JPH0245389B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is connected to a general telephone line, and automatically calls another line to a caller who has received a call when the user is not present, thereby keeping the caller secret. The present invention relates to a telephone transfer device that calls another telephone, notifies information regarding the transfer, and enables a call to be made between the other telephone.

[Prior art and its problems]

Traditionally, countermeasures against calls that come in when you are not available include installing an answering machine and recording a tape to request the call to be returned to another phone, or recording the message on a tape. The problem was resolved later by playing and listening to this.

However, in general, people tend to get confused when talking to a machine because they are not used to it, and calling a different number again is not desirable because it forces them to pay twice for the call.

Furthermore, depending on the industry, there is a risk that such troubles may cause the customer to change the other party with whom they do business, and in any case, it is far more inconvenient than if a person actually answers the phone directly. There isn't.

For this reason, in response to calls made when you are absent,
There is a telephone transfer device that notifies the caller of a message to the effect that the call will now be transferred to another telephone that is occupied, and then calls the other telephone so that the call can be made to the transfer destination. However, even with this device,
It became known that the location where the telephone transfer device was installed was not available, and the same problem as described above occurred.

[Means for solving problems]

The present invention was made for the purpose of solving the problem, and as a means for solving this problem, the present embodiment has the following configuration.

That is, a signal receiving means for detecting an incoming signal connected to an incoming telephone line, a central office line activating means for creating a DC loop for the outgoing telephone line in response to the detection output of the signal receiving means, and a central office line activating means for creating a DC loop for the outgoing telephone line. telephone number signal sending means for transmitting a called party telephone number signal activated by the means and stored in advance to the originating telephone line; called party response detection means for detecting when the called party answers; Notification sound control means for transmitting a pre-stored transfer notification sound to the calling line in response to the output of the called party response detection means, and the notification sound control means after sending the notification sound for a predetermined period of time. transmission time designation means for stopping the notification sound transmission to the originating telephone line by the notification sound control means and specifying the notification sound transmission time by the notification sound control means; An incoming line response means that creates a DC loop for the incoming telephone line; and after the incoming line response means generates the DC loop, the telephone line is closed and the incoming telephone line and the outgoing telephone line are connected to enable communication between the two lines. and a response means for.

[Effect]

In the above configuration, when a call comes in when you are not present, a call is automatically placed on another line, the caller is secretly called on another phone, information regarding the transfer is notified, and the caller receives the call as if the call was made directly at the transfer destination. You can respond as if you answered the caller.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

First, referring to FIG. 1, a connection system diagram of telephone lines when the apparatus of this embodiment is installed will be explained.

In Figure 1, A is the calling party's telephone, B, C
are a telephone and a pushphone on the receiving side where the transfer device S of this embodiment is installed, D is a telephone of the transfer destination, and E is a telephone of another customer.

X ₁ and X ₂ each indicate a central office.

It should be noted that the place where the normal telephone B, pushphone C, and transfer device S are installed is assumed to be a business office, and the transfer destination is assumed to be the head office.

Now, a customer is using phone A to connect phone B.
If you call and the office staff is not available,
When the bell of telephone B rings, the telephone transfer device S of this embodiment is activated, calls another line from the pushphone C, and sends an MF signal corresponding to the pre-memorized telephone number of the forwarding destination telephone D. Send automatically. When telephone D responds and the pushphone C and telephone D are connected, the response circuit of this embodiment immediately operates and outputs information to telephone D that the call is a forwarded call from the office, and then to telephone B. In response, the bell of telephone B stops ringing, and at the same time, telephone A can talk to telephone D as if telephones A and B were talking through the mediation of the device of this embodiment.

Then, the device of this embodiment automatically recovers when either telephone A or B picks up the receiver.

Since the device of this embodiment operates in this way, even if the office staff is absent, the call can be made at the head office without any hindrance as if the person was answering from the office. The business office can also be an unmanned business office.

