JPH0340633A - Terminal adaptor - Google Patents

Abstract

PURPOSE:To attain a highly efficient communication with a low communication charge by selecting either line exchange communication or packet switching communication depending whether dial information coincident with sent dial information is detected from dial information of a prescribed terminal equipment registered in advance. CONSTITUTION:An opposite dial number for low density communication and a remote distant opposite dial number are registered in a dial number memory 19 in advance in the steady-state. A caller dial number is inputted from a CODEC 3 to a dial number collation section 20 and whether or not a dial number coincident with the caller dial number is registered in the dial number memory 19 is detected, and the result is informed to a control section 1. When the dial number coincident with the caller dial number is detected, after a changeover switch 9a is selected and the succeeding processing is transferred. Moreover, when the dial number coincident with the caller dial number is not detected, the processing is transited as it is without changeover to the changeover switch 9a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a terminal adapter for connecting a terminal device that is not compatible with a digital network such as I5DN to a digital network.

(Prior Art) ISDN allows for circuit-switched communication and packet-switched communication, and some terminal adapters can selectively use circuit-switched communication and packet-switched communication. Here, packet-switched communication is suitable for low-density data communication (for example, data communication in sales flower truck management business or information search business) and long-distance communication.
It is desirable to use packet-switched communications for low-density or long-distance communications.

However, with conventional terminal adapters, the selection of circuit-switched communication and packet-switched communication is made by the operator, so circuit-switched communication is used even though it is low-density communication or long-distance communication, or high-density communication Packet switching communication is sometimes used even though it is high-density communication or short-distance communication, resulting in a decrease in communication efficiency and an increase in communication charges.

(Problems to be Solved by the Invention) As described above, in conventional terminal adapters, the selection of circuit-switched communication and packet-switched communication is made by the operator, so that circuit-switched communication or packet-switched communication cannot be appropriately selected. First, there was a problem that communication efficiency was inadvertently lowered and communication charges increased.

The present invention has been made in consideration of these circumstances, and its purpose is to appropriately select circuit switching communication or packet switching communication to perform communication with high efficiency and low communication charges. Our goal is to provide terminal adapters.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides dial information storage means such as a memory for storing dial information registered in advance, and dial information storage means such as a memory that stores dial information registered in advance, dial information detection means for detecting dial information matching the dial information from the dial information storage means, and the communication mode selection means selects either circuit switching communication or packet switching communication according to the detection result of the dial information detection means. I made it possible to select.

(Function) By taking such measures, when a call is made, the dial information that matches the dial information sent from the connected terminal device is transferred to the predetermined terminal device registered in advance in the dial information storage means. Either circuit-switched communication or packet-switched communication is selected depending on whether dial information that matches the dial information detected and transmitted is detected from among the dial information.

Therefore, by pre-registering dial information for terminal devices that regularly perform low-density communication or terminal devices that are installed far away in the dial information storage means, circuit-switched communication or packet-switched communication can be performed at the time of a call. It will be selected automatically and appropriately.

(Embodiment) Hereinafter, a terminal adapter according to an embodiment of the present invention will be described with reference to the drawings. Note that here, I5DN is used as the digital communication network.

FIG. 1 is a block diagram showing the configuration of the terminal adapter. In the figure, reference numeral 1 denotes a control unit that generally controls this terminal adapter. This control unit 1 is connected to a codec 3. Packet part 4. V, 110
Conversion unit 5. Packet unit 6, V, 110 conversion unit 7. A packet unit 8 is connected.

The codec 3 is connected to an analog interface section (hereinafter referred to as an analog signal section) 10 via a changeover switch 9a in a changeover switch group 9, and is connected to an analog telephone or G3 connected to an analog terminal terminal 11.
Analog terminal equipment such as facsimile machines (not shown)
For example, the analog signal outputted from the analog IF section 10 and the changeover switch 9a is
z.

Convert to digital signal with g bits. Also, like the codec 3, the packet section 4 is connected to the analog IF section 10 via the changeover switch 9a, and the analog terminal bag rI! (not shown), analog IF section 1
Predetermined packet pre-processing is performed on the analog signal inputted through 0 and the changeover switch 9a. Here, the codec 3 and the packet section 4 are connected to the changeover switch 9a.
It is designed to be selectively connected to the analog IF section 10. Note that the changeover switch 9a normally selects the codec 3 as shown in the figure.

The V, 110 converter 5 connects the data terminal terminal 12 (for example, R5
-232C interface), and converts data output from a V series terminal (not shown) connected to this data terminal terminal 12 into a data format compatible with I5DN.

In addition, the packet section 6 is connected to the data terminal terminal 12 via the changeover switch 9a, similar to the V, 11O conversion section 5, and is connected to the data terminal terminal 12 via the changeover switch 9a, so that the packet section 6 is connected to the data terminal terminal 12 via the changeover switch 9a. Apply processing. Here V, 1
10 conversion section 5 and bucket section 6 are connected to changeover switch 9
b is selectively connected to the data terminal terminal 12.

