JPH04132394A - Key telephone system - Google Patents

Abstract

PURPOSE:To easily set the control system of a signal line only by operating the key pad operation of a telephone terminal by preparing function setting data for selecting the control system of the signal line of a data terminal interface corresponding to a prescribed operation of the key pad, and transmitting the data to a main device. CONSTITUTION:A key telephone set (DKT) interface part 11 of a main device 1 is equipped with a 2B+D preparing circuit 29 and a 2B+D separator circuit 31. The 2B+D preparing circuit 29 receives communication data from each of designated two outgoing time slots of a time switch 17, receives control data from a controlling part 19 through a bus 21, multiplexing these data in order to prepare the packet of the 2B+D, and transmits it to a key telephone system 3. Thus, the control system of the signal line of each data terminal interface 27 is controlled by the main device 1, so that it is not necessary to provide a dip switch at each data terminal interface unit, and a cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) The present invention relates generally to key telephone devices, and more particularly to key telephone devices having a data terminal interface for connecting a data terminal such as a personal computer. Regarding.

(Prior Art) As an interface for connecting a data terminal such as a personal computer to a button telephone device, R5-
232C is commonly used. For example, a key telephone has a built-in data interface unit (DIU) with an R8-232C interface;
A personal computer or the like is connected to the IU. In this case, it is necessary to change the control method of the R5-232C signal line on the DIU side depending on the communication software installed in the data terminal. In other words, a control method that always keeps the data set ready signal (D D in conjunction with the data terminal ready signal (ER) from the terminal.
A method for controlling on/off of R is required. Similarly,
The control method for the data channel received carrier detection signal (CD) also needs to be changed depending on the communication software of the data terminal. - Therefore, conventionally, a dip switch is provided in the DIU, and the control method for DR and CD can be switched using this dip switch.

(Problem to be Solved by the Invention) From the point of view of reducing the cost of the device, it is preferable not to have the IU dip switch as described above.

Further, when a dip switch is changed, in order to set the corresponding control mode, it is necessary to turn off the power to the DIU and turn it on again to perform initial processing. However, such operations are troublesome for the user.

In order to reduce costs, a jumper wire may be used instead of the dip switch, and the control mode may be selected depending on whether or not the jumper wire is cut. However, D.I.
The work of opening the U case lid and cutting the jumper wires is also troublesome for the user. Furthermore, it is troublesome to go around to each button telephone one by one to perform the setting work.

Therefore, an object of the present invention is to set the control method of the signal line of the data terminal interface under control from the key telephone main unit, thereby eliminating the need for a dip switch in the DIU, reducing the cost of the device, and reducing the setting work. The aim is to reduce the inconvenience as much as possible.

[Structure of the invention]

(Means for Solving the Problems) According to the present invention, the telephone terminal includes function setting data for selecting a control method for a signal line of a data terminal interface in response to a predetermined operation performed on a keypad. Function setting data transmitting means is provided for generating and transmitting the data to the main device. The main device includes a control method storage means that recognizes and stores the control method selected based on the function setting data from the telephone terminal, and a control method storage means that generates and stores function data indicating the control method stored in the control method storage means. and functional data transmitting means for transmitting to the terminal interface unit. Further, the data terminal interface unit is provided with an interface control means for controlling the signal line of the data terminal interface according to a control method indicated by the function data from the main device.

(Function) When a predetermined operation is performed on the keypad of the telephone terminal, function setting data for selecting the control method of the data terminal interface is transmitted from the telephone terminal to the main device. The main device recognizes and stores the selected control method based on this function setting data. Functional data indicating this stored control scheme is then created and sent from the master device to the data terminal interface unit. The data terminal interface unit controls the signal line of the data terminal interface according to the control method indicated by this function data.

In this way, the signal line control method can be easily set by simply operating the telephone terminal's keypad.

(Example) Examples will be explained below.

