JPS6367999A - Incoming call display system - Google Patents

Abstract

PURPOSE:To improve a service by setting a multifunction telephone set to a calling state by generating a ring tone with the multifunction telephone set to display an incoming call to an user when an incoming call is generated to the multifunction telephone set after a ring off detection means detects a ring off. CONSTITUTION:An automatic exchange 3, after the ring off detection means 300 detects the ring off, when the multifunction telephone set 8 has newly receives the incoming call, sets the multifunction telephone set 8 to the call state irrespective of a hook state. A transmitter 803, a microphone 804 and a receiver 805 and a speaker 806 are connected to a speech line 91 through a two wire/four wire converting circuit 801 and a communication circuit 802 and a communication is executed by a sound signal transmitted and received via the communication line 91. A control circuit 808 is connected to a control line 92 through a line terminal circuit 807. The control circuit 808, when a ring tone transmitting control signal is transferred from the automatic exchange 3 via the control line 92, drives a ring tone generating circuit 809 to transmit the ring tone from the speaker 806 and display the incoming call to the user.

Description

[Detailed Description of the Invention] [Summary] In an automatic exchange that accommodates a multi-function telephone that can generate a ring tone regardless of the hook state of the transmitting/receiving section, it is detected that the multi-function telephone has ended a call in an off-footer state. Then, when a new call arrives, the multifunction telephone generates a ringing tone, thereby making it possible to display the incoming call on the multifunction telephone in an off-footer state.

[Industrial application field]

The present invention provides an automatic switching system that accommodates a multi-function telephone that can generate a ringing tone regardless of the hook state of the transmitter/receiver.
The present invention relates to an incoming call display method that can generate a ringing tone when a call arrives at a multifunction telephone that is left in an off-hook state after a call ends.

[Conventional technology]

FIG. 4 is a diagram showing an example of a conventional automatic switchboard, and FIG. 5 is a diagram showing an example of the telephone set in FIG. 4.

In FIG. 4, a telephone 1 is accommodated in a subscriber circuit (SLC) 4 of an automatic exchange 3 via a two-wire subscriber cable 2. In FIG.

In FIG. 5, the telephone 1 is in an idle state, and the transmitter 1
5 and the handset 16 are in the on-footer state,
Since the software switches 13 and 14 are in the recovery state,
Only a ringing tone generating section consisting of a capacitor 11 and a bell 12 is connected to the two-wire subscriber line 2. In this state, when a calling signal arrives from the two-wire subscriber line 2, the bell 12 of the ringing tone generator is driven to generate a ringing tone and indicate the incoming call.

Further, when the telephone 1 is in a talking state and the transmitter 15 and receiver 16 are in an off-footer state, the footer switch 13
and 14 are in operation, and a direct current loop circuit is connected to the two-wire subscriber line 2 in parallel to the ringing tone generator via a transmitter 15, and a receiver 16 is connected via a capacitor 17. . In such a state, even if a ringing signal arrives from the two-wire subscriber line 2, the signal is shunted to the low-impedance transmitter 15 and the bell 12 is not sufficiently driven, so that no ringing tone is generated.

On the other hand, in the automatic exchange 3, a monitoring section (S) 41 in the subscriber circuit 4 monitors the hook state of the telephone ia1 and transmits it to the central control unit (CC) 6.

, the central control device 6 analyzes the hook state of the telephone 1 transmitted from the monitoring unit 41, determines that the telephone 1 is in an idle state when the analysis result indicates an on-footer, and stores the main memory (MM>7). If the idle information @IB stored in the area 71 of determines that the telephone 1 is in a busy state, and sets the idle information IB stored in the area 71 in the main memory 7 corresponding to the device number EN of the subscriber circuit 4 to a blocked state (for example, a logic “ 0”).

Further, when an incoming call to the telephone 1 occurs, the central control unit 6 refers to the area 71 in the main storage 7 and stores the blockage information IB corresponding to the equipment number EN of the subscriber circuit 4 that accommodates the telephone 1. When it detects that the telephone set is set to logic "L", it determines that the telephone set 1 is in an idle state, transmits a calling signal sending instruction to the subscriber circuit 4, and calls the calling section (inside the subscriber circuit 4).
R) A calling signal is sent from 42 to the two-wire subscriber line 2.

