JP5364005B2 - Special number service providing method, special number service providing system and special number node in IP network - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To economically provide a special number service in which a communicator provided in the existing subscriber telephone network is intervened to perform call connection to the terminal of a request destination in an IP network. <P>SOLUTION: A function element dependent upon the special number service is arranged in a media gateway controller (MGC), an application server (AS) and a special number node, and no function element dependent upon the special number service is arranged in many media gateways (MG) that are installed. Media exchange between a user terminal and the terminal of a request destination is a "media non-termination system" in which no termination coupling is performed inside the special number node. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a technique for providing a special number service such as telephone number guidance provided in an existing subscriber telephone network in an IP (Internet Protocol) network.

  In an existing subscriber telephone network (hereinafter abbreviated as “PSTN (Public Switched Telephone Network)” where appropriate), as a kind of telephone service, a predetermined three-digit special number (104, 102, 100, etc.) is dialed. A service provider called a communicator responds to a call and provides a service (hereinafter referred to as a “special number service”) for making a call connection or providing information to a requested terminal according to a request from a user. (See Non-Patent Documents 1 and 2).

  Conventionally, many of the functions for call connection to the communicator terminal and call connection to the requested terminal that are necessary for providing these special number services have been redundantly deployed in many subscriber exchanges installed. It was economically inefficient.

  On the other hand, in the IP network, an IP telephone service is provided by a media gateway controller (MGC: Media Gateway Controller) that controls a call control function and a media gateway (MG: Media Gateway) that controls a bearer transfer function. And while a large number of MGs that accommodate a plurality of subscriber terminals are installed in units of areas as in the case of a conventional subscriber exchange, one MGC is installed for each of a plurality of areas, so a small number of installations are sufficient. . In addition, the number of application servers (AS) deployed to provide additional communication services is determined according to the necessary processing capacity, but is usually much smaller than that of MG. .

NTT East, “Number Guide Service”, [online], Internet <URL: http://web116.jp/phone/numguide/index.html> NTT East, “Other charges (100 calls, collect calls)”, [online], Internet <http://web116.jp/phone/fare/other.html>

  If the conventional special number service technology is directly applied to the IP network to provide the same service as the conventional one in the IP network, call connection to the communicator terminal of the existing subscriber exchange or There is a problem that many functions for call connection to the requested terminal need to be redundantly deployed in all MGs installed in large numbers, which is economically inefficient.

  The present invention has been made to solve the above-mentioned problems, and is provided with an existing subscriber telephone network by appropriately functioning each device that provides telephone service in the IP network. The issue is to provide economically equivalent services.

In order to solve the above-mentioned problems, the present invention is a method for providing an IP network of a special service that performs call connection to a requested terminal through a communicator, and accommodates the user terminal of the special service user The media gateway transmits the dial number of a predetermined special service dialed at the user terminal to the media gateway controller, and the dial number of the special service is transmitted from the media gateway controller or the media gateway controller. The application server transmits the dial number of the special service when the call is made to the special node in which the communicator terminal providing the special service corresponding to the transmitted dial number is accommodated, and the use Between the user terminal and the communicator terminal After generating a first speech channel, transfer calls the while maintaining the first call path for receiving a service request from special number service users, to the request destination terminal from the communicator terminal Alternatively, a media gateway that makes a call with information indicating that it is an interrupted call and accommodates the request destination terminal, and the request destination terminal established by the request destination terminal responding to the call, The second call path with the communicator terminal is combined with the first call path in cooperation with the media gateway accommodating the user terminal in accordance with a call path combining instruction signal issued from the special number node. Thus, a first feature is to generate a connected call path between the user terminal and the requested terminal .

  As a result, the media gateway that accommodates the user terminal and the media gateway that accommodates the request destination terminal have special functions for generating a connected call path between the user terminal and the requester terminal through the communication. No need to prepare.

The system for providing a special number service according to the present invention includes a media gateway that accommodates a plurality of subscriber terminals and controls bearer transfer between the subscriber terminals, and a media gateway controller that controls call connection between the subscriber terminals. A special number service providing system that provides a special number service for providing a call connection to a requested terminal via a communicator in an IP network provided with a special number node that accommodates the communicator terminal. by dialing a predetermined dial number is determined in advance from the user terminal for each type of special number service, arrives at a predetermined said special program node, by the communicator terminal responds to the incoming call, and the user terminal the communicator first speech path between the data terminal is generated, the communicator terminal The call destination terminal responds to the call by adding information indicating that the call is a transfer call or an interrupt call while maintaining the first call path. To generate a second call path between the requested terminal and the communicator terminal, and the special number node sends a connection guidance voice message to the second call path, and then sends the first call path to the first call path. A call path combination instruction signal for instructing the combination of the second call path and the second call path is transmitted to both the media gateway accommodating the user terminal and the media gateway accommodating the requested terminal. and, the media gateway of the both receiving the speech channel coupling instruction signal, generates a connection call path coupled between said second call path between said first call path in cooperation with each other And wherein the Rukoto.

The special number node of the present invention includes a media gateway that accommodates a plurality of subscriber terminals and controls bearer transfer between the subscriber terminals, and a media gateway controller that controls call connection control between the subscriber terminals. When a communicator terminal that is connected to the IP network and provides a special service for making a call connection to the requested terminal is accommodated, and the communicator terminal responds to an incoming special number dial from the user terminal of the special number service user In addition, a first call path between the user terminal and the communicator terminal is generated, and while the first call path is maintained, the transfer call or interrupt from the communicator terminal to the request destination terminal a call as a call, a second call between the communicator terminal and the request destination terminal that is generated when the request destination terminal answers the the calling To After sending the announce voice message to the scan, the speech path coupling instruction signal instructing the binding of said second call path between said first call path, and the media gateway for receiving the user terminal And transmitting to both the media gateway accommodating the requested terminal.

  According to the present invention, since it is not necessary to provide a functional element depending on a special service in a large number of media gateways installed, a service equivalent to the special service provided in the existing subscriber telephone network is It can be provided economically on the net.

It is explanatory drawing which shows the example of function deployment and operation | movement in the existing subscriber telephone network. It is explanatory drawing which shows the example of function deployment and operation | movement when AS is deployed in an IP network. It is explanatory drawing which shows the example of function deployment and operation | movement when AS function is integrated into MGC in an IP network. It is explanatory drawing which shows the example of function deployment and operation | movement when centralized function deployment is carried out to a special number node in an IP network. It is a sequence chart which shows the example of a connection sequence to the communicator in the existing subscriber telephone network. It is a sequence chart which shows the example of a connection sequence to a communicator when AS is deployed in an IP network. It is a sequence chart which shows the example of a connection sequence to a communicator when AS function is integrated into MGC in IP network. It is a sequence chart which shows the example of a connection sequence to a communicator when centralized function deployment is carried out to a special number node in IP network. It is a sequence chart which shows the example of a connection sequence to the communicator from the user terminal of another provider in an IP network. It is a sequence chart which shows the example of a service sequence at the time of telephone number guidance in the existing subscriber telephone network. It is a sequence chart which shows the example of a service sequence at the time of telephone number guidance when AS is deployed in an IP network. It is a sequence chart which shows the example of the 1st connection sequence to the request destination in the existing subscriber telephone network. It is a sequence chart which shows the 2nd example of a connection sequence to the request destination in the existing subscriber telephone network. It is a sequence chart which shows the example of the 1st connection sequence to the request destination in an IP network. It is a sequence chart which shows the 2nd example of a connection sequence to the request destination in an IP network. It is a sequence chart which shows the 3rd example of a connection sequence to the request destination in an IP network. It is a sequence chart which shows the example of a connection sequence from the IP network to the request destination of the existing subscriber telephone network. It is a sequence chart which shows the example of a service sequence at the time of call information guidance in the existing subscriber telephone network. It is a sequence chart which shows the example of a service sequence at the time of call information guidance in an IP network.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described in detail with reference to the drawings as appropriate.

