the first public network number and a public network number of all the extended authorized users of the second terminal, whether the first terminal has the right to continue the current call of the second terminal .

9. The application server of claim 7, further comprising: a second memory, configured to save a second correspondence between all public network numbers and the group number, a third correspondence between all the public network numbers and the group number and the group short number, and all the public network numbers and the continuation authorized users The fourth correspondence of the public network number;

The determining module includes:

The application server according to claim 7, 8 or 9, wherein the connection establishing module comprises:

The application server according to claim 7, 8 or 9, further comprising: And a sending module, configured to: when the determining module determines that the first terminal does not have the right to continue the current call of the second terminal, send a no-renew prompt message to the first terminal.