JPS5923961A - Controller of plural terminals - Google Patents

Abstract

PURPOSE:To attain the access to lots of accommodated terminals in plural terminal controllers with the same number, by constituting plural subscriber lines into the representation number system. CONSTITUTION:When an incoming call is given from a subscriber line 5 to a telephone terminal 1 while the telephone terminal 1 makes a call via a subscriber line 4, the incoming call is detected at an incoming call detector 28 to activate relays G, H, I, an output 31 of a timer 30 changes to High, and the incoming call to the telephone terminal 1 is detected at a CPU 53. Further, when the CPU 53 discriminates that the telephone terminal 1 makes a call with the information of an RAM 54, a buzzer 74 is activated through an I/O port 43 and the presence of the telephone incoming call is informed to the user. When the user depresses a changeover switch 75, the CPU 53 operates relays L, D to connect the telephone terminal 1 to the subscriber line 5 through contacts f, e, a loop detector 21, and contacts d2, d3, g. A DC holding circuit 76 is connected to the subscriber line 4 via contacts l, d4, d1, a to hold the subscriber line 4.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a subscriber hierarchy of a telephone exchange network, in which a plurality of subscriber lines or a pair of subscriber lines are combined into a representative number, and a plurality of subscriber lines of different types including telephone sets. This article relates to a multi-terminal control device that accommodates subscriber terminals.

Technical background In telephone exchange networks, terminals such as facsimiles and teletypes that have an automatic call receiving function do not require human intervention when making calls, so they can be used in a variety of new ways, such as for communication during absences. However, since such communication between non-telephone terminals can only be carried out between terminals of the same type, it is necessary that the terminals on the calling and receiving sides be of the same type. For this reason, a terminal switching control device (for example, Japanese Patent Application No. 55-042675) has been proposed.

When a call is received, the phone first receives the call, and if the phone does not answer within a certain period of time, another terminal, such as a stroke drawing terminal, automatically answers and sends and receives a signal indicating that the stroke drawing terminal has responded. This is a method of communicating by confirming each other's terminal types.

PRIOR ART AND PROBLEMS: In the conventional terminal switching control device, the selection of incoming calls to a telephone or a drawing terminal, etc. is determined based on whether the telephone responds within a certain period of time after receiving the call. ,
Even for incoming calls to calligraphy terminals, etc. that do not need to be answered, -
When a strange person picks up the telephone receiver, it is necessary to determine from the audible sound whether the other party is a person or a drawing terminal, making the operation complicated.

In addition, when calling this terminal switching control device from a regular telephone, if the person is absent or there is a delay in answering the call, the silver terminal etc. will respond, an audible signal will be sent, and charges will be charged. This may result in an undesirable response to the caller.

Purpose of the Invention In order to eliminate these drawbacks, the present invention provides a method for identifying a called terminal by transmitting/receiving a non-charging response (closing the loop without charging) and a terminal type identification signal or by the absence of a terminal type signal. The system is characterized by a billing response on the called side, and its purpose is to realize automatically selective incoming calls to multiple types of terminals without modifying the existing switching network.

Embodiment of the Invention FIG. 1 shows an example in which the multiple terminal control device of the present invention is applied to a telephone switching network, where 1 is a telephone terminal, 2 is a terminal other than a telephone, such as a facsimile, and 6 is a plurality of terminals according to the present invention. Terminal control device, 4 and 5 are subscriber lines organized into a representative number, 6
is an exchange, and 7 is a relay network. The multiple terminal control device 3 according to the present invention is installed inside the premises of the subscriber lines 4 and 5, and at the telephone terminals 1. It is installed between the facsimile machines 2 and controls incoming and outgoing calls from each terminal.

FIG. 2 shows an example of the internal configuration of the multi-terminal control device 6 according to the present invention, where 71 is an incoming call detector whose input is connected to the subscriber line 4 through a contact α, and whose output cuff 2 is connected to the I10 port 2.
Connected to 0. 76 is a timer, and the input is the incoming call detector 7
The output cuff 2 of 1 and the output 8 are connected to the I10 boat 20. 9 is connected to the subscriber line 4 through α which contacts the identification request signal transmitter and the partner abandonment detector 9, and the output 10 of the partner abandonment detector 9 is connected to the I10 boat 20.

11 is a billing response device which connects the subscriber line 4 through a contact point a.
connected to. 12 is an identification request signal receiver, its input is connected to the subscriber line 4 through contacts c and a, and its output 16 is connected to I
10 is connected to port 20. 14 is a type identification signal receiver whose input is connected to the subscriber line 4 through a contact C1α, and whose receiving outputs 15 and 16 are connected to the I10 port 20. 1
7 is a type identification signal transmitter whose output is connected to subscriber line 4 through contacts c and a, and transmission inputs 18 and 19 are connected to I10 port 2.
Connected to 0. 21 is a loop detector with contacts d2. d
11cL through subscriber line 4 still contact dos ds*
It is connected to the subscriber line 5 through 9 and to the telephone terminal 1 through contacts e and f, and its output 22 is connected to the I10 port 2o.
connected to. 26 is a call detector whose input is contact e
, f to the telephone terminal 1, and its output 24 is connected to the I10 port) 20. Reference numeral 25 denotes an activation signal generator, which is connected to the telephone terminal 1 through a response detector 26 and a contact f.