<Outline of special number service>
In the existing subscriber telephone network, as a special number service provided by the intervention of a communicator, a dialing number “104” number guidance service, a dial number “100” number 100 call (call information provision) service, a dial number “102” "A temporary reception service" and a collect call service of the dial number "106". In these special number services, a call between the service user and the requested user is enabled after the communicator performs the call connection operation to the requested terminal according to the request from the service user (non-patented). References 1 and 2). The outline of each service is as follows.

[Number guidance service] (dial number: 104)
This is a paid service in which a communicator searches and guides a subscriber's telephone number from an address or a registered name in a telephone directory. Further, the communicator performs a call connection operation to the telephone number of the guidance destination by using the pay option dial 104 service.

[No. 100 call (call information provision) service] (dial number: 100)
This is a service in which the communicator performs call connection operation to the requested telephone number and notifies the call charge and the call time by returning the call to the service user after the call is finished. Call charges that are higher than usual are charged.

[Temporary reception service] (Dial number: 102)
This is a service in which a communicator performs call connection operations for telephone numbers registered in advance as disaster priority telephones in the event of a disaster. Even if the connected terminal is in a call with another, the communicator interrupts the call and guides the incoming call.

[Collect Call Service] (Dial number: 106)
This is a toll-payment-paid service in which the communicator performs call connection operation to the requested telephone number and connects to the service user after obtaining the consent to charge the call charge to the called telephone number. Call charges that are higher than usual are charged.

<Functional deployment in existing network>
First, an example of function deployment and operation in an existing subscriber telephone network (PSTN) will be described with reference to FIG. As shown in FIG. 1, in a subscriber telephone network (PSTN) 100, a special number exchange 50 that accommodates a communicator terminal 70 is installed and used by a user of a special number service (hereinafter referred to as “user”). There are three types: a calling exchange 20 that is a subscriber exchange that accommodates the user terminal 11A, a destination exchange 21 that is a subscriber exchange that accommodates a request destination terminal 12A for which a call connection is requested by the user, and a special exchange 50. Special number service is provided by linking.

  As an example of typical operation, first, by dialing a predetermined special number (for example, “104”) at the user terminal 11A, the special number exchange is exchanged from the originating exchange 20 via the common line network (relay exchange group). 50 is connected, and a first call communication path is generated between the communicator terminal 70 of the communicator that has performed the response operation and the user terminal 11A. Next, the communicator that receives the connection request from the user performs a call connection operation to the request destination terminal 12A, and a second call communication path between the responding request destination terminal 12A and the communicator terminal 70 is generated. The Then, the generated first call call path and the second call call path are coupled to each other inside the special number exchange 50, thereby generating a linked call path between the user terminal 11A and the requested terminal 12A. Is done.

  In order to provide such a special number service, at least the following functional elements specific to the special number service and general-purpose call control functional elements are required.

[Service judgment function]
Based on the special number dial number, the type of the corresponding special service and the availability of service provision are determined.

[Number translation function]
A special number exchange that provides the corresponding special number service is determined from the special number dial number, and is converted into number information (A to J) of the incoming number for connecting to the special number exchange.

[Dial number setting function]
A special number dial number to be notified when a call is connected to the special number exchange is set in the call control signal.

[Billing / non-billing connection function]
When a call control signal for setting a call path is transmitted, charging / non-charging of a call charge is instructed.

[Billing signal generation function]
A billing signal corresponding to the service content is generated and transmitted.

[Billing information generation function]
A CDR (Charging Data Record) is generated based on the charging signal.

[Storage processing function]
An instruction for storing coin or card call frequency is given to a terminal such as a public telephone that requires immediate billing, and the storage result is transmitted.

[Exchange connection function]
The call connection is made to the telephone number for which connection is requested.

[Interrupt function]
When the connection request is in a call, the call is interrupted to guide the incoming call.

[Call path combination function]
A communicator call (first call) and a service call (second call) are combined to generate a concatenated call path.

[Service conflict function]
Performs call contention control corresponding to services required for incoming calls, such as call interruption.

[Electronic number guidance system access function]
The electronic number guidance system is accessed to search for the telephone number provided by the communicator through the number guidance service.

  As shown in FIG. 1, in the existing subscriber telephone network (PSTN) 100, service determination, number translation, dial number setting, billing / non-billing connection, billing information generation, storage, which are functional elements as the originating exchange 20 It is economically inefficient because it is necessary to deploy a function such as processing and a service competition function as a functional element as the destination exchange 21 in a manner depending on the special number service in all the subscriber exchanges installed in large numbers. In addition, there is a problem that it is difficult to improve the special number service or add a new special number service.

  Therefore, in providing a special number service equivalent to the conventional one in the IP network, in the present invention, as in the existing subscriber exchange, a large number of MGs installed in units of areas have no functional elements depending on the special number service. By avoiding the deployment, the above problems were solved.

  The main points and specific examples of function deployment in the IP network according to the present invention will be described below.

<Key points for function deployment in IP networks>
(1) There are four devices that are the targets of the function deployment of the special service in the IP network: MG, MGC, AS, and special number nodes having functions similar to those of the conventional special number exchange.
(2) Installed PSTN-GW (Public Switched Telephone Network-Gateway) interworking PSTN signaling on IP network to enable seamless service provision between existing PSTN and other operator networks To do.

<Functional deployment example in IP network 1: AS deployment example>
FIG. 2 shows an example of function deployment and operation when AS is deployed. In the IP network / AS deployment example 201 shown in FIG. 2, functional elements such as AS routing, number translation, dial number setting, billing / non-billing connection, and service contention are deployed in the MGC 30, and service determination and billing are performed in the AS 40. Deploy functional elements for information generation. In addition, a function element for storing and generating a connected call path is provided in the originating MG 25 that accommodates the user terminal 11B, and a function element for generating a connected call path is provided in the destination MG 26 that accommodates the requested terminal 12B. In addition, the special number node 55 that accommodates the communicator terminal 70 is provided with functional elements similar to those provided in the conventional special number exchange.

