JPH06217357A - Private branch of automatic exchange - Google Patents

Abstract

PURPOSE:To obtain the private branch of automatic exchange in which it is not required to set data again even when a connection destination of a terminal equipment is revised. CONSTITUTION:An OAT terminal equipment management means 29 managing a physical number and a logical number of an OAT terminal equipment is provided as a component of a master set 23 of the private branch of automatic exchange. Thus, the OAT terminal equipment management means 29 manages a terminal equipment physical number representing a physical position in which a terminal equipment is connected to a terminal equipment interface means 41 of a digital telephone set 25 and a terminal equipment logical number used by call control or the like of a call control means 27 to distinguish terminal equipments. Thus, data set by a terminal equipment connected to the digital telephone set 25 are valid even when the connection destination of the terminal equipment is revised and it is not required to set data again every time the connection destination of the terminal equipment is revised different from a conventional private branch of automatic exchange.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private automatic exchange apparatus which accommodates a digital telephone connected through a digital transmission line and can operate in cooperation with a computer connected through an input / output port.

[0002]

2. Description of the Related Art Conventionally, a digital telephone housed in a private branch exchange has an RS-232C input / output port,
The terminal can be connected. The term “terminal” as used herein refers to a data terminal or a computer. There are two types of usage of this data terminal: a data terminal mode and a call management terminal mode. The data terminal mode is a mode in which data communication is simply performed with a terminal connected to another digital telephone or an outside line. In the call management terminal mode, commands from the data terminal can be used to control the call to the telephone or outside line, such as automatically calling the specified telephone, or the state transition of the specified telephone to the data terminal. PBX for call status changes after command input, such as notification
It is also possible to make settings to notify the data terminal from.

Generally, in the call management terminal mode, a computer is used as a data terminal, a database of the computer, an application, etc. are used to create various functions that cannot be realized by the PBX alone. A private branch exchange and a computer in the call management terminal mode are called a PBX-computer cooperation system. This PBX-
There is a typical function called a nurse call that is realized by a computer cooperation system.

This nurse call function automatically displays patient information such as the patient's name, age, and medical condition on the terminal connected to the nurse center telephone when the patient calls the nurse center. It is a function to be done. The command from the terminal and the operation of the private branch exchange necessary for realizing this function will be described below with reference to the system block diagram.

FIG. 4 is a block diagram showing a system configuration of a conventional private automatic branch exchange. Solid line connections are control signal lines and 2
The dashed-dotted line connection indicates the B channel information path, and the dashed-dotted line connection indicates the D channel information path. In FIG. 4, the private automatic branch exchange is roughly divided into three control units: a main unit 1, an extension control unit 2, and a digital telephone 3. The main device 1 controls the entire system. The extension control device 2 is provided to distribute the addition of the main device 1, and transmits and receives D channel frames to and from a plurality of digital telephones. Further, the digital telephone 3 is connected to the extension control device 2 through the interface of 2B + D,
For example, the extension controller 2 is 2B + D, that is, 64 Kb
2 B-channels with ps transmission rate and 16 Kbps
Connected with one D channel with the transmission speed of
User information such as voice or data can be transmitted on the channel, and control information necessary for the exchange process can be transmitted on the D channel.

[0006] In the main unit 1, the communication path connection means 4 performs connection processing of the B channel between the extensions, and the call control means 5
Exchanges call control events with the digital telephone 3 through the D channel, and performs call control such as state transition of extension lines. Also, the external terminal interface control means 6 analyzes / executes a command from a terminal connected to the digital telephone 3 via the RS-232C input / output port or transmits a message from the call control means 5 to the external terminal. Further, the event distribution unit 7 transmits the event of the call control unit 5 or the external terminal interface control unit 6 to the digital telephone or distributes the event from the telephone to the call control unit 5 or the external terminal interface control unit 6. Further, the terminal mode storage means 8 stores whether the mode of the terminal connected to the digital telephone 3 is the data terminal mode or the call management terminal mode. Further, the extension interface means 9 (9a, 9b ...)
Administers an interface with the extension controller 2 and transmits / receives D channel frames to / from the extension controller 2.

