WO2012068918A1

WO2012068918A1 - Method for implementing multiple call service and multiple call service system

Info

Publication number: WO2012068918A1
Application number: PCT/CN2011/079890
Authority: WO
Inventors: 章科; 熊卉玥; 周旭强
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-24
Filing date: 2011-09-20
Publication date: 2012-05-31
Also published as: CN102480572B; CN102480572A

Abstract

The present invention provides a method for implementing a multiple call service and a multiple call service system. The implementation method comprises: receiving, by a called service switching point (SSP), multiple numbers delivered by a service control point (SCP) through an extension interface between the called SSP and the SCP; and if the called SSP determines that the number of the received numbers is greater than 1, grouping the multiple numbers, and if one number answers, locating, by the called SSP, a group corresponding to the number, and processing the multiple numbers in the group; if no number answers, sending, by the called SSP, an Event Report BCSM (Event Report BCSM, ERB) to the SCP. In the technical solution, a novel mobile value-added service can be provided only by configuring a few data on the existing network device, which is safe and simple. The number of called users can be configured flexibly, two users are simply delivered to implement simultaneous ringing, and in a complex environment, multiple called numbers can be set for simultaneous ringing, thereby satisfying different market demands.

Description

Method for implementing multi-way call service and multi-way call service system

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method for implementing a multi-way call service and a road call service system.

Background technique

With the development of communication technologies and the popularity of mobile phones, the number of mobile users is increasing, and various types of communication value-added services are also increasing. Today, mobile communication has long been popular, and the status of fixed-line telephones seems to be gradually weakening. Therefore, the following situations often occur: When we call a home fixed telephone, if there is no one at home or it is temporarily inconvenient to answer, it can often only be read later. Caller ID records are recalled in the past. But in fact, the caller ID record of the fixed line is not as concerned as the mobile phone record. Therefore, China Telecom has implemented the business of binding the home phone to the Tianyi mobile phone. By dialing the home fixed line, the Tianyi mobile phone in the same number list is used. Ringing can be achieved at the same time, and after receiving at any terminal, the other ringing stops. In this way, the advantages of the mobile phone and the fixed line can be effectively combined, which not only realizes the mobilization of the fixed line, but also avoids the inconvenience caused by the lack of power of the mobile phone and the inferiority of the service area.

The above-mentioned services are multi-channel co-oscillation services. Currently, multi-channel co-vibration services on the market are generally two to three-way calls. At present, there is no technical solution to increase the number of simultaneous vibration numbers to more roads such as the nine roads.

Summary of the invention

In order to solve the above technical problem, the present invention provides a method for implementing a multi-way call service and a multi-way call service system, so as to increase the number of the same-vibration number to more channels, and is compatible with the original service processing. So as to meet the needs of multi-user co-vibration.

The present invention provides a method for implementing a multi-way call service, the method comprising:

The called service switching point (SSP) receives the multiple number delivered by the SCP through an extended interface between the service control point (SCP) and the service control point (SCP); If the called SSP determines that the number of received numbers is greater than one, the multiple number is grouped. If there is a number response, the called SSP locates the packet corresponding to the way number, and the number of the group is The road number is processed; if there is no response, the called SSP sends a Basic Call State Model (BCSM) event report (Event Report BCSM, ERB) to the SCP.

Preferably, the implementation method of the foregoing multi-call service may have the following features:

Before the called SSP receives the multiple-way number sent by the SCP through the extended interface between the SSP and the SCP, the method further includes:

The SCP carries the multi-way number in the connection message and sends it to the called SSP through the extended interface. Preferably, the implementation method of the foregoing multi-call service may further have the following features:

The SCP carries the multi-way number in the connection message and sends the message to the called SSP. The method further includes:

When the calling user calls the called user, the calling SSP interacts with the SCP to redirect the call to the called SSP;

The called SSP interacts with the SCP to trigger a multi-way call service running on the service processor of the SCP.

