JP2823191B2 - Integrated voice / data switching system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a sound capable of selectively performing communication between voice and data.
Integrated voice / data exchange systems, especially via central office
The present invention relates to a system capable of performing data communication. (Conventional technology) With the progress of office automation in recent years,
It is an audio terminal of a multifunctional telephone etc. for the digital converter.
In addition to connecting to various data terminals, voice and data
Integrated voice / data exchange configured to allow both to communicate
Conversion systems have been developed. Such a system
Digital interface unit for digital exchanges
Computer connected via
For data communication between data terminals such as
External data via an analog line.
Data communication with the terminal was not possible. In recent years like this
Via a modem for modem communication
To connect the data terminal to the digital exchange and
Data communication with external data terminals.
However, in this method, when data communication via the office line,
Selectively connects digital interface unit
And the connection is cumbersome.
Was. Also, if a modem is provided for each data terminal,
There was also a problem that effective utilization could not be achieved. In order to solve this problem, a pooled modem
It was thought. This method is used for digital exchanges.
The modem is pooled (connected) in advance, and the data is
This modem (Puredo model) only when
) To connect the data terminal to the office line via
Multiple data terminals can use modems as needed
Things. In this method, the data terminal is connected first.
Key operation provided on the digital interface unit
External data such as external databases, etc.
By calling the terminal, the communication path (communication
Road). The external data terminal's NCU and model
After confirming the carrier signal tone obtained through the
Switch to data communication by operating the communication start key, etc.
Data communication is performed. However, in such a pooled modem system,
In some cases, the telephone and the pooled modem are independent,
If the telephone calls over the office line, disconnect the call
Data from the data terminals of both parties without having to
Could not move to communication. Therefore, the operator
After performing the call end operation,
If you make an outgoing call at
Rather, it required cumbersome operations. Also, like this
Digital call to start data communication after disconnecting
Trying to make a call by operating the interface unit keys
The pooled modem is busy (in use)
Is in the blocked state, this transmission is disabled and data communication is disabled.
I couldn't do it, so I called the phone again to contact the other party
You have to make more dial calls, more troublesome operation
Needed. In addition, dial operation is performed many times,
There were occasional calls. (Problems to be Solved by the Invention) As described above, according to the conventional method, dialing operation is performed many times.
A troublesome operation of performing a work is required, and incorrect call
Can be used effectively by capturing unnecessary lines
There was no problem. Therefore, solving such problems
The present invention reduces the troublesome dial operation to erase
Integrated voice / data exchange system that also reduces false calls
The purpose is to provide. [Configuration of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides at least one
Telephone, at least one data device, and the telephone
Interface that is connected to the data device.
The face unit and the data device are connected via a central office line.
A modem for use in data communication, and the telephone
A first line circuit for connecting a modem;
A second line circuit for connecting the
At least one trunk circuit connected to the first
In circuit, the second line circuit, and the trunk circuit.
Digital exchange with exchange connection means for exchanging between
Integrated voice / data exchange system with
The telephone sets a data communication by the data device.
Comprising a data communication disclosure request key for instructing start,
The digital exchange sets that the telephone
Connection to the trunk circuit via the switching connection means
And the telephone sets the data communication start request key.
When the start of data communication is instructed, the modem
Detecting means for detecting an empty space, and detecting by the detecting means.
As a result, if the modem is empty, the exchange connection
Connection means, the interface unit corresponding to the telephone
Unit to the trunk circuit via the modem.
The data connected to the interface unit.
To data communication for the station line by
It is characterized by comprising control means. Here, the control means determines that the modem is idle.
The operation of the data communication start request key is ignored.
To return to an external call from the telephone to the office line.
It can be configured to be. Further, each of the modulation and demodulation devices has a different communication performance.
A plurality of modems having different attributes,
The stage is an modem corresponding to the telephone in the modem.
Has attributes that match the communication performance of the interface unit
The control means detects the availability of a modem to
If there is room in the system, control the exchange connection means to
The interface unit through the empty modem
It can be configured to connect to a trunk circuit. (Operation) With such a configuration, communication by the telephone through the office line is possible.
