JPS6150490A - Key telephone system - Google Patents

Abstract

PURPOSE:To use exclusively a special main wire for an automatic answering telephone set if required by connecting a standard telephone set to a main device as a slave machine by a pair of call lines only, adding a call signal sending function, detecting function, etc., of closing a direct current loop to the main device and connecting the automatic answering telephone set having a function as a standard telephone set to a terminal side. CONSTITUTION:Main wires 1a and 1b from a central telephone exchange are contained to a main device 2, and the main wires 1a and 1b are replaced and connected with main wire circuits 3a and 3b having a function to detect a call signal of 16Hz, a dial originating function, etc., and slave machines 7a-7d connected through a replacing and connecting circuit 5 by each pair of signal lines 6a-6d. On the other hand, a control part 31 which is composed of a microprocessor, a memory, etc., is installed, through a transmitting and receiving circuit 32 and each pair of signal lines 33a-33d the slave machines 7a-7d and control data are transmitted and received, judgement from a viewpoint of control is executed in accordance with operation data showing an operation condition from the slave machines 7a-7d and a detecting output, etc., from respective parts and based upon this, general control is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a key telephone device that can accommodate an answering machine as a handset.

[Prior art]

In recent years, there has been a trend for key telephone devices to be widely used in offices, stores, homes, etc., while answering machines (hereinafter referred to as
As answering machines (answering machines) gradually became popular, button telephones connected to cordless handsets using various types of lines such as 4-wire type.
While control data is transmitted over a signal line separate from the telephone line, answering machines are designed to be attached to standard telephones for general subscribers, and are manufactured for use with two-wire lines. Because of this, it is impossible to use it as a handset for a key telephone device for answering machine calls and meetings.

Therefore, when installing a key telephone device and an answering device, either connect all the answering devices in parallel to the central office line housed in the main device of the button telephone device, or connect the answering device to the main device by In the case of the former, there is a risk that the answering machine responds even when it is not necessary and charges for interfering with calls, while the latter In this case, if the switch operation tWA is the main device?
Is there a disadvantage that you cannot make or receive calls through the Internet? In both cases, special equipment 4 is required on the central office line side, and an answering device is required to correspond to the central office line. However, this has disadvantages such as being uneconomical in terms of capital investment.

SUMMARY OF THE INVENTION The purpose of the present invention is to fundamentally solve all the drawbacks of the conventional art.
N and connect the standard telephone as a handset to the main unit of the button telephone device @
In addition to being connected by only one pair of communication lines, it is equipped with a calling signal sending function and a DC loop closure detection function, etc., to the main device, and is connected to the terminal side of the communication line as a standard telephone. An answering device that also has the functions of In response to an incoming call from the central office line, the answering machine is also called, and in response to the answering machine's response, all telephone lines are connected to the incoming curve, and all calls are made to the answering machine in response to an incoming call from the central office line. The present invention provides an extremely effective key telephone system which is provided with a switching means for directly connecting either one of the terminals and the answering machine, and which allows a particular office line to be used exclusively for the answering machine if necessary.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

FIG. 1 is a block diagram of the entire configuration, showing that the central office lines 1a and 1b from the telephone office are housed in the main unit 2, and that the central office lines 1a and 1b from the telephone
, 1b are office line circuits 3a, 3b, which have a function of detecting a 16Hz calling signal, a dialing function, etc.
Also, the exchange connection circuit 5? through each pair of signal lines 6a
~6d! It is designed to be exchange-connected with slave units 7 & to 7d which are connected to each other.

Note that the exchange connection circuit 5 includes the office line links 4a and 4b.

Equipped with an extension link 4c and a tone link 4dk, the extension link 4 establishes an exchange connection between the slave units 7g=7d, and the extension circuit 8 supplies telephone power! v extension 1
A call is also made to the doorphone 10 via the extension 1-8 and the doorphone circuit 9 to the voice line 1)n, Ba#, and the tone link 4d'!-
Various tone signals from the tone generating circuit 11 are sent to the slave units 7a to 7d, while similar tone signals are sent to the door phone 10 via the door phone circuit 9.
It is used for mutual calls, alarm notifications, etc.

fC, each link 4a to 4c is a 2-wire system (hereinafter referred to as 2W
) is extended to the unit 21, and connected through the same unit 21 by a pair of communication lines 6e and 6f.
c It is used for exchange connection with standard telephones (hereinafter referred to as telephones) 22a and 22b.