Note that when an incoming call to the telephone 1 occurs, the central control unit 6 refers to the area 71 in the main memory 7 and stores the blockage information IB corresponding to the equipment number EN of the subscriber circuit 4 that accommodates the telephone. When detecting that is set to logic “0”,
It is determined that the telephone set 1 is not in an idle state, and busy processing is executed without transmitting a calling signal sending instruction to the subscriber circuit 4.

[Problem that the invention seeks to solve]

As is clear from the above explanation, conventional telephones can only generate a ring tone when they are in the on-footer state, and cannot generate a ring tone when they are in the off-footer state. If you forget and telephone 1 continues to be off-hook, it will not be possible to generate a ring tone even when a new incoming call occurs, and even if telephone 1 is in a no-call state, it will not be possible to generate a ring tone. could not be displayed to users, which could reduce service quality.

[Means for solving problems]

FIG. 1 is a diagram showing the principle of the present invention.

In FIG. 1, 3 is an automatic switchboard, 8 is a multifunction telephone,
100 is a transmitting/receiving unit that controls calls of the multifunction telephone 8; 200;
is a ring tone generator that controls the call display of the multi-function telephone 8.

Note that the multifunction telephone 8 can drive the ringing tone generating section 200 regardless of the hook state of the transmitting/receiving section 100.

Reference numeral 300 denotes call end detection means, which is provided in the automatic exchange 3 according to the present invention, and detects that the multifunction telephone 8 has ended a call while in an off-hook state.

[Effect]

When a new call arrives at the multifunction telephone 8 after the end of call detection means 300 detects the end of the call, the automatic exchange 3 sets the multifunction telephone 8 to a ringing state regardless of the hook state.

Therefore, even if a new incoming call occurs while the multifunction telephone is left in the off-footer state after a call ends, the automatic exchange will set the multifunction telephone to the ringing state, and the multifunction telephone will ring. It is now possible to display incoming calls to users, improving serviceability.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a diagram showing an automatic exchange according to an embodiment of the present invention, and FIG. 3 is a diagram showing an example of the multifunction telephone in FIG. 2. Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 2, a call end determination section 61 and a response determination section 62 are provided in the central control unit (CC) 6 as end of call detection means 300, and an area 71 in the main memory (MM) 7 is provided.
Hook information HK indicating the hook status of the accommodated multifunction telephone is stored in correspondence with the device number EN of each multifunction telephone subscriber circuit (KLC) 10.

In FIG. 2, a multifunction telephone (KTU) 8 is accommodated in a multifunction telephone subscriber circuit 10 via a four-wire subscriber line 9. In FIG. The four-wire subscriber line 9 includes a two-wire communication line 91 for transmitting voice signals and a two-wire control line 92 for transmitting various control signals and monitoring signals.

In FIG. 3, the communication line 91 includes a two-wire and four-wire conversion circuit 8.
A transmitter 803 and a microphone 804, as well as a handset 805 and a speaker 806 are connected through a telephone line 91 and a telephone line 91, and a telephone conversation is carried out using audio signals transmitted and received via a telephone line 91.

On the other hand, the control circuit 808 is connected to the control m92 via the line termination diagram i1'13807.

Control circuit 808 connects automatic exchange fi via control line 92.
When the control signal for sending out a ringing tone is transmitted from the device 3, the ringing tone generating circuit 809 is driven to cause the speaker 806 to output a ringing tone and to display an incoming call to the user.

The control circuit 808 also detects on-hook and off-hook states of the hook switch 810 and
7 and a control line 92 to transmit a hook state monitoring signal to the automatic exchange 3.

Note that when the multifunction telephone 8 receives a ringing tone sending control signal arriving from the control line 92, it can drive the ringing tone generation circuit 809 regardless of the hooked state of the hook switch 810.

Furthermore, when various lamp energizing control signals or character display control signals are transmitted from the automatic exchange 3 via the control line 92, the control circuit 808 turns on the corresponding lamps 81.
2 is energized to light up or display a desired character on the display 813, and when the operation of the key 811 is detected, a key operation detection signal is sent to the automatic exchange 3 via the line termination circuit 807 and the control line 92. to communicate.

