JPH0775378B2 - Digital button telephone device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital key telephone device that performs data communication within the device and data communication via an external line.

2. Description of the Related Art FIG. 4 shows a conventional digital button telephone device, particularly a main device, in which 1 is an external line interface (I / F) for detecting an incoming external line, forming a call, sending a dial signal, etc. A circuit 2 is a hybrid circuit for converting a call from 2 lines to 4 lines and 4 lines to 2 lines, and 3 is an AD for converting a call digital signal into an analog signal and a call analog signal into a digital signal. The conversion circuit 4 receives the call digital signal from the A / D conversion circuit 3 by using the call highway HW ₁
Is a highway I / F circuit that sends the call digital signal of a predetermined time slot of the call highway HW ₁ to the A / D conversion circuit 3.

Reference numeral 7 is a modem circuit for modulating the data to be transmitted and demodulating the received data. Reference numeral 8 is for transmitting the data signal from the modem circuit 7 to a predetermined time slot of the data highway HW ₂ and also for the data highway HW 2. A highway control I / F circuit that extracts a data signal from a predetermined time slot ₂ and sends it to the modem circuit 7, and 10 is an analog switch that switches according to a data communication state and a call state under the control of a microcomputer (NPU) 9. It is a department.

The analog switch section 10 is an analog switch 10a for turning on / off a sound signal from the outside line to the AD conversion circuit 3.
An analog switch 10b for turning on / off a voice signal from the A / D conversion circuit 3 to the outside line, an analog switch 10c for turning on / off a data signal from the outside line to the modem circuit 7, and a data signal from the modem circuit 7 to the outside line. It has an analog switch 10d for turning on / off.

The analog switch unit 10 is controlled by the NPU 9 so that the analog switches 10a and 10b are on and the analog switches 10c and 10d are off in a normal state of a call.

The external line I / F circuit 1, the hybrid circuit 2, the A / D conversion circuit 3, the highway I / F circuit 4, the modem circuit 7, the highway control I / F circuit 8, and the analog switch unit 10 are the external line circuit units of the main device. This external line circuit section is provided corresponding to the number of external lines “1” to, but the modem circuit 7, the highway control I / F circuit 8 and the analog switch section 10 are provided only in a specific external line circuit section. Good.

Also, 5a, 5b ~ is a highway control I / O that transmits / receives a voice signal and a data communication signal to / from a predetermined time slot of the call highway HW ₁ and the data highway HW ₂ , respectively.
F circuit, 6a, 6b ~ is highway control I / F circuit 5a,
5b ~ Voice signal, data communication signal and control signal from NPU9 are serially converted to digital button telephones TELa, TEL
b to personal computers Pa and Pb, and
A data communication control I / F circuit for parallel-converting the signals from the digital button telephones TELa, TELb to personal computers Pa, Pb and sending them to the highway control I / F circuits 5a, 5b to NPU9.

In addition, the highway control I / F circuits 5a and 5b and the data communication control I / F
The F circuits 6a and 6b-are provided corresponding to the numbers of the extensions "10" and "11".

Next, the operation of the above conventional example will be described.

When the external line "1" is specified via the external line key (not shown) of the digital button telephone TELa and the telephone number of the receiving side (not shown) is entered via the dial key (not shown), the key data is the main device. N via the data communication control I / F circuit 6a
Sent to PU9.

NPU9 is a digital button telephone TE
By connecting La to the external line “1” and controlling the external line I / F circuit 1, the external line “1” is supplemented and a dial signal corresponding to the dial number is transmitted. In this case, when the other party responds, a call path with the digital key telephone TELa is formed.

In this state, when the data communication key (not shown) of the digital key telephone TELa is pressed, the key data is sent to the NPU9 of the main unit through the same route as above, and the NPU9 is the data communication control I / F circuit 6a. Control and also analog switch 10
The analog switch unit 10 is controlled so that a and 10b are turned off and analog switches 10c and 10d are turned on.

