JP3607484B2 - Button telephone equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a button telephone apparatus that shares an ISDN line for LAN data communication and voice communication.
[0002]
[Prior art]
In the key telephone apparatus, the state of the accommodated line (available / busy) is displayed on the line button by the LED of each key telephone. Similarly, when the ISDN line is used, the use status is displayed by associating each B1 / B2ch (channel) with one line button. The user confirms the line button when making a call, and presses the line button of an available line to capture the line.
[0003]
There is also a button telephone device that is connected to a router in the LAN and assigns a voice communication channel for a button telephone for LAN data communication when there is a request from the LAN side to be transmitted through an ISDN line. In such a button telephone apparatus, the Bch usage status is displayed in common in both the case of LAN data communication and the case of voice communication. That is, the Bch being used in the LAN data communication is recognized as being used by the user by displaying that the corresponding line button is being used on each button telephone. Therefore, the user cannot select a line whose line button indicates that it is in use, regardless of whether the line is used for LAN data communication or voice communication.
[0004]
[Problems to be solved by the invention]
Therefore, even when communication is performed on a plurality of Bch using a multilink protocol or the like during LAN data communication, all the line buttons corresponding to the Bch being used are displayed in use. For example, when all the accommodated lines are used for LAN data communication, all the line buttons on the key telephone are displayed in use, and the line can be captured for voice communication. There is a problem that it becomes impossible.
[0005]
However, a router for connecting a LAN line to an ISDN line generally has a BOD (Bandwidth on demand) function for performing communication by varying the number of Bchs used during LAN data communication. If this function is used, a part of Bch being used can be allocated to voice communication during LAN data communication.
[0006]
Therefore, the present invention provides a button telephone device that can secure a line for voice communication on the key telephone side using the BOD function of the router even when all the accommodated lines are used for LAN data communication. The purpose is to do.
[0007]
[Means for Solving the Problems]
The button telephone apparatus according to the present invention is a button telephone apparatus that shares an ISDN line for LAN data communication and voice communication, and has a line status holding unit that holds the use status of each channel of the ISDN line. in accordance with the contents of the status holding unit, a control device which channel is displayed differently on whether they are used for voice communications or those used for LAN communication on the line button display unit of the key telephone set of ISDN lines, control When the device is notified by the key phone that the use of the channel indicated by the line button display unit is indicated as being used for LAN data communication, the channel is transmitted from LAN data communication to voice communication. When multiple channels are used for LAN data communication, the line button display on each button telephone Kicking, the line button corresponding to at least one channel of the plurality of channels, and displaying the form shown can not be changed for voice communication from a LAN data communication.
[0009]
When the voice communication is completed, the control device may be configured to change the channel used for the voice communication for the LAN data communication.
In addition, when there is a request for using a channel for LAN data communication, the control device may be configured to allocate all vacant channels for the LAN data communication.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a system configuration diagram showing a basic configuration of a key telephone apparatus according to the present invention. In the figure, 10 and 11 are ISDN line interface units (ISDN line I / F units) for connecting the key telephone apparatus to the ISDN line, 12 is the network of the key telephone apparatus, and 13 is the network 12 and the key telephone 21. An interface unit (I / F unit) 14 is a control device that performs connection control in the key telephone device. In the control device 14, 15 is a connection control unit that actually executes connection control, and 16 is a line state holding unit that holds the usage state of the ISDN line I / F units 10 and 11. Reference numeral 17 denotes a router unit. In the router unit 17, 18 is a communication channel control unit for notifying the line control unit 15 of a Bch connection request, and 19 is a BchI / I connected to the ISDN line I / F units 10 and 11. F part and 20 are hub parts (HUB part) which accommodate terminal devices, such as personal computers (PC) 35 and.
[0011]
The ISDN line I / F units 10 and 11 are each connected to an ISDN line accommodated in a public exchange (not shown). The line status holding unit 16 in the control device 14 stores information about whether each ISDN line is used for voice communication, LAN data communication, or empty for each Bch, and displays the state as a button. It is displayed on the LED of the line button of the telephone 21.
[0012]
Next, the basic operation of the key telephone will be described with reference to FIG.
When the user selects a free Bch on the key telephone 21 (Bch whose line button LED is turned off) and makes a call, the network 12 is connected to the ISDN line I / F unit, and the LED of the selected line button indicates the voice. Lights to use Bch for communication.
