JP2004253867A - Call termination carrier authenticating method and selecting relay network - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a call termination carrier authenticating method capable of refusing connection by a call termination carrier which has not entered into an agreement between carriers. <P>SOLUTION: When receiving an IAM signal from the selecting relay network 14 of a selecting relay carrier C, the incoming call network 16 of a call termination carrier D generates an ACM signal containing its own carrier code and transmits the signal to the network 14. An exchange 100 of the network 14 receives the ACM signal transmitted from the network 16, and checks whether the carrier D is registered in a call termination carrier information list 102 on the basis of the carrier code contained in the ACM signal. If the carrier D is not registered, the exchange 100 transmits an REL signal to both a caller network 12 and the network 16 to refuse the call connection, and if the carrier D is registered, the exchange 100 continues the call connection processing. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incoming call carrier authentication method and a selective relay network in a selective relay network, and more particularly, to a call receiving company authentication method and a call receiving business for rejecting a connection with a call receiving operator who has not concluded a business agreement with a network fee. And a selective relay network including a circuit exchange for performing user authentication.
[0002]
[Prior art]
When interconnecting between telecommunications carriers, the interface between the carrier networks is set in accordance with the Recommendation "JJ-90.10 Common Interface Specification for Interconnection" by the Telecommunications Telecommunications Commission (TTC). However, the settlement of the network usage fee is entrusted between the operators and is determined by consultation between the operators, but usually, the terminating operator or the like charges the selected relay operator for the network usage fee. Note that the selected relay business is a business that charges the user, and the business whose caller has registered for My Line is usually the selected relay business. If the subscriber who has registered for My Line makes a call without dialing the identification number of the telephone company "00XY", for example, the telephone company that has registered for My Line (selected relay company) will be charged for the call charge.
[0003]
[Non-patent document 1]
TTC standard "JJ-90.10 Common interface specification for interconnection", 1st edition, Telegraph and Telephone Technical Committee, enacted November 26, 1998.
[0004]
[Problems to be solved by the invention]
Generally, a telephone company provides a line through which a call can be made to a partner at the request of the subscriber, but the subscriber must pay the telephone company to the telephone company after the call is completed. That is, the subscriber cannot use the telephone company's line for free. The same applies between the selective relay operator and the receiving operator. When the selective relay operator requests a connection to the receiving operator and is provided with a network, the selective relay operator uses the network for the receiving operator. You need to pay a fee. FIG. 5 shows the relationship between such a subscriber and a telephone company, and the relationship between a selective relay company and a receiving company.
[0005]
However, in the past, selective relay operators have established network usage fees through business negotiations, as they have connected to terminating businesses regardless of whether network usage fees have been determined through business negotiations. When a connection is made to a non-receiving business operator, there is a problem that the network usage fee that should be paid to the receiving business operator cannot be paid.
[0006]
The present invention solves such disadvantages of the prior art, and provides a called company authentication method capable of refusing connection with a called company that has not concluded a business agreement with the network usage fee, and a circuit switch for performing authentication of the called company. It is an object of the present invention to provide a selective relay network.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a called party authentication method according to the present invention is a called party authentication method in a selective relay network for connecting a calling side network and a called side network. When receiving the call response signal transmitted from the, based on the received carrier information identifying the called carrier included in the call response signal, the called carrier enters into a carrier agreement with the selected relay carrier. It is characterized in that it checks whether or not an incoming call carrier is registered in a registered incoming call carrier information list, rejects connection when it is not registered, and connects when it is registered.
[0008]
The selective transit network according to the present invention is a selective transit network that connects the originating network and the destination network, and is a terminating carrier information in which a terminating carrier having a carrier agreement with the selective transit carrier is registered. When a call response signal transmitted from the called network during the telephone connection process is received, the call receiver receives the call based on the call receiver information that identifies the call receiver included in the call response signal. A line having an authentication means for checking whether or not the caller is registered in the carrier information list, and a connection means for rejecting the connection when the called carrier is not registered in the called carrier information list and connecting when the called carrier is registered. It is characterized by including an exchange.
[0009]
In this case, it is preferable that the circuit switch is a circuit switch that first receives a call response signal transmitted from the destination network.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of an incoming call carrier authentication method according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows an example of the configuration of a communication system to which a receiving carrier authentication method according to the present invention is applied. This communication system is composed of a network 12 of a connection operator B, a selective relay network 14 of a selection relay operator C, and a network 16 of a connection operator D, and an exchange (not shown) included in the network 12 has a subscriber. A telephone set 10 is accommodated, and an exchange (not shown) included in the network 16 accommodates a telephone set 18 of the subscriber E. In FIG. 1, it is assumed that the subscriber A calls the subscriber E, the network 12 is the originating network, the network 16 is the destination network, the connection operator B is the transmitting operator B, and the connection operator D is the receiving operator. Called D.
[0011]
In this embodiment, the networks 12 to 16 provide an interface based on the JJ-90.10 interconnection common interface specification. The exchange is limited to a line exchange. Strictly speaking, it is limited to exchanges that perform communication using a protocol that allows carrier information to be carried on signals. In the ISUP protocol defined in JT-Q762, 763, 764 of the TTC recommendation, carrier information can be carried on a call signal (IAM signal) and a call response signal (ACM signal). Normally, a circuit switch performs communication using this ISUP protocol.