The output 27 of the response detector 26 is connected to the I10 port) 20. 28 is an incoming call detector whose power is connected to the subscriber line 5 through a contact g, and whose output 29 is connected to the 110 boat 43. 6o is a timer whose input is connected to the output 29 of the incoming call detector 28 and whose output 31 is connected to the 110 port 46. Reference numeral 62 denotes an identification request signal transmitter and a partner abandonment detector, which are connected to the subscriber line 5 through a contact ATg, and an output 66 of the partner abandonment detector 62 is connected to the I/'0 port 4.
Connected to 6. 34 is a non-charging response device with contact h+(
It is connected to the subscriber line 5 through l. 65 is an identification request signal receiver, the input of which is connected to subscriber line 5 through contact t+Q.
, its output 36 is connected to an I10 port 46 .

37 is a type identification signal receiver, and its human power is contact point i.

g to the subscriber line 5, the received outputs 38, 59 are I/.

Connected to boat 46. 4o is a type identification signal transmitter whose output is connected to the subscriber line 5 through the contact s+U, and whose transmission inputs 41 and 42 are connected to the I10 boat 43. 44 is a loop detector which connects to subscriber line 5 through contacts d4+d3tff or to subscriber line 4 through contacts d4+dl+α.
Also, a reverse detector 46. It is connected to facsimile 2 through contact Lk, and its output 45 is connected to I/'0 port 4.
Connected to 6. An output 47 of the reverse detector 46 is connected to a partner response lamp 68. 48 is a call detector whose input is connected to the facsimile machine 2 through contacts j and k, and whose output 49 is connected to the I/10 board 46. 5o is a start signal generator, and response detector 51. It is connected to the facsimile 2 through contact k. The output 52 of the response detector 51 is r
10 boat 43. 53 is a microprocessor (hereinafter abbreviated as CPU) that controls this system, and it accesses random access memory (RAM) through a bus.
) 54, a read-only memory 55 that stores the control zrogram, and I10 ports 2° and 4 that perform input/output.
Connected to 6. 56 to 65 are connected to the I10 boat 46 through relays A to J, respectively. 66 is a selection signal generator connected to dial 67, output is contact da*ds+U
It is connected to the subscriber line 5 through the contact point d4, or to the subscriber line 4 through the contacts d4, dl, and a. 70 is + through resistor 69
I10 boat 46 with the 5V power supply and the operational status input line of the D relay of 59 connected to ground through contact d5.
connected to. 74 is a buzzer and input is r10 port 46
connected to. 75 is a changeover switch and I10 port 43
connected to.

76 is a DC holding circuit with contacts t+ d4 + dl H7
7 through subscriber line 5, or contact point Lr d4 r d
It is connected to the subscriber thread button 4 through l+α. 77.7
8 is a relay L, which is connected to the I10 boat 43. 7
9 is a busy lamp connected to the I10 boat 46. 8
0 is a subscriber line corresponding section, and 81 is a terminal corresponding section.

Referring to FIG. 2, the incoming call to the SIMI talk terminal 1 will be explained. If telephone terminal 1 is idle and subscriber m4 receives a call,
The incoming call detector 71 detects a DC inversion or a 16Ht calling signal, the output cuff 2 is inverted from low to high, and the timer 76 for about 3 seconds is activated.

The CPU 5'5 detects through the I10 port 20 that the output cuff 2 of the incoming call detector 71 has changed from low to no, and connects the relay A of 56, the relay B of 57, and the relay C of 58 via the I10 port 46. and operate it. Contact point α.

According to the operations b and c, the subscriber line 4 is connected to the identification request signal transmitter 9, the callee abandonment detector 9, and the non-charging response device 11 through the contacts a, , b. The non-charging answering device 11 is used as a trunk for receiving calls toll-free for numbers 100, 104, 10!15@, etc. It also uses the same principle as that known for magic phones, etc., and has a direct current reverse function. It does not return the money and sets up a transmission route with the other party while stopping billing from the father exchange machine. This allows communication with the other party without charge, so the identification request signal transmitter 9
The output of reaches the calling party. The identification request signal transmitter 9 is a signal that requests the calling side to send a type identification signal, and can use various signals within the voice band as the signal.

For example, 1750±100Hz, 5QObtt/seσ
Or 1750±400Hz, 1200bit/s
A specific code such as ENQ may be sent with an FS signal such as ec, or a voice band tone signal such as 1750
1h/sec)-on, etc. may be sent. These are determined to be transmitted for a certain period at a certain period, for example, 1 second in a 6 second period, and when there is no signal, a type identification signal, which is a response to an identification request signal, is transmitted to the originating side.

Of course, if these two codes use different frequency bands, it is possible to transmit and receive them simultaneously. In particular, if we use 400Hz amplitude modulated at 16Hz as this identification request signal and send this for 1 second every 6 seconds, this will be the same signal as the ringback tone sent from the exchange while the other party is calling. Therefore, when a call is made from an ordinary telephone to this multi-terminal control device, the state is the same as when calling an ordinary telephone, and there is an advantage that the caller does not feel strange.

