JPH01208065A - Method for identifying and connecting caller at time of incoming call - Google Patents

Abstract

PURPOSE:To perform the automatic call of an extension corresponding to an incoming call by referring to a memory in which the extension corresponds to an external caller number, analyzing the caller number by a key telephone main body, and connecting the extension selectively. CONSTITUTION:When the caller number or the station number of a call originating telephone set P, etc., is sent from a digital station exchange 2, the controller 5 of the key telephone 1 performs analysis by referring to the memory 6 storing the correspondence of the extension with the caller number or the station number, and decides a corresponding extension A, etc. And the extension A, etc., is connected selectively, and the automatic connection to the extension corresponding to the incoming call can be performed.

Description

[Detailed Description of the Invention] [Summary] Regarding a connection method for identifying a caller at the time of an incoming call in a key telephone connected to a switching system in which the caller number is notified at the time of an incoming call, the caller number sent from a digital switching network is disclosed. The purpose of this system is to analyze the information on the key telephone itself and selectively connect it to a specified extension. A control device that controls the subscriber interface and the digital switch, and a storage device that is connected to the control device and stores the extension number, external number, caller number at the time of incoming call, etc. The data that matches the caller number and the extension number, or the data that matches the extension number and the station number included in the caller number, is registered in advance in the storage device, and the caller number is received at the subscriber interface when a call is received. Then, the control device performs analysis and comparison with the registered data, and is configured to call and connect the telephone with the corresponding extension number according to the registered data.

[Industrial application field]

The present invention relates to a caller identification and connection method when a call arrives in a key telephone connected to a switching system in which the caller number is notified at the time of the call.

In recent years, with the advancement of l5DN technology, subscriber lines and exchange networks have been digitized, and with this, telephone terminals and key telephones connected to subscriber lines have also been digitized, providing services other than basic telephone services. It has become possible to receive various additional services through networks.

Traditionally, telephone public network subscriber systems used analog transmission;
Although the caller's number was not notified when a call was received, it is now possible to provide a service in which the caller's number is notified to the called party using l5DN exchange technology.

For key telephones, for example, it has become possible to provide a call receiving service in which an extension (person in charge) is assigned to deal with business partners and that extension is automatically called when a call is received.

[Conventional technology]

FIG. 4(a) shows a configuration diagram of a key telephone connected to a subscriber line (office line) of a conventional analog switching network. In the figure, 11 is a key telephone, 12 is an analog exchange, and 13
is a subscriber interface, 14 is an analog central office switch, 1
5 is a control unit, and 16 is a memory.

The extension telephone is an analog telephone, but if a digital telephone is used, it is also possible to time-division multiplex the call line and control line.

FIG. 4(b) shows a schematic diagram of the subscriber interface.

In the figure, 17 is a loop holding circuit (LPH), 18 is a ringer detection circuit (R3D), and 19 is a hybrid circuit (HYB).

FIG. 4(C) shows an overview of the external line/extension correspondence table in the memory, where numbers 123-1111 indicate the subscriber number (external line number) of external line #1, and number 10 is the extension number that rings when external line #1 receives a call. shows.

The conventional key telephone incoming call service will be explained with reference to the sequence diagram shown in FIG.

Telephone terminal P (number 123-2222) accommodated by central office exchange
From the key telephone outside line 11 (numbers 123-1111)
), a ringer (calling) signal is sent from the central office exchange 12 to the outside line 111.The ringer detection circuit 18 of the subscriber interface 13 of the outside line #l detects the incoming signal, and the control Analyze the incoming call at 15 and write memo I.
Refer to the J16 external line/extension correspondence table and set the external line Ill.
reads the extension number 10 of extension #1 corresponding to the subscriber number (external number 123-1111), sends an extension control signal to internal vAl11, sends an incoming ringing signal and incoming lamp information to telephone A, and The external line number 123-1111, which received the call, is displayed on the display as the incoming call information, instead of the other party's number. At the same time, only the incoming lamp information is sent to the other extension #2. When the telephone of the extension Ill answers, the control device holds the response using the loop holding circuit of the incoming external line '#1, connects the extension I11 and the external line #1 via a switch, and makes a call.

[Problem that the invention seeks to solve]

Therefore, with key telephones connected to subscriber lines (external lines) of conventional analog switching networks, it was possible to connect the incoming central office line to a preset specific extension line as an incoming call service, but it was not possible to It was impossible to identify the caller's number and connect an extension corresponding to the caller's number.

An object of the present invention is to selectively connect to a specific extension by analyzing the caller number sent from the digital switching network using the key telephone itself.