If a data communication start request is made during a call, this
Shift to data communication with data terminals without interruption
Can be (Example) Hereinafter, an example of the present invention will be described in detail. The configuration of the integrated voice / data exchange system in this embodiment
The resulting block diagram is as shown in FIG. In the figure
In addition, the digital exchange 1 is a multifunctional telephone line circuit.
(ELC) 20a, 20b, 20c, digital interface unit
Circuit (DLC) 25a, 25b, trunk circuit for subscriber line
70, modem line circuit 30, typewriter connection
Interface 80, tone generation circuit 3, digital communication circuit
The highway 4 and the time switch 2 that constitute the communication path
It comprises a control circuit and a data highway 5. ELC20a, 20b, 2
0c is the interface to which the multifunction telephone (EKT) 30, 41, 42 is connected.
Voice signal from Face 21, EKT
Convert to digital signal to send to and vice versa
To send digital signal from road highway to EKT
And a control circuit for converting the analog signal to an analog signal.
Various control signals from KET (various switch signals, etc.) on Road 10
Is transmitted via the data highway 5 or, conversely,
Control signals (time slot control signals)
Control circuit (CON
T) 23. DLC25a and 25b are digital interfaces.
Interface to which the face units (DIU) 45 and 46 are connected
Control signal between the source 26 and the control circuit 10.
Control the timing of transmission / reception to / from the highway
A DLC control circuit (CONT) 27 is provided. Further for subscribers
The trunk circuit 70 is an interface connected to the subscriber line 6.
Converter 7 similar to converter 22 of ELC20a, 20b, 20c.
2, and a control signal between the control circuit 10 (an incoming detection signal
Etc.) and the transmission / reception tie of the communication path highway
Control circuit (CONT) 73 for trunking
Have. The line circuit 30 for the modem is connected to the ELC 20a, 20
b, 20c and DLC 25a, 25b.
Pooled modem to the interface 34 to which the switch 31 is connected
60 is connected, DIU 47 is connected to the other interface 35
Have been. This modem line circuit 30, pooled model
A plurality of modem circuits consisting of the
I have. The operation of the digital exchange 1, such as the communication path control, is performed.
Operation control is performed by the control circuit 10, and this control circuit 10 operates.
Operation status of ROM12, EKT and DSU where the operation program was run
It is composed of a RAM 13 for storing data and the like, and a CPU 11.
I have. Next, the configuration of the integrated EKT / DIUs 40a and 40b will be briefly described.
You. The integrated EKT / DIUs 40a and 40b are EKT41, 42 and DIU45,
46 EKT dial keys, various function keys
-41a, 41b, 41c, 42a, 42b, 42c and LED 42d using EKT 41, 42
Voice communication and data using data terminals (DTE) 50a, 50b
It is used in both cases of data communication.
In addition, since the DSUs 45 and 46 do not require keys, the operation of the EKTs 41 and 42 is not required.
Removably attached to the bottom to give a predetermined inclination to the work surface
It is provided in the heel part which can be broken. Fig. 2 for EKT41
As shown in the figure, the audio signal line between
Connected interface 45a and data line are connected
Interface 45b, call circuit 46, handset 47, switch
A speaker 48 and a control circuit 49 are provided.
The function keys 41a, 41b, 41c, the dial key 41e and the
Interface switch 45f
To the digital exchange 1 via the
Lighting control of LED41d based on LED lighting signal from exchange 1
Handset for ringtones, ringtones, busy tones, etc.
Controlling transmission from 47 or speaker 48
It is. The DIU 45 has a digital exchange as shown in FIG.
Interface 51 with exchange 1 and interface with DTE50a
52, ROM53, RAM54, operation program and RAM in ROM53
Control circuit 55 that controls operation based on data in 54, DT
Signal on data line between E50a and digital exchange 1
Is no signal for a predetermined period of time.
And a no-signal detection circuit 56 that makes a determination based on This detection
In the circuit 56, the "H" level signal is data-written when there is no signal.
