JPH10145499A - Communication control method for isdn and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the communication control method for an ISDN and its device by using the service served through the ISDN with a simple dialing. SOLUTION: In the case of registering a connection number, after the user hooks off, the user makes hooking to dial the connection number. A control circuit 12 receives a detection result of hookoff and hooking operation from an interface circuit 19 and receives the connection number from a pushbutton(PB) receiver 17, and stores this number to a memory 13. In the case of making connection to an opposite terminal equipment, the user dials a destination telephone number after hooking off. When receiving a telephone number from the PB receiver after hooking off, the control circuit 12 stores this number to the memory 13. Then the control circuit 12 controls a switch 15 to connect a PB sender 16 to a CODEC 14. Furthermore, the control circuit 12 reads a connection number and a telephone number from the memory 13 in this order and sends them to the PB sender 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an ISDN communication processing apparatus and method for using ISDN (Integrated Services Digital Network) to use various services.

[0002]

2. Description of the Related Art ISDN is a communication network constructed for transmitting voice, digital information, and the like. Digital terminals can be connected to ISDN, but a technology for connecting an analog telephone terminal to ISDN is disclosed in Japanese Unexamined Patent Publication No. Hei 1-1.
No. 28,694.

[0003] Some ISDN users use a facsimile as an analog telephone terminal and also use a facsimile communication network (F network) service. The facsimile communication network service has a function of automatically receiving a message or an image without ringing the facsimile of the called party. When a user uses this facsimile communication network service using ISDN, high-speed data transmission becomes possible and various services can be received.

[0004]

When a facsimile communication network service is used, a user dials a special number for connecting a facsimile to the facsimile communication network. When the connection with the facsimile network ends,
The user dials the telephone number of the called party.

As described above, when using the facsimile communication network service, it is necessary to dial the special number and the telephone number of the called party, and a cumbersome dial operation is required.
Further, if such a dial operation is performed twice, the telephone number may be dialed erroneously.

An object of the present invention is to provide a communication control method and apparatus for ISDN which eliminates such drawbacks and enables services provided by ISDN to be used with a simple dial operation.

[0007]

In order to achieve the object, an invention according to claim 1 comprises an exchange unit for transmitting and receiving signals to and from an analog telephone terminal and detecting off-hook and hooking operations of the analog telephone terminal; A line interface for transmitting and receiving signals to and from a digital line for communication;
Upon receiving the push button sound signal of the analog telephone terminal from the exchange unit, the signal processing unit converts the signal into character information, converts the input character information into a push button sound signal, and sends the signal to the line interface unit. After receiving a signal indicating the detection of a hooking operation following the off-hook of the analog telephone terminal from the exchange unit, and receiving character information from the analog telephone terminal from the signal processing unit, the character information is Is the number shown, ISDN
Holding the connection number for using the service provided by the storage unit, receiving a signal indicating the detection of the off-hook of the analog telephone terminal from the exchange unit, and then receiving the character information from the analog telephone terminal from the signal processing unit. And the telephone number of the destination indicated by the character information is stored in the storage unit, and thereafter, the connection number stored in the storage unit is read, and the character information indicating the connection number is sent to the signal processing unit. Thereafter, a control unit is provided for reading out the telephone number stored in the storage unit and transmitting character information indicating the telephone number to the signal processing unit.

According to the first aspect of the present invention, when registering a connection number, the user goes off-hook on the analog telephone terminal, performs a hooking operation, and then dials the connection number. The exchange unit detects off-hook and hooking operations, sends a detection result to the control unit, and the signal processing unit converts the push button sound signal into character information. After receiving a signal indicating the detection of the hooking operation following the off-hook of the analog telephone terminal from the switching unit, the control unit receives the character information from the analog telephone terminal from the signal processing unit, and sets the connection number indicated by the character information It is stored in the storage unit.