Next, in the digital key telephone TELa, which corresponds to 106 signals in CCITT V.24, a CS signal indicating that transmission is possible is sent to the personal computer Pa after a lapse of a predetermined delay time, and the personal computer Pa is connected via the outside line “1”. Data communication can be performed.

Note that CCITT V.24 105 signal (transmission request signal) is indicated as RS signal. On the other hand, when data communication is performed between the personal computers Pa and Pb, the digital key telephone TE
When the data communication path between La and TELb is formed, the digital button telephone TELa sends the CS signal to the personal computer Pa after the lapse of the predetermined delay time described above, and the personal computer Pa communicates with the personal computer Pb. It can be carried out.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the above-mentioned conventional digital button telephone device, since the delay time for transmitting the CS signal is preset for data communication via an external line, the data in the device is There is a problem that communication start is delayed.

In view of the above problems, it is an object of the present invention to provide a digital button telephone device capable of starting data communication in the device and data communication via an external line with optimum delay times.

Means for Solving the Problems In order to solve the above problems, the present invention relates to a case where a personal computer that performs data communication is connected to a digital button telephone, and the personal computer performs data communication with another personal computer. The CS signal delay time and the CS signal delay time when the personal computer performs data communication via an outside line are sent out according to each data communication, and the digital button telephone sets the CS signal according to the delay time. It is characterized in that it is configured to be sent to a computer.

The present invention has the above-described configuration, and since the CS signal is transmitted to the personal computer with a delay time corresponding to the data communication in the device and the external line through the external line, the personal computer can optimize each data communication. It can start with a delay time.

EXAMPLES Examples of the present invention will be described below with reference to the drawings. First
FIG. 1 is a block diagram showing an embodiment of a digital button telephone device according to the present invention, particularly a main device, and FIG. 2 is a block diagram showing an embodiment of a digital button telephone TEL connected to the main device of FIG. FIG. 3 is a flow chart for explaining the operation of the main device of FIG. 1, particularly the NPU 9, and in FIG. 1, the same components as those shown in FIG. 4 are designated by the same reference numerals. .

In FIG. 1, reference numeral 1 is an external line interface (I / F) circuit for detecting an incoming external line, forming a call, sending a dial signal, etc.
A hybrid circuit for converting from 4 lines to 2 lines, 3 is an A-D conversion circuit for converting a call digital signal into an analog signal and 4 is an A-D conversion circuit for converting a call analog signal into a digital signal.
Or sends a call for digital signal from D conversion circuit 3 into a predetermined time slot of the call for highways HW _1, sends a call for digital signals of a predetermined time slot of the call for highways HW ₁ to A-D converter circuit 3 Highway I / F circuit.

Reference numeral 7 is a modem circuit for modulating the data to be transmitted and demodulating the received data. Reference numeral 8 is for transmitting the data signal from the modem circuit 7 to a predetermined time slot of the data highway HW ₂ and also for the data highway HW 2. A highway control I / F circuit that extracts a data signal from a predetermined time slot ₂ and sends it to the modem circuit 7, and 10 is an analog switch that switches according to a data communication state and a call state under the control of a microcomputer (NPU) 9. The NPU9 is
As will be described later, the entire digital key telephone system is controlled.

The analog switch section 10 is an analog switch 10a for turning on / off a sound signal from the outside line to the AD conversion circuit 3.
An analog switch 10b for turning on / off a voice signal from the A / D conversion circuit 3 to the outside line, an analog switch 10c for turning on / off a data signal from the outside line to the modem circuit 7, and a data signal from the modem circuit 7 to the outside line. It has an analog switch 10d for turning on / off.

The analog switch unit 10 is controlled by the NPU 9 so that the analog switches 10a and 10b are on and the analog switches 10c and 10d are off in a normal state of a call.

The external line I / F circuit 1, the hybrid circuit 2, the A / D conversion circuit 3, the highway I / F circuit 4, the modem circuit 7, the highway control I / F circuit 8, and the analog switch unit 10 are the external line circuit units of the main device. This external line circuit section is provided corresponding to the number of external lines “1” to, but the modem circuit 7, the highway control I / F circuit 8 and the analog switch section 10 are provided only in a specific external line circuit section. Good.

