JPH0666835B2 - Telephone exchange system - Google Patents

Description

The present invention relates to a telephone exchange system, and more particularly to a telephone exchange system that does not have a function of transmitting calling subscriber identification information of a specific company (Nippon Telegraph and Telephone Company: NTT) (hereinafter referred to as a switchboard). , NON-ID exchange) is used when a communication line of a telecommunications carrier other than a specific company is used from a terminal device connected to the
The present invention relates to a telephone exchange system that generates a polarity in place of an N-ID exchange.

[Prior Art] Recently, a telecommunications carrier other than NTT has been admitted as a public communication line, and the communication line can be used at a lower charge than the NTT long-distance call charge. When using such a low-cost communication line, it is necessary to provide an adapter for a telephone as a terminal device.

When the communication line of a telecommunications carrier other than a specified company is available, this adapter is the lowest charge to use the line of which telecommunications carrier depending on the location of the communication partner and the communication time zone. It determines whether or not there is any, and performs dial exchange (addition of telephone number, etc.) necessary for selecting the communication line of the carrier with the lowest charge. For example, when calling from Tokyo to Osaka, if the line of Japan Telecom Co., Ltd., which is an example of a telecommunications carrier other than a specific company, has a low charge, a telephone as a calling side terminal 06- ○○○-○
When dialing XX, the adapter dials 008-06-XXXXX-XXXXX toward the subscriber exchange according to the judgment. This saves the telephone user the trouble of selecting a telecommunications carrier and adding a necessary telephone number.

FIG. 2 is a schematic block diagram showing a conventional telephone communication system in which a telecommunications carrier other than a specified company (hereinafter abbreviated as A company) and a communication line of the specified company are connected. Second
With reference to the figure, a switching device 2 is connected to a calling terminal 1. The reversal utilization device 2 responds to the reversal signal from the terminal device 13 on the called side to start calculation of a charge. The reversal utilization device 2 is connected to an adapter (dial exchange device) 3, and the adapter 3 is connected to a calling side relay exchange 5 via a NON-ID subscriber exchange 4. The originating side repeater exchange 5 is connected to the receiving side repeater exchange 11 through a communication line of a specific company, and further, the receiving side repeater exchange 11
A subscriber exchange 12 is connected to the. The called terminal 13 is connected to the subscriber exchange 12.

In the originating side relay exchange 5 and the receiving side relay exchange 11,
The exchanges 6 and 10 for interconnection are connected to each other, and the exchanges 6 and 10 for interconnection are connected to the first exchange 7 of the company A and the second exchange 9 of the company A, respectively. The exchange 7 and the second exchange 9 of the company A are connected by a communication line of a communication company other than the specified company.

Next, the operation will be described. When the telephone number of the receiving side terminal 13 is dialed from the calling side terminal 1, if the usage charge of the communication line of a company other than the specified company is lower than that of the communication line of the specified company, the adapter 3 allows the communication of the other company The carrier's communication line is selected and the necessary dialed numbers are added. Then, from the NON-ID subscriber exchange 4 through the originating relay exchange 5 and the interconnection exchange 6, A
The company's first exchange 7 is connected by automatic dialing. next,
The dial signal input from the calling terminal 1 is the adapter 3
Sent out from the NON-ID subscriber exchange 4, originating side repeater exchange 5, interconnection exchange 6, first exchange 7 of company A, communication line of a company other than a specific company, second exchange 9 of company A, mutual exchange The data is transmitted to the receiving side terminal machine 13 via the connection exchange 10, the receiving side repeater exchange 11 and the subscriber exchange 12.

[Problems to be Solved by the Invention] The conventional telephone exchange system is configured as described above, and the calling terminal 1 connected to the NON-ID subscriber exchange 4 is a vendor other than the specified company via the adapter 3. When the communication line of is selected, the NON-ID subscriber exchange 4
Has a structure in which even if the called terminal 13 responds and returns a response (polarization) signal, the polarized signal is not transmitted to the calling terminal 1. For this reason, even if the originating terminal 1 has the reversal utilization device 2, it is not possible to use the reversal utilization device 2 when a communication line of a company other than a specific company is selected. Further, there is a drawback that the adapter 3 for selecting a communication line of a company other than a specific company cannot be connected.

Therefore, a main object of the present invention is a telephone which enables a response (polarization) signal from a terminal on the receiving side to be delivered to the terminal on the transmitting side (device for reversing) through a NON-ID subscriber exchange. It is to provide an exchange system.

