JPH06133015A - Digital telephone set - Google Patents

Abstract

PURPOSE:To control a call and to control the state of a telephone set from a terminal by controlling the telephone set, managing the call, controlling display and storing a terminal mode. CONSTITUTION:B and D channel data are multiplexed from an automatic private branch exchange and they are transmitted to a communication interface means 6. When a received frame is normal and an event is a terminal mode, a new terminal mode is set in a storage means 12. When the terminal mode is a regular mode, the means 6 transmits the received event to a telephone set control means 10. When the terminal mode is an application mode, it is transmitted to an application interface means 11. Similar control is executed at the time of receiving data from the terminal. When the terminal is at the application mode, information from an operation means 4 to the means 10 is transmitted to the means 11 from the means 10. The means 11 transfers the information to a terminal interface means 7, and outputs it to the terminal. The means 11 controls a display means 5 through the means 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital telephone having an RS-232C port connected to a private branch exchange through a digital transmission line.

[0002]

2. Description of the Related Art FIG. 3 shows a system configuration diagram of a conventional digital telephone. In FIG. 3, 31 is a handset for making a voice call, 32 and 33 are speakers and a microphone for making a hands-free voice call, 34 is an operating means including a dial button and a hook switch, and 35 is an LED (light emitting diode). ) Or LCD (liquid crystal display device). 3
6 is a communication interface means for controlling communication with a private automatic branch exchange, for example, a private automatic branch exchange is 2B + D, that is, two B channels having a transmission rate of 64 Kbps and 16
It is connected to one D channel having a transmission rate of Kbps, user information such as voice or data can be transmitted on the B channel, and events required for exchange processing are transmitted on the D channel. Reference numeral 37 is a terminal interface means for controlling data transmission / reception with a data terminal connected via the RS-232C input / output port, and 38 is a low speed transmission / reception with a terminal connected via the terminal interface means 37. Speed conversion means for performing mutual conversion of speed for transmitting data on B channel of 64 Kbps, 39 is the handset 31, speaker 32, microphone 33, communication interface means 36 and speed for performing voice call and data communication. A call path control means for enabling the B channel connection between the conversion means 38, and a telephone control means 40 for controlling the operation means 34, the display means 35, the terminal interface means 37 and the call path control means 39.

The operation of the conventional digital telephone having the above components when a voice-based transmission operation is performed will be described with reference to FIG. When the user of the digital telephone goes off-hook, the telephone control means 40 detects this through the operating means 34. The telephone control means 40 transmits the off-hook event to the private automatic branch exchange through the communication interface means 36 on the D channel. Upon receiving the off-hook event, the private automatic branch exchange controls the B-channel connection information for allowing the user to hear the dial tone from the handset 31, the speaker control information, the microphone control information, and the display means such as the LED and LCD. A plurality of events such as LED information and LCD information are transmitted to the digital telephone through the D channel. Upon receiving the above-mentioned various events (B channel connection information, speaker control information, microphone control information, LED information, LCD information) via the communication interface means 36, the telephone control means 40 controls the communication path control means 39 and the display means 35. The dial tone to the user and L
Display on ED and LCD. When the user who listens to the dial tone operates the dial to call the other party,
The telephone control means 40 operates the operation means 34 in the same manner as described above.
And the dial events are sequentially transmitted to the private automatic branch exchange through the communication interface means 36.
Upon receiving the dial event, the private automatic branch exchange analyzes the dial and performs the calling process of the other party. When the calling party answers, the LCD information for displaying the LCD is transmitted to the digital telephone. Upon receiving the LCD information via the communication interface means 36, the telephone control means 40 controls the display means 35 to display a message on the LCD. As described above, the voice call on the B channel becomes possible.

Next, the operation when the data system is automatically transmitted will be described. When the user of the terminal connected to the telephone through the RS-232C port performs a calling operation (for example, an ATD command in the AT command system) to the intended partner, the telephone control means 40 notifies the terminal interface means. Detect via 37. The telephone control means 40 transmits the call origination event of the terminal to the private automatic branch exchange via the communication interface means 36 through the D channel. The private automatic branch exchange which has received the call origination event analyzes the call origination event and performs a calling process of the partner terminal. When the calling party responds, the B channel connection information for performing the B channel data transmission between the terminals is transmitted to the digital telephone. Upon receiving the B channel connection information via the communication interface means 36, the telephone control means 40 controls the call path control means 39,
A path of communication interface means 36-call path control means 39-speed conversion means 38-terminal interface means 37 is formed to enable data communication on the B channel between terminals. In addition to the above-mentioned calling method, there is also a method of making a call from the terminal on behalf of it by operating the operation means 34 of the digital telephone (proxy call).