However, in this case, the telephone & either one of 22a and 22b, -! Alternatively, an answering device, which will be described later, is used for both purposes.

On the other hand, a control section 31 consisting of a microprocessor, memory, etc. is provided and transmits/receives circuit 32 to transmit and receive control data to and from the handsets 78 to 1d through each pair of signal lines 33a to 33dk. Operation status from 7a to 7d? All control decisions are made according to the operation data shown and the detection power from each part, and based on this, control data is sent to all slave units 78 to 7d, and each part is controlled and general control is performed. is in control.

The above configuration and operation are described in [Key Telephone Device] (% Application No. 57-201987) filed separately by the present applicant.
: Japanese Patent Application Laid-Open No. 59-92694) 9 details are disclosed.

On the other hand, in FIG. 1, the one shown in FIG. 2 is used as the 2W unit 21, and a switch as a switching means is connected between each jumper of the office line 1a and the communication line 6e and the terminals 41a and 41b. The unit 42 can be freely layered 9, and when it is all installed, jumper 1 terminal 4
If you disconnect the jumper M' of each of 1a and 41b and operate the switch in the switch unit 42, the central line 1a
Side office line circuit 3a, office line link 4a, 2W unit 21
The circuit inside is disconnected, and the central office line 1& and telephone 22a are disconnected!
When the connection is made, the calling signal detection function in the office line circuit 3a is stopped accordingly.

Figure 2 is a circuit diagram of the 2W unit 21, showing magnetic holding type latching relays XC5, XC6, XS5°XS6.
and relay XI5. XI6. Through the contacts xc5', xc52 to srl', and ar12 of SRI and SR2, the communication lines 6e and 6f and the links 48 to 4c
The exchange connection #c is disconnected 9, and these constitute an exchange connection circuit, and the relay SR
Depending on the operation of I and SR2, a 16Hz ringing signal (RI
GI), (RIG2) are sent from the calling signal generator 51 to the communication lines 6e, 6f via resistors R28, R29'iz, while in the state where each relay is restored, the communication lines 6e,
6f, the roof current is supplied from the power supply +24■ through resistors R9, R33, R34 and capacitor C1l, and the busy sound from the tone signal generator 52 is superimposed on the loop current and sent out. It has become.

In addition, relay XI5. Due to the operation of XI6, the call [6e
, 6f are connected to the tone link 4c, and the next time the tone signal generator 52 outputs a ringing tone.

However, the calling signal generator 51 changes the intermittent cycle of the calling signal to be sent out according to the control signal 61 from the control section 31, for example, as shown in the following table.

Also, the sound output from the tone signal generator 52 is transmitted from the data bus 62'1! from the control section 31! r, and when the selector 53, which has all built-in latch circuits on the output side, selects all outputs PC4 to PC6 in response to a 2-bit selection signal 63 given from the control unit 31, the inputs D4 to D6 In order to send data from the outputs PC4 to PC6 according to the control data given to the output terminals, signals (DBT2), (
According to RBT), (DBTυ 1,
The transmission and intermittent cycles of each transmission sound are controlled.

Note that the selector 53 selects the response state p and the selection signal 63 according to the chip select signal 64 from the control unit 31.
Three sets of outputs PAO to PA7, depending on the bit combinations of
Since PBO to PB7 and PCO to PC7 are selected and the data of the corresponding input Do to D7 is sent, data to fully drive each relay is sent accordingly, and the impark 55a
~55d, 56a~56h 'L,'' (low level) m number < xc5S), (XC5R) ~ (XS
6S), (XS6R).

(XI5)~(SR2), and the signal (XI5)~
(SR2) causes all relays XI5 to SRZ to operate, and signals (XC5S) and (XC6S).

