JPH027793A - Telephone exchange - Google Patents

Abstract

PURPOSE:To cope with the necessity of expansion of a telephone function or the like without applying any special work even if the necessity is caused by wiring plural sets of multi-core cables having at least a pair of spare wires for preceding wire from a main body together with an extension and a signal wire. CONSTITUTION:An extension 6 and a signal wire 5 are led from a telephone exchange 1 whose main body is formed as the size of wall embedded wiring fixture module and spare wires 15 of a couple of wires are led out. Three pairs of the extension 6, the signal wire 5 and the spare wire 15 are wired by utilizing 6-core cable of multi-core cables are led from the telephone exchange 1. Thus, the spare pair wires are used if a control signal is sent, or the necessity of power supply is caused, or the necessity of expansion of a telephone set is caused through the expansion of the function at the terminal side.

Description

[Detailed description of the invention] [Industrial application field 1 The present invention relates to telephone exchanges.

[Prior art J] Figure 6 shows the overall configuration of a telephone exchange system using this type of conventional telephone exchange. 2 #il L + , L2 constituting the external #it2 from the exchange is connected, and the intercom slave unit 3 is connected via the call R4 consisting of a pair of wires, and the signal [5 and , and each telephone outlet 7 is connected through an internal line consisting of an extension line 6 consisting of a pair of lines.

Each telephone outlet 7 is configured such that an inner terminal #i6 is connected to a monophonic jack outlet 8, and a general telephone bill 9 is connected to the monophonic jack 8.

In addition, as shown in FIG. 7, the signal #X5 is applied to the signal #15 depending on the line status and the speaker SP that reproduces the ringing signal superimposed on the telephone exchange 1 when calling an extension or calling the doorbell. Voltage discrimination circuit 10 that discriminates voltage signals
The voltage discrimination circuit 10 turns on or off the light emitting element L at L b, which indicates that an internal call is in progress or an outside call is in progress, according to the discriminated voltage.

By the way, the telephone exchange 1 has a main body 11 as shown in figure #48.
It is formed in the modular size of a wall-embedded Al112B fixture, and can be attached to an embedded box embedded in a wall using a mounting frame 12 provided integrally with the main body 11.

In addition, the telephone outlet 7 also has a main body 13 formed with the same dimensions as a wall-embedded wiring device, as shown in FIG.
It is designed to be attached to an embedded box that is hammered into a wall by using a mounting frame 14 that is provided integrally with 3. # of connecting telephone exchange 1 and telephone outlet 7!
Line 6 and vM line 5 are pre-wired to solve aesthetic problems.

[Problem to be solved by the invention] However, in the conventional example, only two pairs of wires, the extension line 6 and the signal line 5, are wired in advance, so when it is desired to expand the telephone function or to supply power to the terminal side. Even if it becomes necessary to do so, there is no room for wiring, and in that case, the wiring itself has to be re-done, which makes it meaningless as a preliminary wiring, and there is a problem with aesthetics as the wiring has to be exposed. .

The invention claimed in claim 1 has been made in view of the above-mentioned problem, and even if it becomes necessary to expand telephone functions, etc., it can be quickly responded to without any special construction by using a spare line. The object of the invention is to provide a telephone exchange, and the invention as claimed in claim 2 is also intended to provide a telephone exchange that can be used with a pair of spare lines even when the functions of the terminal side are expanded and transmission of control signals and power supply are required. The purpose is to provide a telephone exchange that can

[Means for solving the problem] a Seishi π (In the invention of 1, when a call is received from an outside line, a communication path is formed between the telephone connected to the extension and the outside line, and the extension is called from the telephone connected to the extension. This device forms an extension communication path and sends out audio signals and voltage signals through the signal line when calling an extension, calling all telephones connected to an extension, or calling an extension. In a telephone exchange formed with wiring equipment module dimensions, a plurality of sets of multicore cables each having at least one pair of spare wires for advance wiring in addition to the extension lines and signal lines are wired from the main body.

The invention of claim 2 uses the pair of spare lines as signal lines for sending out multiplex transmission signals, and also as power supply lines for a signal processing circuit of a terminal that processes multiplex transmission signals sent through the signal lines. .

[Effect 1] However, in the invention of claim 1, the functions on the terminal side have been expanded, and it has become necessary to send control signals or supply power, or it has become necessary to add telephones. In some cases, a preliminary line of argument can be used.