  As an example of typical operation, first, a call connection from the calling MG 25 to the special number node 55 via the MGC 30 and the AS 40 is performed by dialing a predetermined special number (for example, “104”) at the user terminal 11B. A first call communication path is generated between the communicator terminal 70 and the communicator terminal 70 for which a response operation has been performed. Next, the communicator that receives the connection request from the user performs a call connection operation to the request destination terminal 12B at the communicator terminal 70, and the second call communication path with the request destination terminal 12B that responds to the incoming call. Is generated. Then, in accordance with an instruction from the special number node 55, the originating MG 25 and the terminating MG 26 cooperate to combine the first call call path and the second call call path, so that the user terminal 11B and the request destination terminal 12B A connected call path between is generated.

  As shown in FIG. 2, only functional elements necessary for providing a general telephone service are provided in the originating MG 25 and the terminating MG 26, and all functional elements dependent on the special number service are MGC 30, AS 40 and special number node 55. Distributed and deployed. Furthermore, by providing the AS with functions for determining service and generating billing information, which are functional elements that can be shared with other services, it is possible to provide economical services.

<Functional deployment example 2 in IP network: AS-MGC aggregation deployment example>
FIG. 3 shows an example of function deployment and operation in which AS is not required by adding and deploying the functional elements of AS 40 shown in FIG. 2 to MGC 30. In an initial stage of IP network construction where there is not such a wide variety of additional communication service provision, the AS function (within the broken frame) is set to MGC 30 as in the IP network / AS-MGC aggregation deployment example 202 of FIG. By concentrating on the network, it is possible to reduce the cost of the entire network. Since the operation in this embodiment is the same as that in FIG. 2 except for the signal transmission route, detailed description thereof is omitted.

<Example of Function Deployment in IP Network 3: Example of Special Number Node Centralized Function Deployment>
FIG. 4 shows an example of function deployment and operation in which functions are concentrated on the special number node 55 by deploying a part of the AS40 and MGC30 functional elements shown in FIG. In the IP network / special number node centralized function deployment example 203 in FIG. 4, a dial signal from the user terminal 11 </ b> B is transmitted to the special number node 55 via the MGC 30 and the AS 40, and service determination is performed at the special number node 55. Therefore, the MGC 30 and the AS 40 need not be provided with functional elements such as service determination, dial number setting, and charging / non-charging connection, which are functional elements depending on the special service, and economical services can be provided. Further, the operation in this embodiment is the same as that in FIG. 2 except for the transmission route of the dial signal and the billing signal, and thus detailed description thereof is omitted.

<Detailed operation sequence>
Hereinafter, the details of the operation sequence in the above-described three function deployment examples will be described with respect to three services, which are typical examples of the special number service, such as number guidance, call information provision, and temporary reception, in comparison with the operation sequence in the existing network.

  FIG. 5 to FIG. 9 are connection sequence examples common to the special number service when the connection from the user to the communicator is performed. 5 shows an existing PSTN (FIG. 1), FIG. 6 shows an AS deployment example (FIG. 2), FIG. 7 shows an AS-MGC aggregation deployment example (FIG. 3), and FIG. 8 shows a special node centralized function deployment example (FIG. 4). FIG. 9 is an example of a connection sequence, and FIG. 9 is an example of a connection sequence when a user of another provider network uses an IP network special service.

  FIG. 5 is a connection sequence example (PSTN) 300 to the communicator in the existing PSTN (FIG. 1). Details of the operation will be described below with reference to the sequence chart of FIG.

(1) When the handset is off-hooked by the user of the special number service, an off-hook signal (311A) is transmitted from the user terminal 11A to the originating exchange 20.
(2) The originating exchange 20 sends a dial tone (312A) to the user terminal 11A.
(3) When a three-digit special number (10X) corresponding to the service desired by the user is dialed, a special number (10X) dial signal (313A) is transmitted from the user terminal 11A to the originating exchange 20.
(4) The originating switch 20 determines the type of service corresponding to the dialed special number (10X) by using the service determination function and whether or not the service can be provided. The incoming number of the previous special number exchange 50 is acquired, the special number (10X) is set as a dial control number as a dial number by the dial number setting function, and a call signal (314A) to the special number exchange 50 is transmitted. As a result, the call signal (314A) is transmitted to the special number switch 50 by the relay switch group (not shown), and the call is received.
(5) The special number exchange 50 transmits a call signal (315A) to the communicator terminal 70 in an empty state, and the communicator is notified of the incoming call by a ringing tone or the like.
(6) When the handset is off-hooked by the communicator in response to the incoming call, an off-hook signal (316A) is transmitted from the communicator terminal 70 to the special number exchange 50.
(7) The special number exchange 50 returns a non-billing response signal (317A) to the originating exchange 20 via a relay exchange group (not shown). Thereby, the non-billing first call communication path between the user terminal 11A and the communicator terminal 70 is generated by the originating exchange 20 and the special number exchange 50 (P1). Instead of returning a non-billing response signal (317A) from the special number exchange 50, a reply notification signal having no billing / non-billing information is returned, and the calling switch 20 sets a non-billing call path. It may be set.
(8) The user makes a call with the communicator free of charge and makes a specific request according to the type of service (P1).

  FIG. 6 is a connection sequence example (IP network / AS deployment example) 301 to the communicator in the AS deployment example (FIG. 2). Details of the operation will be described below along the sequence chart of FIG.

(1) When the handset is off-hooked by the user of the special number service, an off-hook signal (311B) is transmitted from the user terminal 11B to the calling MG 25.
(2) The originating MG 25 sends a dial tone (312B) to the user terminal 11B.
(3) When a 3-digit special number (10X) corresponding to the service desired by the user is dialed, a dial signal (313B) is transmitted from the user terminal 11B to the calling MG 25.
(4) The calling MG 25 transmits the calling signal (314B) to the special number (10X) to the MGC 30 by the IP network call control signal system.
(5) The MGC 30 acquires the incoming call number of the connection destination special number node 55 by the number translation function, sets the special number (10X) as a dial number by the dial number setting function, and sets the special number node by the AS routing function. A call signal (315B) to 55 is transmitted to the AS 40.
(6) The AS 40 uses the service determination function to determine the type of service corresponding to the dialed special number and whether or not the service can be provided. If it is determined that the service can be provided, the AS 40 issues a call signal (316B) to the special number node 55. ) To the special number node 55, and the call arrives at the special number node 55.
(7) The special number node 55 transmits a call signal (317B) to the communicator terminal 70 in an empty state, and the communicator is notified of the incoming call by a ringing tone or the like.
(8) When the handset is off-hooked by the communicator in response to the incoming call, an off-hook signal (318B) is transmitted from the communicator terminal 70 to the special number node 55.
(9) When the special node 55 returns a response notification signal (319B) to the AS 40, the AS 40 returns a non-billing response signal (320B) to the MGC 30, and the MGC 30 transmits a non-billing response signal (321B) to the originating MG 25. As a result, a non-billing first call communication path between the user terminal 11B and the communicator terminal 70 is generated (P1). Instead of returning the response notification signal (319B) from the special number node 55 to the AS 40, a response signal including charging / non-charging information is returned, and the special number node 55 controls charging / non-charging. It is good.
(10) The user makes a call with the communicator for free of charge and makes a specific request according to the type of service (P1).