Timer 57 by using a continuous connection on the
"H" level within the period measured by data, for example, 20 minutes
The detection signal is output to the control circuit 55 due to the
Things. The interfaces 51 and 52 are functionally
As shown, the data line and control line (command line)
) Is selectively switched by the instruction of the control circuit 55.
It is. Next, the operation of such an integrated voice / data exchange system will be described.
Explain the work. First, the RAM 13 in the control circuit 10 is provided in FIG. 4 to FIG.
A table as shown is stored. Fig. 4
Shows the correspondence between EKT41,42 of EKT / DIU40a, 40b and DIU45,46.
It is a table, EKT or DSU and digital exchange 1
These EKTs are connected in order of connected port (hereinafter referred to as PN) numbers.
Alternatively, the DIU or EKT PN corresponding to the DIU PN is stored.
Is done. Figure 5 shows the use of EKT and pooled modem and DIU
It is a table that stores the status, and if it is in use
Is “01” if not used and “00”
You. Fig. 6 shows the PN and DI of the EKT of the other party talking on the EKT.
U is a table that stores the PN of the other party's DIU
“FF” is displayed during calls and when no other party is talking
It is memorized. The table and EKT shown in FIG.
Function settings of various function keys can be changed digitally.
This is performed from a typewriter 9 connected to the exchange 1. Hereinafter, the operation of the present embodiment focusing on the operation of the control circuit 10 will be described.
With reference to the flowcharts shown in FIGS. 8 to 13.
explain. Setting operation When setting various data, first turn on the typewriter 9
Connected to T80, data input is performed. So, control
The circuit 10 first determines whether the typewriter 9 is connected
Is detected (step 100), and it is determined that the connection is established.
And whether "CR" key is input from typewriter 9
Is detected (step 101). No "CR" key input
If it is determined that the port number has been entered,
No.PN, DIU port number PN or EKT various functions
Function command data for the function keys 41a, 41b, 41c
Via INT80 and data highway 5 (step
102). Then, the EKT PN and DIU PN data are entered.
If entered, create a PN-PN table and execute step (10
3), various function keys 41a, 41b, 41c, 42a, 42b, 42c
When a function command is input for the specified EKT
Create a function command table and store it temporarily in the internal area
I do. In the present embodiment, the keys 41a and 42a are
“Start” (DIU key), “Data communication end” for keys 41b and 42b
(DRS key) function is registered. In addition, LED41d, 42d
Two of them are for displaying function of DIU45, 46 and pooled model.
It is used for displaying the status of the program 60. After that, "C
When the "R" key is input (step 104), the control circuit 10
Stores the data temporarily stored in the internal area in the EKT compatible area in RAM13.
PN-PN table (see Fig. 4)
Command table) and command tables in various EKT compatible areas
(Step 105). After entering this "CR" key,
When the "key" key input is made (step 106), control is performed.
The circuit 10 determines that the registration data is invalid and enters the data again.
Capture power (step 102). In this way, various data
The data is registered. Operational operation When the EKT30, 41, 42 goes off-hook, it goes off-hook.
The signal is input to ELC20a, b, c via the data line,
NT23 sends this off-hook signal to control circuit 10.
You. The control circuit 10 controls TSW2 so that off-hook operation is not performed.
To send dial tone to the designated EKT30, 41, 42
When this tone data is transmitted in a certain time slot,
ELC20a, b, c are EKT30,4 after D / A conversion of this tone data
1 and 42, from handset 47 or speaker 48
Make this dial tone sound. After that, the control circuit 10
Is waiting for dial input, and
Data is sequentially taken in (step 201). In this embodiment,
Now press function key 41c before dialing
And specify the extension used. Extension from this dial data
Determine whether the call is a call or an external call (step 202).
In the case of a line call, the control circuit 10 sends a ring tone to the called EKT.
Control TSW2 to send the
Controls TSW2 to send a ringback tone,
EKT off-hook data via data highway 5
When it is obtained, the calling and called EKTs are connected.
To control TSW2. At this time, the extension number
The corresponding LEDs 41d and 42d are turned on (step 207). or,
In the case of an outside line call, substantially the same outside line call processing is performed.
