JPH09233148A - Terminal adaptor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal adaptor by which public/private connection between an integrated services digital network ISDN and a high speed digital HSD is attained with a simple configuration. SOLUTION: This adaptor 10A connects to the ISDN 31 or the HSD 32 and contains line exchange protocol for communication via a network make data communication by making the speed of the network and a terminal equipment in matching with each other. The interfacing of transmission reception data from the ISDN 31 and the HSD 32 and the speed matching between the network and the terminal equipment are conducted by line interface sections 12, 20 and speed matching sections 15, 18 provided respectively in the ISDN 31 and the HSD 32. Then transmission reception data from the ISDN 31 and the HSD 32 are looped back at the speed matching sections 15, 18 connected together with a central management section 14 and the ISDN 31 and the HSD 32 are public/private-connected while controlling data transmission reception and data are communicated between the ISDN 31 and the HSD 32, line is used efficiently.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to ISDN and HSD.
The present invention relates to a terminal adapter device that is connected to a network and absorbs a protocol on the network side and a protocol on the terminal side to perform data communication.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a configuration of a conventional terminal adapter device, in which a central management unit 14 for controlling the whole controls a layer 3 message M3 in ISDN communication to switch call origination and termination. A call control unit 11 for performing the above, a D channel control unit 13 for controlling the layer 2 of the call control channel D of ISDN, a B channel control unit 17 for controlling the separation and selection of the B channel, and a communication speed of the terminal and communication of the B channel. The speed matching unit 15 for matching the speed according to the V110 speed matching procedure is connected to the call control unit 11.
Is connected to the D channel control unit 13 via a data line 42, and the speed matching unit 15 is connected to the B channel control unit 17 via a data line 44.

Further, in the terminal adapter device 10,
The speed matching unit 15 is connected to a terminal interface unit 16 that performs an interface operation with a data terminal, and the data terminal 33 is connected to the terminal adapter device 10 via the terminal interface unit 16.

On the other hand, a line interface section 12 for controlling the connection of the ISDN 31 and the HSD 32 connected to the terminal adapter apparatus 10 and for dividing the D channel and the B channel is provided in the terminal adapter apparatus 10, and the line interface section 12 is provided. Are connected to the D channel control unit 13 by the data line 41 and connected to the B channel control unit by the data line 43. Then, the ISDN 31 or HSD 32 to which the partner terminal 34 is connected is connected to the terminal adapter device 10 via the line interface unit 12.

The operation of the conventional terminal adapter device having such a configuration will be described. When connecting to the ISDN31, the line interface unit 12
When 1 is connected, the line interface unit 12 divides the call control channel D and the information channel B, the D channel control unit 13 controls the data link layer, extracts the layer 3 message M3 from the information frame, and transmits / receives it. When the control is performed and the incoming message of the terminal adapter device 10 is received, the D channel control unit 13 causes the call control unit 1 to
A call setup message is input to 1.

[0006] The call control unit 11 controls the connection of the call or the disconnection of the call based on the instruction of the central management unit 14 in response to the input of the call setting message, and at the time of the connection control, the instruction from the central management unit 14 is issued. , B channel control unit 17 selects the information channel B, and supplies the data of channel B to the speed matching unit 15 via the data line 44.

Then, by the speed matching unit 15, V11
Based on the speed matching procedure of 0, the speed matching between the terminal and the ISDN 31 is performed, the speed matched data is transmitted to the terminal interface 16 to which the data terminal 33 is connected, and the data terminal 33 and the partner terminal 34 are connected to each other. In between, data communication using the B channel is performed.

On the other hand, in data communication via the HSD 32, the line interface section 12 causes the HSD
When 32 is connected, by the command of the central management unit 14,
The B channel control unit 17 selects the information channel B, and the data of the channel B is transferred to the speed matching unit 15 via the data line 44.
To supply.