  FIG. 7 is a connection sequence example (IP network / AS-MGC deployment example) 302 to the communicator in the AS-MGC aggregation deployment example (FIG. 3). Details of the operation will be described below along the sequence chart of FIG.

The operations from (1) to (4) are the same as in the AS deployment example (FIG. 6).
(5) The MGC 30 determines the type of service corresponding to the special number dialed by the service determination function and whether or not the service can be provided. If the MGC 30 determines that the service can be provided, the MGC 30 After obtaining the incoming call number and setting the call control signal with the special number (10X) as the dial number by the dial number setting function, the call signal (322B) to the special number node 55 is transmitted to the special number node 55, and the special number node A call arrives at 55.
(6) The special number node 55 transmits a call signal (317B) to the communicator terminal 70 in an empty state, and the communicator is notified of the incoming call by a ringing tone or the like.
(7) When the handset is off-hooked by the communicator in response to the incoming call, an off-hook signal (318B) is transmitted from the communicator terminal 70 to the special number node 55.
(8) When the special number node 55 returns a response notification signal (323B) to the MGC 30, the MGC 30 returns a non-billing response signal (321B) to the originating MG 25, and thereby between the user terminal 11B and the communicator terminal 70. The first non-billing first call call path is generated (P1). Instead of returning the response notification signal (323B) from the special number node 55 to the MGC 30, a response signal including charging / non-billing information is returned, and the special number node 55 controls charging / non-billing. It is good.
(9) The user makes a call with the communicator for free of charge and makes a specific request according to the type of service (P1).

  FIG. 8 is a connection sequence example (IP network / special number node centralized function deployment example) 303 to the communicator in the special number node centralized function deployment example (FIG. 4). Details of the operation will be described below along the sequence chart of FIG.

The operations from (1) to (4) are the same as in the AS deployment example (FIG. 6).
(5) The MGC 30 transmits the call signal (324B) to the special number (10X) to the AS 40 by the AS routing function, and the AS 40 transmits the call signal (325B) to the special number (10X) to the special number node 55. A call arrives at the special number node 55.
(6) The special number node 55 determines the type of service corresponding to the special number dialed by the service determination function and whether or not the service can be provided. If it is determined that the service can be provided, the special number node 55 Then, a call signal (317B) is transmitted, and the communicator is notified of the incoming call by a ringing tone or the like.
(7) When the handset is off-hooked by the communicator in response to the incoming call, an off-hook signal (318B) is transmitted from the communicator terminal 70 to the special number node 55.
(8) When the special number node 55 returns a non-billing response signal (326B) to the AS 40, the non-billing response signals (320B, 321B) are relayed to the originating MG 25 by the AS 40 and MGC 30, thereby communicating with the user terminal 11B. A non-billing first call communication path with the data terminal 70 is generated (P1).
(9) The user makes a call with the communicator for free of charge and makes a specific request according to the type of service (P1).

  FIG. 9 is a connection sequence example (IP network / other carrier connection example) 304 to a communicator when a user of another carrier network uses a special number service of the IP network. Details of the operation will be described below along the sequence chart of FIG.

(1) When a three-digit special number (10X) corresponding to a service desired by a user of another operator network is dialed, a calling signal (10X) is sent from the user terminal 11C to the other operator GW 66 ( 311C) is transmitted.
(2) The other provider GW 66 transmits a call signal (312C) to the special number (10X) to the PSTN-GW 65.
(3) The PSTN-GW 65 determines the service type corresponding to the special number dialed by the service determination function and whether or not the service can be provided. If the PSTN-GW 65 determines that the service can be provided, the special number node of the connection destination is determined by the number translation function. 55, and after setting the special number (10X) as a dial number in the call control signal by the dial number setting function, a call signal (313C) to the special number node 55 is transmitted to the special number node 55, A call arrives at the special number node 55.
(4) The special number node 55 transmits a call signal (317B) to the communicator terminal 70 in an empty state, and the communicator is notified of the incoming call by a ringing tone or the like.
(5) When the handset is off-hooked by the communicator in response to the incoming call, an off-hook signal (318B) is transmitted from the communicator terminal 70 to the special number node 55.
(6) The special number node 55 returns a response notification signal (314C) to the PSTN-GW 65, and the PSTN-GW 65 returns a non-billing response signal (315C) to the other operator GW 66, thereby communicating with the user terminal 11C. A non-billing first call communication path with the data terminal 70 is generated (P1). Instead of returning a response notification signal (314C) from the special number node 55 to the PSTN-GW 65, a special response signal 55 including a charge / non-charge information is returned, and the special number node 55 performs charge / non-charge control. It is good also as what to do.
(7) The user makes a call with the communicator for free of charge and makes a specific request according to the type of service (P1).

  Next, a service sequence in the number guidance service will be described with reference to FIGS. FIG. 10 shows an existing PSTN (FIG. 1), and FIG. 11 shows an example of a service sequence in the IP network, both of which are after the first call communication path between the user terminal 11A or 11B and the communicator terminal 70 is generated. The sequence is shown.

  FIG. 10 is a service sequence example (PSTN) 400 at the time of telephone number guidance in the existing PSTN (FIG. 1). Details of the operation will be described below with reference to the sequence chart of FIG.

(1) The communicator accepts a request to search for a subscriber's telephone number from an address or a telephone directory registered name (P11).
(2) The communicator accesses the electronic number guidance system (angel center) 80, searches for a telephone number corresponding to the request, and performs a search completion operation when the telephone number is found. (3) The communicator terminal 70 transmits a search completion signal (411A) to the special exchange 50.
(4) The special number exchange 50 transmits an accounting signal (412A) instructing the originating exchange 20 to charge for a predetermined service fee.
(5) The originating switch 20 generates billing information for the subscriber if it is used from a general subscriber terminal. If the terminal is used from a terminal that requires immediate billing, such as a public telephone, a storage instruction signal (413A) is transmitted to the user terminal 11A by the storage processing function, and the necessary amount or card call frequency is transmitted from the user terminal 11A. When the storage completion signal (414A) is not returned within a predetermined time, the service is canceled and the call is disconnected.
(6) When the generation or storage process of the billing information is completed, the originating exchange 20 returns a response signal (415A) indicating the completion of storage to the special number exchange 50.
(7) The special number exchange 50 transmits a storage completion notification (416A) to the communicator terminal 70, and the communicator is informed that the storage of the charge has been completed by means of a display lamp or a special sound.
(8) The communicator notifies the user of the searched telephone number (P12).
Then, repeat (1) to (8) as many times as necessary.

  FIG. 11 is a service sequence example (IP network / AS deployment example) 401 at the time of telephone number guidance in the AS deployment example (FIG. 2). Details of the operation will be described below with reference to the sequence chart of FIG.