Step 203). For example, the DIU key 41a of EKT41 when calling outside
When pressed (step 204), the control circuit 10
It is determined whether there is a DIU corresponding to 41 (step 21).
1) Then, whether this DIU is in use or empty is shown in Fig. 5.
A determination is made with reference to the table (step 212). At this time,
If there is no corresponding DIU or it is determined that it is in use, D
The input of IU41a becomes invalid and returns to external call processing again.
Step 203). Judge that there is a corresponding DIU and it is empty
Then, the control circuit 10 is used by all pooled modems 60 next.
Refer to the table shown in Fig. 5 to determine whether it is medium or empty.
EKT41 determines if it is in use or empty, and if it determines that it is in use
Control TSW2 to send an overflow tone to
(Step 281) The DRS key 41b is not input from this EKT41.
Until the specified time elapses.
The transmission of the flow tone is continued (steps 282 and 283).
During this time, the line 6 during the call is put on hold. either
If the pooled modem 60 of the
Road 10 turns on LED 41d corresponding to DIU key 41a of EKT41.
Lighting control data is sent to the control circuit 49 via the ELC 20b as much as possible.
You. Therefore, the LED 41d lights up, and the control circuit 10
Cuts the EKT41 call path and replaces the corresponding DIU45
Judging from the table shown in Fig. 4, this DIU45 and modem
The call path connecting the DLC of the line circuit 30
Both the ELC of this line circuit 30 for the modem and the trunk circuit 70
Control TSW2 to set the communication path to connect
Step 215). At this time, the hold state for the line 6 is released.
It is. After that, a “call allowed” signal is sent to DIU45 and DIU47.
Sent over the Ta Highway (steps 216, 217) and D
Data communication between TE50a and external database 8 started
(Step 218). To determine the end of data communication, press the DRS key 41b of EKT41.
(Step 219), the call obtained from the control circuit 55 of the DIU 45
Control that indicates that a no-signal state has passed on the road for a predetermined time or more
Data input (step 220), external database 8 side
Release line (line) (step 221), end from DTE50a
This is performed by inputting a speech signal (step 222).
If it is determined, the control circuit 10 turns off the LED 41d while the EKT 41 is on.
(Step 223), and a ready signal is sent to DIU45 and DIU47.
(Step 224) to make these DIUs 45 and 47 empty.
At the same time, the table shown in FIG. 5 is changed. afterwards,
The communication path is released (step 251), and a call termination process is performed.
In addition, a call termination operation (on-hook) is performed during an outside line call.
(Step 205), the control circuit 10 turns off the LED and opens the communication path
(Step 206). In step 202, it is determined that an extension call has been requested, and
Hold while the extension is in progress.
When the operation is completed and the DIU41a key is operated (step
208, 209), the control circuit 10 starts the data communication operation.
This operation will be described later. Also, when talking on an extension,
When an operation (on-hook) is performed (step 210), control is performed.
The control circuit 10 performs call termination processing such as turning off the LED and opening the communication path.
(Step 206). Next, the DIU keys 41a, 41a and 4
When it is determined that 2a has been pressed, the control circuit 10 performs data communication.
It determines that there is a request and starts the data communication operation. First, the system
Whether the control circuit has DIU45,46 corresponding to the EKT41,42
Is determined (steps 231, 232), and there is no DIU 45, 46 or DIU
When it is determined that 45 and 46 are in use, the process ends. DIU45,5
6 and control circuit 10 when DIUs 45 and 46 are determined to be empty.
Captures the dial data from EKT 41 and EKT (step 23
3). This dial data is the dial number of the called DIU.
Yes, based on this data, the destination DIU is detected, and Fig. 4
And the presence / absence and use / free status of the table in Fig. 5
(Steps 234, 235). Judge that there is no incoming DIU
And the control circuit 10 overflows to the transmitting side EKT 41 and 42
When the DRS keys 41b and 42b of the transmitting EKT 41 and 42 are
(Step 262) or until a predetermined time elapses
(Step 263), the transmission of this overflow tone
continue. If the receiving DIU determines that it is in use,
DR busy tone instead of overflow tone
Operation of the S key 41b, 42b or elapse of a predetermined time
(Steps 271, 272, 273). Empty clothes
When it is determined that there is a receiving DIU, the control circuit 10
The corresponding EKT PN is detected using the table shown in FIG.