In the second aspect of the invention, by sending control signals and power to the terminal side through a pair of spare lines, expanded functions can be operated through the signal processing circuit on the terminal side.

[XfI Example] The present invention will be described below with reference to Examples. FIG. 1 shows the overall configuration of a telephone exchange system using the present invention, in which a telephone exchange 1 derives signals M6 and signal #15 as in the conventional example, and also derives a backup line 15 consisting of a pair of lines. It has been done. These three pairs of wires, the extension line 6, the signal line 5, and the standby line 15, are wired using six-core multicore cables, and from the telephone exchange 1, multiple sets of multicore cables are connected in a star shape. It has been derived. Each spare A! In the embodiment, 15 is connected to the outside line 2 in the telephone exchange 1, and a monophonic cable 16 is connected on the terminal side, and the telephone Ppi 9 is connected to the outside line 2 regardless of the telephone exchange 11 in the event of a power outage or a failure of the telephone exchange 1. It is now possible to do so.

The configuration other than these fIa lines 15 is the same as that of the conventional example, and telephone outlets 7 are connected to the terminal sides of the Ft lines 5, respectively.

FIG. 2 shows the internal configuration of the telephone exchange 1 used in this embodiment.
, outer a2, inner #16... a coupling transformer 18 that extracts and transmits and receives the audio signal on top, and a hold music generating section 19,
A button/dial signal receiving unit 20 corresponding to each extension line 6, external line 2, and a DC closing unit 21 that performs DC closing to send a connection signal to the outside line 2. , outside R
While receiving a call, call outside number 12, extension 6..., monophone number 7.
Directly connected through Yatsuk8 FL phone P! 19...
A communication current detection circuit 22 for detecting the communication current flowing when the line is closed, a security signal input terminal 23 for connecting an external crime prevention or disaster prevention sensor, and a security signal input terminal 23 from which the security signal input terminal 23 is connected. A security signal detection unit 24 that converts input Lee frequency signals into digital signals depending on the presence or absence of a security signal, a cross point switch 25 that is an analog switch that sets a call bus, and an outside line dial tone detection unit 26. , a connection terminal 27 for connecting an emergency button, a push button caller 28 and a caller relay Ryd for making an outside call, and connection terminals T-29, 292 for connecting the door phone slave unit 3,
A calling signal detection unit 30', 30. which detects a calling signal from the door intercom slave device 3. and a door phone call circuit 31 that connects the door phone slave unit 3 and the cross point switch 25.
, a sound source generator 32 that generates a notification audio signal as a signal indicating the line status to be sent out via the signal line 5... or via the inner R6... Display 1/ applied to signal line 5 as a voltage signal
A current supply source for supplying communication current to the F drive section 33, the hook/dial pulse detection section 34 provided corresponding to each extension 6..., and each R6...
... and the connection between internal [6... and external line 2 and extension 6...]
and an outside line switching relay Ry for switching the connection with the cross point switch 25, a switch element S82 for connecting the door intercom slave unit 3 and the door intercom communication circuit 31, a push button earer 28, and a coupling transformer. a switch element S that connects with 14;
Coupling transformer 18 and button/dial signal receiving section 20. The switch element S4 connects with the telephone outlet 7, and the notification audio signal is sent to the signal #I5...
Or amplifier A for sending via extension 6...
. . , and a control circuit 35 that constitutes a core that controls sending out control information signals of these circuits and elements, and further performs signal judgment processing. In the figure, G, . . . are dates. In addition, it is equipped with a power supply unit that supplies power to each part, and also has an external M2,
Connection terminals are provided for connecting the signal lines 5 . . . , inner #16 . . . and spare #115, respectively.

1 in this telephone exchange 1! When the power is turned on and the system starts, the control circuit 35 consisting of a one-chip microcomputer performs initial settings, then enters a standby state, determines off-hook, determines whether there is an incoming external call, and processes the external call. It determines the presence or absence of a doorphone call and processes the doorphone call, determines the presence or absence of an extension call, processes the extension call, processes an outside line call, and so on.

Next, the operation of the entire system shown in FIG. 1 will be briefly explained based on the circuit shown in FIG.

For example, a telephone plug 9 connected to a telephone outlet 7
When the handset is raised, the corresponding switching contact r1 of the external line switching relay Ryl at this time changes to the a contact side,
In other words, since it is connected to the cross point switch 25 side, the corresponding hook/dial pulse detector 34 detects off-hook and sends the detection signal to the control circuit 35.
Output to.