Preferably, the implementation method of the foregoing multi-call service may further have the following features:

When the calling user calls the called user, the calling SSP interacts with the SCP, and the call is redirected to the called SSP, including:

When the calling user calls the called user, the calling SSP analyzes the called number and analyzes it as an intelligent service, and then initiates an Initial Detection Point (IDP) message to the SCP.

After receiving the IDP message, the SCP triggers the guiding service of the multi-call service running on the service processor, where the guiding service adds an access code before the called number;

The SCP carries the access code and the called number in the connection message and sends it to the calling SSP;

After the calling SSP analyzes the access code and the called number, the caller is redirected to the called SSP.

The called SSP interacts with the SCP to trigger a multi-call service running on the service processor of the SCP, including: After the SSP analyzes the access code and analyzes it as an intelligent service, it sends an IDP message to the SCP. After receiving the IDP message, the SCP triggers the multi-way call service running on the service processor of the SCP.

The processing of the multiple number in the packet includes:

The called SSP receives and forwards the response message corresponding to the response number to the SCP, releasing the other numbers in the packet.

The present invention also provides a multi-way call service system, the system comprising a service control point (SCP), a called service switching point (SSP) and a calling SSP, wherein the SCP and the called SSP have an expansion interface; :

The SCP is configured to carry the multiple-way number in the connection message to the called SSP through the extended interface;

The called SSP is configured to receive the multiple number delivered by the SCP through the extended interface; and if it is determined that the number of received numbers is greater than one, group the multiple numbers, and if there is a number response, Then, the packet corresponding to the road number is located, and the multiple number in the packet is processed; if there is no response, the called SSP sends a Basic Call Status Module (BCSM) event report (Event Report BCSM, ERB) to the SCP.

Preferably, the foregoing multi-call service system may have the following features:

The SCP includes a service processor and a signaling interface unit (SIU); and an extension interface between the calling SSP and the SCP;

The calling SSP, when the calling user is called to call the called user, interacts with the SCP to point the call to the called SSP, so that the called SSP interacts with the SCP to trigger the multipath running on the SCP service processor. Call business.

Preferably, the foregoing multi-call service system further has the following features:

The calling SSP is further configured to: when the calling user calls the called user, analyze the called number, analyze the smart service, and initiate an IDP message to the SCP; and receive the connection message carrying the access code and the called number. After analyzing the access code and the called number, and directing the call to the called SSP;

The SCP is further configured to: after receiving the IDP message, trigger a guiding service of a multi-way call service running on a service processor, where the guiding service adds an access code before the called number; The access code and the called number are carried in the connection message and sent to the calling SSP.

The called SSP is further configured to receive and forward a response message corresponding to the response number to the SCP, and release other numbers in the packet.

The present invention also provides a service control point (SCP), which is applied to a multi-call service system, where the SCP includes a delivery unit, and the delivery unit is configured to pass between a call and a called service exchange point (SSP). The first extended interface carries the multiple number in the connection message and sends the message to the called SSP.

Preferably, the foregoing SCP further includes an interaction unit, a service processor, and a signaling interface unit (SIU); and a second extension interface between the calling SSP and the SCP;

The interaction unit is configured to: when the calling user calls the called user, interact with the calling SSP, so that the calling SSP points the call to the called SSP, so that the called SSP and the called The SCP interaction triggers a multi-way call service running on the service processor.

Preferably, the foregoing SCP further includes a triggering unit, where the triggering unit is configured to: after receiving the IDP message initiated by the calling SSP, trigger a guiding service of a multi-way call service running on the service processor, where the guiding The service adds an access code before the called number;

The sending unit is further configured to: send the access code and the called number in the connection message to the calling SSP.