On the other hand, in the automatic exchange 3, the multifunction telephone subscriber circuit 10 receives the hook status monitoring signal transmitted from the multifunction telephone 8 via the control line 92, and transmits it to the central control bag W6.

The central control bag W6 analyzes the hook state monitoring signal transmitted from the multifunction telephone subscriber circuit 10, and generates hook information H'K indicating the analysis result (for example, when it is determined that the hook state monitoring signal indicates an on-hook state). to logic “1”,
If it is determined that the off-hook state is indicated, the logic value is set to "0") is stored in the area 71 in the main storage device 7 in correspondence with the device number EN of the multifunction telephone subscriber circuit 10.

If the functional telephone 8 is in the off-hook state during a call this winter, the idle information IB corresponding to the device number EN of the multifunctional telephone subscriber circuit 10 in the area 71 in the main memory 7 is in the blocked state (logical " 0”), and the hook information HK
is set to an off-footer state (logic "0").

It is assumed that the call on the multi-function telephone fi8 ends in this state, but the multi-function telephone fi8 is left in an off-hook state due to the user forgetting to operate it.

The call end determination unit 61 in the central control device 6 determines whether the call is in the end state even though the multifunction telephone 8 is in the off-hook state, by detecting, for example, the recovery state of the opposite telephone that is connected to the multifunction telephone 8. If it is determined that this has occurred, it transmits an instruction to send out a recovery control signal to the multifunction telephone subscriber circuit 10, causes the multifunction telephone 8 to send out a recovery control signal via the control line 92, and also sends a recovery control signal to the main storage device. The vacancy information IB corresponding to the device number EN of the multifunction telephone subscriber circuit 10 in the area 71 within 7 is updated to the vacant state (logic "1").

In the multifunction telephone 8, the control circuit 808 is connected to the control line 9.
When the recovery control signal arriving from 2 is received via the line termination circuit 807, recovery processing is executed as necessary.

Note that since the hook switch 81° is still set to the off-footer state, the hook state monitoring signal transmitted from the control circuit 808 to the automatic exchange 3 via the line termination circuit 807 and the control 1192 is in the off-hook state (logic "O"). ”), and the area 7 in the main storage device 7
1, the hook information HK corresponding to the device number EN of the multifunction telephone subscriber circuit 1o is still in an off-footer state (
It is set to logic "O").

In this state, when a new incoming call occurs to the multifunction telephone 8, the central controller 6 stores the area 71 in the main memory 7.
Referring to the device number E of the subscriber circuit 10 for multi-function telephone
When it is detected that the blockage information 1B corresponding to N is set to logic "1", it is determined that the multifunction telephone 8 is in the idle state, and the blockage information IB is set to the blockage state (logic "0"). At the same time, the multifunction telephone subscriber circuit 10 is instructed to send out a ringing tone sending control signal, causes the control line 92 to send out a ringing tone sending control signal, and the response determining unit 62
The hook information HK corresponding to the multifunction telephone subscriber circuit 10 in the area 71 in the main storage device 7 is monitored.

In the multi-function telephone faB, when the control circuit 808 receives the ring tone sending control signal transmitted from the automatic exchange 3 via the control line 92 via the line termination circuit 807, it drives the ring tone generating circuit 809. Then, the speaker 806 outputs a ringing tone and displays the incoming call to the user.

When the user of the multifunction telephone 8 notices the ringing tone and learns that the hook switch 810 is in the off-hook state, he sets the hook switch 810 once to the on-hook state and then sets it to the off-hook state again.

The control circuit 808 detects that the hook switch 810 is once set to the on-footer state and then set to the off-hook state again, and disconnects the line termination circuit 807 and the control line 92.
After transmitting a hook state monitoring signal indicating an on-hook state to the automatic exchange 3 via , a hook state monitoring signal indicating an off-hook state is transmitted again.

In the automatic exchange 3, the subscriber circuit 1 for multi-function telephones
0 transmits the hook state monitoring signal arriving from the control line 92 to the central controller 6 as described above, and the central controller 6 analyzes the hook state monitoring signal transmitted from the multifunction telephone subscriber circuit 10. Hook information HK indicating the result is stored in the area 71 in the main storage device 7 in correspondence with the device number EN of the multifunction telephone subscriber circuit 10.