The subscriber line 4 is connected to an identification signal receiver 129 types, 142 types identification signal transmitter 1 through contacts α and C.
Connected to 7. When a call is made from a telephone, no type identification signal is sent, and timer 73 is activated approximately 3 seconds after the incoming call is detected.
A pulse is output to the output 8 of the CPU 53 and detected by the CPU 53 through the I power port 20.

fi, CP because the type identification signal was not received.
U53 determines that the call is for the telephone set, sets relay C of 58 to an inoperable state, and disconnects identification request signal receiver 12, type identification signal receiver 141, and type identification signal transmitter 17. Next, check the status of relay D of 59 through the input line 70 connected to contact dI+, and if the input line 70 is high, it remains as is; if it is low, relay D of 59 is inactivated, and subscriber line 4 is connected to the telephone. Make sure it is on the Terminal 1 side. Next, the relay F of 61 is activated, and the response detector 26 . 16H to telephone terminal 1 through contact f
g tSends a 1 second call signal every 3 seconds. When the telephone terminal 1 is taken off-hook and answers, the response detector 26 detects that a DC loop is formed, and the output 27 changes from low to high, which is detected by the CPU 55. cpri5
5 deactivates the relay F of 61, activates the E relay of 60, deactivates the B relay of 57, and stores in xAM54 that the telephone terminal 1 is in use.

The subscriber line 4 is connected to the telephone terminal 1 through contacts αIdll dl r loop detector 21° and contacts g and /. The DC loop of the telephone terminal 1 sends a billing response to the exchange 6, and billing is started, allowing a conversation with the calling party.

When the phone call ends and the handset of telephone terminal 1 is put on the hook, the loop current changes from about 50 to 2QmA to 07rLA.
No, the loop detector 21 detects this and its output 22
changes from low to high. The CPU 56 considers this to be the end of the call, deactivates relay A 56 and relay E 60, stores in the RAM 54 that the telephone terminal is not in use,
The multiple terminal control device 3 returns to its initial state.

In addition, when the caller disconnects while the telephone terminal 1 is ringing, that is, before the telephone terminal 1 responds, the end of the subscriber line 4 becomes open, and the output voltage of the identification request 4i transmitter 9 increases and the output current decreases. do. This is detected by the partner abandonment detector 9, and its output 10 changes from low to high. cpv this
55 detects, relay A 56, relay B 57, and relay F 61 are made inoperable, and composite terminal control device 3 is returned to its initial state.

Next, a case will be described in which there is an incoming call from a telephone to the subscriber line 5 while the telephone terminal 1 is talking through the subscriber line 4, contacts α, dl, dl + loop detector 21, contacts g, /.

When there is an incoming call to the telephone terminal 1 on the subscriber line 5, the incoming call detector 28 detects the incoming call, and the relay G of 62 and the relay H9 of 66 are activated.
The relay I of 64 is operated, and the output 61 of the timer 60 changes to high, indicating that the call has arrived at the telephone terminal 1.
The procedure until the call is detected by the subscriber line 56 is the same as the procedure for receiving a call to the subscriber line 4 described above. After that, when the CPU 55 identifies that the SIMI talk terminal 1 is in a call based on the information in the RAM 54,
A buzzer 74 is sounded through the I10 port 46 to notify the user that there is an incoming call. When the user presses the changeover switch 75, the cpu 53 switches relays L and 5 of 77.
9 relay D is operated and telephone terminal 1 is connected to contact f1'
*Loop detector 21. Contact d2 # dB * 1
It is connected to the subscriber line 5 through 7. As a result, a billing response is made to the subscriber line 5 using the DC loop of the telephone terminal 1, and a call can be made to the called party to the subscriber line 5. On the other hand, due to the operation of L') relay 77, the DC holding circuit 76 is connected to the contact point t.
Connected to subscriber line 4 through Hd4 + 4 + α,
Subscriber line 4 is put on hold. When the selector switch 75 is pressed again, the CPU 53 disables the IJ relay (59), connects the subscriber line 4 to the telephone terminal 1, and connects the subscriber line 5 to the DC holding circuit 7.
Connect to 6. When the handset is turned on-hook, it is detected by the loop detection circuit 21, all relays are made inactive, and the multi-terminal control device 6 returns to its initial state.

Above, we have described the case where there is an incoming call to the subscriber line 4 and the case where there is an incoming call to the subscriber line 5 while the subscriber line 4 is talking.
Regarding the incoming call to subscriber line 5 and the incoming call to subscriber line 4 while subscriber m5 is talking, 59 l) I
The J relay operates in the same sequence, only the operation and non-operation are reversed.

Next, a case will be described in which there is an incoming call to the facsimile 2 on the subscriber line 5. When an incoming call is received on the subscriber line 5, it is detected by the incoming call detector 28 and sent to the CPU 53 through the I10 port 43.
is detected, and a timer 6° of approximately 3 seconds is activated. cpv
55 operates the relay G of 62 and the relay I of the relay H 264 of 66, the non-charging response device 64 responds, and the identification request signal transmitter 62 sends out an identification request signal. The calling side accepts the identification request signal, and when the identification request signal is cut off, sends a facsimile 2 type identification signal. This signal is received by a type identification signal receiver 67 and its output 68 becomes NO. The CPU 55 detects this, learns that the call is for a facsimile, confirms from the memory in the RAM 54 that the facsimile is empty, and operates the relay K at 78. As a result, the activation signal generator 50 is activated by the response detector 51.
．． It is connected to facsimile 2 through contact k and activates facsimile 2. When the facsimile 2 responds, the output 52 of the response detector 51 changes to high υ, and the CPU 53 detects the response of the facsimile 2 and operates the relay J of 65.
Relay I of relay H166 and relay K of 78 are made inactive.

