JPH05130663A - Key telephone system - Google Patents

Abstract

PURPOSE:To individually call a required speaker in a wide range without being known by a third person and without giving a trouble causing noise to the third person. CONSTITUTION:This key telephone system is provided with a transmitter 71 for wirelessly transmitting a selective call signal supplied from a key telephone master device 20 and a pager 81 for receiving the selective call signal transmitted from the transmitter 71. When a key telephone set 61 executes input operation for calling the pager 81 a call request is transferred from the set 61 to the device 20 and a selective call signal is formed by the device 20 and wirelessly transmitted from the transmitter 71 to call the pager 81. When the ID number of the pager 81 is inputted from the set 61, the ID number is transferred from the set 6 to the device 20, which forms a channel between the set 61 transferring the ID number and a key telephone set outputting a call request to attain a call.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone system having an individual calling function by a pager.

[0002]

2. Description of the Related Art In recent years, as one of the key telephone systems, a system having a function of calling an unidentified speaker who cannot be called by the key telephone because he / she is away from his / her seat and is in another place has been proposed. ing. In this type of system, for example, as shown in FIG. 3, a key telephone main unit 2 connected to a central office line 1 and a plurality of key telephone units 4 connected to the key telephone main unit 2 via extension lines 31 to 3n, respectively.
In addition to 1 to 4n, a loudspeaker 5 having an amplifier 5a and a speaker 5b is provided. When calling a speaker whose location is unknown, the caller uses the button telephone 41 near by.
At, dial operation for call request is performed. As a result, a call path is formed between the key telephone 41 which has issued the call request by the key telephone main unit 2 and the loudspeaker 5, and in this state, the caller sends a message for calling by the key telephone 41. This transmission signal is sent to the loudspeaker 5 via the key telephone main unit 2 and is loudly output from the speaker 5b. Therefore, even if the other speaker is away from his / her own key telephone, the call can be made as long as the speaker 5b can hear the loud sound.

[0003]

However, since the conventional system of this type calls the other party's speaker in a loud voice by using the loud speaker, the third party other than the called party is likely to make noise. It was very unpleasant because it caused trouble. Further, in consideration of annoyance to a third party, there is no choice but to limit the volume, which causes a problem that the callable range is narrowed. Furthermore, it was not possible to call individually without the knowledge of a third party.

The present invention has been made in view of the above circumstances, and an object thereof is to allow desired speakers to be individually selected in a wide range without being disturbed by noise without being known to a third party. It is to provide a button telephone system that can be called.

[0005]

In order to achieve the above object, the present invention provides, in addition to a key telephone main unit and a plurality of key telephones, a transmission for wirelessly transmitting a selective call signal supplied from the key telephone main unit. At least one of the device and the selective call signal transmitted from the transmitting device is collated with the individual identification information stored in advance, and when the collation determines that a call to the own device is generated, at least one is issued. There are two pagers. Each of the key telephones is provided with a call request transfer means and an individual identification information transfer means, and when an input operation for calling the pager is performed, the call request transfer means issues a call request to the pager. When the individual identification information of the pager is transferred to the key telephone main device and the individual identification information transfer means transfers the individual identification information to the key telephone main device, the button telephone The main unit is provided with pager call control means and pager response connection control means, and when the call request to the pager is transferred from the key telephone, the pager call control means performs selective call including the individual identification information of the pager. A signal is generated and supplied to the transmitter for wireless transmission, and a page is sent from the key telephone. If the individual identification information of the caller is transferred, the caller is connected by connecting the call path between the button telephone that has transferred the individual identification information by the pager response connection control means and the button telephone that has made the call request. It is made possible. The present invention is also characterized in that the key telephone is provided with a pager call function button provided corresponding to the pager.

Further, according to the present invention, the pager is provided with a detachable portable memory storing the individual identification information, and the individual identification information transfer means of the key telephone is provided with a memory socket to which the portable memory is detachably attached. It is also characterized in that when the portable memory is attached to the memory socket, the individual identification information is read from the portable memory and transferred to the key telephone main unit.

[0007]

As a result, according to the present invention, when calling a speaker whose location is unknown, when the caller makes a call operation to the pager owned by this speaker by the key telephone, the key telephone main unit individually operates the pager. A selective call signal including identification information is generated and wirelessly transmitted from the transmitting device, whereby the pager is wirelessly called. When the speaker who receives the call inputs the individual identification information of his or her pager using the button telephone near him, this button telephone and the button telephone that has made the call request are connected by the key telephone main unit. This enables a call between the calling party and the called party. That is, an unidentified person is called by a pager, and if the unidentified person responds by using a key telephone, the unidentified person and the caller can be connected to each other via a communication path to make a call.

