JPS63234694A - Opposite party identification system for incoming call - Google Patents

Abstract

PURPOSE:To enable to identify an opposite party prior to start communication by corresponding plural dial-in telephone numbers being incoming telephone numbers to a terminal equipment one to one to caller numbers. CONSTITUTION:An extension designation number sent from subscriber exchanges 4, 5 accommodating a dial-in service subscriber terminal equipment to a terminal equipment 9 is not used to select an incoming call extension but assigned one to one corresponding to the opposite party. In calling an extension terminal equipment of the terminal equipment 6, the caller dials a dial-in telephone number assigned to itself. When the subscriber line exchanges 4, 5 accommodating the terminal equipment recognize that the incoming telephone number is a dial-in telephone number, the several digits of the end are sent to the terminal equipment 9 as the extension designation number. The extension designation number corresponds one to one to the caller and when the equipment 9 receives the extension designation number, it is informed as opposite party identification information to an extension terminal equipment 14. Thus, it is possible to identify the opposite party to start the communication.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for identifying the other party when receiving a call.
Relates to a method for identifying a calling party.

[Conventional technology]

Existing public telephone networks do not have a function to identify the other party before starting a communication, so after starting communication when a call arrives, the calling party (hereinafter simply referred to as the other party) is identified using voice or data signals. The current situation is that Therefore, by identifying the other party before starting communication, it is inconvenient to provide a service corresponding to the other party, or to allow communication only with a specific other party.

Conventionally, when using a method to identify the other party before starting communication, a telephone line is connected for each party, the same number of communication terminals are installed on the white side, and incoming telephone numbers are assigned to each party on a one-to-one basis. Measures are taken to identify the other party depending on whether the call arrives at the terminal.

[Problem that the invention seeks to solve]

In the above-mentioned prior art, since the communication terminals and the other parties correspond one-to-one, it is necessary to increase the number of telephone lines and communication terminals each time the number of other parties increases, which reduces the cost of telephone line equipment and the cost of service.

SUMMARY OF THE INVENTION An object of the present invention is to provide a system that can identify the other party before starting communication without adding telephone lines or communication terminals to accommodate the number of parties.

[Means for solving problems]

The present invention provides a public network telephone number (area code x ten area code y + subscriber number 2) on the extension of a private branch exchange or key telephone.
A terminal equipment is installed on a telephone line for a continuous dial dial-in service (hereinafter simply referred to as a dial service) that provides a continuous dial dial-in service (hereinafter referred to simply as a dial service), and a plurality of dial-in telephone numbers are used as incoming telephone numbers to the terminal equipment. When a call is received to the dial-in telephone number, the designated extension number (lower-order number of the above dial-in telephone number) is sent from the subscriber line exchange that accommodates the terminal equipment to the terminal equipment. digit 2 or a part of digit 2) as information for identifying the other party in the terminal equipment, or convert it into information convenient for the extension terminal and notify it from the terminal equipment to the extension terminal. Features.

[For production]

Dial service originally assigns a public network telephone number to an extension connected to a terminal equipment such as a private branch exchange or key telephone, and when the other party dials the dial-in telephone number, the lower digits of the telephone number are as the designated extension number,
A designated extension number is automatically sent from the subscriber line exchange accommodating the dial-in service subscriber terminal equipment to the terminal equipment,
The terminal equipment is of a type that calls the extension corresponding to the designated extension number. In this case, the connection between the terminal equipment and the exchange can be represented by a telephone line for dial-in service, so there is no need to install a subscriber line for extension calls. In addition.

For dialing services, see, for example, "Technical Reference Materials for Using Telephone Networks," Telecommunications Association.

Details are given on pages 31-39.

The present invention uses this dial-in service method to
When receiving a call, identify the calling party. For this reason, the extension designation number sent from the subscriber line exchange that accommodates the dial-in service subscriber terminal equipment to the terminal equipment is not used to select the extension for incoming calls, but is used only when the caller is dealing with the other party.
Allocate 1 to 1. When the caller calls the extension terminal of the terminal equipment, the caller dials the dial-in telephone number assigned to the caller. At the local line exchange that houses the terminal equipment,
When the incoming phone number is recognized as a dial-in phone number, the last few digits are sent to the terminal equipment as an extension designation number. This designated extension number is one-to-one with the caller.
When the terminal equipment receives the extension designation number, it notifies the extension terminal of the extension designation number as partner identification information. This makes it possible to identify the other party before starting communication without adding subscriber telephone lines or communication terminals to accommodate the number of parties.