On the other hand, the response determination unit 62 that monitors the hook information HK in the area 71 in the main memory M7 detects that the hook information HK corresponding to the device number EN of the multifunction telephone subscriber circuit 10 changes from the off-footer state to the on-footer state once. After that, when it is detected that the multifunction telephone 8 has returned to the off-hook state, it is determined that the multifunction telephone 8 that is currently calling has answered, and the incoming call to the multifunction telephone 8 is set to the talking state, and the multifunction telephone subscriber circuit 10 and causes a control signal for stopping the ringing tone to be sent to the control line 92.

In the multifunction telephone 8, the control circuit 808 is connected to the control line 9.
When the ring tone transmission stop control signal arriving from 2 is received via the line termination circuit 807, the ring tone generating circuit 809 is stopped and the ring tone being transmitted from the speaker 806 is stopped.

Thereafter, when the automatic exchange 3 transmits various control signals for setting the multi-function telephone 8 to a call state, the control circuit 808 that has received the various control signals sets the multi-function telephone 8 to a call state, and the user receives an incoming call. You will be available to answer calls.

As is clear from the above description, according to the present embodiment, even if the multifunction telephone 8 is left in the off-footer state after the end of a call, the automatic exchange 3 will automatically switch the multifunction telephone 8 when a new incoming call occurs. 8 to send out a ringtone,
The user becomes available to answer incoming calls.

Note that FIGS. 2 and 3 are only one embodiment of the present invention, and for example, the multifunction telephone 8 is not limited to one that can be accommodated in the automatic exchange 3 via a four-wire subscriber line 9. Many other modifications may be considered, such as accommodating the communication path and the control signal path by a two-wire subscriber line that is time-division multiplexed, but the effects of the present invention do not change in either case. . It goes without saying that the multifunctional telephone 8 to which the present invention is applied is not limited to that shown in the drawings.

〔Effect of the invention〕

As described above, according to the present invention, even if a new incoming call occurs while the multi-function telephone is left in the off-footer state after a call ends, the automatic switch will call the multi-function telephone. If the multi-function telephone is set to the current state, a ring tone can be generated and displayed to the user, improving serviceability.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the principle of the present invention, FIG. 2 is a diagram showing an automatic exchange according to an embodiment of the present invention, FIG. 3 is a diagram showing an example of the multifunction telephone in FIG. 2, and FIG. FIG. 5 is a diagram showing an example of a conventional automatic switchboard, and FIG. 5 is a diagram showing an example of the telephone set in FIG. 4. In the figure, 1 is a telephone, 2 is a two-wire subscriber line, 3 is an automatic exchange, 4 is a subscriber circuit (SLC), 5 is a network (NW), 6 is a central control unit 1 (CC), 7 is the main memory (MM), 8 is the multifunction telephone (KTU), 9 is the four-wire subscriber line, and 10 is the multifunction telephone subscriber circuit (KTU).
LC), 11 and 17 are capacitors, 12 is a bell,
13. 14 and 81042 are calling units (R), 61 is a call termination determination unit, 62 is a response determination unit, 71 is an area, 91 is a communication line, 92 is a control line, 100 is a transmitting/receiving unit, and 200 is a ringing tone generation 300 is a call end detection means, 801 is a two-wire/four-wire conversion circuit, 802 is a speech circuit, 804 is a microphone, 8
06 is a speaker, 807 is a line termination circuit, 808 is a control circuit, 809 is a ringing tone generation circuit, 811 is a key, 812
is the lamp, 813 is the display, external: n

Claims (1)

[Scope of Claims] In an automatic exchange (3) accommodating a multifunction telephone (8) capable of driving a ringing tone generating section (200) regardless of the hook state of the transmitting/receiving section (100), the multifunction telephone ( 8)
call end detection means (300) for detecting that the call ends as soon as the telephone is off-hook, and after the call end detection means (300) detects the end of the call, an incoming call to the multifunction telephone (8) is detected. An incoming call display method is characterized in that the multifunction telephone (8) is set to a ringing state when a call occurs.