Next, when transmitting / receiving a signal to / from the destination terminal, the user goes off-hook on the analog telephone terminal,
Dial the destination phone number. The exchange unit detects the off-hook, sends a detection result to the control unit, and the signal processing unit converts the push button sound signal into character information. The control unit, after receiving a signal indicating the detection of off-hook of the analog telephone terminal from the switching unit and receiving character information from the analog telephone terminal from the signal processing unit, stores the destination telephone number indicated by the character information. Hold in the part.

When the holding of the telephone number is completed, the control unit
The connection number stored in the storage unit is read, and character information indicating the connection number is sent to the signal processing unit. The signal processing unit performs transmission processing based on the character information in accordance with the communication procedure of the ISDN communication protocol. This makes the services provided by ISDN available.

Thereafter, the telephone number stored in the storage unit is read, and character information indicating the telephone number is sent to the signal processing unit. The signal processing unit converts the character information into a push button sound signal and sends it to the line interface unit.
The line interface transmits this push button sound signal to the digital line. Thus, it becomes possible to call the destination terminal and transmit / receive a signal to / from the destination terminal using the service provided by the ISDN.

According to a second aspect of the present invention, when a push button sound signal is received from an analog telephone terminal after detecting a hooking operation following an off-hook operation of the analog telephone terminal,
This number is a number corresponding to this signal, and stores a connection number for using a service provided by ISDN. When an off-hook of the analog telephone terminal is detected and a push button sound signal is received from the analog telephone terminal, this signal is transmitted. Is stored, and when the telephone number is stored, the previously stored connection number is read out, an ISDN transmission procedure is performed based on this connection number, and when the connection is completed, Then, the stored telephone number is read and a push button sound signal corresponding to the telephone number is transmitted to the ISDN digital line.

[0013]

Next, an embodiment of the present invention will be described.
This will be described with reference to the drawings. In this embodiment, the present invention is applied to the private branch exchange shown in FIG. This private branch exchange includes a main device 1 and modular jacks 2 to 4.

The modular jack 2 of the private branch exchange has I
An SDN terminal 2A and an analog terminal 2B are provided. IS
For example, a computer 110 having a communication function can be connected to the DN terminal 2A, and a facsimile 1 as an analog telephone terminal can be connected to the analog terminal 2B.
20 are connectable. The facsimile 120 transmits a PB sound signal (push button signal) by dialing with the push button 121.

A modular jack 3 having ISDN terminals 3A and 4A and analog terminals 3B and 4B, respectively;
4 is the same as the modular jack 2.

The main unit 1 of the private branch exchange is connected to a digital line 100 for ISDN. In the main device 1, as shown in FIG. 2, a digital line 100 is connected to ISDN terminals 2A to 4A of modular jacks 2 to 4.

The main device 1 includes an interface circuit (IF
Circuit) 11, a control circuit 12 as a control unit, a memory 13, a codec 14, a switch 15, a PB sender 16, a PB receiver 17, a switching circuit 18, and interface circuits (IF circuits) 19 to 22 as storage units. In this embodiment, the line interface unit includes an interface circuit 11 and a codec 14, and the signal processing unit includes a switch 15, a PB sender 16, and a PB receiver 17. The switching unit includes a switching circuit 18 and interface circuits 19 to 21.

The interface circuit 11 is an interface for an ISDN line. The interface circuit 11 performs communication processing between the physical layer and the data link layer defined in the communication processing protocol. Through these communication processes, the interface circuit 11 connects the B channel (information channel) of the digital line 100 to the codec 14 and enables transmission of voice information and digital information. The interface circuit 11 connects the D channel (signal channel) of the digital line 100 to the control circuit 12, and enables transmission of a control signal such as a service request signal.

The codec 14 converts an analog signal such as a voice signal sent from the facsimile 120 or the like into a digital signal and sends the digital signal to the interface circuit 11. The codec 14 performs the reverse conversion.

The switch 15 switches connection to the codec 14 according to a switching signal from the control circuit 12. That is, when the switching signal indicates transmission of the PB sound signal, the switch 15 sets the PB sender 16 to the codec 14.
Connect to Also, when the switching signal indicates a line connection,
The switch 15 connects the switching circuit 18 to the codec 14.