〔Example,〕

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

FIG. 1 is an overall configuration diagram of an embodiment of the present invention.

In Figure 1, 1 is the public telephone network, 2 is the telephone of the other party, 3 is the white side which is the receiving party, and 4 is the subscriber line exchange that accommodates the telephone 2 of the other party (hereinafter referred to as the originating L'S). ), 5 is a subscriber line exchange that accommodates the white side 3 (hereinafter referred to as terminating LS)
, 6 is a general subscriber line, 7 is a telephone line for dial-in service that assigns a public network telephone number to the extension of a private branch exchange or key telephone (hereinafter referred to as a DID line), 8 is a trunk line, and 9 is the white side This is terminal equipment installed at The terminal equipment 9 has a DID line interface circuit 10, an extension terminal interface circuit 11, a call path switch 12, and a CPU 13 that also serves as a partner information processing unit.
A plurality of extension terminals 14 (telephones, personal computers, etc.) are connected through connection lines 15 (hereinafter referred to as extensions) up to 4. Here, the terminal equipment 9 can be realized by a PBX or key telephone main device, and includes a DID line interface circuit 10, an extension terminal interface circuit 11, a call path switch 12, and a CPU.
Circuits other than 13 are not directly related to the present invention and are therefore omitted from the diagram.

FIG. 2 shows a processing flow related to the present invention in the CPU 13 in the terminal equipment 9.

The operation shown in FIG. 1 will be explained below with reference to FIG.

First, it is assumed that a plurality of telephone numbers for dial-in to the terminal equipment 9 are registered in the terminating LS 5 and are assigned one-to-one to each other. When the dial-in telephone number assigned to the other party is dialed from the other party's telephone set 2, the call arrives at the terminating LS 5 via the general subscriber line 6, the originating LS 4, and the trunk line 8. The destination LS 5 recognizes that the telephone number is a dial-in telephone number, and the last few digits of the number are sent to the terminal equipment 9 as an extension designation number (hereinafter referred to as a DID number). Since the DID line 7 is used between the terminal equipment 9 and the terminating LS 5 to form a representative group, there is no need to add subscriber lines to accommodate the number of parties. The number of digits for the DID number can be selected from a preset number of 1 to 4 digits, but
In the following example, we will proceed with the discussion assuming 4 digits.

For example, if the dial-in phone number is 03-599,
-1234. When the terminal number [9] receives the DID number "1234" at the DID line interface circuit 10 (step 103), it records the DID number in the CPU 13 (step 104), and then completes the DID number reception according to the dial-in service connection operation sequence. A signal (DC loop off) is sent to the destination LS5 (step 105).

Note that, prior to this, when the terminal equipment 9 receives a paging signal from the terminating LS 5 (step 101), it sends a primary response signal (DC loop on) to the terminating LS 5 according to the dial-in service connection operation sequence (step 10).
2). Subsequently, the terminal equipment 9 makes a call from the extension terminal interface circuit 11 to the extension terminal 14 (step 10).
6). In the conventional dial-in service, DI
An extension corresponding one-to-one with the D number "1234" is called, but in the present invention, the C number is called depending on the incoming DID line and DID number.
By equipping the PU 13 with some kind of correspondence table information, ■ Calling all extension terminals at once every time a call arrives; ■ Grouping the extension terminals 14 in advance and calling a specific one according to the incoming DID line or DID number. This is done by calling only the extension terminals belonging to the group. That is, the DID number is not used to select one extension terminal to make an incoming call.

Therefore, it is not necessary to install extension terminals 14 in one-to-one correspondence with the number of parties.

When making an extension call in step 106, the terminal equipment 9:
The other party identification information is sent to the extension terminal 14. The other party's identification information is
Either the DID number "1234" received earlier from the destination LS5 is sent as is, or it is converted to the other party's name etc. by the CPU 13 and sent.

This is a feature of the present invention. In this case, the opportunity to send the partner identification information may be before the extension terminal 14 responds, or immediately after the response is detected by the extension terminal interface circuit 11, the call path switch 12 is activated to enable communication with the other party. It may be before. FIG. 2 shows an example in which the message is sent before the extension terminal 14 responds. The transmission means for sending the partner identification information may also be voice, modulated signal, etc. depending on the specifications of the extension 15 and extension terminal 14. For example, when sending a message before the extension terminal 14 answers, if the extension 15 is a conventional analog telephone line and the extension terminal 14 is a telephone with a speaker, the silent period of the ringing signal (16 Hz, 1 second transmission 2
If the signal repeats interruptions for seconds, send it audibly during the interruption period of 2 seconds and listen to it through the speaker of the extension terminal 14. If the extension 15 is a digital telephone line and the extension terminal 14 is a telephone equipped with a discontinuity function, a call start instruction is sent. A possible method is to send a digital signal before and after the signal and display it on the display of the extension terminal 14.