Therefore, the caller can call the speaker whose location is unknown, without using the loud voice and without causing any trouble to the third party due to noise. In addition, since no loud voice is used, it is possible to make a call in a wide range, thereby increasing the call completion rate. Furthermore, a specific speaker can be called individually without being known to a third party.

According to the present invention, the key telephone is provided with the pager call function button provided corresponding to the pager, so that the caller can input the individual identification information of the pager only by pressing the call function button. You can make a call with an extremely simple operation.

Further, according to the present invention, when the portable memory attached to the pager is attached to the memory socket of the button telephone, the individual identification information stored in the portable memory is read into the button telephone and the key telephone main Transferred to the device and connected to the caller's key telephone. Therefore, the speaker who receives the call by the pager answers the call by replacing the portable memory with the memory socket of the button telephone without performing the operation for inputting all digits of the individual identification information. Can talk to someone. Therefore, the speaker can respond to the caller without knowing or forgetting the personal identification information of the pager he owns.

[0011]

FIG. 1 is a block diagram showing the functional configuration of a key telephone system according to an embodiment of the present invention. In addition,
In the figure, the same parts as those in FIG. 3 are designated by the same reference numerals.

This system comprises a key telephone main unit 20 connected to the central office line 1, a plurality of key telephone units 61 to 6n connected to the key telephone main unit 20 via extensions 31 to 3n, and the above-mentioned buttons. The telephone main unit 20 is provided with a transmitting device 70 attached thereto and a plurality of pagers 81 to 8m. In the figure, for convenience of illustration, only the button telephone 61 among the plurality of button telephones 61 to 6n is shown.
The same applies to the pagers 81 to 8m.
Shows only.

First, the key telephones 61 to 6n include a telephone circuit 6a and a handset 6 including a transmitter and a receiver.
b, a control circuit 6c, an operation unit 6d, a display unit 6e using, for example, an LCD display, and an ID memory reading unit 6f. Of these, the operation unit 6d is provided with, for example, a plurality of calling function buttons in addition to various buttons conventionally provided such as a dial key, a hook button, a station line selection button, and an extension selection button. These call function buttons are the pager's individual identification number (ID number) in advance.
Is associated with. Also, the ID memory reading unit 6f
Is an IC card or RAM pack
A socket for detachably mounting the D memories 91 to 9m, and the ID memories 91 to 9m mounted to the sockets
And a reading circuit for reading the ID number.

By the way, the control circuit 6c is provided with, for example, a microcomputer as a main control section, and in addition to the usual call control means associated with the first incoming call, the call request transfer means 6 is provided.
c1 and ID transfer means 6c2. When the call function button is operated during standby, the call request transfer means 6c1 outputs the pager call request and the number of the operated call function button to the key telephone main unit 20.
To be transferred to. When the ID memory reading unit 6f reads the ID number after a call operation is performed during standby, the ID transfer means 6c2 sends the call request together with the read ID number to the key telephone main unit 20. To be transferred to.

Next, the key telephone main unit 20 includes the exchange circuit 2
a, a local line circuit 2b, and a plurality of line circuits 21 to 2n
And a control circuit 2c and a storage unit 2d. A wired telephone network (not shown) is connected to the station line circuit 2b via the station line 1, and extension lines 31 to 3 are respectively provided to the line circuits 21 to 2n.
Button telephones 61 to 6n are respectively connected via n. Under the control of the control circuit 2c, the exchange circuit 2a exchanges and connects the station line circuit 2b and the line circuits 21 to 2n and the line circuits 21 to 2n. The storage unit 2d includes, for example, a ROM. In this ROM, the pager ID numbers are stored in advance in correspondence with the numbers of the call function buttons provided in the key telephones 61 to 6n.

By the way, the control circuit 2c is provided with, for example, a microcomputer as a main control unit, and has a control function of the station line 1 and the key telephone 61 in response to an incoming or outgoing call.
6n and button telephones 61-6n, in addition to a normal connection control function for controlling connection, pager call control means 2c1 and pager response connection control means 2c2 are provided.

When the pager call control means 2c1 transfers the pager call request together with the pager call request from the key telephones 61 to 6n, the pager call control means 2c1 first accesses the storage section 2d to obtain the ID number corresponding to the call function button number. Read. Then, a selective calling signal including this ID number is generated, and this selective calling signal is supplied to the transmitting device 71 to be wirelessly transmitted. After the selective call signal is transmitted, the number of the key telephone that has issued the call request is set to the ID of the called party.
Remember with the number. If message data is sent from the key telephone after the above ID number,
This message data is also inserted in the selective call signal.

The pager response connection control means 2c2 determines that the call request is a response from the pager owner when the ID numbers are transferred from the key telephone sets 61 to 6n together with the call request. The switching telephone 2a connects the key telephone that has made this response and the key telephone that has made the call request earlier.