Note that the changeover switch 9b normally selects the V, LlO converter 5 as shown in the figure.

The V, 110 converter 7 connects the data terminal terminal 13 (for example, R5
-232C interface), and converts data output from a V series terminal (not shown) connected to this data terminal terminal 13 into a data format compatible with I5DN.

In addition, the packet section 8 is connected to the data terminal terminal 13 via the changeover switch 9c like the V, 11O conversion section 7, and is connected to the data terminal terminal 13 via the changeover switch 9c. Apply processing. Here v, i
The io converter 7 and the packet unit 8 are connected to a changeover switch 9
C selectively connects to the data terminal terminal 13.

Note that the changeover switch 9C normally selects the V, 110 converter 7 as shown in the figure.

Codec 3. V, 110 conversion unit 5. V,ll
Each output of the O conversion section 7 is connected to the B channel switching section 1.
4 will be done manually. The B channel switching section 14 is connected to the control section 1
An analog terminal device (not shown) connected to the analog terminal terminal 11 and a data terminal terminal 12 by selecting two of the three human powers according to control from the
．． Two B channels are respectively assigned to any two of the V series terminals (not shown) connected to the terminals 13 and 13, respectively.

The output of the B channel switching unit 14 is input to the l5DN interface unit (hereinafter referred to as l5DN-IF unit) 15, and the protocol is converted by this l5DN-IF unit 15.
The data is sent to the 5DN line 16.

Furthermore, the output of the packet unit 4.5.8 is transmitted via the data bus 2 to a packet interface unit (hereinafter referred to as the packet IF unit) 15 provided in the 15DN-IF unit 15.
a), protocol conversion and packetization are performed in the IF section 15a, and the 15DN line 1
6.

On the other hand, the data transmitted via the l5DN line 16 is
During circuit switched communication, it is received by the l5DN-IF unit 15,
After the protocol conversion is performed, the B channel switching unit 1
4 will be done manually. The B channel switching unit 14 converts the input data into the codec 3.0 to send the data to the terminal device to which the B channel is assigned during the communication. V
, 110 conversion unit 5, V, 110 is given to the conversion unit 7.

Here, the codec 3 also has a function of converting the data given from the B channel switching section 14 into an analog signal, and the signal obtained by analog conversion is passed through the changeover switch 9a and the analog IF section 10. to an analog terminal device (not shown) connected to analog terminal terminal 11;

In addition, the V,110 conversion units 5 and 7 are the B channel switching unit 1.
It also has a function to convert the data given from 4 to a data format compatible with the V series terminal, and the data converted to the data format compatible with the V series terminal is transferred to the data terminal via changeover switches 9b and 9C. Terminal 12.1
3 to V series terminals (not shown) connected to the V series terminals (not shown).

Further, data transmitted via the 15DN line 16 during packet switching communication is received by the I5DN-IF unit 15, and the packet is disassembled by the packet IF unit 15a and sent to the packet unit 4 to be sent to the destination terminal device. ,6.8
given to either.

Here, the bucket units 4, 6.8 also have a function of performing packet post-processing, and transfer the post-packet-processed data to the analog terminal device connected to the analog terminal terminal 11 and the data terminal terminal 12, 13. to each V series terminal connected to the .

The above configuration enables communication using the I5DN of analog terminal devices and V series terminals that are not compatible with the I5DN.

Further connected to the data bus 2 are a display section 17, a human power section 18, one dial number memory, and a dial number verification section 20. Among these, the display section 17 displays various information such as the caller number, call charges, and the status of each channel. The input unit 18 also allows the operator to
This is for inputting various instructions to the computer.

The dial number memory 19 stores a dial number (ISDN number) as dial information registered by inputting an instruction from the input unit 18, for example, and functions as a dial information storage means. The dial number verification means 20 connects the analog terminal terminal 11 to the analog terminal terminal 11 when making a call.
A dialed number output from either an analog terminal device (not shown) connected to the data terminal terminal 12.13 or a V series terminal (not shown) connected to the data terminal terminal 12.13 (hereinafter referred to as the calling dialed number) Codec 3 and V
. 110 conversion units 5 and 7 and collates the calling dial number with the dial number stored in the dial number memory 19, the same dial number as the calling dial number is registered in the dial number memory 19. This function detects whether or not the dial information is present, and functions as a dial information detection means. Note that the dial number verification by the dial number verification section 20 may be performed over all digits of the dial number, or a match between a part of the dial numbers may be considered as a match. The detection result is then given to the control unit 1 via the data bus 2.