The present invention also provides a called service switching point (SSP), which is applied to a multi-call service system, and the SSP includes a transceiver unit and a processing unit, wherein

The transceiver unit is configured to: receive, by using a first extension interface between the service control point (SCP), the multiple-way number sent by the SCP; and send a basic call to the SCP after receiving the notification of the processing unit a status module (BCSM) event report (Event Report BCSM, ERB); the processing unit is configured to: when the number of the multiple number is greater than one, group the multiple numbers, and if there is a number response, locate the The packet corresponding to the response number, and processing the multiple number in the packet; if there is no response, sending a Basic Call Status Module (BCSM) event report (Event Report BCSM, ERB) to the SCP.

Preferably, in the foregoing SSP, the transceiver unit is further configured to: receive and forward a response message to the SCP for the response number, and release other numbers in the packet. The method for implementing the multi-way call service and the multi-way call service system need not change the existing network hardware and software devices, and only need to configure a small amount of data on the existing network device to provide a brand-new mobile value-added service, which is safe and simple; The number can be flexibly configured, and it is easy to send two users to achieve the same vibration. For example, China Telecom's Tianyi mobile phone is connected with the home phone. In a complicated environment, multiple called numbers can be set to co-vibrate, which can adapt to different markets. At the same time, the above technical solutions do not require the end user to go to the business hall for any formalities, and the business can be quickly promoted. In addition, the above technical solutions can be used in a variety of occasions, while attracting customers while enriching value-added services, the called The number is not limited to one type, including fixed and mobile numbers and any combination thereof, providing customers with a practical value-added service. BRIEF abstract

FIG. 1 is a schematic diagram of a network element connection according to an embodiment of the present invention;

2 is a schematic structural diagram of an embodiment of a multi-call service system according to an embodiment of the present invention;

3 is a flow chart of an embodiment of a method for implementing a multi-way call service according to an embodiment of the present invention;

4 is a signaling flowchart of an embodiment of a method for implementing a multi-way call service according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of a service control process provided by an embodiment of the present invention.

Preferred embodiment of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

As shown in FIG. 1 , a schematic diagram of a network element connection provided by an embodiment of the present invention, and a method for implementing the multi-way call service, by introducing a multi-way call service system 1 without changing an existing network device When the calling user 2 initiates a call, the service is added before the G network number by guiding the service. The code is transferred to the fixed network service flow, and the core network directs the call to the service processor of the multi-way call system according to the access code, triggers the multi-way call service, and under the service control, the system initiates a call to the multi-way called user, multi-way The called user 3 rings at the same time. When the mobile number called user hangs up and does not answer, other calls continue. After one of the responses, the multi-call service system releases the other users in the service indication and enters the normal call.

The structure diagram of the foregoing multi-call service system can be seen in FIG. 2. The system includes a called service switching point (SSP) 11, a service control point (SCP) 12, and a calling party SSP13, and the SCP12 is further configured by a signaling interface unit (SIU). 121 is formed by the service processor 122, and the multi-call service is loaded and run on the service processor. The SIU and the service processor are internal communication interfaces. The SCP, the called SSP, and the calling SSP are all connected to the core network through the standard No.7 signaling interface. Therefore, the system is introduced without modifying the existing network equipment. The required link, voice channel resources and routing data can be used.

In this embodiment, the interface between the SSP and the SCP is extended, so that the SCP side can send the multiple-way number to the called SSP side. Specifically, through the INAP interface between the called SSP and the SCP, the connect message can send 9 numbers to the called SSP; after the called SSP finds the SCP with 9 numbers, it can concurrently call, if all If the call fails, the Basic Call State Model (BCSM) event report (Event Report BCSM, ERB) is returned to the Service Control Point (SCP), and the Service Control Point (SCP) is notified of the route failure; if there is any response , then automatically hang up the other 8 calls; and inform the SCP of the serial number information.

The SCP is configured to carry the multi-way number in the connection message to the called SSP through the extended interface; the called SSP is configured to receive the multiple-way number sent by the SCP through the extended interface; and if it is determined If the number of received numbers is greater than one, the multiple numbers are grouped. If there is a number response, the corresponding packet is located, and the multiple numbers in the group are processed; if there is no response, The called SSP sends a Basic Call Status Module (BCSM) event report (Event Report BCSM, ERB) to the SCP. When the calling SSP is set as the calling user, the user is called to the called SSP, and the called SSP interacts with the SCP to trigger the multi-call service running on the service processor of the SCP.