On the other hand, FIG. 2 is a circuit block diagram showing the configurations of the transmitter 71 and the pagers 81 to 8m. First, the transmitter 71 includes a modulation circuit 7a, a local oscillator 7b, and a transmission amplifier 7c. In the modulation circuit 7a, the local oscillation signal generated from the local oscillator 7b is frequency-modulated and frequency-converted into a radio frequency in accordance with the selective call signal supplied from the control circuit 2c of the key telephone main unit 20. The transmission amplifier 7c amplifies the radio signal output from the modulation circuit 7a, and the amplified radio signal is transmitted from the antenna 70.

Next, the pager 81 is constructed as follows. That is, the wireless selective call signal transmitted from the transmitting device 71 is received by the receiving circuit 8 a via the transmitting antenna 80.
Then, it is demodulated by the demodulation circuit 8b, and then input to the control circuit 8c. In the control circuit 8c, the ID number included in the selective call signal received and demodulated is the ID
It is collated with the own ID number read from the ID memory 90 via the memory reading unit 8h. When both numbers match, a sound signal is supplied from the control circuit 8c to the speaker drive circuit 8d, and as a result, a sound is output from the speaker 8e. When message data is inserted in the selective call signal, the message data is decoded by the control circuit 8c and then supplied to the display drive circuit 8f to be displayed on the LCD display 8g.

Further, the pagers 81 to 8m of this embodiment are
An ID memory reading unit 8h is provided for detachably mounting the ID memory. This ID memory reading section 8h
Is composed of a memory socket and an ID number reading circuit for reading an ID number from the ID memories 91 to 9m attached to the memory socket.

Next, the operation of the key telephone system configured as described above will be described. It is assumed that the first speaker presses the call function switch corresponding to the pager 8i on the key telephone 61 in order to call the second speaker who owns the pager 8i. Then, the number of the calling function button is transferred from the key telephone 61 to the key telephone main unit 20 together with the call request. On the other hand, in the control circuit 2c of the key telephone main unit 20, when the call request arrives, first, the ID number corresponding to the call function button number is read from the storage section 2d, and the selective call signal including this ID number is generated. To be done. At this time, if the message data is transferred from the key telephone 61 by the DTMF signal, this message data is also inserted into the selective call signal. Then, the selective call signal is supplied to the transmitting device 71. The transmitter 71 generates a radio signal modulated by the selective call signal, and the wireless selective call signal is transmitted from the antenna 70.

On the other hand, each of the pagers 81 to 8m is monitored for arrival of a selective call signal including an ID number addressed to itself. In this state, when the pager 8i receives the selective call signal including the ID number addressed to itself, the pager 8i causes the speaker 8e to emit a sound. If the selective call signal includes message data, the message is decoded and displayed on the LCD display 8g. Therefore, the second speaker, who is the owner of the pager, can recognize that the call has been made to him by the ringing sound, and can confirm a simple instruction such as "contact me immediately" from the message. it can.

Then, the second speaker who has recognized the call to himself / herself is the button telephone near him, for example, the key telephone 6n.
In step 3, a call operation is performed, and further, the ID memory 9i formed of, for example, an IC card attached to the pager 8i is removed, and the ID memory reading unit 6 of the key telephone 6n is removed.
When the key telephone 6n is mounted in the socket of f, the ID number stored in the ID memory 9i is read by the key telephone 6n, and this ID number is transferred to the key telephone main unit 20 together with the call request.

On the other hand, the key telephone main unit 20 determines that it is a response to the pager call due to the arrival of the ID number. Then, the key telephone 61 that has issued a call request to the pager 8i having the ID number in the closest past is selected, and the key telephone 61 and the key telephone 6n are connected via a communication path. Therefore, thereafter, a call can be made between the first speaker who is the calling party and the second speaker who is the called party.

As described above, in the button telephone system of this embodiment, a speaker whose location is unknown can be called by using the pager 8i. As a result, unlike the conventional system for making a loud call, a loud sound transmission with a large volume is not performed, whereby noise to a third party can be eliminated. Moreover, since it is not necessary to consider noise, it is possible to make a call in a wide range.
Furthermore, an individual call can be made to a desired party without being known to a third party.

In the present embodiment, the key telephone 61
By providing the call function buttons to 6n, the caller can call by simply pressing the call function button according to the pager owned by the caller. For this reason, it is possible to call the call promptly and without error with an extremely simple operation.

Further, the ID memories 91 to 9m of the pagers 81 to 8m can be attached and detached, and the key telephones 61 to 6 can be attached.
By providing the ID memories 91 to 9m to the n and providing the ID memory reading unit 6f for reading the ID number, the called party inputs his own ID number by using, for example, a dial key when responding. This eliminates the need for a simple operation and enables quick response without error.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the pagers 81 to 8
ID memories 91 to 9m can be attached to and detached from the m.
The D memories 91 to 9m are mounted in the ID memory reading section 6f of the button telephones 61 to 6n, but the pager itself is provided with an ID number reading terminal so that the pager can be mounted to the ID number reading terminal of the button telephone. You may comprise.