Therefore, the facsimile 2 has contacts Lj l reverse detector 46 . Loop detector 44. Contact d4. ds, Q
It is connected to the subscriber line 5 through the facsimile 2, and the DC loop of the facsimile 2 sends a billing response to the exchange B, allowing communication. When the communication is finished and Sifaximili 2 disconnects the DC loop,
The loop detector 44 detects that the DC loop current has become O, and its output 45 goes high! 1lCPU5
”) makes all relays inoperable, and the multi-terminal control device 6 returns to its initial state.

Incoming calls to the subscriber line 4 operate in the same sequence except that the operation of the D relay 59 changes.

As the type identification signal, a signal within the voice band, for example, 175
0±110OH, 500bit/sec, or 1700±400Ht.

Fs of 1200 bit/sec (No. 8, tone signal,
You can use the PE signal, which is dial number 41 on a telephone. For example, when using the PE signal, take the signal 69711, which means "1", and the signal 1209Hg as u1o.
It is conceivable to send the oms and send it to a facsimile.

Next, a case where the facsimile 2 receives a call on the subscriber line 4 while the facsimile 2 is communicating through the subscriber line 5 will be described. A call arrives at subscriber line 4 56 , 57 .

Relays A, E, and C of 58 are operated, and when the type identification signal is received, the operation is similar to that described for receiving a call to the subscriber line 5 until the output 15 of the type identification signal receiver 14 becomes high. Here, the CPU 53 detects that the fax machine 2 is in use based on the memory of the R7Af 54, and sends a pulse to the input 19 of the type identification signal transmitter 170 to signal that the terminal is busy. 94 meaning "#"
Send signals of 1Hz and 1477Hz and 100 to 71J to disable relays A, B, and C of 56, 57, and 58 and return them to their initial state. On the other hand, the calling side receives the PE signal "#", detects that the other party is busy, and disconnects.

Even when a facsimile call is received on the subscriber line 5 while the facsimile 2 is communicating on the subscriber line 5, the same procedure is followed except that the operating state of the relay D 59 is different.

Furthermore, the case where a call is sent to facsimile 2 while telephone terminal 1 is in use, or the case where telephone terminal 1 receives a call while facsimile 2 is in use, is exactly the same as the case of an incoming call when both lines are idle, as explained earlier. .

Next, a call from the telephone terminal 1 will be explained.

When the telephone terminal 1 is off-hook, the call detector 26 detects the formation of a DC loop through the contact e, and the output 24 goes high, which is detected by the CPU 55. CPU
55 operates relay A of 56, relay G of 62, and relay E of 60 depending on the operating state of relay D of 59, and stores in R, 4M 54 that the telephone terminal 1 is in use. With this, the stain filling terminal 1 is connected to the contact/l'l loop detector 21. Contact d2. d1. a or d2゜d3117
It is connected to subscriber line 4 or 5 through.

Switchboard 6 issues a dial tone, telephone terminal 1 also sends a dial signal, connects to the other party, makes a call, and when the call ends and connects, loop detector 21 detects a break in the DC loop.
The CPU 56 detects this and deactivates the relay that is in operation, and the multiple terminal control device 6 returns to its initial state.

Next, transmission from facsimile 2 will be explained. When the facsimile 2 closes the DC loop, +j is passed through the contact and detected by the call detector 48, detected by the CPU 56, and c
pv55 is 64 relays I or 58 relays C265
1, 56 relay A or 62 relay G are operated. This axis 7 axis 2 is the contact *: Ir
! j perspective detector 46. Loop detector 44. contact d
It is connected to subscriber line 5 or 4 through 4y dB+gp or d4+dl+α. Also, contact point i.

g through the identification request signal receiver 35 or 12.g. Type identification signal receiver 67 or 141 type signal transmitter 40
or 17 is connected to subscriber line 5-j or 4. Next, the case where a call is made from the subscriber line 5 will be explained. After the facsimile 2 is connected to the exchange 6 through the subscriber line 5, the dial 67 is operated and the selection signal generator 66 transmits the telephone number of the other party to the exchange, and the output 36 goes high. CPU
55 detects this high signal, and outputs a pulse to the input 41 of the type identification signal transmitter 40 through the I10 port 43 when the identification request signal is cut off and the output 66 becomes low.
Type identification signal indicating facsimile 2, e.g. PB Tsukuda "
1” is sent. In contrast, the called party's facsimile 2
When the caller responds, a DC reverse signal is sent from the exchange 6, detected by the reverse detector 46, and the other party response lamp 68
lights up. By seeing this and operating the facsimile 2, communication is made with the facsimile of the called party, and when the communication is completed, the DC loop of the facsimile 2 is opened, the loop detector 44 detects the loop open, and the output 45 Yop
The CPU 55 deactivates all relays, and the multiple terminal control device 6 returns to its initial state.

In the above description, when the type identification signal indicating facsimile 2, e.g. pE signal "1", is sent, if the facsimile on the called side is in use, a signal indicating busy, e.g.
A B error signal "#" is sent to the called party. The signal is received by the type identification signal receiver 67, and a pulse is output to its output filter 9. The CPU 53 detects the pulse, deactivates all relays, sets the multiple terminal control device 6 to the initial state, and illuminates the G-lamp 79 for a certain period of time via the I10 boat 46 to reach the operator. Indicates that the calling facsimile is busy.