As described above, in the conventional digital telephone, the terminal connected through the RS-232C port can be used only for data communication with other terminals.

In recent years, it has become possible to connect a private automatic branch exchange to a computer, and the application on the computer side controls the call of the private branch exchange and the LCD display of the telephone set, and the private automatic branch exchange makes an event from the telephone set or the state of the telephone set. Can be notified to the computer.

The hotel function will be described with reference to FIG. 4 as an example of a system in which the private automatic branch exchange and the computer are connected in this way. In FIG. 4, 41 is a private branch exchange, 42 and 43 are digital telephones installed in the guest room,
44 is a digital telephone installed at the front, and 45 is a computer installed at the front. When a call is made from the digital telephone A42 to the digital telephone C44, that is, when a call is made from the passenger room to the front desk, the private automatic branch exchange 41 makes the front digital telephone C44 receive the call and at the same time notifies the computer 45 of the caller. . The computer 45 searches its own database and displays the information such as the name of the caller and the length of stay notified from the private branch exchange. The person at the front desk can see the information of the caller at the same time when the call is received. Exactly the same as this principle is a nurse call, and when the patient calls to the nurse center, the information of the patient can be displayed on the terminal of the nurse center. By mounting various applications on the computer in this way, various functions that cannot be achieved by the private automatic branch exchange alone can be constructed.

[0008]

However, the above-mentioned conventional system is a method of connecting a computer (terminal) to a private branch exchange, and since the private branch exchange and the terminal are usually installed at positions separated from each other, the wiring becomes very long. . There is also a problem that the processing load of the private branch exchange becomes very heavy when many terminals are connected to the private branch exchange. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a digital telephone capable of controlling a call, managing the state of the telephone, etc. from a terminal connected to the digital telephone.

[0009]

To achieve the above object, the present invention provides a communication interface means for controlling B channel communication and D channel communication with a private automatic branch exchange, and a terminal connected through RS-232C. In addition to the terminal interface means for controlling the input / output of the data of the telephone and the telephone control means for controlling the operation portion and the display portion of the telephone, the telephone interface is instructed by an application installed in the terminal connected to the telephone. Call management,
Application interface means for performing display control and notifying the terminal of an input from the operation unit of the telephone;
A terminal mode storage means for storing the mode of the terminal, which is the normal mode in which the terminal performs B channel communication or D channel communication with another terminal and the application mode in which call management and display control of the telephone are performed. It is configured to have and.

[0010]

With the above-described structure of the present invention, the call management of the telephone from the terminal connected to the digital telephone,
It becomes possible to perform status management, LCD display, etc. Therefore, compared with the conventional example, even if the number of terminals is increased, the load on the private automatic branch exchange does not become heavy, and the wiring can be easily shortened from the telephone.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A digital telephone according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system configuration diagram of a digital telephone according to an embodiment of the present invention, and FIG. 2 shows a processing flow in a communication interface means when the digital telephone receives a D channel frame from a private automatic branch exchange.

In FIG. 1, 1 is a handset for making a voice call, 2 and 3 are speakers and a microphone for making a hands-free voice call, 4 is an operating means including a dial button and a hook switch, and 5 is an LED. And a display means such as an LCD. 6 is a communication interface means for controlling communication with a private automatic branch exchange, for example, a private automatic branch exchange is 2B + D, that is, two Bs having a transmission rate of 64 Kbps.
The channel is connected to one D channel having a transmission rate of 16 Kbps, user information such as voice or data can be transmitted on the B channel, and control information or user information necessary for the exchange process is transmitted on the D channel. Reference numeral 7 is a terminal interface means for controlling data transmission / reception with a data terminal connected via the RS-232C input / output port, and 8 is a low speed transmission / reception with a terminal connected via the terminal interface means 7. Speed conversion means for performing mutual speed conversion for transmitting data on the B channel of 64 Kbps, and 9 for the handset 1, the speaker 2, the microphone 3, for performing voice call and data communication.
B between the communication interface means 6 and the speed conversion means 8
It is a communication path control means that enables channel connection. Reference numeral 10 is a telephone control means for controlling the operation means 4, the display means 5, and the communication path control means 9, and 11 is a telephone call management and display control according to an instruction from an application installed in a terminal connected to the telephone. Application interface means for performing input and notifying the terminal of an input from the operation unit of the telephone, 12 is a normal mode in which the terminal performs B channel communication or D channel communication with another terminal, and call control and display control of the telephone It is a terminal mode storing means for storing the mode of the terminal which is the application mode for performing the above.