Preferably, when the calling SSP is configured to call the called user as the calling user, the called number is analyzed, analyzed as an intelligent service, and an IDP message is sent to the SCP; and the connection message carrying the access code and the called number is received. After that, analyze the above access code and called number, and point the call to the called party. SSP; the foregoing SCP is configured to trigger the guiding service of the multi-call service running on the service processor after receiving the IDP message, where the guiding service adds an access code before the called number; and the access code and the called number The carry is sent to the calling SSP in the connection message.

In addition, the above-mentioned called SSP may be further configured to receive and forward a response message corresponding to the answer number to the SCP, and release other numbers in the packet.

Preferably, the SCP side can separately define a new service operation (connect extension), which can send a multi-way number, such as a 9-way number, in order to not affect the existing other services; The concurrent call function, the SCP side performs corresponding processing on this service operation and encodes it so that it can be compatible with the INAP connect operation of 9 numbers. Then, when the operation is sent to the called SSP through the SCP, The called SSP performs corresponding decoding and processing. After receiving the 9-way number sent by the SCP, the called SSP performs the following processing: First, it determines the number of received numbers. If there is only one number, it goes to the original normal process. If it is determined that there are multiple numbers, then The 9-way call is divided into three groups, the first group (1, 2, 3), the second group (4, 5, 6), and the third group (7, 8, 9). The purpose of the grouping is When multiple calls are coming down at the same time, they can be processed in batches, and then after being located in one group, they can be processed by using the original module functions, avoiding the cumbersomeness of adding additional processing.

In addition, it should be noted that those skilled in the art should understand that the 9-way multi-way call service in this embodiment.

The above multi-call service system does not need to change the existing network hardware and software equipment, and only needs to configure a small amount of data on the existing network equipment to provide a brand-new mobile value-added service, which is safe and simple; the number of called users can be flexibly configured, and can be simply underground. Send two users to achieve the same vibration, such as China Telecom's Tianyi mobile phone and home phone binding, in a complex environment, you can set multiple called numbers to co-vibrate, can adapt to different market needs; At the same time, the above technical solutions are not The terminal user needs to go to the business hall to go through any formalities and can use it. The business can be quickly promoted. In addition, the above technical solutions can be used in various occasions. While enriching value-added services to attract customers, the called number is not limited to one type. Including fixed words and mobile numbers and any combination of them, providing customers with a practical value-added service.

FIG. 3 is a flowchart of an embodiment of a method for implementing a multi-call service according to an embodiment of the present invention, where the method includes: Step 301: The called SSP receives the multiple number delivered by the SCP through the extended interface with the SCP.

Before the step, the method may further include: the SCP carries the multi-way number in the connection message and sends the message to the called SSP through the extended interface;

Step 302: If the called SSP determines that the number of received numbers is greater than one, group the multiple multiplex numbers.

Step 303, it is determined whether there is a way to answer, if there is a way to answer, step 304 is performed, if there is no answer, step 305 is performed;

Step 304: The called SSP locates the packet corresponding to the road number, and processes the multiple number in the packet;

The called SSP receives and forwards the response message corresponding to the response number to the SCP, and releases other numbers in the packet;

Step 305: The called SSP sends a Basic Call Status Module (BCSM) event report (Event Report BCSM, ERB) to the SCP.

The following is a detailed description of the implementation process of the multi-way call service in an embodiment. As shown in FIG. 4, it is a signaling flowchart of an implementation method of the multi-way call service provided by the embodiment of the present invention. In this embodiment, 4: The calling party is A, the number is a, the called user is B, and the number is b. The implementation method of the multi-call service includes:

Step 401: User A initiates a call, and the called number is a mobile number b (which may be a virtual number or an actual number), and MSCa (A current MSC/VLR) analyzes the number B and points the call to the multi-call service system. Caller SSP;

Step 402: The calling SSP authenticates the number b, and queries the HLR to query the called subscription information. Step 403: The HLR reports the called subscription information of the number b to the calling SSP.