Upon receiving the character information from the control circuit 12, the PB sender 16 generates a PB sound signal corresponding to the character information. The character information is information input by operating a push button of the facsimile 120 or the like, and indicates a number or the like corresponding to a PB sound. The PB sender 16 sends the generated PB sound signal to the switch 15.

The PB receiver 17 monitors the presence or absence of a PB sound signal sent from the switching circuit 18 to the switch 15. P
Upon detecting the PB sound signal, the B receiver 17 reads a number or code from the PB sound signal. And PB receiver 1
Numeral 7 sends character information indicating numbers and codes to the control circuit 12.

The switching circuit 18 makes the following connection according to a control signal from the control circuit 12. When the control signal indicates the connection between the extensions, the switching circuit 18 connects between the interface circuits. When the control signal indicates connection of an external line, the switching circuit 18 connects the interface circuit to the switch 15.

The interface circuit 19 is connected to the analog terminal 2B of the modular jack 2. The interface circuit 19 is controlled by the control circuit 12
It controls and monitors the status of the analog telephone terminal connected to the analog terminal 2B of the modular jack 2. In this embodiment, the facsimile 120 is connected to the analog terminal 2B.
, The interface circuit 19
It controls the facsimile 120 and monitors the status.

For this control and state monitoring, the interface circuit 19 is connected to the handset 122 of the facsimile 120.
Is detected, that is, when a DC loop formed by off-hook is detected, a detection signal is sent to the control circuit 1.
Send to 2. When detecting the hooking operation performed after the off-hook, the interface circuit 19 sends a detection signal to the control circuit 12. The hooking operation is an operation performed after picking up the handset 122, and is an operation of pressing down the hook switch in a short time.

In addition, the interface circuit 19
For example, upon receiving a ringing signal sent from the digital line 100 from the switching circuit 18, the ringing device sends a ringing tone signal to the facsimile 120.

The interface circuit 20 connected to the modular jack 3 and the interface circuit 21 connected to the modular jack 4 are the same as the interface circuit 19.

The memory 13 has a ROM (Read Only) inside.
Memory) and RAM (Random Access Memory).
The memory 13 stores the control procedure of the control circuit 12 in R
It is stored in the OM. As shown in FIG. 3, the memory 13 has a storage area 131A for the modular jack 2,
131B, storage area 132 for modular jack 3
A, 132B and storage areas 133A, 133B for the modular jack 4 are provided in the RAM.

The storage areas 131A to 133A store ISDN
Is for storing a special number (hereinafter referred to as a connection destination number) for using the service provided by
The storage areas 131 </ b> B to 133 </ b> B are for storing a telephone number of a called party (hereinafter, referred to as a called party number).

The control circuit 12 has a CPU (Central Processes).
sing unit) and controls the entire device. Further, the control circuit 12 performs communication processing of a network layer defined in the ISDN communication protocol. By this communication processing, the control circuit 12 controls the interface circuit 11 to make a connection with the partner terminal.

In addition to such normal processing, the control circuit 12 performs the following registration processing. The control circuit 12 outputs a detection signal indicating off-hook detection to the interface circuits 19 to
When the control signal is received from the switch 21, the control signal is sent to the switching circuit 18.
This control signal is for connecting the interface circuit that has output the detection signal to the switch 15.

After receiving the off-hook detection signal, the control circuit 12, upon receiving a detection signal indicating the detection of a hooking operation from the interface circuit that has output this signal, shifts to processing for registering a connection destination number. Thereafter, when the control circuit 12 receives the connection destination number from the PB receiver 17, it stores this number in the storage area 131 of the memory 13.
A to 133A.

For example, when the control circuit 12 receives the hooking operation detection signal from the interface circuit 19 of the modular jack 2 and thereafter receives the connection destination number sent from the facsimile 120 from the PB receiver 17, the connection destination The number is stored in the storage area 131A. In this embodiment, the modular jack 2
Is "1", and the extension number of the modular jack 3 is "2". The extension number of the modular jack 4 is "3".