(XS5S) and (XS6S) energize the operating windings 1p of the L launching relays XC5 to XS6 to maintain their respective operations, while the signal (XC5R).

(XC6R), (XS5R), and (XS6R) energize these restoration windings S to restore the ones being held.

On the other hand, a parallel circuit on the series circuit consisting of resistors R37 and R38, light emitting diodes of 7-opto couplers PC2 and PO2, and resistors R39 and R40 is inserted into the - line of the communication lines 6e and 6f, respectively. 6e, 6f
The light emitting diode emits light in response to the loop current that flows when the DC loop circuit is closed on the terminal side of It detects the closure of a loop circuit.

That is, +5V is applied to the collector of each light-receiving transistor via resistors R48 and R49, and the voltage is normally '
H” (high level), but the impedance between the collector and emitter decreases as the loop current flows.
The collector voltage becomes IIL", which is the total detecting power (LP
I), (LP2), this causes the inverter 57a, which has all the Schmitt trigger characteristics, to
57b, and the control section 3 is inverted by the buffer 58.
The control data is sent to the leg restraining section 31 through all of the buffer gates 59 which are turned on in accordance with the chip select signal 65 from 1 and through part of the data bus 62 at a timing different from the above-mentioned control data.

Note that resistors R37 and R38 each have a constant voltage of 11"
AyF-to ZD4, Zn2o, J: and diodes D3 and D4 are connected in parallel to keep the voltage applied to the light emitting diode circuit constant and to bypass all the current flowing in the opposite direction. ing.

In addition, the station line links 4a, 4bK have diode dowels 71a, 71b inserted in each, so that the polarity of the voltage applied from the exchange to the lines of the stations 1ii1a, 1b is reversed by the response of the other party. However, the polarity applied to the communication lines 6e and 6f is constant.

FIG. 3 is a circuit diagram of the switch unit 42, in which a switch Ka having four sets of transfer contacts is provided.
The main poles 2, 5 go to the office line 1a side, the break poles 3, 6 go to the office line circuit 3a side, the main poles 8, 11 go to the communication line 6e side, the break poles 9, 12 go to the 2W unit 21 (ill), Connected through connectors CNvi- and make poles 1 and 1, respectively
and 4 and 10 are commonly connected, and in the illustrated state, the office line 1a is connected to the office line circuit 3a, and the telephone line 6 is connected to the office line circuit 3a.
e is connected to the 2W unit 21, but by operating the switch &, the office line circuit 3a to the 2W unit 21 are disconnected, and the office line 1a and the communication line 6e are connected directly to the main unit. It becomes unrelated to 2.

FIG. 4 is a complete block diagram of the answering machine connected to the terminal side of the communication lines 6e and 6f, 111 is a communication circuit, 112
U handset, 7 switches) ISI'
It is connected to the line terminal via i and telephone calls are made. In addition, 113 is a tone ringer circuit, 114 is a speaker, and an incoming call is notified by C.As will be described later, even when the answering mode is set, all handset calls can be made by off-knocking.

On the other hand, 115 is a regenerative amplifier, 116 is a reproducing head, and 11
7 is a cassette deck for response message (OGM).1.
line transformer 118 and high pre-1 rad circuit 119, then 1. The signal is connected to the line terminal LK through the contact ai which is closed by the operation of the relay A, and when the analog switch 121 is in the on state, it is recorded on a locking tape and is played back and sent to the line terminal. Similarly, 122 is a recording amplifier, 123 is a recording/playback head, a 124-it message (ICM) cassette deck is connected, and the line terminal LK is connected. Recording of the upcoming workshop. In addition, the analog switch 126
By turning on the deck 124 and operating the deck 124, it is possible to listen to the recorded ICMk by the spill power 128 via the monitor amplifier 121.

Each analog switch 121, 125゜126
The operation of relay A can be controlled by control circuit 129. That is, the control circuit 129 consists of a microprocessor, a memory, etc., and when an answering mode is set by operating the answering switch SWI, when an incoming call is detected by the incoming call detection circuit 130, it operates the relay A'. Each deck 11γ, 124' is controlled via a deck controller 131 to perform a predetermined operation.