In the extension control device 2, the extension control means 10 receives the D channel frame received from the call control means 5 through the event distribution means 7 and the extension interface means 9 in accordance with the destination of the frame.
Sort to. Also, the telephone interface means 11
(11a, 11b ...) Controls the interface with the digital telephone 3 and transmits / receives data to / from the digital telephone 3.

Further, the digital telephone 3 has a receiver 12 for making a voice call, a speaker 13 and a microphone 14 for making a hands-free voice call, and the operating means 15 is a dial button or a hook switch. Further, the display means 16 has a display unit such as an LED or LCD. Also, communication interface means
Reference numeral 17 controls communication with a private automatic branch exchange, and terminal interface means 18 controls data transmission / reception with a data terminal connected via an RS-232C input / output port. Further, the speed conversion means 19 transmits low speed data transmitted and received to and from the terminal connected via the terminal interface means 18,
It is a means of interconverting speeds for transmission on the 64 Kbps B channel. In addition, handset 12, speaker
The call path control means 20 to which the microphone 13 and the microphone 14 are connected is a receiver 12 and a speaker 13 for performing voice call and data communication.
Also, the B channel connection between the microphone 14, the communication interface means 17 and the speed conversion means 19 is enabled. Further, the telephone control means 21 controls the operating means 15, the display means 16, the terminal interface means 18 and the communication path control means 20, and the event discriminating means 22 controls the D channel frame transmitted / received to / from the main unit 1. It analyzes and controls the route of the D channel frame to be transmitted and received.

Before the description of the terminal system having the above-described structure, the operation when a voice system transmission operation is performed will be described first. When the user of the digital telephone goes off-hook, the telephone control means 21 detects this through the operating means 15. The telephone control means 21 is an event discrimination means 22,
The extension controller 2 via the communication interface means 17.
An off-hook event is transmitted to the telephone interface means 11 in the D channel frame. Upon receiving the off-hook event, the telephone interface means 11 transmits the off-hook event to the extension control means 10 in the D channel frame, and the extension control means 10 adds information on which telephone the frame is from to the D channel frame. To the main device 1. Upon receiving this D channel frame via the extension interface unit 9 in the main unit 1, the event distribution unit 7 determines that the transmission source of the frame is the telephone control unit 21, and transmits it to the call control unit 5. Call control means 5 that received the frame
Changes the state of the telephone from waiting to dial tone audience, B channel connection information to let the telephone user hear dial tone from the handset 12, and also LE
LED information for controlling display means such as D and LCD,
An event including control information such as LCD information is transmitted to the extension interface unit 9 via the event distribution unit 7. The extension interface means 9 transmits the received event to the extension control means 10 in the extension control means 2, and the extension control means 10 that has received the event follows the destination telephone interface means included in the D-channel frame as the target telephone interface means. The D channel frame is transmitted to 11. This telephone interface means 11 transmits to the event discrimination means 22 via the communication interface means 17 in the digital telephone 3 through the D channel. The event discriminating means 22 makes a determination based on the frame destination and passes the frame to the telephone control means 21. Upon receiving these various control information (B channel connection information, LED information, LCD information), the telephone control means 21 controls the communication path control means 20 and the display means 16 to send a dial tone to the user and also the LED. And LCD display.

When the user who hears the dial tone performs a dial operation to call the other party, the telephone control means 21 similarly detects it via the operation means 15 and communicates from the event discrimination means 22. Interface means
17, telephone interface means 11, extension control means 10,
Extension interface means 9 and event distribution means 7
The dial events are sequentially transmitted to the call control means 5 in the main device 1 via the. Upon receiving this dial event, the call control means 5 analyzes the dial and performs the calling process of the other party. When the calling party answers, LCD to that effect
The LCD information for displaying on the telephone is transmitted from the event distribution means 7 to the extension interface means 9, the extension control means 10, the telephone interface means 11 and the communication interface means 17 through the telephone control means 21 in the digital telephone 3.
Transmit to. Telephone control means that has received this LDC information
21 controls the display means 16 to display a message on the LCD. In this way, voice communication on the B channel becomes possible.

