JPH0813063B2 - Cordless home telephone system - Google Patents

Description

The present invention relates to a cordless home telephone system, and more particularly to a cordless home telephone system in which a wireless telephone terminal including a fixed machine and a mobile station is provided as one terminal of a home telephone.

[Prior Art and Problems to be Solved by the Invention] As shown in FIG. 2, a conventional home telephone has a terminal adapter 1 and a telephone terminal TEn (n is 11 to 1 for explanation).
6, n = 11 is a parent telephone terminal, and 12 to 16 are extension telephone terminals) and an entrance slave TD ₁ .

The terminal adapter 1 has terminals 1a, 1b, 1c,
The door phone line L ₃ connects between 1c and the entrance slave TD ₁ . Further, the terminal 1b and the terminal T ₂ of the telephone terminal TEn are connected by the extension line L ₂ . The exchange EX, the terminal 1a of the terminal adapter 1 and the telephone terminal TEn on the central line L ₁
Are connected to terminals T ₁ ... of.

The office line L ₁ is used for making and receiving an office line from the telephone terminal TEn.

The extension line L ₂ is used for extension calls and transmission / reception of tone signals between the telephone terminals TEn.

The intercom line L ₃ is used for intercom communication between the entrance cordless handset TD ₁ and the telephone terminal TEn.

The terminal adapter 1 includes a doorphone interface 2, a ringing tone oscillator 3, a tone signal filter 4, a tone signal generator 4a, a tone signal demodulator 4b and a CPU 5.

The telephone terminal TEn is a station / extension selector switch SW ₁ , extension switch SW ₂ , tone signal filter 7, tone signal demodulator 7
a, tone signal generator 7b, CPU 8 and telephone circuit 9. Also, the telephone circuit 9 is a hook switch 10b,
It is composed of a telephone circuit IC 11, a dial button 12, and a handset 13. The telephone circuit 9 eliminates the band below 3000 Hz.

Further, the parent telephone terminal TE ₁₁ is provided with an incoming call detector 15 and is configured to detect an incoming call signal from the exchange EX via the curved line L ₁ . Extension telephone terminal TE ₁₂ ~
The TE ₁₆ does not have the incoming call detector 15.

The tone signal is composed of a voice out-of-band signal of 10 to 50 KHz, and includes a hook switch 10a, an extension call button Kn, and an incoming call detector 15
It is also used as a call control code such as a call from the entrance cordless handset TD ₁ . The ring tone oscillator 3 of the terminal adapter 1 is 40
It is configured to oscillate 0Hz local line ringing tone, extension ringing tone and intercom ringing tone. Ring amplifier 6 of telephone terminal TEn
Is configured to amplify the input station line, extension line, and intercom ringing tone, and to output to the speaker 6a.

With the home telephone configured as described above, the line from the exchange EX to the local line
When there is an incoming call via L ₁ , the incoming call detector 15 of the telephone terminal TE ₁₁ operates. When the incoming call detector 15 operates, the CPU 8 sends a tone signal corresponding to the incoming call code to the terminal 1b of the terminal adapter 1 via the tone signal generator 7b, the tone signal filter 7, the terminal T ₂ and the extension L ₂ . Sent out.
The terminal adapter 1 receives the station line incoming code input from the terminal 1b by the tone signal filter 4 and the tone signal demodulator 4b and decodes it by the CPU 5. When the CPU 5 decodes the incoming line code, the ringing tone oscillator 3 is operated. When ringing oscillator 3 operates, terminal 1b, extension L ₂ , terminal T of telephone terminal TEn
_{2 A} ringing tone is sent to .... Telephone terminal TEn is a terminal
When a local line ringing tone is input from T ₂ , the ringing tone amplifier 6 ...
Sends a ringing tone from ... to speaker 6a. For example, when the telephone circuit 9 of the telephone terminal TE ₁₁ goes off-hook, the hook switches 10a and 10b are closed. Hook switch 10b
Is closed and the local line button (not shown) is pressed
The normally open contact of the station line / extension switch SW ₁ is closed under the control of the CPU8. As a result, a DC circuit to the exchange EX side is formed, and the exchange EX learns that the telephone terminal TE ₁₁ responded and stops the incoming signal to the central line L ₁ . The response of the telephone terminal TE ₁₁ is that by closing the hook switch 10a, the CPU 8 switches the station line / extension selector switch SW ₁ to the station side, and the CPU 8 sends a tone signal corresponding to the station line response code to the tone signal generator 7b.
From the tone signal filter 7, the terminal T ₂ , and the extension line L ₂ to the terminal 1b of the terminal adapter 1 and the terminal T ₂ of another telephone terminal TEn. The terminal adapter 1 receives the station line response code input from the terminal 1b by the tone signal filter 4 and the tone signal demodulator 4b. The CPU 5 decodes the station line response code received by the tone signal demodulator 4b and stops the ringing tone oscillator 3. The other telephone terminal TEn receives the line response code input from the terminal T ₂ by the tone signal filter 7 and the tone signal demodulator 7a, decodes it by the CPU 8, and stops the operation of the ringing tone amplifier 6. In this way, the telephone terminal TE ₁₁ can make a local line call via the local line L ₁ exchange EX.