Therefore, it is possible to significantly reduce personnel costs.
Furthermore, since it is sufficient to simply install the apparatus of this embodiment at the location, not only personnel costs but also office costs can be reduced.

FIG. 2 is a block diagram showing the schematic configuration of the apparatus of this embodiment. To explain one embodiment of the present invention based on FIG. 2, when a normal incoming call signal is received on the incoming telephone lines indicated by terminals L ₁ and L ₂ , terminal L ₂
is "+" terminal _L1 is "-" DC voltage is generated,
Also, as a calling signal, a 16Hz AC signal is sent for 1 second and then superimposed after a 2 second break.The signal receiving circuit 1 extracts only this 16Hz AC signal through a capacitor, rectifies it to obtain a DC output, and then relays the signal. Operate the circuit and start the station line start control circuit 2
send to This control circuit 2 starts the office line starting circuit 3, which creates a DC loop for the outgoing telephone lines indicated by terminals L' ₁ and L' ₂ , and at the same time, the MF
Activate the signal control circuit 4. The MF signal control circuit 4 controls the MF signal oscillation circuit 5 to send out a pre-stored called party telephone number signal.

During normal times and when making a call, the telephone exchange at the central office supplies "+" DC voltage to terminal L' ₁ and "-" DC voltage to terminal L' ₂ of the outgoing telephone line. Then, this voltage is reversed, and terminal L' ₁ becomes a "-" voltage and terminal L' ₂ becomes a "+" voltage. For this reason,
The relay of the called party response detection circuit 6 operates, and the response circuit 7 creates a DC loop for the incoming telephone line.
By closing the communication path 8 with the relay of this circuit 7, the incoming telephone line and the outgoing telephone line are connected in an alternating current manner, allowing communication between the two lines. That is, the first
A call is started between telephone A and telephone D in the figure. At this time, the communication path 8 restores the office line activation control circuit 2 and maintains the office line activation circuit 3.

Note that when the notification sound control circuit 9 calls the called party, it sends out a notification sound previously stored in a magnetic recording device or the like to notify that the callee has been transferred.

This notification sound is not just a dial tone, etc.
Depending on the case, the call may be forwarded to "Tokyo" or "Osaka," and the name of the forwarded business office may be announced by repeating a voice that also indicates the forwarding source for a short time.

The method for restoring the device after a call ends depends on the switching system of the telephone office to which the telephone line of interest is connected and whether the transfer destination is local or out-of-town.

The C400 type of switchboards that will be installed from now on will be the mainstream, so when the first caller hangs up, the line lockout circuit of the switchboard will operate and the incoming telephone line will be routed through terminals _L1 and _L2 . The flowing current decreases, which restores the relay of the response circuit 7, disconnects the holding of the central office line activation circuit 3, opens the direct current loop of the originating telephone line, and the transfer device returns to the standby state again.

If you hang up the phone at the destination telephone first, the voltage of the calling telephone line, which had been inverted when the destination was within the city, returns to its original state, which causes the relay of the called party response detection circuit 6 to switch on. Restoration, response circuit 7,
The communication path 8 and the office line activation circuit 3 are restored to open the DC loop between the incoming telephone line and the outgoing telephone line.

If the transfer destination is outside the city, the voltage on the outgoing telephone line remains reversed, but the telephone exchange at the central office forcibly disconnects the outgoing telephone line within 10 to 20 seconds, locking out the outgoing telephone line and returning the voltage to the original voltage. Since it will return, the restoration will be the same as in the city.

Since FIG. 2 is a functional block diagram, the station line activation control circuit 2 and the station line activation circuit 3, which are essentially integrated, are shown separately for ease of understanding.

Next, a more specific configuration of the essential parts of the block diagram shown in FIG. 2 will be explained with reference to FIGS. 3 to 7.