The control circuit 35 is the X510 of the cross point switch 25.
is turned on, and a pseudo call signal consisting of 400)-(z is sent to the telephone outlet 7 through the cross point switch 25 and the inner #i6. At the same time, the control circuit 35 turns on the display I/F display door. 41 to output a voltage signal that lights up the light emitting element La for indicating that an outside line is busy in each telephone outlet 7 .

At this time, the light emitting element Lb1. which indicates that the extension line is busy. is controlled to be off.

This transmission continues until the manual input of the dial signal is reached, and when the first dial signal ■ is detected by the seven dial pulse detection section 34 (or the punch dial signal receiving section 202 in the case of the push dial type), the control circuit 35 Stops the output of the pseudo transmission signal and stores the gouillage data in the built-in buffer memory. Then activate the built-in 3 second timer. If the dial signal 2]1 is detected while this timer is operating, it is determined that an outside call has been made. If the second dial signal (■) is not input within these 3 seconds, it is determined that the call is an extension call, and the extension call processing is performed.

On the other hand, in the case of an outside call, the data of the manually input dial signal is sequentially stored in the buffer memory, and a signal for operating the DC connection section 21 is output. The outside line transmission sound is detected 1'1l by the four-wire closure by this DC closing section 21.
When s26 detects an outside line dial tone and the detection signal is input to the control circuit 35, the control circuit 35 sequentially reads the dial data stored in the buffer memory starting from the first dial data and operates the switch element S3 and the push button dialer 28. Alternatively, the dial relay Ryd is operated to sequentially send dial signals to the outside line 2. At the same time, the data of the dial signal input from the telephone set 9 is stored in the buffer memory.

In this way, the dial data from the telephone bill 9 is stored in the buffer memory at the same time as the dial signal is sent to the outside #I2. When the dial data stored in the buffer memory runs out and a certain period of time has elapsed, the next call will be made to an outside line. Incidentally, when sending the dial signal to outside #I2, the line connection is interrupted. Whether the push-button earer 28 or the dial relay Ryd is operated is determined by the type of line.

In the figure, ``d'' is a relay contact of dial relay Ryd, which is used to disconnect the line and make a dial call, and is normally closed.

For outside calls, a coupling transformer 18, a mute switch element S, a cross point switch 25, a switching contact R, .
. . , which is performed via [6]

Next, the operation when calling an extension will be explained.

First, a dial signal is input from the telephone 9 connected to the telephone outlet 7, and after a pseudo call signal is output, if the next dial signal is not input manually within 3 seconds, it is determined that the extension number is the input dial data. and control circuit 3
5 turns off X5lQ of the cross point switch 25, which has been turned on since OFF 7, and disconnects the outside line 2, and also sets the call bus to #16, which is the one that made the call.
, , is turned on. Also, the light-emitting elements La of each telephone outlet 7, which had been turned on from off-hook, were turned off,
At the same time, the display 1/F display drive section 33 outputs a voltage signal that lights up the light emitting element Lb indicating that the extension line is busy. Furthermore, the control circuit 35 controls the sound source generator 32 to output an audio signal for calling an extension 1, and this audio signal is
i6 .

Note that these transmissions are performed alternately. Now, the telephone outlet 7 to which the voice signal has been sent emits a ringing tone from the speaker SP. When the handset of the telephone 9 connected to the telephone outlet 7 is picked up due to this ringing, the dial pulse detection unit 34 detects this off dial pulse and sends a detection signal to the control circuit 35. The control circuit 35 stops the generation of the audio signal based on this OFF 7//, and also turns the cross point switch 25 off.
Turn on X527, and connect 1IQ6 of 7 telephone outlets.
and M6 of the telephone outlet 7 are connected to establish a talking state.

After this, a call can be made between the telephone 9 connected to the telephone outlet 7 and the telephone bill 9 connected to the telephone outlet 7. At this time, the line switching relay Ry...
Ry2 is maintained with switching contact r++r2 connected to the a contact side.

Incidentally, at the time of simultaneous ringing, a ringing tone is emitted from the speaker SP of each telephone outlet 7.