The operation of the digital telephone of the present embodiment having the above components when receiving a D channel frame from the private automatic branch exchange will be described with reference to FIGS. From the private branch exchange, B channel data and D channel data are multiplexed and transmitted to the communication interface means 6 (S ₁ ). The communication interface unit 6 analyzes whether the received D channel frame is normal (S ₂ ), and if it is an illegal frame, discards the received frame (S ₃ ). If the received frame is normal, to analyze the events on the D-channel frame (S _4). Events from private automatic branch exchange is determined whether the terminal mode change event (S _5), if the terminal mode event, the communication interface unit 6 sets a new terminal mode in the terminal mode storage unit 12 (S ₆₎ . If the received event at S ₅ is not a terminal mode change event, check the current terminal mode (S _7). If the terminal mode is the normal mode, the communication interface means 6 sends a reception event to the telephone control means 10 (S ₈ ), and if the current terminal mode is the application mode in S ₇ , the communication interface means 6 receives the event. send the event to the application interface means 11 (S _9).

The operation at the time of receiving data from the terminal is also the same control, and the terminal interface means 7 checks the current terminal mode, and if it is the normal mode, sends the data from the terminal to the telephone control means 10 to change the terminal mode. In the application mode, the received data is sent to the application interface means 11. When the terminal is in the application mode, information such as an input from the operating means 4 to the telephone control means 10 or a change in the state of the telephone is displayed in the telephone control means.
The application interface means 11 is notified from 10. Application interface means notified
11 sends the information to the terminal interface means 7 and outputs it to the terminal. Further, when an event such as LCD display is received by the application interface means 11 via the terminal interface means 7, the application interface means 11 controls the display means 5 via the telephone control means 10.

[0015]

As described above, according to the present invention,
It is possible to notify a terminal connected to the telephone of a change in the state of the telephone, such as the telephone being off-hook, and to display an LCD, connect a call, etc. according to an event from the terminal connected to the telephone. As a result, by installing various applications on the terminal side,
It is possible to build various functions that cannot be realized with a private branch exchange alone. Further, compared with the conventional system in which control is performed from the terminal connected to the private branch exchange, the load of the exchange can be reduced and the wiring to the terminal can be simplified.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a digital telephone according to an embodiment of the present invention.

FIG. 2 is a flowchart of a processing outline when a D channel frame is received from a private automatic branch exchange according to an embodiment of the present invention.

FIG. 3 is a system premises diagram of a conventional digital telephone.

FIG. 4 is a block diagram of a conventional PBX-computer linking system.

[Explanation of symbols]

1, 31 ... Receiver, 2, 32 ... Speaker, 3, 33 ... Microphone, 4, 34 ... Operating means, 5, 35 ... Display means, 6,
36 ... Communication interface means, 7, 37 ... Terminal interface means, 8, 38 ... Speed conversion means, 9, 39 ... Call path control means, 10, 40 ... Telephone control means, 11 ... Application interface means, 12 ... Terminal mode storage Means, 41 ... Private branch exchange, 42 ... Digital telephone A, 43 ... Digital telephone B, 44 ... Digital telephone C, 45 ... Computer.

Claims (1)

[Claims] 1. A digital telephone which has at least one RS-232C input / output port and which is connected to a private automatic branch exchange through an interface consisting of at least one B channel and D channel, the B being a private branch exchange. A communication interface means for controlling channel communication and D channel communication, and RS-
A terminal interface unit for controlling input / output of data to / from a terminal connected via the H.232C, a telephone control unit for controlling the operation unit and display unit of the telephone, a speaker on B channel, a microphone, a handset Call control and display control of the telephone according to instructions from the call path control means for controlling connection to the telephone and the application installed in the terminal connected to the telephone, and input from the operation unit of the telephone to the terminal. The application interface means for notifying and the terminal mode are stored because the terminal is in the normal mode for performing B channel communication or D channel communication with other terminals, or for the application mode for performing call management, display control, etc. of the telephone. A terminal mode storage means is provided, and the terminal sent from the private branch exchange through the D channel. For the end mode change event, a new terminal mode is stored in the terminal mode storage means by the communication interface means, and for the terminal mode change event sent from the terminal, a new terminal mode is added by the terminal interface means. When the terminal mode is stored in the terminal mode storage means and the terminal mode is the normal mode, a call control event from the private branch exchange is sent to the telephone control means by the communication interface means, and a call control event from the terminal is also sent to the terminal. When the terminal mode is the application mode, the call control event from the private branch exchange is sent to the application interface means by the communication interface means, and the call control event from the terminal is also sent to the terminal interface by the interface means. Wherein the stage is passed to the application interface unit, a digital telephone and performs control of the telephone from the terminal.