By the way, the control section 1 has, for example, a microcomputer as a main control circuit, and in addition to the well-known general control means as a terminal adapter, it also has a changeover switch according to the information of the detection result given from the dial number verification section 20. A selection control means 1a is provided as a communication mode selection means for selecting circuit switching communication or packet switching communication by switching 9a9b and 9c.

Next, the selection operation of circuit switching communication/packet switching communication of the terminal adapter configured as above will be explained. Here, the operation when a call is made from an analog terminal device connected to the analog terminal terminal 11 will be explained as an example.

First, in the dial number memory 19, the dial number of the other party with whom low-density communication is to be performed at a constant W and the dial number of the long-distance partner are registered in advance.

Here, when the analog terminal rIt (not shown) connected to the analog terminal terminal 11 sends a dial number to make a call, the sent calling dial number is sent to the analog IF section 10. Changeover switch 9a, codec 3.
The signal is applied to the I5DN-IF section 15 via the B channel switching section 14. Then, the dial number is sent from this 15DN-IF section 15 to the 15DN network, and a calling operation is performed. At this time, the calling dial number is also input from the codec 3 to the dial number verification section 20.

The dial number verification unit 20 detects whether a dial number matching the calling dial number is registered in the dial number memory 19 and notifies the control unit 1 of the detection result. That is, since the dial number memory 19 stores the dial number of the other party with whom you regularly perform low-density communication and the dial number of a long-distance party, it is possible for the other party of the call to regularly perform low-density communication. A judgment will be made as to who the person will be communicating with and whether or not the person is a long-distance person.

In response to the notification from the dial number matching section 20, the control section 1 selects circuit switching communication or packet switching communication through the following process. That is, as shown in FIG. 2, first, in step a, the information (judgment data) of the determination result in the dial number matching section 20 is input manually, and then in step b, the calling dial is determined based on the determination data input in step a. It is determined whether a dial number matching the number has been detected.

Here, if a dial number matching the calling dial number is detected, the control section 1 switches the changeover switch 9a in step C, and then proceeds to the next process. Further, if a dial number matching the calling dial number is not detected, the process directly proceeds to the next process without switching the changeover switch 9a.

From this point on, the communication operation is performed according to the well-known procedure similar to the conventional one.

In this way, in this embodiment, the dial number of the other party with whom regular low-density communication is performed and the dial number of the distant party are registered in advance, and when a call is made, the dial number that matches the calling dial number is registered. If a dial number that matches the calling dial number is registered, the changeover switch corresponding to the terminal that made the call is switched to select packet switching communication. Therefore, when communicating with a partner with whom regular low-density communication is performed or with a long-distance partner, packet switching communication is used without the operator having to perform any instruction operation, and efficient communication is performed.

Note that the present invention is not limited to the above embodiments. For example, in the above embodiment, a dial number (ISDN number) is used as the dialing information, but instead of registering the dial number of a long-distance destination, a domestic destination number (NDC) is registered, and the long-distance/short-distance number is determined by matching the NDC. Distance may also be determined.

According to this, by registering one NDC, all the terminals within the area to which that NDC is assigned are registered, so many terminals can be easily registered.

Further, in the above embodiment, l5DN is used as the digital network, but other digital networks other than l5DN may be used. In addition, packet switching communication is assumed to be selected when it is detected that a dial number that matches the calling dial number is registered, but conversely, when a dial number that matches the calling dial number is registered, The circuit switching communication may be selected when it is detected that the Furthermore, packet communication may use either B channel packets or D channel packets. In addition, various modifications can be made without departing from the gist of the present invention.

[Effects of the Invention] According to the present invention, dial information storage means such as a memory stores dial information registered in advance, and dial information that matches dial information sent from a connected terminal device when making a call. dial information detection means for detecting from the dial information storage means, and the communication mode selection means selects either circuit switching communication or packet switching communication according to the detection result of the dial information detection means. This is a terminal adapter that can appropriately select circuit-switched communication or packet-switched communication and perform communication with high efficiency and low communication charges.

[Brief explanation of drawings]

1 and 2 are diagrams for explaining a terminal adapter according to an embodiment of the present invention. FIG. 1 is a block diagram showing the tank bottom of the terminal adapter, and FIG. 2 is a control diagram of the terminal adapter in FIG. 1. 2 is a flowchart showing a control procedure for selecting circuit switching communication/packet switching communication in part 1; l...control unit, 1a...selection control means, 9...changeover switch group, 9a, 9b, 9c...changeover switch, one...dial number memory, 20...dial number verification Department.

Claims (1)

[Scope of Claims] A terminal adapter capable of selectively using circuit-switched communication and packet-switched communication, comprising dial information storage means for storing dial information registered in advance; dial information detection means for detecting dial information matching the transmitted dial information from the dial information storage means; and communication for selecting either circuit switching communication or packet switching communication according to the detection result of the dial information detection means. A terminal adapter characterized by comprising a form selection means.