FIG. 1 shows a system configuration of an embodiment of a key telephone device according to the present invention.

This system uses a main device (K) with exchange and control functions.
SU) 1, n button telephones (DKT) 31 to 3n
A personal computer (PC) 51 is connected to each button telephone through the R3-232C interface.
~5n are connected. Further, an analog office line 71 and a modem 9 are connected to the main device 1, and an analog office line 72 is connected to the modem 9. The interface between modem 9 and main device 1 is R5-232C.

The main device 1 includes key telephone (DKT) interface units 111 to 11 to which key telephones 31 to 3n are connected.
a station line interface section 13 to which the 01 station line 71 is connected;
and modem interface section 1 to which modem 9 is connected.
5. These interface sections are connected to a time switch 17, and the time switch 17 exchanges communication paths between these interface sections. Furthermore, these interface sections and time switch 17 are connected via a control data bus 21 to a control section 19 for controlling the operation of this system.

The button telephone 3 includes a main unit (KSU) interface unit 23 connected to the DKTKT interface 1 of the main unit 1, a telephone circuit 25 including, for example, a speech network, a dial circuit, a handset, etc., for performing telephone functions; and a data terminal interface section 27 for connecting a data terminal such as the personal computer 5. Ping-pong transmission is performed between the KSUS rain interface 1 and the DKT interface section 1 using, for example, a 2B+D format time division channel.

In other words, a data packet combining two time-division signal channels B1 and B2 and one data channel D is KS.
Information is exchanged between the US interface 3 and the DKT interface section 1.

Here, the B1 channel is used for transmitting voice data transmitted and received by this button telephone during a call, and the B2 channel is used for transmitting data transmitted and received by the personal computer 5 during data communication.

On the other hand, the D channel is assigned to transmit various control commands and result codes for controlling operations such as origination, reception, response, interruption and resumption of data communication, and termination of calls. In this specification, data transmitted through the B channel is collectively referred to as "communication data J", and data transmitted through the D channel is collectively referred to as "control data".

In the main device 1, the DKTKT interface 1 has 2
It has a B+D creation circuit 29 and a 28+D separation circuit 31.

The 2B+D creation circuit 29 receives communication data from each of the two designated downlink time slots of the time switch 17, receives control data from the control unit 19 via the bus 21, and multiplexes these data to create a 2B+D packet. button to send to telephone 3. Also, 2
The B+D separation circuit 31 receives 28+D packets from the button telephone 3 and separates them into each channel, sends the two communication data to two designated upstream time slots of the time switch 17, and sends the control data to the bus 21.
The data is sent to the control unit 19 through Transmission by the 2B+D creation circuit 29 and reception by the 2B+D separation circuit 31 are performed alternately.

The modem interface section 15 and the central office line interface section 13 are not directly related to the present invention, so their explanations will be omitted.

In FIG. 1, only the portions related to communication control of the personal computer 5 from the configuration of the control unit 19 are extracted and shown. That is, the DKT and station line status management unit 45
, a function setting management unit 47, and a RAM 49 are shown. The DKT management unit 45 connects the button telephones 31 to 3n through the DKTKT interfaces 11 to lln.
By exchanging control data with the button telephone terminal 3
1 to 3n and personal computers 51 to 5n connected thereto.

The function setting management unit 47 controls each button telephone set 31 to 3.
n and the functions of each personal computer 51 to 5n, and the control method of the RD of R3-232C of the personal computers 51 to 5n is one of the functions.
Set by this unit. The configured functions of each terminal are recorded in a function table in four RAMs.

FIG. 2 shows the configuration of the function setting management unit 47. In the figure, a D channel data decoder 151 receives control data input from the button telephone 3 through the D channel. When the originating station address of this control data indicates the key telephone 3, this decoder 151 decodes the control data. The decoded control data is function setting start data that is a request to start function setting processing, function setting data that indicates a function item, terminal number, and content to be set for that item, or function setting that is a request to end function setting processing. When the data is the end data, the D channel data decoder 151 sends the setting start signal, function setting data, or setting end signal to the setting data decoder 153.
give to

The setting data decoder 153 is activated by the setting start signal and stopped by the setting end signal.