Then, by the speed matching unit 15, V11
Based on the speed matching procedure of 0, the speed matching between the terminal and the HSD 32 is performed, the speed matched data is transmitted to the terminal interface 16 to which the data terminal 33 is connected, and the data terminal 33 and the partner terminal 34 communicate with each other. In between, data communication using the B channel is performed.

As described above, according to the conventional terminal adapter device 10, data communication is performed between the data terminal 33 and the partner terminal 34 via the ISDN 31 or the HSD 32.

[0011]

However, in the above-mentioned conventional terminal adapter device 10, the ISDN 31 and the HS are used.
There is a problem in that a public-private connection between D32s cannot be established and the line cannot be used efficiently.

The present invention has been made in view of the current state of the connection operation of the above-mentioned terminal adapter of this type,
It is an object of the present invention to provide a terminal adapter device capable of publicly exclusive connection between ISDN and HSD with a simple configuration.

[0013]

A terminal adapter device according to the present invention is an ISDN (Digital Integrated Communication Network) and H
A terminal adapter device that is connected to an SD (high-speed digital leased line network), accommodates a circuit switching procedure for performing communication through the network, performs speed matching of terminals, and performs data communication, the ISDN and the HSD. And a line matching means and a speed matching means provided respectively corresponding to the above, and a control means for returning the transmission / reception data from the ISDN or the HDS by the speed matching means to establish a public exclusive connection. It is a thing.

According to the present invention, a public-private connection between the ISDN and the HSD can be realized with a simple structure.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention accommodates a circuit switching procedure for connecting to an ISDN (digital integrated communication network) and an HSD (high-speed digital leased line network) and performing communication via the network.
A terminal adapter device that performs speed matching of a terminal and performs data communication. Line interface means and speed matching means provided corresponding to the ISDN and the HSD, respectively, and transmission / reception data from the ISDN or the HSD. , And a control means for folding back at the speed matching means to make a public connection.

In the present invention, the transmission / reception data from the ISDN or HSD is transmitted through the line interface means and the speed matching means provided respectively corresponding to the ISDN and the HSD, and the control means causes the speed matching means to use the speed matching means. It is returned and sent to the other terminal, ISDN and HSD
Data communication is performed by public-private connection between them.

An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a block diagram showing the configuration of the present embodiment, and the same parts as those in FIG. 2 already described are assigned the same reference numerals.

In this embodiment, as shown in FIG. 1, a speed matching unit 18, a B channel control unit 19, and a rotation interface unit 20 are added to the conventional terminal adapter device already described with reference to FIG. The HSD 32 is newly provided, and the HSD 32 is connected to the terminal adapter device 10A and the partner terminal 35 is connected to the HSD 32 via the line interface unit 20. In addition, in the terminal adapter device 10A, the rotation interface 20 uses the data line 4
8, the B channel control unit 19 is connected to the B channel control unit 19, the data line 47 is connected to the speed matching unit 18, and the speed matching unit 18 is connected to the terminal interface 16 by the data line 46. And the central management unit 14
Are connected to the B channel control unit 19 and the speed matching unit 18, and the speed matching unit 18 is connected to the speed matching unit 15 by a signal line 49.

The other parts of the configuration of the present embodiment are the same as those of the conventional terminal adapter described with reference to FIG.

The public-private connection operation of this embodiment having such a configuration will be described. When a call from HSD32 occurs, HS
The synchronization is established by the procedure of V110 with the partner terminal 35 via D32, and the SA bit and the SB bit in the frame of the procedure of V110 transmitted from the speed matching unit 18 to the partner terminal 35 are set to OFF. Where SA bit and SB
The bit is a bit for mapping the ER and RS signal lines of the V24 interface connected to the terminal adapter device 10A, and when ON, the partner terminal determines that data transmission is possible.

Next, a call setup message is sent to the ISDN 31 under the control of the call control unit 11 to the address registered in the terminal adapter device 10A.
When the response message from the partner terminal 34 is received in response to this call setting message, the speed matching unit 15 to the V110 procedure is applied to the information channel B selected by the B channel control unit 17 according to a command from the central management unit 14. Frame is supplied and the frame synchronization state is set. At this time, the speed matching unit 15 and the speed matching unit 18 are connected by the communication line 49, and the HSD 3 is connected via the speed matching units 15 and 18.
The second B channel and the ISDN 31 B channel are connected to each other.