In the case of station line transmission, for example, when the telephone terminal TE ₁₁ goes off-hook, the hook switches 10a and 10b are closed, and a station line button (not shown) is pressed, the CPU 8 controls the station line / extension selector switch SW ₁ to operate. The normally open contact closes. This allows
The central office line outgoing code is sent to the terminal adapter 1 through the same route as the central office line incoming code. Office line / extension changeover switch SW ₁ be off-hook in telephone terminal TE ₁₂ ~TE ₁₆ so sends the code in the office line talking in the terminal adapter 1 to the telephone terminal TEn remains in contact with the extension side, the office line Cannot be captured. The telephone terminal TE ₁₁ can make an outside line call with the dial button 12 by closing the hook switch 10b.

In the case of an extension call, for example, when calling a call from the telephone terminal TE ₁₁ to TE ₁₆ , the extension switch SW ₂ is turned on when the extension call button K ₁₆ is pressed off the telephone terminal TE ₁₁ and the extension call code # 16 is set. tone signal corresponding to is sent from the tone signal generator 7b to the terminal adapter 1 and another telephone terminal TE ₁₂ ~TE _16. Telephone terminal TE ₁₂ ……
Telephone terminal TE ₁₆ of the TE ₁₆ to the ring amplifier 6 as an active listening on # 16 extension call sign. On the other hand, the terminal adapter 1 to which the # 16 extension calling code is input is the ring tone transmitter 3
Telephone terminal TE ₁₂ unrelated since delivering extension busy code sends out the extension ring tone from ~TE ₁ 5 extension switch
SW ₂ …… cannot operate.

In this way the telephone terminals TE ₁₁ and TE ₁₆ are connected to the extension L ₂
You can talk in extension mode using.

When the user presses the call button (not shown) at the entrance door station TD _1, detected by the intercom interface 2, intercom call sign from the tone signal generator 4a of the terminal adapter 1 by CPU5 phone terminal TEn tone signal demodulator 7a ... …
To activate the ringer amplifier 6. on the other hand,
Since the terminal adapter 1 sends the intercom ringing tone from the ringing tone oscillator 3 to the ringing tone amplifier 6 of the telephone terminal TEn, if the telephone terminal TE ₁₁ goes off-hook, the extension switch SW ₂ is turned on as in the extension mode. Door phone T
D ₁ and telephone terminal TE ₁₁ are doorphone line L ₃ and extension line L ₂
You can talk in the intercom mode using.

Since the conventional home telephone is configured as described above, it is not possible to make a call in the station line mode, the extension line mode, and the intercom mode at a place away from the telephone terminal.

[Object of the Invention] The present invention has been made in view of the above points, and by providing a wireless telephone terminal composed of a fixed device and a mobile device as one terminal of a home telephone, a station line mode, an extension mode, An object of the present invention is to provide a cordless home telephone system capable of making a call in a doorphone mode and also making a call between telephone terminals connected by wire to a wireless telephone terminal.