The operations (1) and (2) are the same as in the case of the PSTN (FIG. 10).
(3) The communicator terminal 70 transmits a search completion signal (411B) to the special number node 55.
(4) When the special number node 55 transmits a search completion signal (412B) to the AS 40, the AS 40 determines a required charge amount and transmits a charge signal (413B) to the MGC 30.
(5) If the MGC 30 is used from a general subscriber terminal, it generates billing information for the subscriber. If the terminal is used from a terminal that requires immediate billing, such as a public telephone, a storage instruction signal (414B) is transmitted to the calling MG 25 by the storage processing function.
(6) The originating MG 25 transmits a storage signal (415B) to the user terminal 11B, and the user terminal 11B stores the necessary amount or card call frequency and returns a storage completion signal (416B). Wait for
(7) When the storage completion signal (416B) is returned, the originating MG 25 returns the storage completion signal (417B) to the MGC 30.
(8) When the generation or storage processing of the billing information is completed, the MGC 30 returns a response signal (418B) indicating the storage completion to the AS 40. Further, the MGC 30 disconnects the call if the storage completion signal (417B) is not returned within a predetermined time.
(9) The AS 40 transmits a storage completion notification (419B) to the special number node 55, the special number node 55 transmits a storage completion notification (420B) to the communicator terminal 70, and notifies the communicator by a display lamp or a special sound. You are informed that the charges have been stored.
(10) The communicator notifies the user of the searched telephone number (P12).
Then, repeat (1) to (10) as many times as necessary.

  In addition, when providing the number guidance service to the user of the other operator network, the PSTN-GW 65 relays the billing signal (413B) to the other operator GW 66 on behalf of the MGC 30, and the storage is completed from the other operator GW 66. The PSTN-GW 65 that has received the notification may return a storage completion response signal (418B) to the AS 40.

  Next, a connection sequence when the communicator calls the request destination and connects to the user will be described with reference to FIGS. FIG. 12 is a connection sequence example corresponding to the number guidance and the 100th call (call information provision) service in the existing PSTN (FIG. 1), and FIG. 13 is a connection sequence example corresponding to the temporary reception service. FIG. 14 is an example of a connection sequence corresponding to the number guidance and the 100th call (call information provision) service in the IP network (FIGS. 2 to 4), and FIGS. 15 and 16 are also 2 corresponding to the temporary reception service. It is an example of a kind of connection sequence. FIG. 17 shows a connection sequence example when the request destination is an existing PSTN subscriber terminal. Both show the sequence after the first call communication path between the user terminal 11A or 11B and the communicator terminal 70 is generated.

  FIG. 12 is a connection sequence example A (PSTN) 500A to a request destination corresponding to the number guidance and the 100th call (call information provision) service in the existing PSTN (FIG. 1). Details of the operation will be described below with reference to the sequence chart of FIG.

(1) The communicator receives a connection request from the user (P13).
(2) The communicator performs a call connection operation from the communicator terminal 70 to the requested terminal 12A while continuing the first call communication path with the user (P14).
(3) The special number exchange 50 sets the call control signal to indicate that the call is a transfer call so that the destination exchange 21 can determine the service contention of the incoming call, and the outgoing call signal (511A) to the requested terminal 12A Send. As a result, a call signal (511A) is transmitted to the destination exchange 21 by a relay exchange group (not shown), and the destination exchange 21 transmits a call signal (512A) to the requested terminal 12A.
(4) When an off-hook operation is performed at the request destination terminal 12A, an off-hook signal (513A) is returned to the destination exchange 21, and the destination exchange 21 returns a response notification signal (514A) to the special number exchange 50 to request the destination. A second call communication path with the terminal 12A is generated.
(5) A connection guidance message is notified from the communicator terminal 70 or the special number exchange 50 to the request destination terminal 12A (P15).
(6) After the notification of the connection guidance message, the special number exchange 50 establishes the first call call path (P14) between the user terminal 11A and the second call call path (P15) between the requested terminal 12A. Then, by connecting each other internally, a linked call path between the user terminal 11A and the requested terminal 12A is generated (P2). At the same time, the special number exchange 50 transmits a billing start instruction (515A) including the unit price of the call charge to the calling exchange 20, so that the calling switch 20 starts billing for the call time.
(7) When the call is finished and an on-hook operation is performed at the requested terminal 12A, an on-hook signal (516A) is transmitted to the destination exchange 21, and the destination exchange 21 transmits a disconnection signal (517A) to the special number exchange 50. .
(8) The special number exchange 50 transmits a disconnection signal (518A) instructing the calling switch 20 to end charging, and the calling exchange 20 generates a billing information after sending a busy tone (519A) to the user terminal 11A. To do.

  FIG. 13 is a connection sequence example B (PSTN) 500B to the request destination corresponding to the temporary reception service in the existing PSTN (FIG. 1). Details of the operation will be described below with reference to the sequence chart of FIG.

(1) After receiving the connection request from the user, the communicator prompts the user to end the call once (P13).
(2) When an on-hook operation is performed at the user terminal 11A, an on-hook signal (531A) is transmitted to the originating exchange 20, and the first call communication path (P13) is disconnected.
(3) The communicator performs a call connection operation from the communicator terminal 70 to the requested terminal 12A.
(4) The special number exchange 50 sets the call control signal to indicate that the call is an interrupt call so that the destination exchange 21 can determine the service contention of the incoming call, and the call signal (533A) to the requested terminal 12A Send. As a result, the call signal (533A) is transmitted to the destination exchange 21 by a relay exchange group (not shown).
(5) At this time, if the request destination terminal 12A is in a call with another call destination terminal 13A (P31), the destination exchange 21 determines a service conflict as an interrupted call and captures the three-party call trunk. After that, a ringing tone (534A) for notifying the request destination terminal 12A of an incoming interrupt is sent.
(6) When a response operation to an interrupt incoming call is performed at the request destination terminal 12A, a response operation signal (535A) is returned to the destination exchange 21, and the destination exchange 21 communicates with the communicator terminal 70, the request destination terminal 12A, and the destination. By connecting the three parties with the terminal 13A to the three-party call trunk, the three-party call becomes possible (P16).
(7) After sending an emergency call connection guidance message from the communicator terminal 70 or the special number exchange 50 to the request destination terminal 12A and the call destination terminal 13A to prompt the end of the call with the call destination terminal 13A (P16), the special number When the disconnection signal (537A) is transmitted from the exchange 50, the destination exchange 21 releases the three-party call trunk and returns to the two-party call state of the request destination terminal 12A and the call destination terminal 13A (P32).
(8) When the on-hook operation is performed at the request destination terminal 12A after the call with the call destination terminal 13A is terminated, an on-hook signal (538A) is transmitted to the destination exchange 21, and the destination exchange 21 is disconnected by the special number exchange 50. A notification signal (539A) is transmitted, and a busy tone (540A) is transmitted to the destination terminal 13A.
(9) The special number exchange 50 makes a call back connection to both the user terminal 11A and the request destination terminal 12A (541A to 544A and 545A to 548A).
(10) When both the user terminal 11A and the requested terminal 12A respond to the incoming call, the special number exchange 50 notifies the requested terminal 12A of a connection guidance message (P15), and then communicates with the user terminal 11A. The second call call path (P15) between the first call call path (P14) and the request destination terminal 12A is internally coupled to each other, thereby connecting the user terminal 11A and the request destination terminal 12A. A connected call path is generated (P2).