When a predetermined remote control signal is detected by the remote control signal detection circuit 132 or when a specific hook state is detected by the hook switch H82, predetermined operation money is lent correspondingly.

On the other hand, if the switch SWI is not operated, the device enters the at-home mode and simply functions as a telephone.

In addition, depending on the operation of the recording and playback button 141, forced recording and playback control is performed on the cassette decks 117 and 124, while the dial $-14
In response to the operation No. 2, the dial circuit 143 responds and sends out a dial pulse.

The above configuration and operation are described in a separate application filed by the present applicant [Functional Telephone-1 (Japanese Patent Application No. 59-9861).
4) details are disclosed.

Therefore, if the answering devices 22a, 22bf in FIG. and central line 1m, 1b
You can freely answer incoming calls and make extension calls.

Taso L1 station 1i! To make a call to 1a or 1b, go off-hook and make a full dial "0" call, for example.
An empty one of the central office lines 1a and Ib is automatically selected and exchanged connection is made, and a call is made to the slave units 117a-7d (I goes off-hook and dials the entire number of the slave unit to make an exchange connection. It has become something that can be done.

Also, if the incoming calls from the office lines 1a and 1b fail, the office line circuit 3
The ringing signal generator 51 is controlled in response to the detection of the ringing signal by the telephone lines 1a and 3b, and a ringing signal equivalent to the ringing signal from the central office lines 1a and 1b is sent to the telephone lines 6e and 6f. is working and the speaker 114
If the off-hook is completed in response to this, the DC loop circuit will be closed, and the photocoupler P will
According to the detection power detected by C2 and PO2, the receiving station 1i! An exchange connection is made to 1a and 1b, and answering calls can be made freely.

In addition, the dial pulse when making a call is generated by the photocoupler PC2.
, PO2 is detected and the control unit 31 determines whether or not the detection power is interrupted, and performs the connection exchange according to the number of times of interruption.

In addition, when receiving a call from central office lines ia and 1b, handsets 78 to 7
A call is also made to d, which responds first and the next one is connected preferentially to the incoming station lines 1a and 1b.

In addition, when an extension call is received or fc receives a call from the door phone 10, the speaker 114 rings in response to the ring signal from the ring signal generator 51 as described above, so if you go off-hook in response, the exchange connection is established. is made, and answering calls can be made freely.

Regarding the above, if all operators are absent, switch SWI
If you set all the answering mode, the answering machine 22
a, 22b function as an answering machine, the incoming call detection circuit 1 responds to the ringing signal from the ringing signal generator 51 in response to an incoming call from the station @Ia, 1b.
30 detects all of these 1 answering device 22
a, 22b responds and closes the DC loop circuit by turning on contact a, so that the incoming station M1a, l
b, and is used to transmit OGM and to sound IGM.

Therefore, due to the answering machine @22a, 22b, all station lines 1a
, 1b can be answered freely, and each /
Even if calls from 1i5tlila and 1b rarely arrive, an answer is sent to each call.

Note that the same applies to incoming calls from the door phone 10, so it is possible to respond freely to a visitor that the call is not available.

The answering machine, the two answering devices 122a and 22b, do not require any money.
Only one of them may be used as an answering machine and the other as a telephone. For example, in the case of a residence/store, station 1! !
Iak is for exclusive use of the store, central office line 1b ffi is designated as shared between the residence and the store, and the telephone answering device 22a' is connected to the telephone line 6e.
If you connect all telephones to the telephone line 6f and operate the switch Ka k of the switch unit 42 when the store is closed, incoming calls from the office line 1a will be answered by the answering machine 22 independently of the main unit 2. while the station, ll1b
It is possible to make and receive calls through the handsets 78 to 7d and the residential side of the telephone, and the trouble of manually responding to incoming commercial calls after the store is closed is omitted, which is extremely convenient.