By the way, when an incoming call signal is input from the outside line 2, the incoming call detection section 17 detects this incoming call signal and outputs an incoming call detection signal to the control circuit 35. When the control circuit 35 receives this incoming call detection signal, it stops the excitation of each outside line switching relay Ry+ and switches each switching contact r1 to the b contact side. Therefore, the telephone R connected to each telephone outlet 7...
9... is connected to outer #X2 through inner M6...,
The built-in bell in each telephone 9... will ring. When the handset of the telephone 9 connected to a certain telephone outlet 7 is turned off due to this ringing, a communication current flows through the line. This call current is detected by the call current detection circuit 22, and upon this detection, the control circuit 35 detects that one of the telephones 9... is turned off, turns on the DC closing section 21, and simultaneously switches on the outside line switching relay. Ryl
. . is excited, and after each switching, αr, . . . are switched to the a contact side. This makes it possible for the hook/dial pulse detector 34 to detect the OFF state, and the control circuit 3
5 detects that the handset of the telephone R9 connected to the telephone outlet 7 has been picked up, and at the same time as this detection, the cross point switch 25
Turn on 1o, connect outside line 2 and the corresponding telephone outlet 7 +l
i6, and external calls can be made at 4-cho-cho-m.

Now, if you want to make an extension call or make a doorphone call during the above-mentioned outside line call, you can put the call on hold.

First, when the handset of the telephone 1fi9 is not on-hook in the DC connected state during an outside line call and a dial signal, for example 'O', corresponding to a hold is sent from the telephone 9, the control circuit 35 receives this dial data. It is read and determined to be a hold operation, and a hold process is performed to release the call state between the internal #I6 and outside line 2, that is, turn off X5ho of the cross point switch 25, and press X s + + t.
Turn on X sl 7. Then, one hold-tone generator is operated to output the hold-tone 70-day signal through the coupling transformer 18 to the output #12, the amplifier A4, and the cross point switch 2.
5. The signal is superimposed and sent to each signal line 5 through the amplifier A1. In addition, under the control of the control circuit 35, the display 1/F
A voltage signal for simultaneously displaying an internal line and an outside line is sent from the drive unit 33 to each telephone outlet 7 via the signal line 5, and the respective light emitting elements La and Lb are turned on. In other words, the on-hold tone melody signal notifies the other party's phone that the phone is on hold through the outside M2, and at the same time, the on-hold tone for 70 days is played back and output from the speaker SP of the telephone outlet 7 connected to each phone 9. At the same time, the light-emitting elements La and Lb
The light will flash to indicate that the item is on hold.

After the hold, even if the telephone set 9 is put on the hook and the call ends, the DC closing section 21 is kept on and the call operation is started.

Next, if you want to make an outside call again, you can release the call from hold.

To release this hold, all that is required is to send a dial signal of "0" from any off-hook telephone 9, and the control circuit 35 detecting the dial data of "0"
The operation of the terminal is stopped, and each part is controlled to return to the original outside line communication state. When the call after the hold is released and the telephone 8!9 is put on the hook again, the DC connection by the DC connection unit 21 is released under the control of the control circuit 35.

Now, after entering the hold state described in item 1, if the input dial data is other than "'7"' which specifies a doorbell call, the extension number will be connected to the telephone outlet 7 as an extension call using the extension process described above. Go.

Also, when the dial data of 7'' is input, the control circuit 35
is determined to be a doorbell call and the cross point switch 25 is activated.
, and at the same time turn on XS+z of the cross point switch 25 corresponding to the doorphone call line. Then, for example, the switch element Sl is turned on to connect the door intercom element "a3" to the door intercom communication circuit 31, thereby enabling intercom communication.

In addition, if there is a call from the door intercom slave unit 3 while on standby, the control circuit 35 and the cross point switch 25? Under the function of , the audio signal of the doorbell call chime sound generated from the sound source generator 32 is sent to the telephone outlet 9 . . . through the signal llA 3 .

In the embodiment, the standby line 15 is directly connected to the outside line 2 so that the telephone fi 9 can be connected to the outside line 2 regardless of the telephone exchange 1 by going up to the modular telephone line 11 on the terminal side. As shown in the figure, when a multifunctional telephone outlet 7a is used as a telephone outlet, it can be used as a signal line for multiplex transmission of control signals and a power supply line for supplying power. Also good.

FIG. 4 shows a block diagram of the multiplex transmission system of this embodiment, and the telephone exchange 1 side is provided with a signal transmission section 36 for sending out time division multiplex transmission signals to the standby@15 as shown in FIG. There is.