[0013]
When data destined for an external LAN or provider is transmitted from a PC connected to the HUB unit 20, the communication channel control unit 18 in the router unit 17 sends a Bch connection request to the connection control unit 15 in the control device 14. To be notified. The connection control unit 15 confirms the line usage state of the line state holding unit 16 and connects the ISDN line I / F unit and the Bch I / F unit 19 if there is a preset number of Bch vacancies. Thereafter, the control device 14 causes the LED of the line button of the key telephone 21 corresponding to the used Bch to blink so as to indicate that it is used in data communication. At this time, the LED of the line button corresponding to the lowest number of Bch used is turned on in order to ensure the minimum for LAN data communication.
[0014]
The use status of the ISDN line I / F units 10 and 11 is stored in the line status holding unit 16 in the control device 15. That is, the line status holding unit 16 stores that the Bch is used for LAN data communication when the ISDN line I / F units 10 and 11 are assigned to the PC. In addition, regarding the transmission from the key telephone 21 to the ISDN line, it is stored that the Bch is used for voice communication.
[0015]
In accordance with the contents stored in the line status holding unit 16, the control device 14 lights the LED of the line button of the key telephone 21 when used for voice communication, and flashes when used for LAN data communication. The vacant space is displayed in a divided state such as extinguished. The display color of the LED may be changed and displayed.
[0016]
FIG. 2 is a block diagram showing an embodiment of a button telephone apparatus according to the present invention. 2, 101 to 110 are ISDN basic rate trunks (indicated as BRT1 to BRTm in the figure) corresponding to the ISDN line I / F section in FIG. 1, 12 is a network of button telephone devices, and 131 to 13n are in FIG. The key telephone interface circuit corresponding to the I / F unit 13, the key telephones 211 to 21n, 37 the router corresponding to the router unit 17 in FIG. 1, 35 the PC connected to the router 37 by LAN, and 38 the information transmission circuit, Reference numeral 39 denotes a control device corresponding to the control device 14 in FIG.
Each of the ISDN basic rate trunks 101 to 110 is connected to the public ISDN network, and on the extension side telephones 211 to 21n, an LED indicating that the line is in use is mounted for each line button.
[0017]
The control device 39 is provided with a memory 391 for storing the usage status of each ISDN basic rate trunk 101 to 110 for each Bch and the line usage indicating whether the ISDN basic rate trunk 101 to 110 is used for voice communication / LAN data communication. . The memory 391 corresponds to the line status holding unit 16 in FIG. The key telephone interface circuits 131 to 13n and the control device 39 are connected via an information transmission circuit 38. LED display information and the like on the key telephones 211 to 21n are sent from the control device 39 to the key telephones 211 to 21n via the information transmission circuit 38 and the key telephone interface circuits 131 to 13n. The router 37 is also connected to the control device 39 via the information transmission circuit 38. Information such as Bch request information at the time of multilink connection is transmitted and received between the router 37 and the control device 39.
[0018]
Next, the operation will be described with reference to the flowchart of FIG.
When data is transmitted from the PC 35 to the outside using the ISDN line (step S1), the router 37 sends a connection request with the line to the control device 39 via the information transmission circuit 38 (step S2). The control device 39 refers to the internal memory 391 that stores the line use status, checks the available Bch (step S3), and if the number of Bch used for LAN data communication registered in advance is confirmed, the router 37 The required number of ISDN basic rate trunk Bch is connected to the network (step S4). At this time, if the necessary Bch is not available, the router 37 is notified that the line cannot be connected (step S6).
[0019]
When there is a necessary Bch vacancy, the control device 39 updates the usage status and usage portion in the internal memory 391 storing the line usage state after the line connection, and the information transmission circuit 38 and the key telephone interface. The LEDs of the line buttons of the key telephones 211 to 21n are made to blink through the circuits 131 to 13n (step S7). However, among the Bch used for LAN data communication, the LED of the line button corresponding to the youngest Bch is turned on instead of blinking. This is because it is necessary to secure a minimum Bch for LAN data communication in response to voice communication requests from the key telephones 211 to 21n. It should be noted that the number of Bch used during LAN data communication in which the PC 35 communicates using the ISDN line, and the number of Bch to light the line button LED during LAN data communication can be set in advance.
[0020]
When the user of the key telephones 211 to 21n presses the blinking line button to send an outside line, the information is transmitted to the control device 39 via the key telephone interface circuits 131 to 13n and the information transmission circuit 38. Upon receiving the information, the control device 39 sends a corresponding Bch release request to the router 37 via the information transmission circuit 38. The router 37 notifies the communication partner of the communication band change of the LAN data communication, and when the band change is completed, notifies the control device 39 of the end of Bch release via the information transmission circuit 38.