[0012]
The exchange 100 included in the selective transit network 14 is a line exchange for connecting the telephone 10 accommodated in the originating network 12 and the telephone 18 accommodated in the destination network 16. The above manages the receiving business operator information list 102 for authentication. Here, the terminating carrier information list 102 is a list in which terminating carriers having a carrier agreement with the selected relay carrier C are registered in advance, and terminating carrier information for identifying the terminating carrier, for example, It registers the carrier code or the receiving carrier identification number. In this embodiment, the receiving business operator registered in the receiving business information list 102 has concluded a business agreement with the selected relay business operator C on the method of adjusting the network usage fee.
[0013]
The exchange 100 authenticates the called company based on the called company information list 102. Specifically, when a call response signal (ACM signal) is received from the terminating network 16 during the telephone connection process, the incoming call carrier D is received based on the incoming call carrier information of the incoming call carrier D included in the ACM signal. Is checked in the called company information list 102, and attempts to authenticate that the called company D is a company with a business agreement. When the authentication succeeds, the ACM signal from the destination network 16 is transferred to the calling network 12 to continue the call connection process. When the authentication fails, both the calling network 12 and the destination network 16 are used. Sends a disconnection signal (REL signal) to the destination network 16 to reject the connection. Thereby, the selective relay operator C can reject the connection of the receiving operator who has not concluded the operator agreement on the network usage fee.
[0014]
The operation of the communication system of FIG. 1 will be described with reference to a signal sequence shown in FIGS. 2 and 3, taking as an example a case where subscriber A of telephone 10 calls subscriber E of telephone 18. Here, FIG. 2 shows a signal sequence in a case where the authentication of the called company has failed, and FIG. 3 shows a signal sequence in a case where the authentication of the called company has been successful.
[0015]
When the calling party (subscriber A) dials the telephone number of the called party (subscriber E) with the telephone set 10, the telephone number is transmitted to the calling network 12 of the calling company B. Upon receiving the telephone number transmitted from the telephone 10, the originating network 12 generates a call signal (IAM signal) including the telephone number and transmits it to the selective relay network 14. The IAM signal is transferred to the destination network 16 via the exchange 100 of the selective relay network 14.
[0016]
When the destination network 16 receives the IAM signal from the originating network 14, it selects the telephone set 18 based on the telephone number included in the IAM signal, sends out a calling signal, and rings the bell. In addition, it generates a call response signal (ACM signal) including the carrier code of the user (the terminating carrier D) or the terminating carrier identification number as the terminating carrier information and transmits it to the selective relay network 14.
[0017]
The exchange 100 of the selective transit network 14 receives the ACM signal transmitted from the destination network 16, and receives the authentication information managed by the receiving company D on the main memory based on the receiving company information included in the ACM signal. It checks whether or not it is registered in the receiving business operator information list 102, and attempts to authenticate that the receiving business operator D is a receiving business operator with a business agreement.
[0018]
If the authentication of the called party fails, the exchange 100 transmits a disconnection signal (REL signal) to both the originating network 12 and the terminating network 16 as shown in FIG. When the source network 12 and the destination network 16 receive the REL signal from the selective relay network 14, the telephones 10 and 18 are disconnected. Thereby, the selective relay operator C can reject the connection of the receiving operator who has not concluded the operator agreement on the network usage fee.
[0019]
The "reason display" column of the REL signal transmitted from the selected relay network 14 to the originating network 12 and the destination network 16 describes "other service or option unavailable class". This display is used when the connection is rejected due to the authentication process of the exchange, etc., and is used to analyze the cause when a complaint such as connection failure is received from another business or user .
[0020]
When the authentication of the called company is successful, the exchange 100 transfers the ACM signal received from the called network 16 to the calling network 12, as shown in FIG. 3, and continues the call connection process. On the other hand, when the called network (subscriber E) determines that the called party (subscriber E) is not busy (is vacant), the called network 16 transmits an RBT (ring tone) to the selected relay network 14. The RBT is transferred to the telephone 10 via the selective relay network 14 and the calling network 12. When the called party answers, the called network 16 stops sending the RBT, generates a response signal (ANM signal), and transmits it to the selective relay network 14. The ANM signal is transferred from the selective relay network 14 to the originating network 12. Subscriber A and subscriber E start a call.
[0021]
In addition, when the response of the subscriber E is detected, the destination network 16 starts measuring the talk time for charging. The selective relay network 14 and the originating network 12 also start measuring the talk time for charging when receiving the ANM signal. The selective relay operator C charges the subscriber A, and the transmitting operator B and the receiving operator D charge the selective relay operator C. In the common interface specification for interconnection of JJ-90.10, the timing for starting the charging of the network usage fee is when the ANM signal is detected, and the timing for stopping the charging is when the REL signal is detected.