Next, the operation of the terminal system will be described. As described above, there are two types of terminal modes: the data terminal mode and the call management terminal mode. First, the case where the terminal mode is the data terminal mode will be described. When the user of the data terminal performs a data transmission operation (for example, an ATD command in the AT command system) from the data terminal to the intended partner, the telephone control means 21 detects this through the terminal interface means 18. . The telephone control means 21 transmits the event of transmission of the data terminal to the event distribution means 7 in the main unit 1 via the event discrimination means 22 and the communication interface means 17 as in the case of the voice system.
Transmit on the channel. The event distribution means 7 that has received the event investigates the terminal mode stored in the terminal mode storage means 8 because the sender of the event is not the telephone control means 21 but the terminal interface means 18. The event distribution unit 7 sends an event to the call control unit 5 if the terminal mode is the data terminal mode, and to the external terminal interface control unit 6 if the terminal mode is the call management control unit. Is in the data terminal mode, the received event is handled by the call control means 5
Send to. The call control means 5 that has received this outgoing event
Analyzes the outgoing event and performs the calling process of the partner data terminal. And when the caller answers,
The B channel connection information for transmitting data on the B channel between the data terminals is transmitted to the digital telephone 3. Upon receiving the B channel connection information via the communication interface means 17 in the digital telephone 3, the telephone control means 21 controls the call path control means 20 so that the communication interface means 17 causes the call path control means 20 and the speed conversion means. 19 Further, a path called terminal interface means 18 is formed to enable data communication on the B channel between data terminals.

In addition to the above-mentioned calling method, there is also a method (proxy calling) in which the calling from the data terminal is performed by operating the operation means 15 of the digital telephone. Next, the call management terminal mode, which is another mode of the terminal system, is a mode in which the private automatic branch exchange and the computer are operated in cooperation with each other, and the flow of events in this mode will be described. In the call management terminal mode, a data link is formed from the beginning between the external terminal interface control means path in the main unit 1 and the terminal interface means 18 in the digital telephone 3, and the data from the terminal is the terminal interface. The D channel frame is passed from the means 18 to the communication interface means 17, telephone interface means 11, extension control means 10, extension interface means 9 and event distribution means 7 from the event discrimination means 22. Upon receiving this event, the event distribution unit 7 investigates the terminal mode by the terminal mode storage unit 8 at the same time as the operation in the data terminal mode, and the event is the external terminal interface control unit 6 because the terminal mode is the call management control unit. Hand over to. Upon receiving the event from the terminal, the external terminal interface control means 6 analyzes the event and transmits the control event to the call control as necessary.

On the contrary, when an event is transmitted from the call control means 5 to the terminal connected to the digital telephone 3, for example, the call control means 5 notifies the terminal connected to the digital telephone 3 that a call state transition has occurred. In the case of notifying the caller, the call control means 5 notifies the state transition notification event from the external terminal interface control means 6 to the event distribution means 7, extension interface means 9, extension control means 10, telephone interface means 11, communication interface means 17, and event discrimination. To the terminal interface means 18 via the means 22. The terminal interface unit 18 received as the D channel frame transmits an event to the terminal by transmitting data to the RS-232C input / output port.

In order to realize the nurse call function, first, when an incoming call is received from the nurse center telephone, it must be set so as to notify the terminal to that effect. The event is called a monitor event, and this monitor event includes the number of the telephone to be monitored and a notification state indicating the state to be notified.
In this case, since the telephone to be monitored must be a telephone at the nurse center and the call state must be notified when an incoming call arrives, the "incoming state" is set. The monitor event is input from the terminal connected from the digital telephone 3, and as described above, the terminal interface means.
It is passed to the external terminal interface control means 6 in the main unit 1 as a D channel frame by 18. Upon receiving the monitor event, the external terminal interface control means 6 transmits the monitor information to the call control means 5 in order to monitor the corresponding telephone according to the detailed information included in the monitor event. Call control means 5 that has received this monitor information
Sets the monitor bit of the corresponding telephone and stores the notification state (incoming state).