[Means for Solving the Problems] A cordless home telephone system according to the present invention is a terminal adapter and a terminal adapter which are respectively connected to a station line used for arrival and departure from a station line and a doorphone line from an entrance cordless handset capable of making a doorphone call. A home telephone is composed of a plurality of telephone terminals connected to each other via a station line and an extension line, and at least one of these telephone terminals is composed of a wireless telephone terminal composed of a fixed machine and a mobile machine. Has a radio section and an interface section, and the interface section has a station line / extension switch for switching between a station line and an extension line,
An extension switch for connecting the extension line to the normally closed contact side of the station / extension selector switch and a wireless switch interposed between the station / extension selector switch and the radio unit are provided.

[Embodiment] An embodiment of the cordless home telephone system according to the present invention will be described in detail with reference to FIG. Incidentally, FIG. 1 and FIG.
In the figure, the same parts are designated by the same reference numerals, and the description thereof will be omitted.

The cordless home telephone system according to the present invention is the first
As shown in the figure, terminal adapter 1, telephone terminal TEn
(For the sake of explanation, n is 11, 2, 13 to 16, n = 11 is a master telephone terminal, and n = 2, 13 to 16 is an extension telephone terminal. TE ₂ of the extension telephone terminals is a radio telephone terminal. And the entrance cordless handset TD ₁ .

Terminal adapter 1 and the entrance door station TD ₁ is connected with the intercom line L _3, it is intercom calls intercom mode intercom line L _3.

The telephone terminal TEn has terminals T ₁ and T ₂ , the terminal line L ₁ is connected to the terminal T ₁ , and the terminal line line L ₁ enables telephone line communication in the terminal line mode. Further, the terminal T ₂ is connected to the extension line L _2, the extension line L ₂ is telephone terminal TEn
Used for mutual extension calls and for sending and receiving tone signals.

The terminal adapter 1 is composed of a doorphone interface 2, a ring oscillator 3, a tone signal filter 4, a tone signal generator 4a, a tone signal demodulator 4b and a CPU 5.

The telephone terminal TE ₂ is composed of a stationary device 20 and a mobile device 30.

Stationary machine 20 is station line / extension switch SW ₁ , extension switch SW ₂ , wireless switch SW ₃ , speech IC 11a, dialer I
It is composed of an interface unit 28 composed of C11b and a radio unit 21. Interface switch 28 wireless switch SW ₃
Is a switch that has the same function as a hook switch. The wireless unit 21 includes a transmission circuit 22, a synthesizer 23, a reception circuit 24, and antennas 25 and 26. Synthesizer 23 has CPU 8
In response to the control of the line code, the line code, the line response code, the line busy code, the line call code, and the extension call code are transmitted and received, and the mobile unit 30 is operated by the MAC method applied to a normal cordless telephone. Is configured to select a call channel with.

The interface unit 28 has a ringing tone amplifier 6, a tone signal filter 7, a tone signal demodulator 7a, and a tone signal generator 7b.

The mobile device 30 includes a receiving circuit 31, a synthesizer 32, and a transmitting circuit 3.
3, a CPU 34, a reception switch 35, and a transmission switch 36. Under the control of the CPU 34, the synthesizer 32, like the synthesizer 23 of the stationary device 20, is configured to select a call channel that is not used in the MAC method applied to a cordless telephone defined by the Radio Law.

[Operation of the Invention] When an incoming call is received from the telephone terminal TE ₁₁ via the station line L ₁ , the station line incoming code is transmitted from the tone signal generator 4a of the terminal adapter 1 to the telephone terminal TEn as in the conventional case. It The tone signal demodulation unit 7a of the interface unit 28 of the telephone terminal TE ₂ demodulates the station line incoming code and the CPU 8 decodes it.
The CPU 8 controls the synthesizer 23 by the deciphered station line incoming code and wirelessly transmits the station line incoming code to the receiving circuit 31 of the mobile unit 30 via the transmitting circuit 22 and the antenna 25. In the mobile unit 30, the station line incoming code received by the receiving circuit 31 is decoded by the CPU 34, and the speaker 6a is activated via the ringing tone amplifier 6b.