19 is a program board for inputting the optimum delay time of the CS signal during data communication via an external line and the optimum delay time of the CS signal during intra-device data communication, and 20 is input via the program board 19. This is a memory that stores the delay time of each RS signal.

Also, 5a, 5b ~ is a highway control I / O that transmits / receives a voice signal and a data communication signal to / from a predetermined time slot of the call highway HW ₁ and the data highway HW ₂ , respectively.
F circuit, 6a, 6b ~ is highway control I / F circuit 5a,
5b ~ Voice signal, data communication signal and control signal from NPU9 are serially converted to digital button telephones TELa, TEL
b to personal computers Pa and Pb, and
A data communication control I / F circuit for parallel-converting the signals from the digital button telephones TELa, TELb to personal computers Pa, Pb and sending them to the highway control I / F circuits 5a, 5b to NPU9.

In addition, the highway control I / F circuits 5a and 5b and the data communication control I / F
The F circuits 6a and 6b-are provided corresponding to the numbers of the extensions "10" and "11".

FIG. 2 shows a digital key telephone TEL connected to the main unit of FIG. 1, and 11 is a D-type telephone that converts the serial signals of the voice signal, the data communication signal, and the control signal from the main unit to D-, respectively. A conversion circuit 12, data communication I / F circuit 1
4. A data communication control I / F circuit that sends the data to the microcomputer (APU) 18, converts the parallel signal into a serial signal, and sends the serial signal to the main device.

Reference numeral 12 denotes a DA conversion circuit for converting the voice signal from the data communication control I / F circuit 11 into an analog signal, and converting the analog signal into a digital signal and sending the digital signal to the data communication control I / F circuit 11, 13
Converts the voice signal from the D-A conversion circuit 12 into voice,
Further, it is a handset for transmission / reception that converts voice into a voice signal and sends it to the DA conversion circuit 12.

14 is a data communication I / F that converts the data communication signal and connects the data communication control I / F circuit 11 and the RS-232C I / F circuit 15.
The RS-232C I / F circuit is a data communication I / F circuit 14
And the personal computer P, and requests the data communication I / F circuit 14 and the APU 18 to send out a CS signal (A in the figure).

Reference numeral 16 is a dial key for sending a dial, an outside line key for designating and displaying an outside line, a key having a data communication key for performing data communication, etc., 17 is a hook switch operated by on-hook / off-hook of the handset 13, and 18 Is
This digital button controls the entire telephone, especially the CS signal.
Personal computer P via RS-232C I / F circuit 15
It is an APU that is sent to (shown in B in the figure).

Next, the operation of the embodiment having the above configuration will be described for the case where data communication is performed from the personal computer Pa via the outside line "1".

When the outside line "1" is designated by the outside line key of the key 16 of the digital button telephone TELa and the telephone number of the receiving side is input through the dial key, the APU18 sends the key data to the data communication control I / F circuit 11, the main unit. Device data communication control I / F circuit
Send to NPU9 via 6a.

NPU9 is a digital button telephone TE
By connecting La to the external line “1” and controlling the external line I / F circuit 1, the external line “1” is supplemented and a dial signal corresponding to the dial number is transmitted.

In this case, when the other party answers, the digital key telephone
A communication path with TELa is formed [Step (ST) in Fig. 3]
1].

In this state, when the data communication key of the key 16 of the digital button telephone TELa is pressed, the key data is sent to the NPU 9 of the main device through the same route as above.

The NPU 9 reads the delay time for the external line data communication of the CS signal of the memory 20 and the APU via the data communication control I / F circuit 6a and the data communication control I / F circuit 11 of the digital button telephone TELa.
It is sent to 18 (ST2 → ST3 → ST4 → ST6 shown in FIG. 3), and analog switches 10a and 10b are turned off and analog switches 10c and 10d are turned on.
Controls 0 to form a data communication path.

