JPH05207072A - Method and device for automatic call issuance - Google Patents

Abstract

PURPOSE:To improve the transmission efficiency of data by making connection from the terminal of a LAN to a public switching line automatic call issuance. CONSTITUTION:This method and device is equipped with an Ethernet interpreting part 7 which interprets a transmission destination MAC(Media Access Control) address from an Ethernet format received by a terminal interface part 10, a memory part 6 in which the data is sorted and stored at each classification of transmission MAC address by a control part 4, and a setting part 5 on which the correspondence of the telephone number of a terminal adaptor corresponding to the transmission destination MAC address is set, and a call control part 8 which performs the automatic call issuance by the telephone number of the terminal at a remote place retrieved from the transmission destination MAC address by the control of the control part 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic calling device,
Especially used when connecting a local area network (hereinafter referred to as LAN) and a wide area network service (hereinafter referred to as WAN) and connecting LANs via WAN (hereinafter referred to as LAN-WAN connection). , A device for making an automatic call as an additional function of a terminal adapter.

[0002]

2. Description of the Related Art Conventionally, in a calling process for realizing a LAN-WAN connection, a gateway device terminates a communication protocol in a LAN, converts the protocol into a serial transmission format used in a WAN, and then a terminal adapter. Was being used to access a leased line or a switched line manually called.

Generally, a physical layer is used as a LAN communication protocol and an Ethernet I is used as a data link layer.
EEE 802.3 is very widely used. Also, a protocol called "SLIP" is used as a protocol for converting into a format of serial transmission for accessing a WAN.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
When a switched line is used as a WAN in a calling device in an AN-WAN connection, a method is used in which a person dials a telephone number of a transmission destination and connects with a terminal of a remote party via a terminal adapter. Therefore, there is a drawback that it takes time and labor to connect the line. Also, L
Since data in the AN is packet data, there is always one destination medium access address (Media A
The data is not limited to the data for access control address (hereinafter referred to as MAC address), but in the network configuration that requires connection with a plurality of terminals at remote locations, the destination MAC corresponding to the terminal adapter
Since there are often a plurality of addresses, there is an inconvenience that it is necessary to consider such as limiting the destination MAC address for WAN connection on the gateway device side.

An object of the present invention is to provide an automatic call-out method and an apparatus thereof, in which the disadvantages of the conventional techniques are improved, and in particular, the data transmission efficiency is improved.

[0006]

An automatic calling method according to the present invention comprises a step of interpreting a frame input from a gateway device of a terminal of a local network and recognizing a destination address, and transmitting the frame by interpreting the frame. The method comprises the steps of sorting and storing by destination address unit, and searching the telephone number of the corresponding terminal by the transmission destination address recognized by the interpretation of the frame, and making an automatic call by the telephone number.

The automatic calling device of the present invention interprets a frame sent from a gateway device of a terminal of a local network, recognizes a destination address, and interprets the frame so that the frame is transmitted to the destination address unit. Means for sorting and storing into, destination address,
Means for setting a comparison table with the telephone number of the terminal corresponding to the destination address, and searching the telephone number of the terminal corresponding to the destination address from the comparison table by the destination address, and automatically using the telephone number It has a means to make a call.

In the automatic calling device of the present invention, the means for interpreting the input frame of the automatic calling device and recognizing the destination address interprets the destination medium access control address of the Ethernet frame. , And a means for recognizing the destination address, a means for sorting and storing the destination address, a means for setting a comparison between the destination address and a telephone number, and a means for automatically calling the terminal adapter. It also includes an integrated structure.

[0009]

Operation: Interpret the transmission destination address of the frame received from the gateway device, store the transmission data for each transmission destination address, retrieve the corresponding telephone number from the transmission destination address, and perform control to automatically dial the telephone number. Therefore, automatic call is possible.

[0010]

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

FIG. 1 is a block diagram of an embodiment of an automatic calling device to which the automatic calling method of the present invention is applied, and FIG. 2 is a functional block diagram of the control unit 4 shown in FIG.

The automatic calling device shown in FIG. 1 has a structure integrated with a conventional adapter. The function of the conventional terminal adapter is performed by the terminal interface unit 10, the modulation / demodulation unit 9, the line interface unit 11, the control unit 4 and the memory unit 6 that control these functions, and the automatic calling function is the Ethernet interpretation unit. 7, the setting unit 5 and the call control unit 8 perform control by the control unit 4 having expanded functions and the memory 6.

LAN in which this automatic calling device is used
Is an Ethernet, and description will be given assuming automatic connection from the one terminal to another terminal of the Ethernet through a public communication switching network.

