JPS61203762A - Switching communication system - Google Patents

Abstract

PURPOSE:To avoid the 1st telephone talking from being limited by a digital link by disconnecting once a telephone communication performed via a non- transmission channel after a specific pushbutton dial signal is converted. CONSTITUTION:When a caller subscriber's controller 13 hooks off, the control circuit 15 executes a call procedure and when a dial input is given, the network is connected to the incoming side. When an incoming side subscriber's controller 13' hooks off, the state is transited to a usual non-transmission telephone talking state. In depressing a changeover key 11 of the controller 13, the circuit 15 drives a PB oscillator 7 to send a button A signal of a PB signal, for example. On the other hand, a signal received by a PB signal receiver 11' in the controller 13' is analyzed by the circuit 15'. The circuit 15' discriminates that the received PB signal is A, enters the switching communication and the oscillator 7' is controlled and a button B signal of the PB signal, for example, is sent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a telephone communication system that uses a home control device that includes not only a telephone circuit but also non-telephone equipment to perform communication with a counterparty. The present invention relates to a switching communication method when switching from communication to communication using non-telephone equipment (for example, non-telephone communication such as facsimile communication), or vice versa.

[Conventional technology]

FIG. 8 is a block diagram showing the circuit configuration of a home control device used in such a conventional switching communication system.

In other words, conventional in-home control equipment that is accommodated in a digital network and has basic telephone functions as well as non-telephone equipment control functions such as outgoing and incoming connections for the non-telephone equipment it accommodates and telephone/non-telephone switching communication. An example is shown in FIG.

In the figure, 1 is a conventional in-home control device, 2 is a non-telephone device, and 3 is an information signal generated by the in-home control device that develops a digital signal from a digital line into an information signal and a communication control signal from the network. A line interface unit converts the control signal into a digital signal to the network; 4 is a communication circuit that performs a telephone function; 5 is a codec, which converts the information signal from the line interface circuit 3 into an analog signal, or converts the information signal from the communication circuit 4 into an analog signal; 6 is a codec that converts the analog signal into an information signal, 6 is a dial switch for dial input,
7 is a PB (push button dial signal) oscillator, which sends a dial press confirmation sound, sends a PB signal sound to the network, end -
P for signal transmission at end (between terminals)
A PB oscillator that generates a B sound, 8 a non-telephone interface circuit for exchanging exchange signals with non-telephone equipment, and 9 a changeover switch for switching the information path to the communication circuit 4 or the non-telephone interface circuit 8. switch,
IO is a control circuit that analyzes and generates communication control signals with the rope and non-telephone equipment, and controls the changeover switch 9 when performing switching communication; 11 is a changeover key that performs switching; a switching key 1 for transmitting information to the control circuit 10;
2 is a digital 1 link request key, end −
This is a digital 11J link request key for specifying a telephone connection using a communication path (hereinafter referred to as digital 1 link) in which the information path (between terminals) is entirely composed of digital signals.

In the switching communication system using the home control device shown in FIG. 8, a digital 1 link request is made to the network using the digital 1 link request key 12 after going off-hook, with the intention of performing switching communication later.

This allows the information between end and end to be converted into digital 1
As a link path, the signal path for transmitting and receiving signals between the exchange and the terminal is further extended to end-to-end, and e
A control circuit 10 uses a changeover switch 9 to control an information path by transmitting and receiving signals between nd and end.

This was achieved by switching over the phone.

FIG. 9 shows a conventional switching sequence.

In the figure, an in-home control device (1) and a non-telephone device (2) accommodated therein are connected via a digital network to an in-home control device (1') and a non-telephone device (2) accommodated therein.
'), by first pressing the digital 1 link request key 12, a telephone call is made using the digital 1 link, and then by pressing the switch key 11, non-telephone communication using the digital 1 link is performed. It will be understood that the procedure of switching communication method to transition to .

In this way, in the conventional switching communication system, the first telephone call is a call made using 1 digital link, but communication that specifies 1 digital link is normally (hereinafter referred to as ordinary non-transparent telephone calls), communication charges are higher than telephone calls made using these lines (hereinafter referred to as ordinary non-transparent telephone calls), so a telephone call that specifies Digital 1 Link is the same telephone call. However, the call charges are higher than regular non-transparent phone calls.