  The subsequent operation after the start of a call between the user terminal 11A and the request destination terminal 12A is the same as that in FIG. Further, when a call is not in progress at the time of call connection operation to the request destination terminal 12A in (3), the same operation sequence is performed except that it is not necessary to capture and release the three-party call trunk.

  FIG. 14 is a connection sequence example A (IP network) 501A to the request destination corresponding to the number guidance and the 100th call (call information provision) service in the IP network (FIGS. 2 to 4). Details of the operation will be described below with reference to the sequence chart of FIG.

(1) The communicator receives a connection request from the user (P13).
(2) The communicator performs a call connection operation from the communicator terminal 70 to the requested terminal 12B while continuing the first call call path with the user terminal 11B (P14).
(3) The special number node 55 sets the call control signal to indicate that the call is a transfer call so that the destination MG 26 can determine the service conflict of the incoming call, and sends a call signal (511B) to the requested terminal 12B. Send to MGC30. Thereby, the call signal (511B) is transmitted from the MGC 30 to the destination MG 26, and the destination MG 26 transmits a call signal (512B) to the request destination terminal 12B.
(4) When an off-hook operation is performed at the requested terminal 12B, an off-hook signal (513B) is returned to the destination MG 26, and a response notification signal (514B) is returned from the destination MG 26 to the special number node 55 via the MGC 30. Then, a second call communication path with the request destination terminal 12B is generated (P15).
(5) A connection guidance message is notified from the communicator terminal 70 or the special number node 55 to the request destination terminal 12B (P15).
(6) After the notification of the connection guidance message, the special number node 55 sets the first call call path (P14) between the user terminal 11B and the second call call path (P15) between the requested terminal 12B. Then, both the originating MG 25 and the terminating MG 26 are instructed to be coupled to each other (515B, 516B), and a linked call path between the user terminal 11B and the requested terminal 12B is generated by cooperation between the originating MG 25 and the terminating MG 26. (P2). At this time, the special number node 55 transmits a path combination instruction (515B) including an instruction to start charging to the calling MG 25, so that the calling MG 25 starts charging for the call time.
(7) When the call is finished and an on-hook operation is performed at the requested terminal 12B, an on-hook signal (517B) is transmitted to the destination MG 26, and the destination MG 26 transmits a disconnection signal (518B) to the MGC 30.
(8) The MGC 30 disconnects the call by transmitting a disconnection signal (519B) instructing the calling MG25 to end charging, and the calling MG25 transmits a busy tone (520B) to the user terminal 11B. In addition, the MGC 30 transmits a disconnection notification signal (521B) to the special number node 55, so that the special number node 55 recognizes that the call on the connected call path has ended.

  FIG. 15 is a connection sequence example B (IP network) 501B to the request destination corresponding to the temporary reception service in the IP network (FIGS. 2 to 4), and provides the same service as FIG. Details of the operation will be described below with reference to the sequence chart of FIG.

(1) After receiving the connection request from the user, the communicator prompts the user to end the call once (P13).
(2) When an on-hook operation is performed at the user terminal 11B, an on-hook signal (531B) is transmitted to the originating MG 25, and the first call communication path (P13) is disconnected (532B, 533B).
(3) The communicator performs a call connection operation from the communicator terminal 70 to the requested terminal 12B.
(4) The special number node 55 sets the call control signal as an interrupt call so that the incoming MG 26 can determine the service conflict of the incoming call, and sends a call signal (534B) to the requested terminal 12B. Send to MGC30. Thereby, the calling signal (534B) is transmitted from the MGC 30 to the incoming MG 26.
(5) At this time, if the request destination terminal 12B is in a call with another call destination terminal 13B (P31), the destination MG 26 determines a service conflict as an interrupted call and captures the three-party call trunk. After that, a ringing tone (535B) for notifying the request destination terminal 12B of an incoming interrupt is sent.
(6) When a response operation to an interrupt incoming call is performed at the request destination terminal 12B, a response operation signal (536B) is sent back to the destination MG 26, and the destination MG 26 receives the communicator terminal 70, the destination terminal 12B, and the destination terminal 13B. By connecting the three parties to the three-party call trunk, a three-party call becomes possible (P16).
(7) After sending an emergency call connection guidance message from the communicator terminal 70 or the special number node 55 to the request destination terminal 12B and the call destination terminal 13B to prompt the end of the call with the call destination terminal 13B (P16), the special number When the disconnection signal (538B) is transmitted from the node 55, the destination MG 26 releases the three-party call trunk and returns to the two-party call state between the request destination terminal 12B and the call destination terminal 13B (P32).
(8) When the on-hook operation is performed at the request destination terminal 12B after the call with the destination terminal 13B is completed, an on-hook signal (539B) is transmitted to the destination MG 26, and the destination MG 26 is sent to the special number node 55 via the MGC 30. A disconnection notification signal (540B) is transmitted, and a busy tone (541B) is transmitted to the called terminal 13B.
(9) The special number node 55 performs call back connection to both the user terminal 11B and the request destination terminal 12B (542B to 545B and 546B to 549B).
(10) When both the user terminal 11B and the request destination terminal 12B respond to the incoming call, the special number node 55 notifies the request destination terminal 12B of the connection guidance message (P15), and then between the user terminal 11B and the user terminal 11B. Both the originating MG 25 and the terminating MG 26 are instructed to mutually couple the second call conversation path (P15) between the first call conversation path (P14) and the requested terminal 12B (550B, 551B), A linked call path between the user terminal 11B and the requested terminal 12B is generated by cooperation between the originating MG25 and the terminating MG26 (P2).

  FIG. 16 is a connection sequence example C (IP network) 501C to the request destination corresponding to the temporary reception service in the IP network (FIGS. 2 to 4), and provides the service in a partially different sequence from FIG. Is. Details of the operation will be described below with reference to the sequence chart of FIG.