[Means for solving problems]

A diagram of the principle of the present invention is shown in FIG. In the figure, 1 is a key telephone body, 2 is a digital exchange, 3 is a subscriber interface, 4 is a digital switch, 5 is a control device, and 6 is a writing device.

The digital subscriber line that connects the digital central office exchange and the key telephone itself uses time-division multiplexing technology to transmit a communication channel (B) and a control channel (D) in both directions, and the communication information and control information are transmitted in a bucket format. is used to provide various services to subscribers.

[Effect]

As a connection method for caller identification when receiving a call, register to connect to extension A when receiving a call from calling phone P and to extension B when receiving a call from calling phone IQ, and connect to the digital station when receiving a call from calling phone P. The subscriber number of the calling telephone P is transmitted from the exchange 2 to the key telephone body 1 via the control channel of the digital subscription line. The key telephone body 1 compares the subscriber number sent as a control signal with the registration data stored in the storage device 6 and determines whether it is compatible or not.
9 A can be called.

Note that by specifying only the area code, for example, a district (03 or 044) or a 10-city area code, instead of the destination number, as the stored data, it is also possible to associate extensions in units of calling districts.

〔Example〕

FIG. 2(a) shows a configuration diagram of an embodiment of the present invention.

In the figure, 1 is a key telephone body, 2 is a digital central office exchange, 3 is a subscriber interface, 4 is a digital switch, 5 is a control device, and 6 is a memory.
) shows a schematic diagram of the subscriber interface. In the figure, 7 indicates a line interface circuit LIU, and 8 indicates a y1 termination circuit.

FIG. 2(c) is a schematic diagram of the memory circuit and shows an outside line/extension line correspondence table. Numbers 123-2222 indicate the calling number included in the D channel of the incoming outside line, and number 1
0 indicates the extension number corresponding to the caller number.

The incoming call service in the digital switching network will be explained with reference to the sequence diagram in FIG. Communication information (B channel) and control information (D channel) are time-division multiplexed and transmitted and received over the digital subscriber line. External line #1 (number 12) from telephone terminal P (number 123-2222) accommodated by the central exchange
3-1111), the subscriber interface 3 receives control information (D channel) including the caller number, the control device 5 analyzes the call, and the caller number in the outside line #1 call information is received. is read, the extension number 10 corresponding to the caller number 123-2222 registered in advance in the memory table in the memory 6 is determined, and the telephone A of extension #1 is made to ring.

At this time, the extension control signal sends incoming ringing information, lamp information, and display information of caller number 123-2222 to extension #2, and sends only lamp information to extension #2. When telephone A of extension 11 answers, the control unit notifies the exchange via the D channel of coded response information corresponding to the incoming external line #1.

The B channel of extension #1 and outside line #1 are connected via a switch, and a call is made.

〔Effect of the invention〕

For key telephones with multiple extensions, by associating each extension with the outside caller's number in advance in memory, for example, by assigning an extension person to handle customer calls, the corresponding number will be automatically assigned when a call arrives. You can call an extension.

[Brief explanation of the drawing]

FIG. 1 is a diagram of the principle of the present invention, and FIGS. 2(a) and (b). (c) is a configuration diagram and a schematic diagram of an embodiment of the present invention, FIG. 3 is a sequence diagram of the embodiment, and FIG. 4(a). (b) and (c) show a configuration diagram and a schematic diagram of the conventional example, and FIG. 5 shows a sequence diagram of the conventional example. In the figure, ■ and 11 are key telephones, 2 and 12 are central exchanges, 3 and 13 are subscriber interfaces, 4 degrees and 14 are switches, 5 and 15 are control devices, 6 and 16 are storage devices, and 7 is a subscription device. 8 is a network termination circuit;
17 is a loop holding circuit, 18 is a ringer detection circuit, 19
indicates a hybrid circuit. - (5'. External line #1 from the terminal (123-2222) accommodated by the central office exchange
Figure 3: Sequence diagram of an example of incoming calls to (123-1111)

Claims (1)

[Scope of Claims] A key telephone connected to a switching system in which a caller number is notified upon receipt of a call, comprising: a subscriber interface (3) connected to a digital subscriber line; a digital switch (4); It consists of a control device (5) that controls a user interface (3) and a digital switch (4), and a storage device (6) connected to the control device (5), and does not correspond to an extension number and a caller number. data that matches the extension number and the station number included in the caller number is registered in advance in the storage device (6), and the caller number at the time of incoming call is received at the subscriber interface (3); A method for identifying and connecting a caller at the time of incoming call, characterized in that a control device (5) performs analysis and collation with registered data, and calls and connects a telephone with a corresponding extension number according to the registered data.