(Step 236). Here, the originating DIU is DIU45,
The receiving DIU will be described as DIU46. Next, the control circuit 10
Flashing LED 41d, 42d corresponding to DIU key 41a, 42a of T41, 42
A ring back tone is added to EKT41 and EKT42 is shown.
Sends a ringtone (step 237). And control times
Road 10 sends an incoming signal (incoming command) to DIU 46
(Step 238). Then, the control circuit 55 of the DIU 46
Sends a response signal in response to command input (step
239). However, when the response signal is
If it cannot be obtained even after the time elapses (step 240),
Road 10 returns to the initial state. When a response signal is obtained, the control circuit
10 shifts the blinking LED 41d, 42d of EKT 41, 42 to lighting display.
And set the communication path of DIU45, 46 (step 242), and
Send a "call allowed" signal to each of the 5,46 (steps 243,24)
Four). Upon receiving the transmitted "call allowed" signal,
The control circuit 55 digitally exchanges DTE50a, 50b via INT51, 52
Connect to device 1 and start data communication between these DTEs 50a and 50b
Is performed (step 245). The end of data communication is determined by EKT
Press the DRS keys 41b and 42b of 41 and 42 (step 246),
There is no signal on the communication path obtained from the control circuit 55 of 46.
Input of control data indicating that a certain time has elapsed (step
247), input of the end signal from DTE50a, 50b (step 2
48), and when it is determined that the processing is completed, the control circuit 10 controls the EKT41,
Turn off the LEDs 41d and 42d while 42 is lit (step 249), and
Ready signals are sent to 45 and 46 (step 250).
U45 and 46 are vacant and the table shown in FIG.
change. After that, the call path is opened (step 251),
Perform call termination processing. By the way, the hold operation is performed during an extension call and the DIU
When a key operation is performed, the process moves to the data communication procedure.
The control circuit 10 does not refer to the tables shown in FIGS.
However, it corresponds to the originating EKT (here, EKT41) as described above.
It is determined whether there is a DIU to perform (step 291), and this DIU
It is determined whether or not is busy or empty (step 292). Corresponding
Control if no DIU is available or if the DIU is in use
The circuit 10 invalidates the operation of the DIU key 41a and sets the extension call processing (step
292), that is, continue until the hold operation is released.
You. When determining that there is an empty DIU 45, the control circuit 10
Refer to the table shown in the figure for the EKT of the extension
(Here, EKT42) is detected and then shown in Fig. 4.
DIU corresponding to the KET (incoming
It is detected whether or not there is a side DIU 46 (steps 293 and 29).
Four). If it is determined that there is no incoming DIU, the control circuit 10
Proceed to step 261 to overflow to EKT41.
Out. If it determines that there is a called side DIU,
The circuit 10 determines whether the destination DIU 46 is in use or empty as shown in FIG.
Detecting while referring to the table shown (step 295),
If determined to be in use, proceed to step 271 described above,
Send a busy tone. The incoming DIU is present, and
When it is determined that the state is empty, the control circuit 10 executes the above-described steps.
Step 237 onward to perform data communication operation from call operation
Move to work. In the case of transfer from extension call, hold
Since the hold tone is being transmitted in the state,
Interruption of "beep" instead of sending backgound tone
Tones (short-term special sounds), instead of sending out regular ring tones
I will send out a special continuous sound (special sound) called "Pe"
I'm trying. Also, the data communication in step 245 is started.
If the hold release operation is performed before the
A data communication request by operating the U key 41a becomes invalid, and
The process proceeds to the line communication process (step 207). The control circuit shifts when EKT and DIU are used and when they are empty.
When the state table shown in FIG.
In the case of extension call and data communication, the other party's EKT and D
The PN of the IU is registered in the table shown in FIG.
In addition, the internal and external calls can be made by operating the originating EKT.