[0022]
FIG. 4 is another configuration example of a communication system to which the called party authentication method according to the present invention is applied. This communication system includes a network 20 of a connection provider D, a selection relay network 22 of a selection relay provider G, and a network 24 of a connection provider H. In this embodiment, the network 20 is a source network. The network 24 operates as a destination network. In the selective relay network 22, the originating network 20 and the destination network 24 are connected via a plurality of circuit switches, for example, switches 200, 202 and 204.
[0023]
As in the case of the selective relay network 14 in FIG. 1, the selective relay network 22 receives the ACM signal transmitted from the destination network 24 and receives the ACM signal based on the receiver business information included in the ACM signal. When the authentication fails, a REL signal is transmitted to the source network 20 and the destination network 24. In this case, the authentication of the receiving company can be performed by any of the exchanges 200 to 204. However, when the authentication is performed by the exchange 200 located closest to the outgoing side of the selective relay network 22 when viewed from the destination network 24, the REL signal transmitted from the exchange 200 is transmitted when the exchange 202 or the exchange 204 transmits the REL signal. It arrives at the destination network 24 at the latest speed.
[0024]
In the receiving network 24, if the reception of the REL signal transmitted from the selective relay network 22 is delayed, the disconnection of the called party is delayed, so that the called party may respond before the disconnection. In such a case, the terminating carrier H of the destination network 24 charges a network usage fee to the selected relay carrier G assuming that the call has been made (handled as a completed call). However, the selective relay operator G sends a REL signal to the calling network 20 and the called network 24 to request disconnection, and no call is made (treated as an incomplete call). You can't charge for calls. Therefore, the selective relay operator G receives a loss corresponding to the network usage fee paid in response to the request of the receiving operator H.
[0025]
Therefore, in the embodiment of FIG. 4, the switch 204 closest to the outgoing side when viewed from the source network 20 among the switches 200, 202, 204 of the selective relay network 22, that is, the destination network of the switches 200, 202, 204 The exchange 204, which can receive the ACM signal from the switch 24 first, authenticates the called party. As a result, the REL signal arrives at the destination network 24 earliest, and the destination network 24 has a high possibility of terminating the disconnection process before the called party answers. It is possible to reduce the occurrence of a situation in which a so-called REL signal and an ANM signal pass each other. Therefore, when the authentication of the receiving operator H fails, the selective relay operator G is less likely to be requested to pay a network usage fee by the receiving operator H.
[0026]
【The invention's effect】
As described above, according to the receiving company authentication method of the present invention, in the selective relay network, based on the receiving company information included in the call response signal transmitted from the receiving company during the telephone connection process, It checks whether the receiving carrier is registered in the receiving carrier information list, and rejects the connection if it is not registered, so the connection between the selected carrier and the receiving carrier that has not concluded a carrier agreement is established. Can be refused. As a result, it is possible to prevent troubles in the charge settlement between the businesses.
[0027]
Further, according to the selective relay network according to the present invention, when the originating network and the destination network are connected via a plurality of circuit switches, the authentication processing of the called carrier is performed by the exchange closest to the destination network. Therefore, the disconnection signal transmitted at the time of authentication failure reaches the destination network earlier, and the situation in which the called party answers before disconnection is reduced. As a result, in the case where the authentication is unsuccessful, the situation where the selective relay operator is required to pay the network usage fee from the receiving operator is reduced.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration example of a communication system to which a receiving carrier authentication method according to the present invention is applied.
FIG. 2 is a diagram showing a signal sequence in a case where authentication of a called carrier in the communication system of FIG. 1 has failed.
FIG. 3 is a diagram showing a signal sequence in a case where authentication of a called party in the communication system of FIG. 1 is successful.
FIG. 4 is a block diagram showing another configuration example of the communication system to which the called party authentication method according to the present invention is applied.
FIG. 5 is a diagram illustrating a relationship between a subscriber and a telephone company and a relationship between a selective relay operator and a receiving operator;
[Explanation of symbols]
10, 18 Telephone 12 Calling network 14 Selective relay network 16 Calling network 100 Switch 102 Termination carrier information list for authentication

Claims (4)

A method for authenticating a called party in a selective relay network for connecting a calling network and a called network, the method comprising:
When a call response signal transmitted from the called network is received during the telephone connection process, the call receiver selects and relays the call based on the call receiver information that identifies the call receiver included in the call response signal. Check if the called carrier that has a carrier agreement with the carrier is registered in the pre-registered called carrier information list, reject connection if not registered, and connect if registered. An incoming call carrier authentication method characterized by the following. 2. The method according to claim 1, wherein the called company information list is a list of called companies that have a business agreement for network usage charges. In a selective relay network connecting the originating network and the destination network, the selective relay network
When receiving a called carrier information list in which a called carrier having a carrier agreement with the selected relay carrier and a call response signal transmitted from the called network during the telephone connection process, the call response An authentication unit for checking whether or not the receiving company is registered in the receiving company information list based on the receiving company information for identifying the receiving company included in the signal; A connection switching unit having connection means for rejecting a connection when the connection is not registered, and connecting means for making a connection when the connection is registered. 4. The selective switching network according to claim 3, wherein said circuit switching device is a circuit switching device that first receives a call response signal transmitted from a destination network.

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