When the terminal equipment 9 finishes sending the partner identification information and detects a response from the extension terminal 14 (step 107), it sends a secondary response signal (DC loop on) to the terminating LS 5 according to the dial-in service connection operation sequence (step 10).
8). Furthermore, the communication path switch 12 is activated (step 109), and the extension 15 corresponding to the extension terminal 14 that responded is connected to the incoming DID line 7. On the other hand, when the secondary response signal is detected by the destination LS 5, a communication path between the telephone 2 of the other party and the white party 3 is established in the public telephone network 1.

As a result, it is possible to confirm from which party the call is coming from, using the party identification information based on the DID number, before starting the call. The terminal equipment 9 thereafter monitors the end of the call (step 110). When a call termination signal (for example, on-hook) is detected from the extension terminal 14, the call path switch 12 is restored and returned to the initial state (step 111).

The above explanation uses an example of identity verification when the other party calls you directly. However, the method of the present invention allows incoming calls to the telephone of a subscribed member to be transferred to an automatic call forwarding service of the existing telephone network or a commercially available incoming call. It can also be used to confirm the transfer source in a system such as a so-called telephone number service, in which the transfer telephone transfers the information to the white party 3 and receives the information on behalf of the user. That is, if the member's telephone is considered to be the other party's telephone 2 in FIG. 1, by assigning the above-mentioned dial-in telephone number to the white party 3 as a forwarding telephone number to the member, before starting communication, It is possible to confirm which member the incoming call has been forwarded to from the other party's identification information based on the DID number.

In this case, if the member subscribes to the automatic call forwarding service of the existing telephone network, the transfer procedure is to dial the originating LS4 from the member's telephone 2, and if the member's telephone 2 is a call forwarding telephone, dial the calling LS4. This is done by operating switches, etc., but the details are omitted here.

〔Effect of the invention〕

As described above, according to the present invention, there is no need to add telephone lines or communication terminals to the number of parties, and even if a call is received from any party to the same communication terminal, it is possible to respond before responding and starting communication. You can easily identify the other party. If the DID number is kept private, it can be used to confirm the identity of the other party, and the identity of the other party can be verified on the receiving end whether the caller is making a call from a communication terminal at home or from outside. In membership services, it can be used not only to confirm membership, but also to confirm the forwarding source in services such as telephone numbers combined with call forwarding services, and to automatically identify the receiving client in services such as proxy reception.

In addition, by connecting a computer, etc. to the extension terminal, it is easily possible to provide more advanced services, such as searching a database using the other party identification information sent from the terminal equipment as a key and displaying it before starting a call. Become. Furthermore, the present invention does not require any change in the functions of the exchange of the public network or the communication terminal on the other side, and can be realized only by the functions of the terminal equipment on the white side, which is the receiving side. Moreover, since it can be realized by control by the CPU of the terminal equipment, the terminal equipment can be any device as long as it has an interface circuit with the DID line, and existing equipment can be used to identify the other party.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an embodiment of the present invention, and FIG.
It is a flowchart for explaining the operation of the figure. 1...Public telephone network, 2...Telephone of the other party, 3.
...White side which is the receiving side, 4.5... Subscriber line exchange, 6... General subscriber line, 7... DID line, 8... Trunk line, 9... Terminal equipment, 10...DID line interface circuit, 1
1... Extension terminal interface circuit, 12... Call path switch, 13... CPU, 14... Extension terminal (telephone, personal computer, etc.), 15... Extension.

Claims (1)

[Claims] (1) A telephone line for a continuous dial dial-in service that assigns a public network telephone number to each extension of a private branch exchange or key telephone, etc., and sends the lower several digits of the telephone number as a designated extension number when a call is received; A terminal equipment that accommodates an extension terminal is connected, and a plurality of dial-in telephone numbers, which serve as incoming telephone numbers to the terminal equipment, are associated one-to-one with the calling party. This method of identifying a party when receiving a call is characterized in that an incoming extension designated number is notified to the extension terminal as is as information for identifying the calling party, or after being converted to information convenient for the extension terminal.