After that, the frame is not monitored by the terminal adapter 10A, and the SA bit and the SB bit are turned ON / OFF according to the operation of the partner terminals 34 and 35, and the terminals 34 and 35 are publicly connected to each other to establish the terminal. 34, 3
Data communication is performed between the five.

On the other hand, when the call setup message is received from the ISDN 31, the B command is issued by the central management unit 14.
A frame of V110 procedure is supplied from the rate matching unit 18 to the B channel selected by the channel control unit 19, synchronization is set with the partner terminal 35, and in this state, the SA bit transmitted to the partner terminal 35. , SB bits are set to OFF.

In this state, the call control unit 11 sends data to the partner terminal 3
4, a response message is transmitted, and a frame is transmitted from the rate matching unit 15 to the B channel selected by the B channel control unit 17 in the procedure of V110.
Synchronization with the partner terminal 34 is established. Then, the communication line 49 connects the speed matching unit 15 and the speed matching unit 18, and the B channel of the HSD 32 and the B channel of the ISDN 31 are connected to each other via the speed matching units 15 and 18.

After that, the frame is not monitored by the terminal adapter 10A, and the SA bit and the SB bit are turned ON / OFF according to the operation of the partner terminals 34 and 35, and the terminals 34 and 35 are publicly connected, Terminal 34,
Data communication is performed between 35.

Incidentally, the data terminal 3 in the present embodiment
3 and data communication between the partner terminal 34 and the data terminal 33
Since the data communication between the data terminal 33 and the partner terminal 35 is similar to the data communication between the data terminal 33 and the partner terminal 34, which has already been described for the conventional terminal adapter 10, a duplicate description will not be given.

As described above, according to the present embodiment, the speed matching units 15 and 18 are connected to each other by the communication line 49 according to the command of the central management unit 14 during the public exclusive connection operation. By connecting the B channel of the HSD 32 and the B channel of the ISDN 31 to each other via 18, the terminals 34 and 35 are publicly and exclusively connected, and data communication is performed between the terminals 34 and 35 to establish a line. It becomes possible to use it efficiently.

[0028]

According to the present invention, the circuit switching procedure for connecting to the ISDN (Digital Integrated Communication Network) and the HSD (High Speed Digital Private Line Network) and communicating through the network is accommodated.
In a terminal adapter device that performs terminal speed matching and data communication, the interface operation of the transmission / reception data from the ISDN and HSD and the network by the line interface means and the speed matching means provided corresponding to ISDN and HSD, respectively. Since the speed matching operation between the ISDN and the terminal is performed, and the transmission / reception data from the ISDN and the HSD are returned by the speed matching means by the control means, the ISDN and the HSD are publicly connected while controlling the transmission / reception of the data, and the ISDN and the HDS are connected. It becomes possible to use the line efficiently by performing data communication between them.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a terminal adapter device of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional terminal adapter device.

[Explanation of symbols]

 10A Terminal adapter device 11 Call control unit 12, 20 Line interface unit 13, 17 B channel control unit 14 Central management unit 15, 18 Speed matching unit 16 Terminal interface unit 17, 19 B channel control unit 31 ISDN 32 HSD 33 Data terminal 34 , 35 partner terminal

Claims (1)

[Claims] 1. ISDN (Digital Integrated Communication Network) and HS
A terminal adapter device connected to a D (high-speed digital leased line network) and accommodating a circuit switching procedure for performing communication through the network, performing terminal speed matching and performing data communication, the ISDN and the HSD. Line interface means and speed matching means respectively provided corresponding to
The transmission / reception data from the ISDN or the HSD is
A terminal adapter device, comprising: a control unit that folds back at the speed matching unit to perform a public-private connection.