Step 404: The calling SSP analyzes the number b, analyzes the call into an intelligent service, and initiates an initial checkpoint (IDP) message to the SCP. After receiving the IDP message, the SCP triggers the guiding service of the multi-call service running on the service processor ( G network service), the guiding service processes the called number, and adds a prefix (Prefix) in front of the called number b;

Step 405: The SCP sends a Request Report BCSM Event (RRBE), Apply Charging (AC) message to the calling SSP, requesting Call event monitoring and application billing;

Step 406: The SCP sends a Connect (Connect) message to the calling SSP, where the calling number is a, and the called number is Prefix + b;

Step 407: The calling SSP sends a Send Routing Info (SRI) message to the HLR, requests the roaming number of B, the HLR returns a response SRI_ack, and the SCP obtains the roaming number MSRNb of B (if it is a virtual number, since there is no Roaming number, there is no such step);

Step 408, the calling SSP analyzes the Prefix+b, points the call to the MSCb (the current MSC/VLR of the B), and the MSCb connects to the B; after the MSCb analyzes the number Prefix, the call is directed to the called SSP in the multi-call calling service system;

Step 409: The called SSP analysis number Prefix is analyzed as an intelligent service call, and an IDP message is sent to the SCP. After receiving the IDP message, the SCP triggers a multi-way call service (fixed network service) running on the service processor, and the service is called. The number b is processed, and the number corresponding to the homophone number table set by the user (Numl, Num2...Num9) is found by looking up the table, wherein Numl, Num2...Num9 may be a mobile number or a fixed number;

Step 410: The SCP sends an RRBE and an AC message to the called SSP, requesting call event monitoring and applying for charging;

Step 411: The SCP sends a Connect message to the SSP, where the calling number is a, and the called number is Num 1 , Num2... Num9;

Step 412: After the called SSP number is received, the MSCb is replied with an address full message ( ACM );

Step 413: The called SSP sends an IAM to the MSCb, with the outgoing number (Num2, Num2...Num9), and the MSCb replies to the called SSP with an ACM after each address is received; Step 414, The SSP sends an address full message (ACM) to the MSCA to start ringing. Step 415: If the Num4 is connected to the call, the MSCb sends a response message (ANM) to the called SSP, and the called SSP reports to the SCP after receiving the ANM. a response message ( o-Answer );

Step 416, the called SSP releases all the phones except the answering call, and stops ringing; Step 417, the called SSP sends back a response message (ANM) to the MSCa, and the calling user A makes a call with the called Num4;

Step 418: The calling party hangs up, and the calling SSP reports the charging information message (ACR) and the BCSM. The event report message (ERB), after receiving the request event, the SCP sends a Release (Call) call message to the SSP to release the caller;

Step 419: MSCa sends a REL message to the called SSP, requesting release of the called side, and after receiving the called SSP, sending a REL message to the MSCb;

Step 420: The called SSP reports a charging information message (ACR) and a BCSM event report message (ERB) to the SCP, and the SCP sends a Release Call to the called SSP after receiving the SCP;

Step 421: After the release is completed, the called SSP sends an RLC message to the MSCa; the process ends normally.

The foregoing embodiment describes in detail the process of implementing a multi-way call. The following is a complete flow chart of the service control when the above technical solution is implemented. As shown in FIG. 5, the process includes:

Step 501: Calling in a fixed number;

The calling user calls the fixed number;

Step 502: Call all mobile terminals in the same number list;

The SCP calls all mobile terminals in the list of the same-vibration number set by the called user;

Step 503, determining whether there is a terminal response, if yes, executing step 504, otherwise, performing step 505;

The called SSP determines whether there is a terminal response. If yes, it accesses the normal call and releases the other terminal number; otherwise, the call is continued;

Step 504: Initiating a call to answer the terminal, releasing other call attempts; ending the operation; Step 505, continuing the call attempt until the calling user terminates the call; the operation ends.