In digital button telephone TELa, APU18 is RS-232CI / F
When the RS signal is requested from the circuit 15, the CS signal is sent to the personal computer Pa via the RS-232C I / F circuit 15 after the delay time from the main device has elapsed.

Therefore, the personal computer Pa is in a data communication state with the partner computer via the outside line "1".

Next, a case where data communication is performed between the personal computers Pa and Pb will be described.

When the extension number “11” of the digital button telephone TELb is input via the dial key of the key 16 of the digital button telephone TELa, the APU 18 transmits the key data to the data communication control I / F.
NPU via the circuit 11 and data communication control I / F circuit 6a of the main unit
Send to 9.

The NPU9 uses the key data to drive the highway control I / F circuit 5
a, 5b and the data communication control I / F circuits 6a, 6b are controlled to form a communication path between the digital button telephone TELa and the digital button telephone TELb. When the digital button telephone TELb responds, the call between the two digital button telephones TELa, TELb becomes possible [step (ST) 1 in FIG. 3].

In this state, when the data communication key of the key 16 of the digital button telephone TELa is pressed, the key data is sent to the NPU 9 of the main unit through the same route as above, and the NPU 9 uses the key data to drive the highway control I / F. Controls circuits 5a and 5b and data communication control I / F circuits 6a and 6b, and digital button telephone TELa
And a data communication path between the digital button telephone TELb.

The NPU 9 also reads the delay time for in-device data communication of the CS signal of the memory 20 and sends it to the APU 18 via the data communication control I / F circuit 6a and the data communication control I / F circuit 11 of the digital button telephone TELa. (ST2 → ST3 → ST5 → ST shown in Fig. 3
6), Digital button telephone TELa, APU18, RS-23
2 When the CI signal is requested from the CI / F circuit 15, the CS signal is transmitted to the personal computer Pa via the RS-232C I / F circuit 15 after the lapse of the delay time from the main device.

Therefore, the personal computer Pa is in the data communication state with the personal computer Pb via the data communication path.

As described above, the present embodiment is effective in shortening the actual communication time of data communication when the CS signal is independently transmitted by the digital key telephone. Also, the personal computer
After sending the RS signal (transmission request signal), wait for the CS signal (transmission enable signal) to start actual communication, so if you operate with the optimum CS delay time for the outside line and the system extension, data communication of the system extension The time can be shortened. Particularly, in the present embodiment, this effect is remarkable in the case of half-duplex communication.

In the above embodiment, the optimum delay time of the CS signal is input by the program board 19, but it may be input by the key 16 of the digital button telephone TEL. .

As described above, according to the present invention, since the CS signal is sent to the personal computer with a delay time corresponding to the data communication in the device and the data communication via the external line, the personal computer is Data communication can be started with an optimum delay time.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a digital button telephone device according to the present invention, particularly a main device, and FIG. 2 is a block diagram showing an embodiment of a digital button telephone connected to the main device of FIG. FIG. 3 and FIG. 3 are flowcharts for explaining the operation of the main unit of FIG. 1, especially the NPU, and FIG. 4 is a block diagram showing a conventional example. 9 ... Microcomputer (NPU), 15 ... RS-232C
Interface circuit, 18 ... Microcomputer (APU), 19 ... Program board, 20 ... Memory, TE
L, TELa, TELb …… Digital button telephone, P, Pa, Pb …… Personal computer.

Claims (1)

[Claims] 1. A digital button telephone connected to a plurality of digital button telephones to which personal computers are respectively connected and a personal computer performing data communication, whereas the personal computer is connected to another digital button telephone. And a main device that sends the CS signal delay time when performing data communication in the system and the CS signal delay time when the personal computer performs data communication via an external line in accordance with each data communication. The digital button telephone set is characterized in that the digital button telephone set sends a CS signal to a personal computer according to the delay time sent from the main unit, and the personal computer starts data communication by the CS signal.