The configuration and operation of the multiple terminal control device 3 with two subscriber lines and two types of terminals have been explained above, but in the case of m subscriber lines (m≧6) and terminal types nff1 (n≧6), 5
Relay Df: 9 is changed to a tnxn crossbar switch, etc., and the number of subscriber line corresponding parts 80 in FIG. It can be realized.

It should be noted that each of the above-mentioned components is implemented using specific examples as shown below. In the identification request signal transmitter (9°62), 5QQ bit/sec is used in general data communication as a signal requesting the calling side to send a type identification signal.
Alternatively, use the transmitting section of a modem with 12006<t/sgc (for example, Oki Electric 1200M-1-F modem, etc.), and use the output of a sine wave oscillator such as a Wien bridge oscillator circuit as a voice band tone signal using a CMOS analog gate or Two sets of sine wave oscillators such as Wien bridge oscillator circuits are used as the identification request signal, and 400 Hz and 1
Generate a 61h sine wave, modulate p400Ht at 16Hg using a general amplitude modulator using a transistor, etc., and send this signal to an inverter and a capacitor via a CMOS analog gate.

An oscillator circuit such as a resistor that uses an intermittent oscillator output that is high for 1 second and low for 2 seconds is used. For example, the response detector (26, 51) can be made by connecting the coil and battery of an AC insensible relay in series, or by connecting the light emitting diode side of a photocoupler (for example, NEC PC2001B, etc.) in parallel with an AC bypass capacitor. A device that connects a battery and a resistor in series and detects a DC loop by closing a relay contact or turning on a phototransistor is applied. The loop detector (21, 44) may be a photocoupler (for example, PC20 manufactured by Nippon Kamekei).
Insert a light emitting diode (such as 01B) in series in the loop,
A detector is used that detects the loop current when the phototransistor turns on and off, and when the phototransistor changes from on to off, starts a timer and outputs a pulse of about 1 m8. Opponent abandonment detector (9, 32)
For example, the output voltage or output current of the identification request signal transmitter (9, 32) is rectified by a diode, etc. and smoothed by a capacitor, and the rectifier circuit output voltage is combined with the output voltage of the identification request signal transmitter (9, 32). , 32) with a reference voltage preset according to the rectifier circuit output voltage when the load is about 600Ω,
A detector is applied which detects and outputs that the end of the subscriber line 4 is open when the voltage is compared by a voltage comparison circuit and the output of the rectifier circuit is equal to or smaller than the reference voltage. As the DC holding circuit (70), for example, a relay coil or a circuit that obtains a DC resistance of 200Ω using a resistor is used. Type identification (Th number transmitter (17, 40) and receiver (14, 37) is 5QQbit/Sec or 1200b used for general data communication.
tt/sec modem (e.g. Oki Electric 1200Jf-
1-17 modem) transmitter and receiver, or a transmitter that uses a CMOS analog gate to intermittent the output of a sine wave oscillator using a Wien bridge oscillation circuit, and a tone receiver that consists of a filter, limiter, and rectifier circuit, or PR oscillator used for dial oscillation of a button phone (for example, μPC757C manufactured by NEC * MB45 manufactured by Fujitsu)
IC such as 07x, capacitor, and resistor.

(consisting of crystal, etc.) and PE receiver (for example, Silicon Systems 1-chip PB receiver 5SI201, etc.)
is used. The identification request signal receiver (12°65) uses a 300 bjt/s signal used for general data communication.
ea or 1200 bit/sec mochi A+7) receiver, or tone receiver consisting of a filter, limiter, and rectifier circuit, or 400Hg)-tone detector consisting of an MJOHz filter, limiter, and rectifier circuit, and operates when a tone is detected. Approximately 0.8 second timer and approx.
An approximately 0.4 second timer that starts operating when the second timer finishes operating, a slip 70 knob that remembers that the tone detection output has been cut off while the approximately 0.8 second timer is operating, and an approximately 0.
．． Combining the outputs of these two 7-lip flops with a flip-flop that remembers that the tone detection output was cut off while the 4-second timer is running, the tone detection output is cut off while the 0.8-second timer is running. If the tone detection output is cut off while the timer is running for about 0.4 seconds, the gate circuit generates an output. Rather than a timer circuit that resets the lip-flop, a circuit that detects the presence of a 400 Hg signal for about 1 second is used. Start signal generator (25,
50) is a 16Hz sine wave oscillator made of a Wien bridge oscillator circuit, an inverter, a capacitor, and a resistor that generates a signal of 91 seconds on and 2 seconds off, and this signal generates a 16Hz sine wave. It can be configured with a CMOS analog gate that turns on and off and an amplifier that amplifies this output to about 70V. The call detector (23, 48) is, for example, one in which a relay coil and a battery are connected in series,
Or a photocoupler (for example, NEC PC200)
A detector is used that connects the light emitting diode (such as 1B) in series, a battery, and a resistor, and detects a DC loop between relay contacts or by turning on a phototransistor to detect a call.

Although the embodiment has been described above in which a plurality of subscriber lines organized into a representative number are accommodated, the present invention can be similarly applied to the case of a pair of subscriber lines. FIG. 3 is a diagram showing the configuration of an embodiment in which the present invention is applied to a pair of subscriber lines. The same symbols as in FIG. 2 indicate the same parts. 82 is 59 in Figure 2
The relay M corresponding to the relay D is connected to the I10 boat 43.