During its operation, the setting data decoder 153 decodes input function setting data and recognizes function items, terminal signals, and function contents to be set. Then, along with the recognized terminal numbers and function items, the contents to be set regarding the functions of the key telephones 31 to 3n are stored in the DKT function data writing section 155 in the personal computers 51 to 5n (data terminal interface circuit interface sections 271 to 27n).
) are notified to the DIU function data writing unit 157 respectively. Here, the function items notified to the DIU function data writing unit 157 include the DR control method of R3-232C (a method in which DR is always on or a method in which it is linked to ER).

The DKT function data writing unit 155 and the DIU function data writing unit 157 write the notified function contents to the RAM 4.
9, and writes this in the column corresponding to the notified terminal number and function item in the function table (not shown) in the RAM 49.

When the setting end signal is issued, the setting data decoder 153
will be suspended. On the other hand, the function data sending unit 159 is activated by the setting end signal, reads out the set contents of each function item related to each terminal number from the function table in the RAM 49 in order, and outputs the function data including this information. is created and sent to each terminal via the D channel.

FIG. 3 shows the detailed configuration of the KSUS fin interface 3 and the data terminal interface unit 27 in the button telephone terminal 3.

Inside the KSU interface section 2, a ping pong transmission circuit 53 and a DKT control processor 55 are provided. The ping-pong transmission circuit 53 is connected to the DKTKT interface 1 of the main device 1 through a two-wire signal line 57. This ping-pong transmission circuit 53 has a 2B+D separation circuit 59 and a 2B+D creation circuit 61, as shown in FIG. 2B+D
The separation circuit 59 receives the downlink packet from the main device 1 and outputs downlink data PH0I, PH02, DOUT for each channel.
Separate and output. The outputted downlink communication data (voice data) PH01 of the B1 channel is sent to the telephone circuit 25,
The 2-channel downlink communication data PH02 is sent to the data terminal interface section 27, and the downlink control data DOUT is sent to D.
KT control processor 55 and data terminal interface section 2
Sent to 7. Further, uplink communication data (voice data) PHII of the B1 channel is sent from the telephone circuit 25, and uplink communication data PH12 and uplink control data DIN of the B2 channel are sent from the data terminal interface unit 27.
The signal is input to this ping-pong transmission circuit 53. These upstream data PHII, PH12, DIN are 2B+D creation circuit 6
1 to create a 2B+D uplink packet, which is sent to the main device IDKT interface section 11 through the signal line 57. The DKTKT interface 1 also has a similar configuration to this ping-pong transmission circuit 53.

This ping-pong transmission circuit 53 and the DKT interface section 1
The reception of downlink packets and the transmission of uplink packets between parts 1 and 1 are performed alternately in a time-division manner.

The DKT control processor 55 is mainly used to control the operation of the telephone circuit 25, and as shown in FIG. It has a D channel control signal generation section 69. The telephone control data analysis unit 63 receives the downlink control data DOUT from the ping-pong transmission circuit 53, and if it is control data for this button telephone, analyzes it and controls the lighting of the display LED and the ringing tone according to the result. A control signal for ringing, etc. is sent to the telephone circuit 25. The key/hook switch signal receiving section 65 receives from the telephone circuit 25 a key signal generated by pressing a dial key or a function key (not shown) of the button telephone, and a hook switch signal indicating on-hook/off-hook of the handset. Control data corresponding to the signal is created and sent to the uplink control data sending section 67. The uplink control data sending unit 67 sends the received control data to the data terminal interface unit 27 as first uplink control data DINI.