As shown in FIG. 3, the signal receiving circuit 1 has a terminal
A series circuit of resistors R ₁ and R ₂ is connected to the incoming telephone line denoted L ₁ , L _{2 through a capacitor C 1 ,} and a transformer T ₂ and a diode D ₁ ~ are connected between the terminals of this resistor R ₂ .
This is a rectifier circuit consisting of _D4 connected in sequence.
Therefore, as described above, this circuit detects an incoming signal and rectifies it to obtain a DC output.

The station line activation control circuit 2 is generally constituted by a transistor switching circuit and a relay energized by the operation of this circuit.

The station line starting circuit 3 has a contact ls which is switched by this relay, and terminals L' ₁ and L' ₂ are connected by the transformer T _1.
Form a DC loop to the outgoing telephone line indicated by .

At the same time, a power supply voltage of "+15" V is supplied to the MF signal control circuit 4 shown in FIG. 4 through another contact l's to start this circuit 4. MF signal control circuit 4 is 2
The MF signal oscillator 5 is equipped with relays LD ₁ and LD ₂ and performs slow-slow operation as shown in FIG.
00" speed dial signal. Figure 6 is
This shows the configuration of the MF signal oscillation circuit 5.

When the central office exchange receives this signal, it connects to the telephone line corresponding to the pre-stored number of the forwarding destination and calls it. When the called party answers, the current in the outgoing telephone line is reversed, so the relay H of the called party response detection circuit 6 shown in FIG. The relay MS of the notification sound control circuit 9 shown in FIG. 7 is operated to close the contact ms. As a result, as is clear from FIG. 3, the above-mentioned notification sound is sent to the telephone D via the transformer _T1 , and is heard by the called party.

After the contact h closes, the relay MT also operates after a certain period of time (for example, 1.5 seconds) determined by the CR circuit, and the closing of the contact mt creates a DC loop in the incoming telephone line. This current flowing through the incoming telephone line operates the relay L of the response circuit 7 in FIG.
Contact ^L4 opens, the relay MS is restored, and the notification sound stops being sent. This control causes the notification tone to be sent to the called party for a predetermined period of time determined by the time constant of the circuit.

Subsequently, the contacts l ¹ and l ⁸ are closed to form a communication path 8 via the capacitor. Relay LS is restored in connection with contact ^l4 , but the rape to the originating telephone line is maintained due to the closure of contact ^l2 .

On the other hand, the relay L of the response circuit 7 and the relay H of the called party response circuit are connected via the contact mt of the relay MT.
Since the relays are connected to each other, they will not be restored during a call, but if one of the relays is restored, the other relays will also be restored, and this transfer device will be restored and put into a standby state.

As explained above, even if no one is present at the installation location, this embodiment of the device automatically transfers the call to another preset telephone in a secret manner, without causing any discomfort to the caller. It is an epoch-making device that eliminates the inconveniences of conventional answering machines in terms of speeding up office communications and reducing costs.

In addition, not only is it convenient for all office staff to be able to receive communications at the head office even when they are away from home, but in some cases, it is possible to abolish the office itself and simply install this transfer device, making it possible to have an office. It can play a similar role.

Therefore, it contributes to a significant reduction in personnel costs and expenses, and can be said to be an extremely suitable device in the era of labor saving.

Note that the present invention is not limited to the embodiments or examples described above, and various configurations and usage methods can be adopted without changing the gist.

This is organized and illustrated below.

a) For example, in the embodiment shown in Fig. 2, the station line activation control circuit, MF signal control circuit, notification sound control circuit, etc. are shown as being configured separately from the circuits to be controlled, but these are the circuits to be controlled. It does not depart from the scope of the present invention even if the device is integrated into the device.

b) Normally, it is preferable that the notification sound for the forwarding destination be a voice such as "Tokyo" or "Osaka" that indicates the location where the forwarding device is installed, but it is also preferable to use a special tone that indicates the forwarding destination or indicates the forwarding destination. But that's fine.