There are various reasons why the terminal does not answer, for example, the user may be busy, not connected, or not answered.

The implementation of the multi-way call service can enrich the value-added service types of mobile operators and meet the needs of different types of communication services. When used, there is no need to replace or upgrade existing network devices, and the system implementation is simple and business-oriented. The advantages of rapid promotion, diversified humanization of application scenarios, and both economic and social benefits. Compared with other similar services, the above technical solutions have the following characteristics: (1) The corresponding interface is extended on the basis of the original multi-way calling system, and the interface is changed from the platform to the service switching point, so that the number is matched The number of processing is larger (2) In the processing of multi-way numbers, the implementation of packet processing is used. Currently, 9 channels are divided into 3 groups. If the number is extended to 12 or more, the same can be used. The group processing method only needs to add one or several groups of numbers on the original basis, and the processing of each number is completely compatible with the previous mature processing method, which reduces the complexity of the code, saves the cost, and increases the stability of the system. Sex.

The present embodiment further provides a service control point (SCP), which is applied to a multi-call service system, where the SCP includes a sending unit, and the sending unit is configured to: communicate with a called service exchange point (SSP) The first extended interface carries the multiple number in the connection message and sends it to the called SSP.

The embodiment further provides a called service switching point (SSP), which is applied to a multi-call service system, where the SSP includes a transceiver unit and a processing unit, where

Preferably, in the foregoing SSP, the transceiver unit is further configured to: receive and forward The response message of the response number is sent to the SCP, and other numbers in the packet are released.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program that instructs the associated hardware to be stored in a computer readable storage medium, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The technical solution of the present invention is not limited to any particular form of hardware and software combination.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the technical solutions of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

The foregoing technical solution provides a method for implementing a multi-way call service and a multi-way call service system, so as to increase the number of the same-vibration number to more channels, and is compatible with the original service processing, thereby satisfying multi-user co-oscillation. Demand. The method and system do not need to change existing network hardware and software devices, and only need to configure a small amount of data on the existing network device to provide a brand new mobile value-added service, which is safe and simple; the number of called users can be flexibly configured, and can be simply sent underground. The two-way user realizes the same vibration; in addition, the above method and system can be used in various occasions, while the rich value-added service attracts customers, the called number is not limited to one type, including fixed words and mobile numbers and any The combination provides customers with a practical value-added service.

Claims

Claim

1. A method for implementing a multi-way call service, comprising:

The called service switching point (SSP) receives the multiple number delivered by the SCP through an extended interface with the service control point (SCP);

And if the called SSP determines that the number of received numbers is greater than one, grouping the multiple numbers, and if one of the multiple numbers has a number response, the called SSP locates the group corresponding to the answered number. And processing the multiple number in the packet; if there is no response, the called SSP sends a basic call state module (BCSM) event report (ERB) to the SCP.

The method for implementing the multi-way call service according to claim 1, wherein before the step of receiving the multi-way number sent by the SCP by the extended interface between the called SSP and the SCP, The method also includes:

The SCP carries the multiple number in the connection message and sends the multiple number to the called SSP.

The method for implementing the multi-way call service according to claim 2, wherein before the step of the SCP carrying the multiple-way number in the connection message and sending the message to the called SSP through the extended interface The method further includes:

When the calling user calls the called user, the calling SSP exchanges the call with the called SSP by interacting with the SCP;

The called SSP interacts with the SCP to trigger a multi-call service running on a service processor of the SCP.

The method for implementing the multi-call service according to claim 3, wherein, when the calling user calls the called user, the calling SSP interacts with the SCP to redirect the call to the called party. The steps of the SSP include:

When the calling user calls the called user, the calling SSP analyzes the called number, analyzes the smart service, and initiates an initialization check point (IDP) message to the SCP;

After receiving the IDP message, the SCP triggers a pilot service of a multi-way call service running on the service processor, where the bootstrap service adds an access code before the called number; The SCP carries the access code and the called number in the connection message and sends the call to the calling SSP;

After the calling SSP analyzes the access code and the called number, the call is redirected to the called party

SSP.