The control circuit 12 stores the connection destination number in the memory 13
After receiving the detection signal indicating on-hook detection from the interface circuit that has output the off-hook detection signal, the registration process is terminated.

Further, the control circuit 12 performs the following transmission processing. After receiving the off-hook detection signal from the interface circuit and receiving the called party number from the PB receiver 17, the control circuit 12 checks the storage area of the memory 13. When the connection destination number is stored in the storage area, the control circuit 12 stores the called party number received from the PB receiver 17 in the storage amount areas 131B to 133B of the memory 13 corresponding to the interface circuit that detected the off-hook. In one of.

For example, when the control circuit 12 receives an off-hook detection signal from the interface circuit 19 of the modular jack 2 and thereafter receives the called party number transmitted from the facsimile 120 from the PB receiver 17, the control circuit 12 determines the called party number. It is stored in the storage area 131B.

When a predetermined time has elapsed after receiving the called party number, the control circuit 12 sends a switch signal to the switch 15. This switching signal is for connecting the PB sender 16 to the codec 14. Thereafter, the control circuit 1
Reference numeral 2 reads out the connection destination number from the connection destination number storage area corresponding to the extension number given to the interface circuit that has output the detection signal, and performs a calling operation based on the connection destination number.

When the connection with the facsimile network is completed, the control circuit 12 reads out the called party number from the called party number storage area corresponding to the extension number given to the interface circuit that has output the detection signal. Then, the control circuit 12 sends the character information indicating the called party number to the PB sender 16. When the PB sender 16 finishes transmitting the PB sound signal, the control circuit 12 switches the switching circuit 18 to the codec 1.
A switch signal for connecting to the switch 4 is sent to the switch 15. The control circuit 12 performs transmission processing in this manner. Thereafter, the control circuit 12 performs a normal communication process.

The control circuit 12 performs such control.

Next, the operation of this embodiment will be described.

The user can use, for example, the modular jack 2
When a facsimile communication network service is used using the facsimile 120 connected to the facsimile machine, a special number for connecting to the facsimile communication network is dialed. That is, the user picks up the handset 122 of the facsimile 120 and goes off-hook. When detecting the off-hook, the interface circuit 19 of the modular jack 2 sends a detection signal to the control circuit 12. When receiving the detection signal, the control circuit 12 sends the control signal to the switching circuit 18. With this control signal, the switching circuit 18 connects the interface circuit 19 to the PB receiver 17.

After off-hook, the user uses the hook switch of the facsimile machine 120 to perform a hooking operation. When detecting the hooking operation, the interface circuit 19 sends a detection signal to the control circuit 12. Control circuit 1
When receiving the hooking operation detection signal after receiving the off-hook detection signal, the process 2 proceeds to a process for registering a connection destination number.

After the hooking operation, the user operates the push button 121 of the facsimile 120 to dial a connection destination number for connecting to the facsimile communication network. The PB sound signal from the dial is applied to the PB receiver 17 via the interface circuit 19 and the exchange circuit 18. When detecting the PB sound signal, the PB receiver 17 reads out the connection destination number from the PB sound signal and sends character information indicating the connection destination number to the control circuit 12. When receiving the character information from the PB receiver 17, the control circuit 12 stores the connection destination number indicated by the character information in the storage area 131A of the memory 13.

Thus, the connection destination number is stored in the memory 13. This connection destination number is for the facsimile 120 with the extension number “1” to use the facsimile communication network service, and is registered with the facsimile 120.

After the operation of inputting the connection destination number, the user puts down the handset 122 of the facsimile machine 120 and ends the input of the connection destination number. When detecting the on-hook of the facsimile 120, the interface circuit 19 sends a detection signal to the control circuit 12. When receiving the detection signal, the control circuit 12 ends the registration processing.

Thereafter, when using the facsimile communication network service by the facsimile 120, the user goes off-hook of the facsimile 120. Thus, the interface circuit 19 is connected to the switch 15 and the PB receiver 17.