The pager may also be used as a pager called from a general public telephone network. In this case, in order to distinguish the call from the public telephone network and the call from the button telephone system, it is preferable to make the tone color of the ringing tone, the intermittent period, or the blinking period of the light emission different.

In addition, the circuit configuration of the key telephone main unit, the key telephone, the transmitter and the pager, and the control procedure and control contents of each control circuit can be variously modified and implemented without departing from the scope of the present invention. ..

[0032]

As described above in detail, according to the present invention, in addition to a key telephone main unit and a plurality of key telephones, a transmitter for wirelessly transmitting a selective call signal supplied from the key telephone main unit, and this transmission. The selective call signal transmitted from the device is received and collated with the individual identification information stored in advance,
There is provided at least one pager for issuing a call notification when it is determined by this collation that a call to the own machine has occurred. Each of the key telephones is provided with a call request transfer means and an individual identification information transfer means, and when an input operation for calling the pager is performed,
When the call request transfer means transfers the call request for the pager to the button telephone main unit, and when the individual identification information of the pager is input, the individual identification information transfer means transfers the individual identification information to the button. The key telephone main unit is further provided with pager call control means and pager response connection control means, and when the call request to the pager is transferred from the key telephone, the pager call is transmitted. When the selective calling signal including the individual identification information of the pager is generated by the control means and supplied to the transmitting device for wireless transmission, and the individual identification information of the pager is transferred from the key telephone, the pager response connection is made. The call request was made with the key telephone which transferred this individual identification information by the control means. It is obtained so as to enable a call by connecting a speech path between the Tan phone.

Therefore, according to the present invention, it is possible to provide a button telephone system which allows a desired speaker to be individually called in a wide range without being known to a third party and causing troubles due to noise.

[Brief description of drawings]

FIG. 1 is a block diagram showing a functional configuration of a key telephone system according to an embodiment of the present invention.

FIG. 2 is a circuit block diagram showing configurations of a transmitter and a pager in the system shown in FIG.

FIG. 3 is a schematic configuration diagram of a conventional key telephone system.

[Explanation of symbols]

1 ... Station line, 20 ... Button telephone main unit, 21-2n ... Line circuit, 2a ... Exchange circuit, 2b ... Station line circuit, 2c ... Control circuit, 2c1 ... Pager call control means, 2c2 ... Pager response connection control means, 2d ... Storage unit, 31-3n ... Extension, 61-6n ... Button telephone, 6a ... Call circuit, 6b
... handset, 6c ... control circuit, 6c1 ... call request transfer means, 6c2 ... ID transfer means, 6d ... operation section, 6e ...
Display unit, 6f ... ID memory reading unit, 70, 80 ... Antenna, 71 ... Transmitting device, 7a ... Modulation circuit, 7b ... Local oscillator, 7c ... Transmitting amplifier, 81-8m ... Pager, 8a
... Reception circuit, 8b ... Demodulation circuit, 8c ... Control circuit, 8d ...
Speaker driving circuit, 8e ... Speaker, 8f ... Display driving circuit, 8g ... LCD display, 8h ... ID memory reading section,
91 to 9 m ... ID memory.

Claims (3)

[Claims] 1. A key telephone main unit, a plurality of key telephones respectively connected to the key telephone main unit via wired communication paths, and wirelessly transmitting a selective call signal supplied from the key telephone main unit. At least a call notification is given when the transmitter and the selective call signal transmitted from the transmitter are received and collated with the individual identification information stored in advance, and when it is determined by this collation that a call to the own device has occurred. Each of the key telephones comprises one pager, and a call request transfer unit for transferring a call request for the pager to the key telephone main device when an input operation for calling the pager is performed. An individual identification information transfer unit for transferring the individual identification information of the pager to the key telephone main device when the individual identification information of the pager is input. The key telephone main unit, when a call request to the pager is transferred from the key telephone, generates a selective call signal including individual identification information of the pager, supplies the selective call signal to the transmitter, and wirelessly transmits the signal. And a pager corresponding to the individual identification information transferred from this key telephone, when the individual identification information of the pager is transferred from the key telephone, and the pager corresponding to the individual identification information transferred from this key telephone. A button telephone system, comprising: a pager response connection control means for connecting a call path to a button telephone that has made a call request to enable a call. 2. The key telephone system according to claim 1, wherein the key telephone has a pager call function button provided corresponding to the pager. 3. The pager has a detachable portable memory storing individual identification information, and the individual identification information transfer means of the key telephone has a memory socket to which the portable memory is detachably attached, 2. The key telephone system according to claim 1, wherein when the portable memory is attached to the memory socket, the individual identification information is read from the portable memory and transferred to the key telephone main unit.