(1) The communicator receives a connection request from the user (P13).
(2) The communicator performs a call connection operation from the communicator terminal 70 to the requested terminal 12B while continuing the first call call path with the user terminal 11B (P14).
(3) The special number node 55 sets the call control signal to indicate that the call is an interrupt call so that the incoming MG 26 can determine the service conflict of the incoming call, and sends a call signal (561B) to the requested terminal 12B. Send to MGC30. As a result, the call signal (561B) is transmitted from the MGC 30 to the destination MG 26.
(4) At this time, if the request destination terminal 12B is in a call with another call destination terminal 13B (P31), the destination MG 26 determines the service conflict as an interrupted call and captures the three-party call trunk. After that, a ringing tone (562B) for notifying the request destination terminal 12B of an incoming interrupt is sent.
(5) When a response operation to an interrupt incoming call is performed at the request destination terminal 12B, a response operation signal (563B) is returned to the destination MG 26, and the destination MG 26 transmits a response notification signal (564B) to the special number node 55. At the same time, by connecting the three parties of the communicator terminal 70, the request destination terminal 12B, and the call destination terminal 13B to the three-party call trunk, a three-party call becomes possible (P16).
(6) After sending the emergency call connection guidance message from the communicator terminal 70 or the special number node 55 to the request destination terminal 12B and the call destination terminal 13B (P16), the special number node 55 communicates with the user terminal 11B. Both the outgoing MG 25 and the incoming MG 26 are instructed to mutually connect the first call call path (P14) and the second call call path (P15) between the requested terminal 12B (565B, 566B). A linked call path between the user terminal 11B and the request destination terminal 12B is generated by cooperation between the MG 25 and the destination MG 26, and a three-party call including the call destination terminal 13B becomes possible (P17).
(7) When the on-hook operation is performed at the requested terminal 12B after the three-party call is completed, an on-hook signal (567B) is transmitted to the destination MG 26, and the destination MG 26 transmits a disconnection signal (568B) to the MGC 30. The three-party call trunk is opened and a busy tone (572B) is sent to the called terminal 13B.
(8) The MGC 30 transmits a disconnect signal (569B) to the originating MG 25 to disconnect the call, and the originating MG 25 transmits a busy tone (570B) to the user terminal 11B. In addition, the MGC 30 transmits a disconnection notification signal (571B) to the special number node 55, so that the special number node 55 recognizes that the call on the connected call path (P17) has ended.

  FIG. 17 shows a connection sequence example (interconnection) 502 to a request destination when the request destination is an existing PSTN subscriber terminal in the IP network (FIGS. 2 to 4). Details of the operation will be described below with reference to the sequence chart of FIG.

(1) The communicator receives a connection request from the user (P13).
(2) The communicator performs a call connection operation from the communicator terminal 70 to the requested terminal 12A while continuing the first call communication path with the user (P14).
(3) The special number node 55 sets the call control signal to indicate that the call is a transfer call so that the destination exchange 21 can determine the service contention of the incoming call, and sends the call signal (581B) to the requested terminal 12A. Is transmitted to MGC30. As a result, the call signal (581B) is transmitted from the MGC 30 to the PSTN-GW 65, and the call signal (582C) is transmitted from the PSTN-GW 65 to the destination exchange 21 via the relay exchange group (not shown). A call signal (583C) is transmitted to the request destination terminal 12A.
(4) When an off-hook operation is performed at the requested terminal 12A, an off-hook signal (584C) is returned to the destination exchange 21, and the PSTN-GW 65 receives a response notification signal (585C) returned from the destination exchange 21, By returning a response notification signal (586B) to the special number node 55 via the MGC 30, a second call communication path with the requested terminal 12A is generated (P15).
(5) After notifying the requesting terminal 12A of the connection guidance message from the communicator terminal 70 or the special number node 55 (P15), the special number node 55 and the first call communication path (P14) with the user terminal 11B Both the originating MG 25 and the PSTN-GW 65 are instructed to mutually connect the second call communication path (P15) with the requested terminal 12A (587B, 588B), and the originating MG 25 and the PSTN-GW 65 A linked call path between the user terminal 11B and the requested terminal 12A is generated by cooperation (P2). At this time, the special number node 55 transmits a path combination instruction (587B) including an instruction to start charging to the calling MG 25, so that the calling MG 25 starts charging for the call time.
(6) When the call is finished and an on-hook operation is performed at the requested terminal 12A, an on-hook signal (589C) is transmitted to the destination exchange 21, and the PSTN-GW 65 is a disconnect signal (590C) transmitted from the destination exchange 21. And a disconnection signal (591C) is transmitted to the MGC 30.
(7) The MGC 30 transmits a disconnection signal (592B) to the originating MG25 to disconnect the call, and the originating MG25 transmits a busy tone (593B) to the user terminal 11B. In addition, the MGC 30 transmits a disconnection notification signal (594B) to the special number node 55, so that the special number node 55 recognizes that the call on the connected call path (P2) has ended.

  Next, with reference to FIG. 18 and FIG. 19, a service sequence in the 100th call (call information provision) service will be described. 18 shows an existing PSTN (FIG. 1), and FIG. 19 shows an example of a service sequence in the IP network. In both cases, a connected call path between the user terminal 11A or 11B and the requested terminal 12A or 12B is generated. The sequence is shown.

  FIG. 18 is a service sequence example (PSTN) 600 at the time of call information guidance in the existing PSTN (FIG. 1). Details of the operation will be described below with reference to the sequence chart of FIG.

(1) When the call with the requested user is completed through the connected call path (P2) between the user terminal 11A and the requested terminal 12A and an on-hook operation is performed at the requested terminal 12A, an on-hook signal (611A ) Is transmitted to the destination exchange 21, and the destination exchange 21 transmits a disconnection signal (612A) to the special number exchange 50, whereby the special number exchange 50 grasps that the call with the requested user has been terminated.
(2) The special number exchange 50 transmits a disconnection signal (613A) instructing the calling exchange 20 to end charging, and the calling exchange 20 sends a busy tone (614A) to the user terminal 11A. On-hook the terminal 11A.
(3) The special number exchange 50 calculates the call time and call charge on the connected call path (P2) by the call information providing function, and then transmits a call signal (615A) to the user terminal 11A. As a result, the calling signal (615A) is transmitted to the calling switch 20 by the relay switch group (not shown), and the calling switch 20 transmits the calling signal (616A) to the user terminal 11A.
(4) When an off-hook operation is performed at the user terminal 11A, an off-hook signal (617A) is returned to the originating exchange 20, and the originating exchange 20 returns a response notification signal (618A) to the special number exchange 50. A call path between the exchange 50 and the user terminal 11A is generated (P4).
(5) The communicator terminal 70 or the special number exchange 50 provides call information guidance for notifying the user terminal 11A of the call time and call charge with the requested user (P4).
(6) When the call information guidance is completed, the special exchange 50 transmits a disconnection signal (619A) to the originating switch 20, and the originating switch 20 sends a busy tone (620A) to the user terminal 11A.

  FIG. 19 shows a service sequence example (IP network) 601 at the time of call information guidance in the IP network (FIGS. 2 to 4). Details of the operation will be described below with reference to the sequence chart of FIG.

(1) When the on-hook operation is performed at the request destination terminal 12B when the call with the request destination user is completed through the connected call path (P2) between the user terminal 11B and the request destination terminal 12B, an on-hook signal (611B ) Is transmitted to the destination MG 26, and the destination MG 26 transmits a disconnection signal (612B) to the MGC 30.
(2) The MGC 30 transmits a disconnection signal (613B) instructing the calling MG25 to end charging, and disconnects the call. The calling MG25 transmits a busy tone (614B) to the user terminal 11B, and the user uses it. The user terminal 11B. In addition, the MGC 30 transmits a disconnection notification signal (615B) to the special number node 55, so that the special number node 55 recognizes that the call with the requested user has ended.
(3) The special number node 55 calculates the call time and call charge on the connected call path (P2) by the call information providing function, and then transmits a call signal (616B) to the user terminal 11B to the MGC 30. Thereby, the calling signal (616B) is transmitted from the MGC 30 to the calling MG 25, and the calling MG 25 transmits the calling signal (617B) to the user terminal 11B.
(4) When an off-hook operation is performed at the user terminal 11B, an off-hook signal (618B) is returned to the originating MG 25, and a response notification signal (619B) is returned from the originating MG 25 to the special number node 55 via the MGC 30. A call path between the special number node 55 and the user terminal 11B is generated (P4).
(5) The communicator terminal 70 or the special number node 55 performs call information guidance for notifying the user terminal 11B of the call time and call charge with the requested user (P4).
(6) When the call information guidance is completed, the special number node 55 transmits a disconnection signal (620B) to the MGC 30, and the originating MG 25, to which the disconnection signal (620B) is transmitted from the MGC 30, is a busy tone (621B) to the user terminal 11B. Is sent out.