The connection from one terminal of the Ethernet to the public switched communication network 3 is performed via the terminal adapter 1 after the protocol conversion is performed by the gateway device 2. The terminal interface unit 10 receives the Ethernet frame format data transmitted from the gateway device. The Ethernet interpretation unit 7 interprets the destination MAC address from the data received by the terminal interface unit 10. The setting unit 5 is a RAM in which an address map in which the destination MAC address “A” and the corresponding telephone number “X” are compared is set. Call controller 8
When the destination MAC address is interpreted and the corresponding telephone number is instructed, the dialing device (not shown) is controlled to the switching network 3 to make a call by the telephone number via the line interface unit 11. . The control unit 4 has a CPU 4 ₁
And ROM 4 ₂ and I / O 4 ₃ . ROM 4 ₂ is,
A program for calling the corresponding telephone number X from the address map of the setting unit 5 by using the destination MAC address A stored in the memory unit 6 as a key and showing the telephone number X to the call control unit 8 is stored. ing. The I / O unit 4 ₃ is an I / O unit with the call control unit 8 and is controlled by the CPU 4 ₁ . The control unit 4 stores the received data in the memory unit 6 as data in units of destination MAC address, searches for a corresponding telephone number based on the destination MAC address, and activates the call controller 8.
The data stored in the switched line connection total memory unit 6 is transmitted via the modulation / demodulation unit 9.

A method of automatically connecting a line to a terminal adapter at a remote location in units of destination MAC addresses of Ethernet frame data received from the gateway device 2 will be described.

FIG. 3 is a flowchart of the operation of the automatic calling device shown in FIG.

First, the Ethernet frame data for transmission received from the gateway device 2 through the terminal interface unit 10 of the terminal adapter 1 is stored in the memory unit 6. The Ethernet interpretation unit 7 detects the destination MAC address field A of the Ethernet frame from the received data stored in the memory unit 6 (step 21), notifies the destination MAC address to the control unit 4, and the control unit 4 sends the Ethernet frame data. Is sorted as data of the destination MAC address and stored in the memory unit 6. The control unit 4 uses the memory unit 6 and the information of the setting unit 5 in which the comparison of the telephone number of the terminal corresponding to the destination MAC address is set.
The telephone number X to be called is determined from the destination MAC address stored in (steps 22 and 23), and the call control unit 8
Is activated and the switching network 3 is accessed through the line interface unit 11 to connect to the terminal adapter at a remote place (step 25). When the line connection is completed, the control unit 4 stores the destination MAC stored in the memory unit 6.
The data addressed to the address is transmitted to the terminal adapter at the remote place through the modulator / demodulator 9 (step 26).

When the telephone number is not detected by the setting unit 5, the contrast is newly added to the address map (step 27). Further, when the connection to the telephone number X is unsuccessful, the failure processing is performed after repeating a predetermined number of times (step 28).

By the above method, the destination MAC of the Ethernet frame data received from the gateway device 2
Lines can be automatically connected to terminal adapters at remote locations by address.

[0020]

As described above, according to the present invention, in LAN-WAN connection, when a switched line is used as a WAN, it is not necessary for a person to operate a terminal adapter, so that efficient data transmission is possible. In addition, there is an effect that it is not necessary to control the destination MAC address for the gateway device.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an automatic calling device to which an automatic calling method of the present invention is applied.

FIG. 2 is a functional block diagram of a control unit 4 shown in FIG.

FIG. 3 is a flowchart of the automatic calling device shown in FIG.

[Explanation of symbols]

1 Terminal Adapter 2 Gateway Device 3 Switching Network 4 Control Section 5 Setting Section 6 Memory Section 7 Ethernet Interpretation Section 8 Call Control Section 9 Modulation / Demodulation Section 10 Terminal Interface Section 11 Line Interface Section 4 ₁ CPU 4 ₂ ROM 4 ₃ I / O

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04M 11/00 303 8627-5K

Claims (4)

[Claims] 1. A method of interpreting a destination address from frame data input from a gateway device of a terminal of a local network; a step of storing the frame data sorted by destination address; An automatic calling method comprising a step of retrieving a telephone number of a terminal to be called and automatically calling by the telephone number. 2. A means for interpreting a destination address from frame data input from a gateway device of a terminal of a local network, a means for storing the frame data sorted by destination address, and a means for storing the destination address. An automatic calling device having means for setting a comparison table with a telephone number of a terminal, and means for searching a telephone number of a corresponding terminal from the comparison table by a destination address and automatically making a call by the telephone number. 3. The automatic calling device according to claim 2, wherein the means for interpreting the input frame and recognizing the destination address interprets the destination medium access control address of the Ethernet frame. 4. A means for recognizing the destination address,
The means for storing destination addresses in a sorted manner, the means for setting a comparison between the destination addresses and the telephone number, and the means for automatically making a call are integrated into a terminal adapter. The automatic calling device described in.