The contact m1 connects subscriber #3!4 to the loop detector 21 . to the telephone terminal 1 via contacts e, f or to the loop detector 44. Reverse detector 46. It is connected to the facsimile 2 via contacts j and k.

Further, the contact m2 of the relay M 82 transmits the operating state of the relay u tD to the CPU, and has the same function as the contact ds in FIG. 2.

Incoming calls to the telephone terminal 1 will be explained with reference to FIG.

When the telephone terminal 1 is idle and there is an incoming call on the subscriber line 4, the incoming call detector 71 detects DC inversion or the calling code 16#g, and the output cuff 2 is inverted from low to high, and approximately 6
The second timer 73 is operated.

The cpU 55 detects through the I10 boat 20 that the output cuff 2 of the incoming call detector 71 has changed from low to high, and
6 relay A, 57 relay B, 58 relay C to r1
0 port 43, and stores in the RAM 54 that the subscriber line 4 is in use. By the operation of the contacts α, b, c, the subscriber line 4 is connected to the identification request code transmitter 9, the callee abandonment detector 9, and the non-charging response device 11 through the contacts α, b. The non-charge answering device 11 is used as a toll-free trunk for incoming calls such as numbers 100, 104, and 105, and uses the same principle as that known for magic phones, etc., and returns DC reverse. This method sets up a transmission path with the other party while stopping billing at the exchange 6. This allows communication with the other party without charge, so the output of the identification request code transmitter 9 reaches the calling party. The identification request Gi signal transmitter 9 sends a signal requesting the calling side to send a type identification signal, and various signals within the voice band can be used as the identification signal. For example, 1750±110OH.

500bit/sec or 1750±400Hz
, 1200 bit/sec or the like may be used to send a specific code, such as ENQ, or a voice band tone signal, such as a 1750 Hz 1 second tone. These are determined to be transmitted for a certain period at a certain period, for example, 1 second in a 6 second period, and when there is no key, the type identification signal, which is a response to the identification request signal, is transmitted to the originating side. . Of course, if these two signals use different frequency bands, they can be transmitted and received at the same time. In particular, if the next signal transmitter 9 transmits this identification request signal as an identification request signal at 400 Hz with amplitude modulation of 16 Hg for 1 second every 6 seconds, this is the ring signal sent from the exchange while the other party is calling. Since the code is the same as the back tone, calls made from a general telephone to this multi-terminal control device 6 will be in the same state as calling to a general telephone, and the advantage is that it will not make the caller (i) feel strange. There is.

The subscriber line 4 passes through the contacts α and C to the identification bag request signal receiver 1 unit 129 types identification signal receiver 142 types identification signal sender 1
Connected to 7. When a call is made from a telephone, no type identification signal is sent, and the timer 76 is activated approximately 3 seconds after the callee is detected.
A pulse is output to output 8 of cpU5'! through r10 boat 20. > is detected. Since the stopper identification signal was not received, the CPU 53 determines that the call is for a telephone, sets the relay C of 58 to an inoperable state, and sends the identification request code transmitter 12° and type identification signal receiver 142 type identification code. Separate the feeder 17. Next, the state of the relay M is checked through the information-70 connected to the contact m2, and the information line 7
If 0 is high, it remains as is, and if it is low, t1- is relay M
is made inactive and the subscriber line 4 is placed on the telephone terminal 1 side. Next, the relay F of 61 is activated, and the response detector 26 . A calling code of 16 Et and a 1-second transmission period of 6 seconds is sent to the telephone terminal 1 through the contact f. When the telephone terminal 1 is off-hook and responds, the response detector 26 detects that a DC loop has been formed, and the output 2
7 changes from low to high and is detected by the CPU 55. C
The PU 56 deactivates the relay F of 61, activates the E relay of 60, deactivates the B relay of 57, and deactivates the RAM 54. It is stored that the telephone terminal 1 is in use.

Subscriber line 4 has contact α, ? ? J, loop detector 21.
It is connected to the telephone terminal 1 through contacts e and f. Telephone terminal 1
The DC loop sends a billing response to the exchange,
Billing will start and you can talk to the calling party. When the telephone call ends and the handset of the mobile terminal 1 is put on the hook, the loop current changes from about 50 to 20 mA to Q mA, which is detected by the loop detector 21 and its output 22 changes from low to high. cprt55 considers this to be the end of the call56
Relay A of 60 and relay E of 60 are made inactive, and RAM54
, it is stored that the subscriber line 4 and the telephone terminal 'a are free, and the multiple terminal control device 6 returns to its initial state.

In addition, if the caller disconnects while the telephone terminal 1 is on the line, i.e., before the telephone terminal 1 responds, the end of the subscriber line 4 will be open, and the output voltage of the identification request signal transmitter 9 will rise and output. Current decreases. This is detected by the partner abandonment detector 9, and its output 1U changes from low to high. The CPU 55 detects this and relays 56 and 57 relay A and 57 relay B, respectively.
, 61 are made inoperative, the fact that the telephone terminal 1 and the subscriber line 4 are in full condition is stored in the R,4Af 54, and the multiple terminal control device 6 is returned to its initial state.