In addition, the main device 2 is connected to the commercial power source, so the main device 2 is connected to the commercial power source, so the main device 2 is connected to the main power source, so the main device 2 is connected to the main power source, so the main device 2 is connected to the central line 1a during a power outage.

1b, and can also be used as a slave unit for power outages.

In addition, since the answering devices 22a and 22b respond to an incoming call from an extension, the communication lines 6e and 6f are connected to the handsets γa to
This is convenient when the structure is constructed to a part far away from 7d.

The switching connection according to the closing of the DC loop circuit in response to the response of the answering machines f122a, 22b is performed by the control section 31 as follows.

That is, the processor in the control unit 31 controls the central office line 1a,
1b status, slave units 7a to 7d status, answering device 22a,
22b, the status of the exchange connection circuit 5, and the status of the 2W unit 21 are sequentially stored in the memory in the control section 31, and these data are checked to perform control 7 of the exchange connection circuit 5 and the 2W unit 21. It has become a central office line 1a.

The data in memory indicating the incoming call from 1b and the answering machine 2
2a, 221), the DC loop circuit is closed in response to the detected data, the relay circuit to be driven in the 2W unit 21 is determined, and in accordance with this, all control data is sent to the data bus 62, and the replacement liquid is performed. It has become.

However, the answering machines 22a and 22b are not limited to the one shown in FIG. 4, and may be a combination of a telephone and a normal answering machine, and can be used for the central office lines 1a, 1b and the telephone lines 6e, 6f, etc. The number of lines can be set arbitrarily depending on the situation, and the switch unit 42 can be provided according to the number of answering devices to be directly connected to the central office line. Various modifications can be made at one's discretion, such as taking excursions according to the following.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, the answering device can be accommodated as a handset of a key telephone device,
In addition to eliminating the need for special construction, it is also possible to handle multiple station lines without having to install an answering machine. Since answering is performed for all station lines, it is economical in terms of capital investment, and it is also possible to have answering for answering only for specific office lines as necessary, making it ideal for residential stores, multi-family residences, etc. It is very convenient and effective in various button telephone devices used under these conditions.

[Brief explanation of the drawing]

The figure shows all the embodiments of the present invention, Fig. 1 is a 7'O block diagram of the entire configuration, the second factor is the circuit height of the 2W unit, the third factor is the circuit height of the switch unit, and Fig. 4 is the answering device. It's because of the block. 1a, Ib...Station line, 2...Main device,
3a, 3b...office line circuit, 5...exchange connection circuit, 6a-6f...talk line, 7a-7dah
a.Slave unit, 21---2W unit, 27a, 2
2b °°°°'ll"3"-°""'1"9""ゝ0
゛131...Φ control section, 41a, 411) ・
... Jumper m child, 42-@san〇 switch unit, 51φ/fist/call A ■ generator, XC5, XC6. XS5. XS6-- @, latching relay, XI5゜XI6. SRI, SR2,A・
・ ・ ・ Relay, X (!51.
c6”, xc62. xs5, xs6, xs6, 5r11
．． 5r12°5r21. sr2, xi5
, xi52. xi61゜xi6 ,a・
・・e Relay contact, R9, R33゜R34, R37
~R40, R4B, R49... Resistor, PO
2, PO3...Photocoupler, Ka, sWl@ez
Switch, H8I, H82-...7 switch,
L...-9 line terminal.

Claims (1)

[Claims] A main device accommodating a plurality of office lines and a standard telephone are connected by only one pair of communication lines, and calls between the standard telephone and the office lines and extension lines are made through the communication lines and an exchange connection circuit in the main device. In the button telephone device operated through the standard telephone, means for detecting a ringing signal from the office line, generating a ringing signal equivalent to the ringing signal and transmitting it to the talking line, and closing a DC loop circuit by the standard telephone. means for detecting and connecting the telephone line to the incoming office line via the switching connection circuit; and means for bypassing the switching connection circuit to directly connect the telephone line to any of the office lines; A button telephone device, characterized in that the main device includes a switching means for stopping the detection function of the calling signal for the central office line, and an answering machine connected to a terminal side of the telephone line.