Note that although the notification sound transmission time is 1.5 seconds in the description of the embodiment, this may be appropriately selected as necessary.

c) You can set a timer to automatically change the forwarding destination to another destination if the destination is not found after a certain amount of time has elapsed, or change the forwarding destination according to the scheduled time. It is possible. In this case, this is normally done by changing the telephone number signal of the called party sent from the M signal generation circuit via the MF signal control circuit.

d) This transfer device can be installed in parallel with an answering machine and can be used by switching between the two depending on the situation at the time. This switching can also be performed using a timer.

When they are installed in parallel, it is advantageous to share some of the constituent elements because the entire device can be simplified.

e) Furthermore, it is also possible to change the transfer destination by calling the transfer device from a remote location and sending a remote control signal.

In this case, a receiving circuit 10 for remote control is connected to the incoming telephone line as shown by the broken line in FIG. This is done by changing the telephone number signal.

f) It is also possible to carry out this change of the called party's telephone number signal by means of a built-in timer.

g) Instead of changing the called party's telephone number signal sent from this transfer device, it is conceivable to directly change the forwarding destination (called party's telephone number) stored in the telephone office.

In this case, a remote control signal is received, the calling line is temporarily released, the connection operation of the exchange at the telephone office is reset to return to dial tone, and the called party's telephone number at the telephone office is changed.

As explained above, according to this embodiment, information regarding the forwarding source is secretly notified to the caller, so that the caller understands that the forwarding destination is a forwarded call and responds as if the caller were answering at the forwarding source. It is possible to provide a telephone transfer method and device that can appropriately respond to customers.

Furthermore, according to this embodiment, the response to the caller is made after the forwarding destination responds, so compared to a case where the caller is responded to first and a notification sound etc. is sent after that,
You can shorten the silent time between answering and actually making a call.

〔Effect of the invention〕

As described above, according to the present invention, incoming calls when you are absent are automatically switched to another telephone that can be answered directly by a human, and the caller is secretly recognized that the call has been forwarded. It is possible,
As a result, it is possible to provide a telephone transfer device that can provide appropriate response, speed up response, and reduce costs.

Further, according to the present invention, since the notification sound is sent only for a predetermined period of time, unnecessary waiting time for the caller can be prevented, and the call transfer process can be performed reliably and stably.

[Brief explanation of the drawing]

Fig. 1 is a connection system diagram of a telephone line in which a device according to the present invention is installed, Fig. 2 is a block diagram showing an embodiment of the invention, and Fig. 3 shows the specific configuration of the main parts of the embodiment. Fig. 4 is a wiring diagram of the MF signal control circuit, Fig. 5 is a diagram explaining the operation of this circuit, Fig. 6 is a wiring diagram of the MF signal oscillation circuit, and Fig. 7 is a wiring diagram of the notification sound control circuit. It is. In the figure, 1...Signal receiving circuit, 2...Station line activation control circuit, 3...Station line activation circuit, 4...MF signal control circuit, 5...MF signal oscillation circuit, 6...Called party response Detection circuit, 7... Response circuit, 8... Communication path,
9...Notification sound control circuit, 10...Remote control receiving circuit, _L1 , _L2 ...Terminals of incoming telephone line, L' ₁ , L' ₂ ...Terminals of outgoing telephone line.

Claims (1)

[Claims] 1. A signal receiving means connected to an incoming telephone line and detecting an incoming signal, a central office line activating means for creating a DC loop for the outgoing telephone line in response to the detection output of the signal receiving means, and a central office line activating means that telephone number signal sending means for transmitting a called party's telephone number signal activated and stored in advance to the originating telephone line; called party response detecting means for detecting when the called party answers; notification sound control means for transmitting a pre-stored transfer notification sound to the calling line in response to the output of the caller response detection means; a transmission time designating means for stopping the notification sound transmission to the outgoing telephone line and specifying the notification sound transmission time by the notification sound control means; an incoming line response means that creates a DC loop with respect to the line; and after the incoming line response means generates the DC loop, the call path is closed and the incoming telephone line and the outgoing telephone line are connected to enable communication between the two lines. A telephone transfer device comprising: a response means.