[Means for Solving the Problem] The present invention is directed to a calling side repeater exchange and a receiving side repeater exchange connected to a communication line of a specified company, and first and second connection lines connected to a communication line of a company other than the specified company. An exchange, the first exchange is connected to the originating relay exchange via the interconnection exchange, and the second exchange is connected to the destination relay exchange via the interconnection exchange, and at least the origination relay exchange. Is connected to a NON-ID subscriber exchange that does not have a function of transmitting the originating subscriber identification information to form a switching network, and a receiving-side terminal is provided between the NON-ID subscriber-exchange and the originating-side terminal. The device for reversing and recognizing that the communication has been established and the adapter for converting the dialed number are inserted, and the terminal device on the receiving side is connected to the relay exchange on the receiving side through the subscriber exchange. , In a telephone exchange system that outputs a response (reversal) signal from a terminal device on the receiving side in response to a dial signal sent from the terminal device on the transmitting side through an adapter, the telephone exchange system is connected to a first exchange and A response signal generating means is provided for receiving a response signal from the terminal device and outputting a response (reversal) signal to the reversal utilization device via the dial exchange device.

[Operation] In the telephone exchange system according to the present invention, a response signal generating means is provided in an exchange of a communication line other than a specific company, a response signal is received from a terminal device on the receiving side, and a dial exchange is connected to the terminal device on the transmitting side. By sending a response signal back to the device, the device using the response signal can be operated.

Embodiment of the Invention FIG. 1 is a schematic block diagram of an embodiment of the present invention.
The telephone exchange system shown in FIG. 1 is the same as the embodiment shown in FIG. 2 except that the first exchange 7 of the company A is provided with the response signal generator 8. The response signal generator 8 is provided for receiving a response (polarization) signal from the terminal device 13 on the receiving side and transmitting a response (polarization) signal to the terminal device 1 on the transmitting side.

Next, the operation will be described. When the number of the receiving side terminal 13 is dialed from the calling side terminal 1, if the usage fee of the communication line of a company other than the specified company is cheaper than the communication line of the specified company, the receiving side terminal 13 responds, The response signal from the first exchange 7 of company A is detected. Then, the response signal generator 8 connected to the first exchange 7 of the company A sends a response signal to the adapter 3 of the originating terminal 1. Adapter 3
When the response signal is detected, the device generates a reversal in the reversal utilization device 2, and the reversal utilization device 2 operates by this reversal.

In the embodiment shown in FIG. 1, the originating side terminal 1 and the reversal utilizing device 2 are connected, but the originating side terminal 1 is provided with a function utilizing reversing. However, the present invention can be applied.

[Effects of the Invention] As described above, according to the present invention, the response signal generator is connected to the first exchange, and the response (polarization) signal from the receiving-side terminal is transmitted via the NON-ID exchange. Since it is delivered to the terminal on the side, even if the switching device is connected to the terminal side of the subscriber exchange that does not have the function of sending the subscriber identification information, the communication line of the telecommunications carrier other than the specified company Can be used, and the adapter can be installed without worrying about the operation of the reversal utilizing device.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of an embodiment of the present invention.
FIG. 2 is a schematic block diagram of a conventional telephone exchange system. In the figure, 1 is a terminal device on the originating side, 2 is a device for using reversal, and 3
Is an adapter, 4 is a NON-ID subscriber exchange, 5 is a transit relay exchange, 6 and 10 are interconnection exchanges, 7 is the first exchange of company A, 8 is a response signal generator, and 9 is second of company A. Switch, 11 is a relay relay switch on the receiving side, 12 is a subscriber switch,
Reference numeral 13 denotes a transmitting terminal.

Claims (1)

[Claims] 1. A calling side repeater exchange and a called side repeater exchange connected to a communication line of a specified company, and first and second exchanges connected to a communication line of a company other than the specified company. A first exchange is connected to the originating relay exchange via an interconnection exchange, and a second exchange is connected to the destination relay exchange via an interconnection exchange and at least to the originating relay exchange. Is connected to a NON-ID subscriber exchange that does not have the function of transmitting the calling subscriber identification information to form a switching network.
D: A switching device for recognizing that the communication with the called terminal has been established between the subscriber exchange and the calling terminal, and an adapter for converting a dial number is inserted, and the incoming call is received. The receiving side terminal device is connected to the side relay exchange through the subscriber exchange, and in response to the dial signal being sent from the calling side terminal through the adapter, the receiving side terminal device responds (switches). In a telephone exchange system that outputs a signal), a response (reversal) signal is sent to the reversal utilization device via the adapter, which is connected to the first exchange and receives a response signal from the called terminal device. A telephone exchange system comprising a response signal generating means for outputting.