JP3106022B2 - ISDN charging control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IDN in an ISDN network.
The present invention relates to an SDN charging control method.

[0002]

2. Description of the Related Art Conventionally, a billing control method in an ISDN public network is performed by a subscriber connected to the ISDN public network.
As for the billing information, usually the calling subscriber is notified of the billing information as billing information from the ISDN public network at the end of the call. Such a conventional method is called a charge notification service, and is called ISDN.
It is generally known as a service basically provided by the ISDN public network to terminals connected to the public network.

When a communication device connected to the public network is a private branch exchange (hereinafter referred to as PBX) or a key telephone device, a device for managing a call charge is provided inside the communication device, and the public network is provided. In general, charge management is performed based on a response signal or a call termination signal from a user.

[0004]

However, the conventional I
The rate notification service currently provided as part of the billing service in the SDN public network has a problem that the method of utilizing the information is limited because rate information is provided at the end of a call.

[0005] For example, when the communication device connected to the ISDN public network is a key telephone device or a PBX, a plurality of extensions are connected in the communication device, and one call via the public network is connected to another extension. In many cases. When an extension terminal during a call transfers a call to another extension terminal, the extension terminal during the call performs an operation for starting the transfer, temporarily suspends the office line, and then transfers the extension to the transfer destination. Call a destination extension by dialing the number. After the transfer extension response,
The transfer operation ends when the extension terminal that has been talking goes on-hook, and a call between the office line that has been on hold and the transferred extension terminal is started during that time.

[0006] Normally, the charge that the extension terminal that performed the transfer during the call is the sum of the call charges of the two extension terminals when the transferred extension terminal ends the call with the office line.
Since the information is notified from the N public network, the charges used by each extension terminal cannot be classified. Therefore, the communication device needs to distribute the notified fee information to each extension involved in the call. For this reason, there has been a problem that it is necessary to newly add hardware and software for distributing the fee on the communication device side.

An object of the present invention is to solve the problem of the ISDN charging control system by using the minimum necessary software without restricting the connection conditions of the communication device and providing special hardware when performing the ISDN charging. Aim.

[0008]

In order to achieve the above-mentioned object, the present invention provides an ISDN charging control system, wherein an arbitrary extension terminal transmits to another extension terminal while communicating with an ISDN network. Message sending means for sending a charge information request message to the ISDN network after the transfer to the terminal is completed
When the message receiving means for receiving a billing notification of the ISDN network or we charge information notification message, stores the billing notification as <br/> charging information of the arbitrary extension terminal, call disconnection of the other extension terminal Storage control means for storing a charge notification of a charge information notification message later received from the ISDN network as a charge of the other extension terminal.

[0009]

According to the present invention, when a communication device originates a call to the ISDN public network and enters a talking state, the ISDN public network provides the fee information in response to the request for the fee information from the communication device. Thus, the communication device can easily grasp the charge information even during the call.

[0010] Therefore, when an arbitrary extension terminal in the communication device transfers to another terminal, billing information can be obtained for each extension terminal.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a communication apparatus connected to an ISDN public network according to the ISDN charging control system of the present invention.
FIG. 3 is a block diagram showing a system configuration in a case where the example is taken.

In FIG. 1, reference numeral 100 denotes a PBX communication path switch. 101 and 109 are communication path switches 10
0, the line circuit controller 101 notifies the central controller 105 of information such as the calling of the extension terminals 102 and 110 and the disconnection of the dial, and the line circuit controller 101 from the central controller 105. Control information for controlling the extension terminal 102 is notified to the control unit of the line circuit control device 101 by an instruction to control the extension terminal 102. Reference numeral 103 denotes an IS having an interface composed of an ISDN communication B channel and a control D channel.
It is a DN office line trunk (ITRK), and connects the office line 107 of the ISDN public network 108 and the communication path switch 100. Reference numeral 106 denotes a storage device which exchanges data with the central control device 105 via the central control bus 104 and stores the processing state of PBX control data and the like.

FIG. 2 shows that the extension terminal 102
This shows an example in which a call is transferred to the extension terminal 110 after an outgoing call with the SDN office line.