The time division multiplexed signal transmitted from the telephone exchange 1 is formed by sending voltage signals of +V and -V based on one line of the protection line 15 according to the data bit, and +■ is set to a logic value of "1".
'', and -V is set to the logical value ``0''.

In the multifunctional telephone outlet (7a), a time-division multiplex transmission signal is rectified by a diode bridge 37 and smoothed by a capacitor 38 to obtain a direct current, and this direct current is sent to a received signal processing section 39, a transmitted signal processing section 40, and a control section. The received signal processing ff1S39, which is now used as a power source for the telephone exchange 1, detects the multiplexed signal transmitted from the telephone exchange 1 with resistors 42 and 43, takes it in through the amplifier 44, and restores the transmitted data.This restored data is The information is read by the control unit 41, and the control unit 41 controls the display 45 and the like based on the reading result.

In addition, the transmission signal processing l\1s39 prepares data corresponding to the hold operation signal of the hold switch SW1 taken into the control unit 41 and the operation signal of the doorbell response switch SW2.
By short-circuiting 15, the data is transmitted to the telephone exchange 1 in current mode, and instructions for these operations can be issued to the telephone exchange 1 without using the telephone 9 to send the dial number for a hold or doorphone call. be. In other words, this transmission signal is received and interpreted by the signal transmission section 36 of the telephone exchange 1, and the interpretation result is given to the control circuit 35, which allows the telephone set 9 connected to the normal telephone outlet 7 to perform a hold operation by dialing a dial number, or answer a doorbell. The same control operation is performed.

[Effect of the invention 1 In the invention described in claim 1, when there is an incoming call from an outside line, a communication path is formed between the telephone connected to the extension and the outside line, and when there is a call to the extension from the telephone connected to the extension, the extension communication path is established. This is a device that sends out audio signals and voltage signals through signal lines when an extension is called, when all telephones connected to an extension are called, or when an extension is called. In the telephone exchange formed by the above-mentioned system, multiple sets of multi-core cables having at least one pair of spare wires for advance wiring are wired from the main body in addition to the above-mentioned extension lines and signal lines, so the functions of the terminal side are expanded and control signals can be transmitted. When it becomes necessary to transmit or supply power, or when it becomes necessary to add more telephones, it is possible to easily cope with the situation by using a spare pair of wires.

Further, in the invention as claimed in claim 2, the pair of spare lines are used as signal lines for multiplex transmission and are also used as power supply lines for the signal processing circuit of the terminal that processes the multiplex transmission signals sent through the signal lines. The effect of this is that even if it becomes necessary to send control signals or supply power due to expanded functions, the spare pair of wires can be used to transmit control I compensation signals and supply power. play.

[Brief explanation of the drawing]

fjS1 is an overall configuration diagram of a telephone exchange system using one embodiment of the present invention, FIG. 2 is a circuit diagram of the same telephone exchange, and FIG. 3 is a telephone exchange system using another embodiment of the present invention. 4 is a circuit diagram of the main parts of the same as above, FIG. 5 is a waveform diagram of a multiplexed transmission signal as above, FIG. 6 is an overall diagram of a telephone exchange system using a conventional example, and FIG. 8 is a front view of the main body of the telephone exchange, and FIG. 9 is a front view of the telephone outlet. 1 is a telephone exchange, 2 is an outside line, 3 is a doorbell slave, 4 is a telephone line, 5 is a signal line, 6 is an extension line, 7 is a telephone outlet, 8
is a monocular jack, 9 is a telephone, 15 is a backup line, 3
6 is a signal transmission section, 39 is a received signal processing section, 40 is a transmission signal processing section, and 41 is a control section. Figure 7 Figure 8 Figure 9

Claims (2)

[Claims] (1) When there is an incoming call from an outside line, a communication path is formed between the telephone connected to the extension and the outside line, and when an extension call is received from the telephone connected to the extension, an extension communication path is formed, and when the extension is called, This equipment sends voice signals and voltage signals through signal lines when all telephones connected to an extension are called all at once or when an extension is called.In a telephone exchange whose main body is made of wall-embedded wiring module dimensions, the above-mentioned extension A telephone exchange characterized in that a plurality of sets of multicore cables each having at least one pair of spare wires for advance wiring along with a signal line are wired from the main body. (2) A claim characterized in that the pair of spare lines are used as signal lines for sending out multiplex transmission signals, and also serve as power supply lines for a signal processing circuit of a terminal that processes multiplex transmission signals sent through the signal lines. The telephone exchange set forth in item 1.