Explained the case of shifting from data communication to data communication
However, the same operation is performed by the operation of the extension called side or the external called side EKT.
It is of course possible to shift to data communication. FIG. 14 is a flowchart showing the operation of another embodiment of the present invention.
In the case of the present embodiment, the function of the EKT 41, 42 is used.
One of the operation keys 41c and 42c is a key for the line data communication (D
N key). And this flow
Chart shows the operation from the above-mentioned external call operation to data communication operation.
Only the transition operation is shown. Also, in this embodiment,
Check that all pooled modems 60 are free or in use
Can make a reservation for pooled modem 60
Caught. Hereinafter, the operation of the present embodiment will be described. In addition, here
Let EKT41 be the originating EKT. First, the control circuit 10 controls the LEDs corresponding to all EKT DN keys.
If all pooled modems 60 are in use for 41d and 42d
Only in this case, the LEDs 41d and 42d are lit. Now,
When the DN key of the EKT41 is operated (step 301), the control
Road 10 detects whether all pooled modems are busy or free (
Step 302) If it is determined to be empty, DI corresponding to EKT41
Detects the presence or absence of U
303, 304). And if there is a corresponding DIU 45 and it is empty
When it is determined, the control circuit 10 changes the office line 6 based on the DN key operation.
It captures and enters a state of waiting for dial data input. That
Later, when dial data is input from EKT41, the control
The line 10 performs a transmitting operation to the captured office line 6 (step
305) together with one of the free pooled modems
I do. This reservation is used for each DIU in the table shown in Fig. 5.
Data "10" indicating reservation other than data indicating medium or empty
Is written. The control circuit 10
Whether all pooled modems are in use or reserved by reservation
Detected (step 307), there is no free pooled modem
LEDs 41d and 42d corresponding to the DN key are lit when judged
Let it. Next, the control circuit 10 communicates between the office line 6 and the EKT 41.
A talk path is set (step 309), and the state shifts to a talking state.
If the call is terminated during a call (step 311),
The control circuit 10 executes the second operation to make the reserved pooled modem available.
Data indicating the reservation in the table shown in FIG.
Rewrite to data (step 325), and again all pools
The state of dem is detected (step 326), and an empty pool
If there is at least one dem, turn off LEDs 41d and 42d corresponding to the DN key.
After the light is turned on (step 327), the set communication path is released.
(Step 328). By the way, the DIU key 41a is pressed in a call state
And the control circuit 10 uses the reserved pooled modem
To the same data as in the previous embodiment (steps 214 to 224)
A communication operation is performed (steps 314 to 324). Data communication
When the process is completed, the control circuit 10 executes
Free modem (reserved pooled modem)
Shift (step 325), and the LEDs 41d and 42 corresponding to the DN key
After control of turning off d (steps 326 and 327), the call path is opened.
(Step 328). If all station lines 6 are in use
In this case, although not shown, the control circuit 10 disables the DN key operation.
You. FIG. 15 shows another embodiment of the present invention.
In the example, multiple types with different communication performance are used as pooled modems.
Pooled modems with similar attributes to digital exchanges
And the digital interface unit
Connected to each digital interface unit
Sends and receives attribute information indicating the communication performance of the data terminal,
During data communication between the data terminal and the office line, the data terminal
Select a modem with an attribute that matches the
I am trying to do it. FIG. 15 is basically different from the embodiment shown in FIG.
The reason is that pooled modems are connected to N models with different communication performance.
That is, it is composed of the programs 60a to 60h. In FIG. 15,
Is an integrated telephone / digital interface unit 40a
Only the others are omitted, and the operation explanation is also shown below.
Only the main parts will be shown. In this embodiment, the digital exchange 1 and the digital
Each DIU between the interface unit (DIU) 45
Attribute indicating communication performance of data terminal 50a connected to 45
Sends and receives information, and communicates with the data terminal 50a and the data terminal on the line side.
Attribute that matches the attribute of the data terminal 50a during data communication
Select a pooled modem for data communication
It is composed of In this case, the attribute information indicating the communication performance of the data terminal 50a.