When the mobile device 30 picks up the handset 13 and goes off-hook, the CPU 34 controls the transmission circuit 33 by closing the hook switch 10a. When the station line button (not shown) is pressed, the transmission circuit 33 sends the station line response code to the fixed machine 20 under the control of the transmission circuit 33. The station line response code demodulated by the receiving circuit 24 of the fixed machine 20 is decoded by the CPU 8, and the wireless switch SW ₃ and the station line /
Close the normally open contact of extension switch SW ₁ to make speech IC 1
Connect 1a to office line L ₁ . Since the reception and transmission switches 35 and 36 of the mobile device 30 are closed by the control of the CPU 34 by closing the hook switch 10a, the transmission from the mobile device 30 is a transmission circuit.
33, sent out to the stationary machine 20 by radio wave f _T. In the stationary device 20, the reception circuit 24 demodulates the radio wave f _T and sends the voice to the office line L ₁ via the make-side contact of the speech IC 11a, the wireless switch SW ₃ , and the office / extension selector switch SW _1. . The reception is sent to the reception circuit 31 of the mobile device 30 by the radio wave f _R.

To make an office line call, the hook switch 10a is closed off-hook, and a station line button (not shown) is pressed. When the hook switch 10a is closed and the station line button is pressed, the transmission circuit 33 of the mobile device 30 receives the control of the CPU 34 and sends the station line transmission code to the antenna 26 of the stationary device 28 via the antenna 33b. The stationary machine 28 receives the radio wave f _T from the antenna 26 and receives the radio switch SW.
₃ and the normally open contact of the station / extension switch SW ₁ are closed. When the dial button 12 of the mobile device 30 is operated, the dial code is sent from the transmission circuit 33 of the mobile device 30 to the reception circuit 24 of the stationary device 20 by the radio wave f _T. The dial code is decoded by the CPU 8 and the dial code is sent from the dialer IC 11b to the office line L ₁ . Calls are made in the same route as that for receiving an incoming call from the central line.

In the intercom call, the intercom calling code transmitted from the tone signal generator 4a of the terminal adapter 1 is once demodulated by the tone signal demodulation unit 7a of the interface unit 28 of the stationary machine 20 and then decoded by the CPU 8. The decoded intercom calling code is transmitted to the receiving circuit 31 of the mobile device 30 by the radio wave f _R. The intercom ring tone sounds the speaker 6a via the ring tone amplifier 6b.
When the incoming call answering operation is performed by the mobile device 30, the ringing tone of the intercom is stopped, and the intercom response code is transmitted to the stationary device 20 by the radio wave f _T. In stationary machine 20, the intercom response code is demodulated by receiving circuit 24, and CPU 8 decodes the intercom response code. The CPU 8 decodes the doorphone response code and operates the wireless switch SW ₃ and the extension switch SW ₂ . When the wireless switch SW ₃ and extension switch SW ₂ operate, the make contact of the wireless switch SW ₃ , the normally closed contact of the station / extension switch SW ₁ and the make contact of the extension switch SW ₂ , the extension line L ₂ , the terminal adapter A doorphone call can be performed in the doorphone mode between the entrance slave TD ₁ and the mobile device 30 via the doorphone interface 2 of 1 and the doorphone line L ₃ .

Extension calls are made on extension line L ₂ . When the tone signal demodulation unit 7a of the interface unit 20 receives the # 2 extension calling code, the CPU 8 decodes that there is an extension call. CP
When the U8 deciphers that there is an extension call, an extension ringing tone is transmitted from the speaker 6a via the ringing tone amplifier 6b of the mobile device 30.