The method for implementing a multi-call service according to claim 4, wherein the called party

The step of the SSP interacting with the SCP to trigger the multi-call service running on the service processor of the SCP includes:

The called SSP analyzes the access code, and after analyzing the smart code, sends an IDP message to the SCP, and after receiving the IDP message, the SCP triggers multiple paths running on the service processor of the SCP. Call business.

The method for implementing the multi-way call service according to any one of claims 1-5, wherein the step of processing the multiple-way number in the packet corresponding to the response number comprises: The SSP receives and forwards a response message corresponding to the response number to the SCP, releasing other numbers in the packet.

7. A multi-call service system, including a service control point (SCP) and a called service exchange point.

(SSP) and the calling SSP, the first extended interface is between the SCP and the called SSP; wherein: the SCP is set to: carry the multiple number in the connection message by using the first extended interface Is sent to the called SSP;

The called SSP is configured to: receive the multiple number sent by the SCP by using the first extended interface; and if it is determined that the number of received numbers is greater than one, group the multiple numbers, if any When the number is answered, the packet corresponding to the number of the response is located, and the multiple number in the packet is processed; if there is no response, the basic call state module (BCSM) event report (ERB) is sent to the SCP.

The multi-call service system according to claim 7, wherein the SCP includes a service processor and a signaling interface unit (SIU); and a second extension interface is between the calling SSP and the SCP;

The calling SSP is set to: when the calling user calls the called user, by interacting with the SCP, the call is directed to the called SSP, so that the called SSP interacts with the SCP to trigger the operation. Multi-way call service on the service processor of the SCP.

9. The multiple call service system according to claim 8, wherein:

The calling SSP is configured to: when the calling user calls the called user, analyze the called number, analyze the smart phone, and initiate an initialization check point (IDP) message to the SCP; After receiving the connection message carrying the access code and the called number, analyzing the access code and the called number, and directing the call to the called SSP;

The SCP is configured to: after receiving the IDP message, trigger a guiding service of a multi-way call service running on the service processor, where the guiding service adds the access code before the called number; And transmitting the access code and the called number in the connection message to the calling SSP.

The multi-call service system according to any one of claims 7-9, wherein: the called SSP is further configured to: receive and forward a response message corresponding to the answer number to the SCP, and release Drop the other numbers in the group.

A service control point (SCP) is applied to a multi-call service system, the SCP includes a sending unit, and the sending unit is configured to: pass the first between the called service exchange point (SSP) The extension interface carries the multi-way number in the connection message and sends it to the called SSP.

12. The SCP of claim 11, further comprising an interaction unit, a service processor, and a signaling interface unit (SIU); a second extension interface between the calling SSP and the SCP;

The SCP of claim 12, further comprising a triggering unit, wherein the triggering unit is configured to: trigger the multi-way call service running on the service processor after receiving the IDP message initiated by the calling SSP The guiding service, the guiding service adds an access code before the called number;

14. A called service switching point (SSP), which is applied to a multi-call service system, where the SSP includes a transceiver unit and a processing unit, where The transceiver unit is configured to: receive, by using a first extension interface between the service control point (SCP), the multiple-way number sent by the SCP; and send a basic call to the SCP after receiving the notification of the processing unit Status Module (BCSM) Event Report (ERB);

The processing unit is configured to: when the number of the multiple number is greater than one, group the multiple number, if there is a number response, locate the packet corresponding to the answer number, and multipath in the group The number is processed; if there is no response, a Basic Call Status Module (BCSM) Event Report (ERB) is sent to the SCP.

The called SSP according to claim 14, wherein the transceiver unit is further configured to: receive and forward a response message to the SCP for the response number with the response number, and release other numbers in the packet.