Next, a case will be described in which there is an incoming call to the facsimile 2 on the subscriber line 4. When subscriber w4 receives an incoming call, it is detected by the incoming call detector 71 and sent to the CPU 5 through the I10 port 20.
5, and a timer 76 of about 6 seconds is started. C.P.
U is 56 relay A, 57 relay B, 5B relay C
RAAI to indicate that subscriber line 4 is in use.
54, the non-charging response device 11 responds, and the identification request signal transmitter 9 sends an identification request No. 41. The calling side receives identification request No. 41, and when the identification request signal is cut off, sends a facsimile 20 type identification signal. This signal is received by the ridge identification signal receiver 14, and its output 15 goes high.

The CPU 53 detects this, knows that it is an N call to the facsimile 2, and stores it in the memory of the RAM 54.
After confirming that 78 is empty, relay K of 78 is activated. Accordingly, the activation signal generator 50 is activated by the response detector 51 .
It is connected to facsimile 2 through contact k and activates facsimile 2. When the facsimile 2 responds, the output 52 of the response detector 51 changes to high, and the CPU 53 detects the response of the facsimile 2 and operates the relay 1 of 65.
Relay I of No. 3 relay H264 and relay K of No. 78 are inoperable, and RAM 5 indicates that facsimile 2 is in use.
Store in 4. Therefore, facsimile 2 has +
3+reverse detector 46. Loop detector 44. Contact m1
．． (The DC loop of the facsimile 2 is connected to the subscriber line 4 through the facsimile 2, and the DC loop of the facsimile 2 makes a billing response to the exchange 6, allowing communication. When the communication is finished and the facsimile 2 disconnects the DC loop, the loop detector 44 detects the DC loop current. 0 is detected, its output 45 goes high and the CPU
55 disables all relays, stores in RAM 54 that subscriber line 4 and facsimile 2 are free, and multiple terminal control unit 86 returns to its initial state.

A signal within the audio band can be used as the type identification signal.
For example, 1750±110OH, 500bit/sec
, or 1700±4001k, 1200b
It/sec FS signals, tone signals, and PR multiplied signals, which are the dial signals of a butshuphone, can be used. For example, when using PR double signal, 697H which means "1"
It is conceivable to send, for example, 1.00 mg of No. 45 of Z and 1209#g and allocate this to a facsimile.

Next, a call from the telephone terminal 1 will be explained.

When the telephone terminal 1 is off-hook, the call detector 23 detects the formation of a DC loop through contacts f and e,
The output 24 becomes high.9 It is detected by the CPU 53. C.P.
U55 confirms from the memory of RAA (54) that subscriber line 4 is vacant, deactivates relay M of 82, activates relay A of 56 and relay E of 60, and stores subscriber line 4 and telephone terminal in RAM 54. 1 is in use.

As a result, the terminal 1 contacts the contact f1'l loop detector 21. contact? nl, (connected to subscriber line 4 through L. Dial tone is sent from exchange @6, dial number 41 is sent from telephone terminal 1, connects to the other party, makes a call, and when the call ends and goes on-hook, the DC loop The disconnection is detected by the loop detector 21, the CPU 55 detects this,
The relay is inactivated and the fact that the subscriber line 4 and the telephone terminal 1 are vacant is stored in the RAM 54, and the multiple terminal control device 6
returns to its initial state.

Next, the transmission from facsimile 2 will be explained. When the facsimile 2 closes the DC loop, it is detected by the call detector 48 through the contact j, which is detected by the CPU 55,
The CPU 53 informs the RAM 54 that the subscriber line 4 is connected.
I confirmed from my memory that the CPU 55 is a 58 thread C965.
relays J and A of 56 are operated, and it is stored in RAM 54 that subscriber line 4 and facsimile 2 are in use. With this, the fax machine 2 is connected to the contact point j,
! J-verse detector 46. Loop detector 44. contact ml
, (connected to the subscriber line 4 through L.

Further, through the contacts α and b, an identification number receiver 122 types identification signal receiver 149 types identification number transmitter 17 is connected to the subscriber line 4. After the facsimile 2 is connected to the exchange 6 through the subscriber line 4, the dial 67 is operated and the selection signal generator 66 sends the desired telephone number to the exchange 6. When the called party is connected and an identification request signal is sent from the called party, it is received by the identification request signal receiver 12 and the output 13 goes high.

The cpv55 detects this high signal (No. 8), outputs a pulse to the input 18 of the type identification signal transmitter 17 through the I10 port 20 at the point when the identification request signal is cut off and the output 16 becomes low, and outputs a pulse to indicate the facsimile. Class identification code, e.g. P
R times signal 1" is sent out. On the other hand, when the facsimile on the called side responds, a DC reverse signal is sent from the exchange 6, detected by the reverse detector 46, and the callee response lamp 68 lights up. Seeing this, the facsimile machine 2 is operated to communicate with the called facsimile machine, and when the communication is completed, the DC loop of the facsimile machine 2 is opened, and the loop detector 44 detects that the loop is open. Detected by the output 45 by the cpv 56, the CPU 53 deactivates all relays for the subscriber line 4. The fact that the facsimile machine 2 is free is stored in the RAM 54, and the multiple terminal control device 3 returns to its initial state.