The key/hook switch signal receiver 65 further provides information indicating whether or not there is a signal input from the telephone circuit 25 to the D channel control signal generator 69. Based on the information, the D channel control signal creation section 69 creates a D channel control signal DCNT which becomes, for example, a high level if the above signal is input, and a low level if there is no signal input, and provides this to the data terminal interface section 27. .

As described later, this D channel control signal DC
D from the data terminal interface section 27 by the NT.
The operation of sending control data to the channel is controlled.

Next, the data terminal interface section 27 will be explained. Third
Referring to the figure, this data terminal interface unit 27 constitutes an R3-232C interface with the personal computer 5 (ER, DR, CI, SD and R
(Only line D is shown). The data terminal ready signal ER and BRATA set ready signal DR of R8-2B2C are transmitted between the data terminal interface unit 27 and the personal computer 5.
This is used to confirm that both are in a mutually operable state. In this case, the data terminal interface unit 27 must select a control method for the data set ready signal DR between a method of always turning on the DR or a method of linking it with the ER, depending on the communication software of the personal computer 5.

As will be described later, this selection is made by the DIU control processor based on function data sent as downlink control data DOUT from the main device 1 through the ping-pong transmission circuit. The called display signal CI is the personal computer 5
This signal indicates that a call is being received.

The transmission data SD from the personal computer 5 is D
The signal is input to the IU control processor haflector 75. The selector 75 is controlled by a mode signal MODE that takes a high/low level from the processor 77, and the selector 75 passes the transmission data SD only when the mode signal MODE is at a high level. The transmission data SD that has passed through the selector 75 is input to the ping-pong transmission circuit 53 as B2 channel uplink communication data channel uplink communication data PH12. Further, B2 channel downlink communication data PH02 from the ping-pong transmission circuit 53 is input to the selector 75. The selector 75 passes the 82-channel downlink communication data PH02 when the mode signal MODE is at a high level, and this passed data becomes the received data RD of the personal computer 5. When the mode signal MODE is at a low level, the selector 72 passes the input data RD' of the DIU control processor Huff and sets it as the received data RD of the personal computer 5. The mode signal MODE is set to a high level when the personal computer 5 performs data communication.

In this state, the transmission data SD from the personal computer 5 becomes the B2 channel uplink communication data PH12, and the B2 channel downlink communication data PH02 becomes the reception data RD of the personal computer 5. As a result, communication data can be exchanged between the personal computer 5 and the main device 1. On the other hand, when controlling the personal computer 5 for sending and receiving calls, the mode signal MO
DE is brought to a low level. In this state, the transmission data SD from the personal computer 5 is not sent to the B channel but is sent to the DIU control processor huff, and the data RD' output from the DIU control processor huff.
becomes the received data RD of the personal computer 5.

As a result, control data can be exchanged between the personal computer 5 and the DIU control processor 77,
During this control data access period, the communication data is blocked.

FIG. 6 shows the configuration of the DIU control processor Huff section. This microprocessor 77 includes a downlink data receiving section 83, a downlink data decoder 85, and a DR control section 87.
, CI control unit 89, mode control unit 91. SD receiving section 93
．． The SD decoder 95° has an upstream data sending section 97.

Downlink data receiving section 83 receives D channel downlink data DOUT from ping pong transmission circuit 53, extracts control data for data communication control microprocessor 77 from therein, and sends this to downlink data decoder 85. The downlink data decoder 85 decodes the received downlink control data.

Downlink data includes functional data including DR control data that specifies the DR control method, incoming data that indicates incoming calls, connection data that indicates that the time switch 17 has connected to another extension terminal, and disconnection from that extension terminal. There are disconnection data indicating that the modem has been disconnected from the modem, modem connection data indicating that the modem has been connected to the modem by the time switch 17, and modem disconnection data indicating that the modem has been disconnected from the modem. The above DR
When the control data is decoded, the decoding result is D
The signal is sent to the R control unit 87, where the DR control method is selected. When the incoming call data is decoded, the CI control section 89 is driven and a called display signal CI is sent to the personal computer 5.