Furthermore, when an incoming call from the patient's telephone to the nurse center occurs, the call control means 5 shifts the state of the monitored telephone to the incoming call state, so the state transition to the external terminal interface control means 6 is made. Send a notification event. The state transition notification event is accompanied by detailed telephone information of the telephone number of the transmission source indicating which telephone has received an incoming call from the monitored telephone. External terminal interface control means 6 that has received the state transition notification event
Sends the same event to the terminal where the monitor is set. The terminal that received the state transition notification event needs to store the patient data in the database in advance, but since the sender phone number can be known from the detailed information of the received event, the sender, that is, the patient who called The patient data can be extracted from the database and displayed.

As described above, in the conventional private automatic branch exchange, a new function is created in cooperation with the computer.

[0017]

However, in the above-mentioned conventional configuration, when the connection destination of the terminal is changed, in the case of the nurse call described above, the location of the nurse center is changed and the telephone to which the terminal is connected is changed. For example, the previously set monitor becomes invalid, and it is necessary to change to send a state transition event to the RS-232C input / output port of the newly connected telephone. As described above, each time the connection destination of the terminal is changed, it is necessary to set data from the beginning, which is very troublesome.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a private automatic exchange apparatus which does not need to reset data even if the connection destination of a terminal is changed.

[0019]

In order to solve the above-mentioned problems, an automatic private branch exchange apparatus of the present invention is an extension control for transmitting / receiving control information between a main unit which controls the entire system and a plurality of digital telephones. An automatic private branch exchange performed by a device, wherein the main device analyzes and executes a command from a call control means for controlling a call such as a connection between internal lines and an external line, and a terminal connected to the digital telephone. External terminal interface control means for managing the correspondence between the terminal physical number indicating which digital telephone the terminal is connected to and the terminal logical number used by the call control means for distinguishing the terminal. Means and an interface between the extension control device, and an extension interface means for transmitting and receiving data to and from the extension control device; An event distribution means for distributing control information from the interface means to the call control means or the external terminal interface control means, and a mode of a terminal connected to the digital telephone, which is a data terminal or a call management terminal, is stored. And a terminal mode storage means for performing the operation.

[0020]

With the above structure, the external terminal management means manages the physical number of the terminal indicating the physical position to which the terminal is connected and the terminal logical number used for distinguishing the terminal by call control or the like. The data set from the terminal connected to the telephone will be valid even if the connection destination of the terminal is changed, and there is no need to reset the data every time the connection destination of the terminal is changed. It will be possible to provide highly convenient services.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the system configuration of a private automatic branch exchange according to an embodiment of the present invention.
In FIG. 1, the private automatic branch exchange is roughly divided into three control units: a main unit 23, an extension control unit 24, and a digital telephone 25. This main unit 23 controls the entire system,
The extension controller 24 is provided to distribute the load on the main unit 23, and transmits / receives D channel frames to / from a plurality of digital telephones. Reference numeral 25 is a digital telephone connected to the extension control device 2 through a 2B + D interface. For example, the extension control device 24 is 2B + D.
D, that is, two B channels having a transmission rate of 64 Kbps and one D channel having a transmission rate of 16 Kbps are connected, and user information such as voice or data can be transmitted on the B channel, and the D channel is required for exchange processing. Control information is transmitted.