Information is exchanged regularly between exchange 1 and DIU 45.
Is transferred to the exchange 1 when the status information is exchanged. That is, the exchange 1 periodically notifies the DIU 45
Status inquiry command '' for a certain period of time
Activate the Ima, wait for the "response command" from DIU45,
If the response command is transferred within a certain time,
DIU 45 considers it normal and continues call processing.
However, the response command must be transmitted within a certain time.
If so, the DIU 45 is in an abnormal state such as a power-off state.
And call processing is prohibited. And the power supply of DIU45
Turned on and the DIU45 displays the "Channel Reset Request Command
Is transferred, the call processing of the DIU 45 is enabled.
Noh. The exchange 1 periodically monitors the status of the DIU 45 in this manner.
The attribute information of the data terminal 50a is
Response to a status inquiry command from
Switch 1 side when transferring channel reset request command
Is forwarded to FIG. 16 is a flowchart showing a procedure for transferring attribute information in the DIU 45.
It is a flowchart, and in the DIU 45, the data terminal 50a
At the time of connection, the attribute of DIU 45 is
The gender is set by the switch (step 400).
When the power of the DIU 45 is turned on, the DIU 45
This channel sends a channel reset request command.
Exchange by inserting DIU45 attribute information into the tunnel request command
Transfer to the device 1 (steps 401 and 402). After that, call processing is completed and status inquiry from exchange 1
If a reset command is received (steps 403 and 404),
Exchange 1 by inserting the attribute information of DIU45 into the response command
Transfer to In this case, there are four types of attribute information as transmission speeds.
Kind, two types can be considered depending on whether the synchronous method is the asynchronous method.
Response command and channel reset request command
Information indicating these attributes is inserted in the lower 3 bits of the command.
Is entered. FIG. 17 shows a procedure for registering attribute information in the exchange 1.
It is a flowchart, and the communication of n modems 60a-60h
Attribute information indicating the function is maintained when installing each modem 60a-60h
Is registered using a program for use (step 500). one
The attributes of the DIU 45 connected to the data terminal 40a
Is registered by receiving attribute information from DIU45
(Steps 501 and 502). Fig. 18 shows the operation when a station line is transmitted for data communication.
Is a flow chart showing that the digital exchange 1 is EKT4
1 Off-hook operation or dial number (DN) key
-When the operation is detected (step 60
0), after performing the extension connection process,
The dial tone signal is returned to the EKT 41 (step 601). This
The EKT41 operator has now confirmed the dial tone
After that, when the outgoing line dial number is transmitted, the exchange 1
Connection process with the local line, and if the local line responds,
The communication state is set (steps 602 to 603). After this, the data
The data communication key provided in EKT41 to switch to communication
-(DIU key) is pressed, the attributes of DIU45 (namely,
That is, the pooled modem matching the attribute of the data terminal 50a)
Is detected from the attribute information table whether or not exists
(Step 506). Here, pools that match the attributes of DIU45
If a pool modem exists, then the pooled modem
Check whether or not is empty (step 606).
The pooled modem and select a data communication path.
Pooled modems that match the attributes of DIU3
If not, hold the line and overflow to EKT2
(Steps 607 and 608). However, the above pooled modem is used by other data terminals
If it is not empty, the line side is suspended and EKT41
A busy tone is returned (step 610). Therefore,
Data communication until the pooled modem returns to an idle state
The exchange 1 cannot do this,
Dial number (DN) key operation is performed on EKT41
If it is detected that the pool has been touched (step 611), the pool
Until the modem is idle, reconnect EKT41 to the office line.
Return to talking state. However, no dial number (DN) key operation was performed,
End key RLS or data communication end key provided on EKT41
-If DRS is operated (step 612), exchange with EKT41.
Releases the voice communication path with the exchange 1 and ends the call.
613, step 614). As described above, various types of communication functions of the pooled modem 8 are provided.
Connect to the DIU45 by preparing things in advance
The type of communication performance of the data terminal can be increased.
And pooled modems that match the attributes of each data terminal
Is automatically selected and the data communication path with the central office modem
Is formed, so that the mobile station has a mobile phone with various attributes.