When the connection data and disconnection data are decoded, result codes corresponding to those data are sent to the personal computer 5 through the selector 5 as data RD'.

In addition, the mode control unit 91 keeps the mode signal MODE at a low level in an idle state, but when connection data or modem connection data is decoded in this state, it raises the mode signal MODE to a high level, and then outputs disconnection data. Or, when the modem disconnection data is decoded, the mode signal MODE is returned to low level.

SD receiving section 93 receives transmission data SD from personal computer 5, extracts a control command commonly called an AT command from the data stream, and sends it to SD decoder 95. SD decoder 95 decodes the control command. These control commands include a call command to make a call, an incoming call response command to answer an incoming call, an interrupt command to interrupt data communication,
There are a return command for restarting interrupted data communication, a call termination command for terminating data communication, etc. Control data corresponding to the decoded command is sent to the uplink data sending unit 97, from which it is output as M2D channel uplink data DIN2. Also, outgoing commands,
Once the abort or end command is decoded,
A result code indicating that these data have been received is sent to the personal computer 5 through the selector 75 as data RD'. Further, when the send command or the return command is decoded, the mode control 91 sets the mode signal MODE to a high level, and when the interrupt command is decoded, the mode signal MODE is set to a low level.

The uplink data transmitter 109 includes a DKT control processor 55.
A D channel control signal DCNT from . When this control signal DCNT is at low level (
In other words, only when the first D channel upstream data DINI is not output from the DKT control processor 55, the upstream data sending unit 109 outputs the second channel upstream data DIN2. Referring to FIG. 3, the second D channel upstream data DIN2 and the first D channel upstream data DIN1
It passes through the OR gate 81 and is input to the ping-pong transmission circuit 53 as D channel upstream data DINI.

Control by the D channel control signal DCNT prevents interference between the second D channel upstream data DIN2 and the first D channel upstream data DINI.

Next, the DR in the button telephone configured as above is explained.
The selection operation of the control method will be explained with reference to FIG.

While the main unit (KSU) 1 is powered on, the user first inputs predetermined function setting start data from the keypad of any key telephone (DKT) 3. This function setting start data is output from the DKT control processor 55 in the DKTB as the first upstream D channel data DINI, and is sent to the KSUI via the upstream D channel by the ping-pong transmission circuit 53.
Received on 9th. In the control section 19, the D channel decoder 151 of the function setting management unit 47 activates the setting decoder 153 in response to this function setting start data.

Next, the user selects “DR” from the keypad of the same DKT3.
The function setting item "Control method setting", the terminal number of the personal computer 5 in question, and the DR control method you want to set (that is, always ON method or ER
Enter the number indicating the method (linked to the system). These pieces of information are input to the DKT control processor 55 in the DKTB, output as function setting data, and received by the control unit 19 in the KSUI through the same route as above. Control unit 19
Internally, this function setting data is stored in the function setting management unit 4.
The setting data decoder 153 of No. 7 decodes the data, and the DIU function data writing unit 157 receives the decoding result.
Data indicating the DR control method to be set is written in the column corresponding to the decoded terminal number and function item in the function table in the RAM 49.

Furthermore, if there are other contents to be set regarding other terminals or other function items, the user subsequently inputs function setting data regarding them as well. These other function setting data are also recorded in the function table in the RAM 49 through operations similar to those described above.

After inputting all necessary function setting data, the user inputs predetermined function setting end data from the keypad. This function setting end data is also sent to KS via the same route as above.
The information is input to the control unit 19 within the UI. In the function setting management unit 47 of the control section 19, the setting data decoder 153 is stopped in response to this function setting end data, while the setting data decoder 153 is stopped.
Functional data sending unit 159 is activated. The function data sending unit 159 sequentially reads data of various function contents (referred to as function data) regarding each terminal number from the function table in the RAM 49, and transmits the data to the DKT3 corresponding to each terminal number.
Send to. This functional data includes data (referred to as DR control data) indicating the DR control method set as described above.