Furthermore, as shown in Fig. 9, telephone calls that require switching are calls based on the digital 1 link, and it is necessary to distinguish them from ordinary non-transparent telephone calls, so it is necessary to use the digital 1 link before making the call. It is necessary to press the link request key 12, which makes the operation complicated. Conventional switching communication systems have these drawbacks.

In addition, in a normal non-transparent telephone call, the band frequency of the information path is limited to 4KHz of the analog band, and
It is not possible to extend the signal path between ends, and communication means using the information path can only pass human voice. Therefore, digital 1 link request key 1
If you forget to press 2 and connect using a normal non-transparent phone, or if you want to switch communication during a call, the information path band is limited to 4KHz and you cannot communicate with a digital non-telephone. There was also the drawback of not being able to receive switching services to telecommunications.

[Problem that the invention seeks to solve]

Therefore, the problem to be solved by the present invention is to enable the switching communication system so that the telephone call as the first communication does not have to be a call using digital 1 link, and to provide a switching service to non-telephone communication. It can be said that it is to be able to receive it.

Therefore, it is an object of the present invention to provide a switching communication system that makes the above possible.

[Means and operations for solving the problems] In order to achieve the above object, the present invention provides a means for communicating with the other party using an in-home control device that not only includes a telephone circuit but also accommodates non-telephone equipment. In a switching communication method for switching communication from telephone communication to communication using non-telephone equipment (hereinafter referred to as non-telephone communication) or vice versa, the home control device is provided with means for transmitting and receiving means for push-button dialing signals. When switching, after converting a specific push-button dial signal between the other party's home control device using the transmitting means and receiving means, the telephone communication that was previously carried out via a non-transparent communication path is changed. This feature is characterized in that the communication is switched once to be disconnected and non-telephone communication is started via the digital l-link communication path, or vice versa.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an example of the configuration of a home control device used when implementing the switching communication system according to the present invention.

In the figure, numerals 2 to 9 and 11 indicate the same parts as in FIG. 8, respectively. 13 is the basic telephone function,
A home control device that has a non-telephone control function and is necessary for carrying out the present invention; 14 is a PB signal receiver for receiving PB damage signals between ends; 15 is a control circuit; analyze and generate exchange signals with and non-telephone equipment, control the selector switch 9 for switching communication, control the 28 oscillator 7 for switching communication, analyze data received by the PB signal receiver 14, etc. This is the control circuit that does this.

FIG. 2 is an explanatory diagram showing a sequence when switching communication from telephone communication to non-telephone communication according to the present invention.

FIG. 3 is an explanatory diagram showing a sequence in the case of performing cut-back communication from non-telephone communication to telephone call.

Next, the operation of the circuit shown in FIG. 1 will be explained using FIGS. 2 and 3. In FIG. 1, the PB receiver 14 is configured to constantly monitor the reception signal from the codec 5.

First, the operation when switching from telephone communication to non-telephone communication will be explained with reference to FIG.

When the in-home control device 13 on the calling side goes off-hook, the control circuit 15 performs a calling procedure with the network as shown in FIG. After this, when the dial is entered, the network connects to the called party.

Here, the control circuit 15 stores the current dial in preparation for the next transmission. When the in-home control device 13' on the receiving side goes off-hook, a normal non-transparent telephone conversation state is established. Here, when the switching key 11 is pressed on the in-home control device 13 on the sending side, the control circuit 15 drives the 28 oscillator 7, and sends out, for example, the PB flaw signal button [A] signal (the PB flaw signal [A] is 697 Hz). It is a signal that combines two frequencies of 1633Hz, and is not a combination of frequencies assigned to a general dial switch, so it is not caused by incorrect operation of the dial, nor is it a signal that can be mistakenly recognized as such by voice etc.) .

The transmitted PB defect signal is converted into digital information by the codec 5, and transmitted to the receiving side home control device 13' through the changeover switch 93 and the line interface section 3. Furthermore, P
The highest frequency of the B flaw signal is 163311z, which is 4KHz.
Even in the case of non-transparent/transparent telephone calls in the analog band, end −
Can be transmitted between ends.

On the other hand, in the home control device 13' on the receiving side, the signal passes through the PB defect signal line interface section 3' and the changeover switch 9', is converted into an analog signal by the codec 5', and is received by the PB signal receiver 14'.