  Although the description of the mode for carrying out the present invention is finished as above, the embodiment of the present invention is not limited to the above-described example, and can be appropriately changed without departing from the gist of the present invention. is there.

11A, 11B, 11C User terminal 12A, 12B Request destination terminal 13A, 13B Call destination terminal 20 Originating switch 21 Called exchange 25 Originating MG
26 MG
30 Media Gateway Controller (MGC)
40 Application Server (AS)
50 Special number exchange 55 Special number node 65 PSTN-GW
66 Other company GW
70 Communicator terminal 80 Electronic number guidance system (Angel Center)
100 Subscriber telephone network (PSTN)

Claims (7)

A provision method in an IP network of a special service for performing a call connection to a requested terminal through a communicator,
The media gateway accommodating the user terminal of the special number service user transmits the dial number of the predetermined special number service dialed at the user terminal to the media gateway controller,
The application server to which the dial number of the special number service is transmitted from the media gateway controller or the media gateway controller is a special number node in which a communicator terminal that provides the special number service corresponding to the transmitted dial number is accommodated. An incoming call number is determined by a number translation function, and when a call is made to the special number node by the determined incoming call number, the dial number of the special number service is transmitted, and the user terminal and the communicator terminal After generating the first call path between
Information indicating that the call is a transfer call or an interrupt call from the communicator terminal to the request destination terminal while maintaining the first call path for accepting a service request from a user of the special number service Then call
The media gateway that accommodates the request destination terminal has a second call path established between the request destination terminal and the communicator terminal established by the request destination terminal responding to the call to the special node. By combining with the first call path in cooperation with the media gateway accommodating the user terminal according to the call path combining instruction signal issued from the user terminal, between the user terminal and the requested terminal A method for providing a special service characterized by generating a linked call path . A provision method in an IP network of a special service for performing a call connection to a requested terminal through a communicator,
The media gateway accommodating the user terminal of the special number service user transmits the dial number of the predetermined special number service dialed at the user terminal to the media gateway controller,
The application server to which the dial number of the special service is transmitted from the media gateway controller or the media gateway controller is set in advance to accommodate the transmitted dial number in a communicator terminal that provides the special service. After transmitting to a specific special number node and generating a first call path between the user terminal and the communicator terminal ,
Information indicating that the call is a transfer call or an interrupt call from the communicator terminal to the request destination terminal while maintaining the first call path for accepting a service request from a user of the special number service Then call
The media gateway that accommodates the request destination terminal has a second call path established between the request destination terminal and the communicator terminal established by the request destination terminal responding to the call to the special node. By combining with the first call path in cooperation with the media gateway accommodating the user terminal according to the call path combining instruction signal issued from the user terminal, between the user terminal and the requested terminal A method for providing a special service characterized by generating a linked call path . In the provision method of the special number service of Claim 1 or Claim 2,
A gateway device that interconnects with an existing subscriber telephone network or another carrier network receives a special calling signal from the existing subscriber telephone network or other carrier network, and previously receives the received special number dial number. and transmitting the set specific access code node, after generating a first speech path between the user terminal of the subscriber telephone network or other carrier network and said communicator terminal,
Information indicating that the call is a transfer call or an interrupt call from the communicator terminal to the request destination terminal while maintaining the first call path for accepting a service request from a user of the special number service Then call
The media gateway that accommodates the request destination terminal has a second call path established between the request destination terminal and the communicator terminal established by the request destination terminal responding to the call to the special node. In accordance with a call path connection instruction signal issued from the terminal device, a connection call path between the user terminal and the requested terminal is generated by combining with the first call path in cooperation with the gateway device < A special number service providing method characterized by the above. In the provision method of the special number service as described in any one of Claims 1-3 ,
When the callee terminal is in a call with another terminal when making a call by adding information indicating that it is an interrupted call from the communicator terminal to the requestee terminal,
The media gateways to accommodate the request destination terminal is to capture the 3-way call trunk sends a ringing tone to the request destination terminal, the request destination and the communicator terminal in accordance with the responding operation of the request destination terminal A method for providing a special service, which enables a three-party call between a terminal and the other terminal. In the provision method of the special number service as described in any one of Claims 1-4 ,
When a call using the connected call path is terminated, a media gateway controller that relays the call path connection instruction signal issued from the special number node sends a disconnection notification signal indicating that the call is terminated to the special number node. A special number service providing method characterized by transmitting to A communicator is interposed in an IP network including a media gateway that accommodates a plurality of subscriber terminals and manages bearer transfer between the subscriber terminals, and a media gateway controller that controls call connection between the subscriber terminals. A special number service providing system for providing a special number service for performing a call connection to a requested terminal,
It has a special number node that houses the communicator terminal,
By dialing a predetermined dial number predetermined for each type of special number service from the user terminal of the special number service user, the predetermined number node is received, and the communicator terminal responds to the incoming call, A first call path is generated between the user terminal and the communicator terminal ;
While maintaining the first call path from the communicator terminal, a call is made with information indicating that the call is a transfer call or an interrupt call to the request destination terminal, and the request destination terminal makes the call To generate a second call path between the requested terminal and the communicator terminal ,
The special number node is
After sending a connection guidance voice message to the second call path, the user terminal is accommodated with a call path combination instruction signal for instructing the combination of the first call path and the second call path. To both the media gateway and the media gateway accommodating the requested terminal,
The both media gateways that have received the call path connection instruction signal are:
A special service providing system for generating a concatenated call path that combines the first call path and the second call path in cooperation with each other. A media gateway that accommodates a plurality of subscriber terminals and manages bearer transfer between the subscriber terminals, and a media gateway controller that controls call connection control between the subscriber terminals;
Accommodates a communicator terminal that provides a special number service that performs call connection to the requested terminal.
When the communicator terminal responds to an incoming special number dial from the user terminal of the special number service user, generates a first call path between the user terminal and the communicator terminal ;
The request generated when the communicator terminal calls the request destination terminal as a transfer call or an interrupt call while maintaining the first call path, and the request destination terminal responds to the call. secondly After sending the voice message announce the call path, the call path coupled to direct binding of the second call path between said first speech path between the former terminal and the communicator terminal The instruction number node transmits the instruction signal to both the media gateway accommodating the user terminal and the media gateway accommodating the requested terminal.

Images