When the extension terminal 102 transfers a call to the extension terminal 110, the extension terminal 102 performs an operation for starting the transfer, temporarily suspends the office line 107, and dials the extension number of the transfer destination. Use to call the destination extension. After the transfer extension response, when the extension terminal 102 goes on-hook, the transfer operation is completed, and a call between the office line 107 and the extension terminal 110 which have been on hold during that time is started.

FIG. 3 is a diagram showing control conditions necessary for separating the fee information between the ISDN public network 108 and the PBX.

When the ISDN public network 108 and the PBX are in a call, a message is transmitted and received on the D channel connected between the ISDN public network 108 and the PBX. Defines a message for receiving fee information in response to the request.

FIG. 4 shows a message used for receiving charge information. A charge information request message for requesting charge information is defined from the PBX side, and a charge rate request message for the PBX is defined from the ISDN public network side. A charge information notification message for notifying information is newly defined.

According to the defined message, the PBX:
When the extension terminal 102 completes the transfer of the central office telephone call to the extension terminal 110, the charge information information message is notified to the ISDN public network 108 through the D channel, so that the ISDN public network 10 receiving the charge information request message receives the charge information request message.
In step 8, the call charges for the calls made by the extension terminal 102 are totaled.

This charge notification message is notified to the PBX through the D channel. In the PBX, information indicating the call charge notified by the charge notification message is:
It is stored in the storage device 106.

Next, regarding the call charge of the extension terminal 110, when the ISDN office line 108 and the extension terminal 110 end the call, the extension terminal 102 requests the ISDN public network 108 after the charge request message. By treating the call charge as billing information corresponding to the extension terminal 104, the information of the charge notification in the "disconnection" type message provided in the normal release sequence when the call with the ISDN line is terminated is transmitted to the PBX. , It is possible to classify the call charges of the extension terminal 102 and the extension terminal 110.

As described above, according to the present embodiment, the ISDN network 1
08, regardless of the type of terminal device connected to it,
By transmitting and receiving a charge request message and a charge notification message for obtaining charge information, a charge notification service in a call state that is not supported by the current charge notification service can be realized. As a result, there is an effect that service conditions in ISDN charging control are enhanced.

In the above-described embodiment, the billing method in the case of transferring from an arbitrary extension terminal to another extension terminal has been described. In response to the transmission of the request message, the charging information up to that time can be obtained for each extension terminal at any time.

[0024]

As is clear from the above embodiment, the present invention has the following effects when charging control is considered in a terminal device subscribed to the ISDN network.

(1) In a system in which the billing conditions are dispersed, such as a key telephone device and a private automatic telephone exchange, there are many opportunities to transfer one local line call to a plurality of extensions. In such a case, according to the present invention, it is possible to charge for each extension.

(2) It is anticipated that effective use of the flexphone service provided by the ISDN public network will be achieved by introducing the present technology.

[Brief description of the drawings]

FIG. 1 is a block diagram of a private branch exchange system to which an ISDN charging control system of the present invention is applied.

FIG. 2 is an explanatory diagram illustrating an example of a case where the charging control method according to the present embodiment is distributed.

FIG. 3 is a diagram showing transmission and reception of an ISDN message for obtaining a fee report.

FIG. 4 is a diagram showing an example of a message on layer 3 necessary for obtaining fee notification information.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Call path switch 101, 109 Line circuit control device 102, 110 Extension terminal 103 ISDN office line trunk 104 Central control bus 105 Central control device 106 Storage device 107 Office line 108 ISDN public network

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-3-295351 (JP, A) JP-A-61-10353 (JP, A) JP-A-63-97055 (JP, A) JP-A-1- 135177 (JP, A) JP-A-1-267577 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 15/34

Claims (1)

(57) [Claims] 1. A charging control method for a communication device which accommodates a plurality of extension terminals and is connected to an ISDN network, wherein when any extension terminal transfers to another extension terminal during communication with the ISDN network, After the transfer to the other extension terminal is completed, a charge information request message is sent to the ISDN network .
And message sending means that, the message receiving hand to receive the charging notification of the ISDN network or we charge information notification message
Stage and the charging notification was stored in <br/> and billing information of the arbitrary extension terminal, the IS after call disconnection of the other extension terminal
A storage controller for storing a charge notification of a charge information notification message received from a DN network as a charge of the other extension terminal;
ISDN charging control method characterized by comprising a stage.