After off-hook, the user operates the push button 121 of the facsimile machine 120 to dial the called party number. The PB sound signal indicating the called number is transmitted to the PB via the interface circuit 19 and the exchange circuit 18.
It is sent to the B receiver 17. As a result, the PB receiver 17 sends character information indicating the called party number to the control circuit 12. The control circuit 12 converts the character information indicating the called party number into PB
When received from the receiver 17, the storage area 1 of the memory 13
Examine 31A. Since the connection destination number is stored in the storage area 131A, the control circuit 12 stores the called party number received from the PB receiver 17 in the storage area 13
1B.

When a predetermined time has elapsed after receiving the called party number, the control circuit 12 determines that dialing of the called party number has been completed, and the control circuit 12 reads out the connection destination number from the storage area 131A, and A calling operation is performed according to the character information indicating the connection destination number.

When the transmission operation is completed and the connection with the facsimile network is completed, the control circuit 12 reads out the called party number from the storage area 131B and sends character information indicating the called party number to the PB sender 16. . Upon receiving this information, the PB sender 16 generates a PB sound signal corresponding to the called party number and sends it to the switch 15. The PB sound signal is transmitted to the digital line 100 via the codec 14 and the interface circuit 11.

As described above, when using the facsimile communication network service provided by the ISDN, the user simply dials the called party number, which is the number of the called party, and the facsimile 120 on hand automatically connects to the facsimile communication network. Then, a call is made to the called party. As a result, the facsimile communication network service can be used with a simple dial operation.

Further, if the connection destination number is deleted from the memory 13, the use of the facsimile communication network service can be released. Further, it is possible to separately set or cancel the use of the facsimile communication network service for the extension numbers "2" and "3".

[0052]

As described above, according to the first and second aspects of the present invention, if a user registers a connection number,
Simply by dialing the telephone number of the destination, signals can be transmitted / received to / from the destination terminal using the service provided by ISDN. As a result, the service provided by the ISDN can be used by a simple dial operation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a state of connection to the private branch exchange in FIG. 1;

FIG. 3 is a diagram showing a storage area of a memory.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main apparatus 11 Interface circuit 12 Control circuit 13 Memory 14 Codec 15 Switch 16 PB sender 17 PB receiver 18 Exchange circuit 19-21 Interface circuit 2 Modular jack 2A Terminal for ISDN 2B Analog terminal

Claims (2)

[Claims] 1. An analog telephone terminal transmits and receives a signal.
A switching unit for detecting off-hook and hooking operations of an analog telephone terminal, a line interface unit for transmitting / receiving a signal to / from a digital line for ISDN, and a push button sound signal of the analog telephone terminal when the signal is received from the switching unit. Converts character information, converts the input character information into a push button sound signal, and sends it to the line interface unit, a readable and writable storage unit, and off-hook operation following analog telephone terminal off-hook After receiving the signal indicating the detection of from the exchange unit, and receiving the character information from the analog telephone terminal from the signal processing unit,
After storing the connection number for using the service provided by ISDN in the storage unit and receiving from the switching unit a signal indicating the detection of the off-hook of the analog telephone terminal, the analog telephone terminal When the character information is received from the signal processing unit, the destination telephone number indicated by the character information is stored in the storage unit, and thereafter, the connection number stored in the storage unit is read, and the connection number is read. And a control unit for transmitting the character information indicating the telephone number to the signal processing unit, reading the telephone number stored in the storage unit, and transmitting the character information indicating the telephone number to the signal processing unit.
Communication control device for DN. 2. When a push button sound signal is received from an analog telephone terminal after detecting a hooking operation following an off-hook operation of the analog telephone terminal, a number corresponding to this signal is used, and a service provided by ISDN is used. When a push-button sound signal is received from the analog telephone terminal after detecting the off-hook of the analog telephone terminal, the telephone number of the called party corresponding to this signal is stored, and the telephone number is stored. Is completed, the previously stored connection number is read out, an ISDN transmission procedure is performed based on this connection number, and when the connection is completed, the stored telephone number is read out and the corresponding telephone number is read. A push button sound signal is transmitted to an ISDN digital line,
Communication control method for DN.