When the mobile device 30 performs an incoming call response operation, the extension response code is transmitted from the transmission circuit 33 to the fixed device 20 by the radio wave f _T. In the fixed machine 20, the receiving circuit 24 demodulates the extension response code and the CPU 8 decodes it. The decrypted extension response code is transmitted via the extension line L ₂ to the terminal adapter 1 and other telephone terminals TE ₁₁ , TE ₁₃ ...
Sent to TE ₁₆ . Extension switch S on telephone terminal TE ₂
W ₂ and wireless switch SW ₃ operate, and you can make extension calls in extension mode.

When the extension call button Kn is operated on the telephone terminal TE ₂ , for example, the # 11 extension call code is transmitted from the transmission circuit 33 to the fixed machine 20 by the radio wave f _T. In the stationary machine 20, the reception circuit 24 demodulates the radio wave f _T and the CPU 8 decodes it. The CPU 8 sends the decoded # 11 extension call code to the extension line L ₂ via the tone signal generator 7b. The telephone terminal TE ₁₁ receives the # 11 extension call code and knows that there is an extension call.

In the above embodiment, the terminal adapter 1 and the telephone terminal TE
_{Although the 11} and ₁₁ are separated from each other, the Tamil adapter 1 is used as a telephone terminal.
May be built into TE ₁₁ .

Although the telephone terminal TE ₁₁ is provided with the incoming call detector 15 in the above embodiment, the incoming call detector 15 may be provided in the terminal adapter 1. In this case, the parent telephone terminal TE ₁₁ and the extension telephones TE ₂ , ... T
E ₁₆ need not be distinguished.

[Effects of the Invention] The cordless home telephone system according to the present invention has a terminal adapter connected to a station line used to call in and out of a station line and a doorphone line from an entrance cordless handset capable of making a doorphone call, and a station line to the terminal adapter. And a plurality of telephone terminals connected via extension lines, respectively, to form a home telephone, and at least one or more telephone terminals are constituted by a wireless telephone terminal composed of a fixed device and a mobile device. An interface unit, and the interface unit includes a station line / extension switch for switching between a station line and an extension line,
Since the extension switch for connecting the extension line to the normally closed contact side of the station / extension selector switch and the wireless switch interposed between the station / extension selector switch and the radio unit are provided, a mobile phone can be used for intercom calls. The extension telephone call and the office telephone call can be performed, and the extension telephone call can be performed not only between the wireless telephone terminals but also between the wireless telephone terminal and the telephone terminal connected by a wire.

[Brief description of drawings]

FIG. 1 is a block diagram of a cordless home telephone system according to the present invention, and FIG. 2 is a conventional home telephone block diagram. 1 ...... Terminal adapter TD ₁ ...... Entrance slave TEn (TE ₁₁ , TE ₂ , TE _{13 to} TE ₁₆ ) ...... Telephone terminal TE ₂ ...... Wireless telephone terminal 20 ...... Fixed station 30 ...... Mobile station L ₁ ... … Station line L ₂ …… Extension line L ₃ …… Doorphone line 21 …… Wireless section 28 …… Interface section SW ₁ …… Station / extension switch SW ₂ …… Extension switch SW ₃ …… Wireless switch

Claims (1)

[Claims] 1. A terminal adapter (1) connected to a station line (L ₁ ) used for arrival and departure to and from a station line and a doorphone line (L ₃ ) from an entrance cordless handset (TD ₁ ) capable of intercom communication. , A plurality of telephone terminals (TEn) respectively connected to the terminal adapter via the office line (L ₁ ) and an extension line (L ₂ ) constitute a home telephone, and at least one or more of the telephone terminals A wireless telephone terminal (TE that consists of a fixed device (20) and a mobile device (30)
₂ ), wherein the fixed machine has a radio section (21) and an interface section (28), and the interface section switches between the extension line and the extension line.
An extension switch (SW ₁ ), an extension switch (SW ₂ ) for connecting the extension line to the normally closed contact side of the station / extension switch, and the station / extension switch and the radio unit. A cordless home telephone system characterized by a wireless switch (SW ₃ ) that has been set up.