[0021]
Thereafter, the control device 39 connects the Bch released by the router to the key telephone and performs normal voice communication control such as outgoing call.
[0022]
As described above, the user of the key telephones 211 to 21n confirms the state of the LED of the line button when making a call and preferentially captures an available line if there is a vacancy, and if there is no vacancy, the LAN It is possible to make a voice call by capturing the line used for data communication. In this way, the line usage LED can be seen at a glance by the LED of the line button, and the ISDN line can be shared efficiently by voice communication and LAN data communication.
[0023]
In the above-described embodiment, it has been described that the Bch to be used at the time of LAN data communication is specified in advance. However, the number of Bch may be set as the number of free Bch when starting LAN data communication. In such a case, the maximum bandwidth can be used in the LAN data communication, and then the control device 39 can allocate the Bch for the voice communication only when the voice communication is necessary. it can.
Further, if the Bch changed from the LAN data communication to the voice communication is used again for the LAN data communication when the voice communication is completed, the line use efficiency can be further improved. At this time, the control device 39 causes the LED of the line button corresponding to Bch automatically changed from voice communication to LAN data communication to blink.
[0024]
【The invention's effect】
As described above, according to the present invention, whether the ISDN line channel is used for LAN data communication according to the contents of the line status holding unit that holds the usage status of each channel of the ISDN line . Since it is configured to be displayed on the line button display portion of each key telephone to distinguish whether it is used for voice communication, even when many Bch are used in LAN data communication and wide band communication is performed, It is possible to confirm at a glance which Bch LAN data communication is being performed, and even if Bch of all ISDN lines accommodated in the key telephone is used for voice communication and LAN data communication, it can be changed to voice communication. There is an effect that the user can immediately recognize Bch.
[0025]
When the control unit is notified from the key telephone that the use of the channel indicated by the line button display unit is indicated as being used for LAN data communication, the channel is transmitted from LAN data communication to voice. Since it is configured to be changed for communication, even when Bch of all ISDN lines accommodated in the key telephone is used for voice communication and LAN data communication, the Bch used for LAN data communication is used. Bch that can be changed to voice communication can be assigned to voice communication.
[0026]
In addition, when a plurality of channels are used for LAN data communication, the control device provides LAN data communication to a line button corresponding to at least one of the plurality of channels in the line button display section of each key telephone. Since it is configured to display an aspect indicating that it cannot be changed from voice communication to voice communication, even if Bch is changed from LAN data communication to voice communication, the minimum is required for LAN data communication. Bch is secured.
[0027]
When the voice communication is completed, if the channel used for the voice communication is changed for the LAN data communication, the use efficiency of the line can be further increased.
Further, when there is a request to use a channel for LAN data communication, if all free channels are allocated for the LAN data communication, even if such control is performed, Bch Therefore, it is possible to further improve the line use efficiency.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram showing a basic configuration of a key telephone apparatus according to the present invention.
FIG. 2 is a block diagram showing an embodiment of a button telephone device according to the present invention.
FIG. 3 is a flowchart showing the operation of the key telephone apparatus according to the present invention.
[Explanation of symbols]
16 Line status holding unit 21, 211 to 21n Button telephone 37 Router 38 Information transfer circuit 14 and 39 Control device 100 ISDN network 101 to 110 ISDN basic rate trunk 131 to 13n Button telephone interface circuit 391 Memory

Claims (3)

A button telephone device sharing an ISDN line for LAN data communication and voice communication,
It has a line status holding unit that holds the usage status of each channel of the ISDN line, and according to the contents of the line status holding unit , whether the channel of the ISDN line is used for LAN data communication or used for voice communication a control device to distinguish whether there is displayed on the line button display unit of the key telephone,
The controller is
When the button telephone notifies that the use of the channel indicated by the line button display unit is being used for LAN data communication, the channel is changed from LAN data communication to voice communication. And
When a plurality of channels are used for LAN data communication, a line button corresponding to at least one of the plurality of channels on the line button display portion of each key telephone is switched from LAN data communication to voice communication. A button telephone device characterized by displaying a mode indicating that it cannot be changed . 2. The button telephone device according to claim 1, wherein when the voice communication is completed, the control device changes the channel used for the voice communication for LAN data communication. The button telephone apparatus according to claim 1 or 2, wherein when there is a request to use a channel for LAN data communication, the control device allocates all vacant channels for the LAN data communication.

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