May be restricted by the communication partner even if
Data communication can be performed. In the above, the case of transmitting to the office line has been described.
However, when receiving a call from the office line, the office
By providing the U45 phone number in advance,
From the attribute table showing the relationship between the talk number and the attribute of DIU45
Pooled modems with the same attribute can be selected. [Effects of the Invention] As described above, according to the present invention, data is transferred from a call state.
Transfer without disconnecting the call path set to
It is possible to reduce troublesome dial operations
False calls can also be reduced. Also, if a pooled modem is
Or if it is blocked, the data communication start request is invalid.
And it returns to the telephone call, which is convenient for use.
Becomes In addition, the communication performance differs as a pooled modem.
Connecting modems with multiple attributes to a digital switch
, Digital exchange and digital interface unit
Attribute information indicating the communication performance of the data terminal
Data communication between the data terminal and the office line.
Data communication by selecting a modem with an attribute that matches the attribute of the terminal
Data with various types of communication performance.
Data terminals can be connected to digital exchanges.
In addition, there are modems with various types of communication performance on the office line side.
Even if you are present, there is no restriction on the communication partner
Data communication can be performed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a block diagram of an integrated telephone shown in FIG. 1, a block diagram of a telephone of a data interface unit, FIG. Is a block diagram of the data interface of the integrated telephone / data interface unit shown in FIG. 1, and FIGS. 4 to 6 are RAs shown in FIG.
FIG. 7 shows a data table stored in M, and FIG.
8 to 13 are flowcharts for explaining the data communication operation of the embodiment shown in FIG. 1, and FIG. 14 is another flowchart showing the data communication operation of the embodiment shown in FIG. Flow chart for explaining the embodiment, FIG. 15 is a block diagram showing another embodiment of the present invention,
16 is a flowchart showing a procedure for transferring attribute information of the data terminal in the embodiment of FIG. 15, FIG. 17 is a flowchart showing a procedure for registering attribute information in the embodiment of FIG. 15,
FIG. 18 is a flowchart showing the operation of the digital exchange at the time of originating a line in the embodiment of FIG. 1 ... Digital exchange, 6 ... Office line, 40a, 40b ... Integrated telephone / data interface unit, 30,41,42 ...
… Multi-function telephone, 45,46,47 …… Data interface unit, 41a, 42a …… Data communication start key, 41b, 42b ……
Data communication end key, 41c, 42c ... function key, 41d, 42d ... LED, 50a, 50b ... data terminal.

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) H04M 11/00 H04M 3/00 H04Q 11/00

Claims (1)

(57) [Claims] At least one telephone, at least one data device, an interface unit provided for the telephone and connected to the data device, and used when the data device performs data communication via a central office line A first line circuit for connecting the telephone, a second line circuit for connecting the modem, at least one trunk circuit connected to the office line, An integrated voice / data exchange system comprising: a first line circuit; a second line circuit; and a digital exchange having an exchange connection means for exchanging between the trunk circuit and the trunk circuit. A data communication disclosure request key for instructing a start of data communication, wherein the digital exchange comprises: Detecting means connected to the trunk circuit via the switching connection means, and when the telephone is instructed to start data communication by the data communication start request key, detecting a vacancy of the modem device, As a result of the detection by the detecting means, when the modem is empty, the switching connection means connects the interface unit corresponding to the telephone to the trunk circuit via the modem and is connected to the interface unit. An integrated voice / data exchange system, comprising: control means for shifting to data communication with the office line by the data equipment. 2. 2. The control unit according to claim 1, wherein, when the modem is not idle, the operation of the data communication start request key is ignored and the telephone returns to the outside line communication with the central office line. Integrated voice / data exchange system. 3. The modem includes a plurality of modems having different attributes having different communication performances, and the detecting means includes a modem having an attribute matching the communication performance of an interface unit corresponding to the telephone among the modems. Detecting a vacancy, and when the modem has a vacancy, controlling the switching connection means to connect the interface unit to the trunk circuit via the vacant modem. Item 2. An integrated voice / data exchange system according to Item 1.