Functional data is input to DKT3 through the D channel. In the DKTB, the functional data is sent to the Bing Bong transmission circuit 53.
The data is separated from the B1 and B2 channel data and sent to the DKT control processor 55 and the DIU control processor as downlink D channel data DOUT. D.I.U.
Within the control processor frame, only the data related to the personal computer 5 from among the input functional data is selected by the downlink data receiving section 83 and sent to the downlink data decoder 85. Downlink data decoder 85 decodes the functional data. D included in this functional data
When the R control data is decoded, the DR control unit 87 is notified of the decoding result. According to the notified decoding result, the DR control unit 87 selects either a method in which the DR control method is always ON or a method in which the DR control method is linked to ER, and thereafter maintains this selected method unless new R control data is decoded. do.

In the above embodiment, the setting of the control method only for the DR of the R5-232C has been described, but the same setting is possible for the control method of the data channel reception carrier detection signal (CD) of the R8-2320.

In other words, as with the DR control method, whether the CD control method is always on or only when a carrier is detected is a function input in advance from the keypad of the button telephone. This can be determined by the master device based on configuration data.

〔Effect of the invention〕

As explained above, according to the present invention, since the control method of the signal line of each data terminal interface is controlled by the main device, there is no need to provide a dip switch in each data terminal interface unit, resulting in cost reduction. Moreover, since the control method setting work can be done centrally in one place, there is no need to go through the trouble of setting each data interface unit one by one.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of an embodiment of the button telephone device according to the present invention, and FIG. 2 is a block diagram showing the configuration of the function setting management unit of the control section in the main device of FIG. , FIG. 3 is a block diagram showing the configuration of the KSU interface section and data terminal interface section in the button telephone set of FIG. 1, FIG. 4 is a block diagram showing the configuration of the ping-pong transmission circuit of FIG. 3, and FIG. 6 is a block diagram showing the configuration of the DKT control processor in FIG. 3, FIG. 6 is a block diagram showing the configuration of the DIU control processor in FIG. 3, and FIG.
The figure is a sequence chart showing the data communication procedure between each part when setting the DR control method of R5-232C in the embodiment of FIG. 1. 1... Main unit (KSU), 3... Key telephone (
DKT), 5...Personal computer (pc
>, 11...DKT interface unit, 19...control unit, 23...KSU interface unit, 25...
Telephone circuit, 27... data terminal interface section (
D I U), 47...Function setting management unit, 49
...RAM, 55...DKT control processor, 65
...Key/hook switch signal receiving section, 67... Uplink control data sending section, 77... DIU control processor, 83... Downlink data receiving section, 85... Downlink data decoder, 87... DR control section. Applicant's agent Mr. Sato

Claims (1)

[Scope of Claims] 1. A main device having an exchange means, and a telephone terminal connected to the main device so as to be able to make a call through the exchange means;
a data terminal interface unit having an interface for connecting a data terminal and coupling the data terminal to the main device so that the data terminal connected thereto can perform data communication through the exchange means; In a button telephone device in which a control method for a constituent signal line is selected from among a plurality of different methods, the control method is selected in response to a predetermined operation performed on a keypad of the telephone terminal, which is provided on the telephone terminal. function setting data transmitting means for generating function setting data to transmit the generated function setting data to the main device; control method storage means for recognizing and storing a control method; provided in the main device, reading the selected control method from the control method storage means, generating function data indicating the read control method; a function data transmitting means for transmitting to a data terminal interface unit; a function data transmitting means provided in the data terminal interface unit, receiving the function data from the main device, and transmitting the function data to the data terminal interface unit according to the selected control method indicated by the function data; A button telephone device comprising: interface control means for controlling signal lines constituting the interface;