The above describes the configuration and operation of the multiple terminal control device 6 with one subscriber line and two types of terminals.
n > 3), use a multi-contact rotary relay for relay M at 59, or increase the number of relays M at 59, and
If the number is n-1, which is the terminal corresponding section 810 in the figure, the control procedure can be realized in the same manner as described above. Furthermore, although this multiple terminal control device has been described as being installed on the subscriber side of the subscriber line, it goes without saying that it will operate in exactly the same way even if it is installed on the exchange side of the subscriber line.

As described in detail of the invention, even if a call is received from any type of terminal on any of a plurality of subscriber lines, the incoming call can be automatically activated to the same type of terminal. By configuring the line with a representative number, multiple terminals housed in this multi-terminal control device can be accessed using the same number, making the operation extremely simple. In addition, there is no need to change the conventional telephone network, and the sequence for incoming calls from ordinary telephones is the same as that of the conventional telephone network, so it is easy to introduce.

[Brief explanation of drawings]

FIG. 1 shows an example in which the multiple terminal control device of the present invention is applied to a telephone switching network, and FIG. 2 shows the internal configuration of the 4XIJI terminal control device according to the present invention applied in the case of accommodating subscriber lines organized in a representative number. Embodiment FIG. 6 is an embodiment of the internal configuration of a multiple terminal control device according to the present invention applied to accommodate a pair of subscriber lines. DESCRIPTION OF SYMBOLS 1...Telephone terminal, 2...Facsimile, 3...Multiple terminal control device, 4, 5...Subscriber line assembled to a representative number, 6...Switching machine, 7...Relay network , 8... Output of timer 73, 9... Identification Yasugi No. 46 transmitter and opponent abandonment detector, 10... Output of opponent abandonment detector, 11... Non-charging response device, 12. ...Identification request signal receiver, 16...Output of the identification request signal receiver 12,
14...Type identification signal receiver, 15.16...Output of type identification signal receiver 14, 17...Type identification signal transmitter, 18.19...Input of type identification signal transmitter 17, 20... r10 port, 21... loop detector, 22... output of loop detector 21, 26... call detector, 24... output of call detector 26, 25...・
Activation signal generator, 26... Response detector, 27... Output of response detector 26, 28... Incoming call detector, 29...
- Output of incoming call detector 28, 30... timer, 61...
- Output of timer 60, 32... Identification request signal transmitter and partner abandonment detector, 33... Output of partner abandonment detector 62, 64... Non-charging response device, 65...
Identification request signal receiver, 66...Identification request signal receiver 6
5 output, 67...Type identification signal receiver, 38.39
...Output of type identification signal receiver, 40...Type identification signal transmitter, 41.42...Type identification signal transmitter 40
input, 46... I10 port, 44... loop director, 45... output of loop detector 44, 46...
Reverse detector, 47... Output of reverse detector 46, 48... Call detector, 4 so... Output of call detector 48, 50... Starting signal generation, device, 51... - Response detector, 52... Output of response detector 51, 53... Microb a processor (cprt), 54... Random access memory (RAM), 55... Read only memory, 56... relay dial, 68... caller response lamp, 69... resistor, 70... contact information line of relay D, 71... incoming call detector, 72... output of incoming call detector 71, 76... Timer, 74... Buzzer, 75
... Selector switch, 76... DC holding circuit, 77.
...Relay L178...Relay 179...Busy lamp, 80...Subscriber line support section, 81...End book support section, 82...M relay

Claims (2)

[Claims] (1) In a multi-terminal control device that accommodates a plurality of different types of subscriber terminals including telephones in the subscriber hierarchy of a telephone exchange network and controls incoming and outgoing calls of the subscriber terminals, A means for accommodating a plurality of subscriber terminals of different types, detecting a call originating from the terminal, and identifying the type of the terminal; means for connecting the terminal to a nuclear access wire; means for receiving an identification request signal from the called party after connection;
After receiving the identification request signal, means for transmitting a type identification signal corresponding to the calling terminal type; and responding to the incoming call without charge;
means for transmitting an identification request signal and operating a type identification signal receiver for a certain period of time; and means for activating a subscriber terminal corresponding to the type identification signal upon receiving the type identification signal;
means for activating a telephone set housed in the multi-terminal control device when a type identification signal is not received within a certain period of time, and a response of the terminal or the telephone set corresponding to the type identification signal that has been activated; and means for making a charge response based on the detection of the response, wherein the subscriber line is comprised of a plurality of subscriber lines grouped into a representative number. (2) In a multi-terminal control device that accommodates a plurality of different types of subscriber terminals including telephones in the subscriber hierarchy of a telephone exchange network and controls incoming and outgoing calls of the subscriber terminals, the subscriber line and the A means for accommodating a plurality of subscriber terminals of different types, detecting calls from the terminals, and identifying the terminal type; means for connecting a terminal to the subscriber line; means for receiving an identification request signal from the called party after connection; and means for transmitting a type identification signal corresponding to the calling terminal type after receiving the identification request signal. means for responding to an incoming call without charge, transmitting an identification request signal, and operating a type identification signal receiver for a certain period of time; and upon receiving a type identification signal, activating a subscriber terminal corresponding to the type identification signal. means for activating the telephone set housed in the multi-terminal control device if the type identification signal is not received within a certain period of time; and a terminal corresponding to the type identification signal that has been activated. or means for detecting a response from the telephone and performing a billing response based on the detection of the response, wherein the subscriber line is a pair of subscriber lines.