In the main device 23, the communication path connecting means 26
Performs connection processing of the extension channels on the B channel, and the call control means 27 exchanges a call control event with the digital telephone 25 through the D channel to perform call control such as state transition of the extension. Further, the external terminal interface control means 28 analyzes / executes a command from a terminal connected to the digital telephone 25 via the RS-232C or the call control means 27.
Send the message from to the external terminal. Further, the external terminal interface management means 29 manages the correspondence between the physical number indicating the physical position to which the terminal is connected and the logical number. Further, the event distribution means 30 transmits an event from the call control means 27 or the external terminal interface control means 28 to the digital telephone 25 or distributes an event from the telephone to the call control means 27 or the external terminal interface control means 28. Further, the terminal mode storage means 31
Stores whether the mode of the terminal connected to the digital telephone 25 is the data terminal mode or the call management terminal mode. Further, the extension interface means 32 (32
a, 32b ...) Controls the interface with the extension control device 24 and transmits / receives D channel frames to / from the extension control device 24.

Further, in the extension control device 24, the extension control means 33 receives the D channel frame received from the call control means 27 via the event distribution means 30 and the extension interface means 32 according to the destination of the frame of each digital telephone 25.
Sort to. That is, the extension control means 33 is configured so that the main device 23
It controls the transmission and reception of control information between the main device 23 and the digital telephone 25. Further, the telephone interface unit 34 (34a, 34b ...) Controls the interface with the digital telephone 25 and transmits / receives data to / from the digital telephone 25.

Further, the digital telephone 25 has a handset 35 for making a voice call, a speaker 36 and a microphone 37 for making a hands-free voice call, and the operating means 38 is a dial button or a hook switch. Further, the display means 39 is composed of an LED, an LCD or the like. Further, the communication interface means 40 controls a call with the private branch exchange. That is, the communication interface unit 40 has at least one RS-232C input / output port, and has an extension controller and at least one B.
It is connected by an interface consisting of a channel and a D channel, and controls B channel communication and D channel communication with the extension control device. Further, the terminal interface unit 41 controls transmission / reception that controls input / output of data with a data terminal connected via the RS-232C input / output port. Further, the speed conversion means 42 performs mutual speed conversion for transmitting low speed data transmitted / received to / from a terminal connected via the terminal interface means 41 on the B channel of 64 Kbps. In addition, handset 3
5, the speaker 36 and the microphone 37 are connected to the call path control means 43 for receiving a voice call or data communication, the handset 35,
The B channel connection between the speaker 36, the microphone 37, the communication interface means 40 and the speed converting means 42 is enabled. The telephone control means 44 is a telephone operation means
It controls the 38, the display means 39, the terminal interface means 41, and the communication path control means 43. Further, the event discriminating means 45 analyzes the D channel frame transmitted / received to / from the main unit 1 and controls the route of the D channel frame to be transmitted / received. That is, the event discrimination means 45 is
It controls the transmission / reception path of the D channel frame among the communication interface means, the terminal interface means and the telephone control means.

The operation of the call management mode of the terminal system having the above configuration will be described below. Since the operation of the voice system and the data terminal mode of the terminal system are the same as those of the conventional example, the description thereof will be omitted here.

FIG. 2 is a sequence flow chart showing a series of processing when the terminal performs call management in the private automatic branch exchange shown in FIG. As shown in FIG. 2, first, when the terminal starts call management, an "operation start event" is input from the terminal (step 46). This "operation start event" forms a D channel frame in which the physical number of the telephone is set as the transmission source by the terminal interface means 41 and transmits it to the event discrimination means 45. Upon receiving this frame, the event discriminating means 45 receives the communication interface means 40 from the telephone interface means 34, the extension control means 33, the extension interface means 32, and the event distributing means 30.
It transmits to the external end interface control means 28 (steps 47, 48, 49). Further, the external terminal interface control means 28 allocates the "operation start event" sequentially from the logical number 1 in order of transmission, and the number 66 of call management terminals shown in FIG.
Is incremented by 1 and the physical numbers shown in FIG. 3 of the terminal stored in the transmission source of the “operation start event” are stored in 67 to 69. After this, the event notified from the terminal to the call control such as the “monitor event” is the external terminal interface control means 28.
Then, the transmission source of the event is rewritten from the physical number to the logical number and passed to the call control means 27 (steps 50 to 53). Then, the call control means 27 stores the notification destination at the time of state transition by the "monitor event" by a logical number, and when there is a state transition of the call being monitored (step 54), the call control means 27 Send a "state change notification event" to the external terminal interface control means 28 (step 5).
Five). Upon receiving this event, the external terminal interface control means 28 converts the logical number into a physical number by the external terminal interface management means 29, and from the event distribution means 30 to the terminal interface means 41 in the digital telephone 25 of the corresponding physical number. Extension interface means
32, extension control means 33, telephone interface means 34,
Communication interface means 40 and event discrimination means 45
(Steps 55 and 56). Upon receiving the D channel frame including this event, the terminal interface means 41 transmits a "state change notification event" to the terminal (step 57). When the terminal is relocated to another digital telephone, the "relocation start event" is input from the terminal before the relocation (step 58). In the same manner as the above, the terminal interface means 41 which has received the "relocation start event" transmits it to the external interface control means 28 in the main device 23 (steps 59, 60, 61). Upon receiving the "relocation start event", the external interface control means investigates and stores the logical number corresponding to the physical number of the event transmission source by the external terminal interface management means 29. After the terminal is moved to another digital telephone, a "relocation end event" is input from the terminal (step 62). Similarly to the "operation start event", the external interface control means from the terminal interface means 41
This event is passed to 28 (steps 63, 64, 65), and the external terminal interface control means 28 receiving this event gives the physical number to the logical number stored earlier,
The external terminal interface management means 29 is instructed to change the physical number stored in the transmission source of the "relocation end event", that is, the physical number of the connection destination of the new terminal.

Thereafter, when the "state transition notification event" is sent from the call control means 27 to the external terminal interface means 28 by the monitor set before the terminal is relocated, the logical number of the terminal is the same as before the relocation. However, since the logical number and physical number table managed by the external terminal interface management means 29 has been changed to a new physical number, a "state transition notification" event will be sent to the terminal after relocation. Will be sent.

As described above, according to the present embodiment, the terminal number used by the call control means is different from the physical number, and the logical number is used, and the external terminal interface management means 29 is used.
Manages the correspondence between logical numbers and physical numbers, there is no need to set data even after the terminal is relocated.

[0029]

As described above, according to the present invention, since the external terminal interface management means is provided, it is not necessary to set the data each time the connection destination of the call management terminal is changed, and the connection destination can be easily changed. Therefore, it is possible to provide a very convenient service to the user of the terminal connected to the digital telephone.

[Brief description of drawings]

FIG. 1 is a block diagram showing a system configuration of a private automatic branch exchange according to an embodiment of the present invention.

FIG. 2 is a sequence flow showing a series of processing when performing call management in the private branch exchange of FIG.

FIG. 3 is a table diagram used by an external terminal interface management unit 29 in the main device 23 in FIG. 1 to associate a physical terminal number with a logical terminal number.

FIG. 4 is a block diagram showing a system configuration of a conventional private automatic branch exchange.

[Explanation of symbols]

 23 Main device 24 Extension control device 25 Digital telephone 26 Call path connection means 27 Call control means 28 External terminal interface control means 29 External terminal interface management means 30 Extension interface means 31 Event distribution means 32 (32a, 32b ...) Terminal mode storage means

Claims (1)

[Claims] 1. An automatic premises exchange device in which an extension control device controls transmission / reception of control information between a main device that controls the entire system and a plurality of digital telephones, wherein the main device is connected to each other via an extension line or an outside line. A call control means for controlling a call such as a line connection, an external terminal interface control means for analyzing and executing a command from a terminal connected to the digital telephone, and a digital telephone to which the terminal is connected External terminal management means for managing the correspondence between the physical number of the terminal shown and the terminal logical number used by the call control means to distinguish the terminal, and the data between the extension control device and the interface with the extension control device. Extension interface means for transmitting and receiving a call, and control information from the extension interface means for the call control means or the external terminal interface. An event distribution means for distributing to over the face control means, the mode of the terminal connected to the digital telephone private automatic branch exchange apparatus provided with a terminal mode storage means for storing whether the call management terminal or the data terminal.