The signal received by the PB signal receiver 14' is sent to the control circuit 15.
' is parsed. The control circuit 15' determines that it is the received PB flaw signal [A], starts switching communication operation, controls the PB oscillator 7', and outputs, for example, a PB flaw signal as a confirmation signal.
Scratch signal button [B] Sends a signal (PB scratch signal [B]
is a signal that combines two frequencies of 770h and 1633 Hz, and there is no risk of erroneous generation, as in the case of signal [A]).

The transmitted PB damage signal is converted into digital information by the codec 5' and sent to the selector switch 9'9 line interface section 3.
' and is transmitted to the home control device 13 on the calling side.

The in-home control device 13 on the originating side transmits the PB multiplied signal B] to the line interface section 3. Selector switch 9° codec 5
The PB signal receiver 14 receives the signal through the PB signal receiver 14. Control circuit 15
analyzes that the PB multiplied signal B] received by the PB receiver 14 is a confirmation signal, and recognizes that the in-home control device 13' on the receiving side has received the PB multiplied signal A].

Furthermore, the control circuit 15 of the in-home control device 13 on the calling side,
In order to inform the in-home control device 13' on the receiving side that switching communication is to be started, the PB oscillator 7 is driven and, for example, a PB double signal button [C] signal is sent out (PB double signal [C] is 852
As in the case of signal [A], there is no risk of erroneous generation with a signal that combines two frequencies of Hz and 1633 Hz).
The transmitted PB multiplied signal C] is transmitted to the in-home control device 13' on the receiving side in the same manner as described above.

The control circuit 15' of the in-home control device 13' on the receiving side analyzes the PB multiplied signal C] in the same way as described above, and as a confirmation, the same <
PB double signal C], and a cutting procedure is performed at timing T1 regardless of the on-footer state/off-footer state. Here, by performing the disconnection procedure also in the off-footer, the in-home control device 13' can be put into an empty state, and it is possible to receive a non-telephone call later. In addition, in the in-home control device 13' on the receiving side, a timer (not shown) starts timing T4, which is sufficiently longer than the connection time on the calling side, in case there is no subsequent non-telephone call due to an abnormality in the equipment on the calling side. , when this times out, (a) in the case of an off-footer, the calling procedure is automatically carried out; (b) in the case of an on-footer, a transition is made to the normal empty state. With this abnormality processing, even if an abnormality occurs with an off-footer, the telephone automatically enters a calling state, and the abnormality can be notified to the operator on the receiving side using a busy tone, howler, etc. from the handset.

When the control circuit 15 of the home control device 13 on the calling side receives the PB double signal C] from the home control device 13' on the receiving side, it takes a disconnection procedure at timing T2 (T2>TI). Here, the timing T2 is set to be longer than the above-mentioned timing T1, which can be considered to be sure that the called party has disconnected by then.

After this, the control circuit 15 of the in-home control device 13 on the calling side
The non-telephone device 2 is activated through the non-telephone interface circuit 8, and upon receiving an activation response from the non-telephone device 2, a non-telephone call is made to the line through the line interface circuit 3.

At this time, if dialing from the network is possible, the dial that has been stored in preparation for making a call is sent out.

Therefore, it is possible to connect to the person with whom you made a telephone conversation.

The subsequent sequence is the same as in the case of a normal non-telephone connection, and non-telephone communication is started with the in-home control device 13' on the called side.

Note that during the above switching procedure, the in-home control device 13 on the receiving side
′, if there is another call, the in-home control device 13 of the calling party
A non-telephone call from a caller will be marked as busy, but since the time required for the above switching procedure is very short, the probability that another call will occur is extremely small. Since the "busy" display is given from the network, the operator can easily see this and does not cause unnecessary confusion.

Next, we will explain the operation when returning from non-telephone communication to telephone call in the third section.
This will be explained with reference to the drawings.

When the switch key 11 is pressed while communication is being performed with the non-telephone device through the procedure described above, the control circuit 15 of the in-home control device 13 on the calling side switches the non-telephone device interface circuit to the non-telephone device 2. A cutting instruction is sent through 8. Further, the control circuit 15 sends a disconnection signal to the network through the line interface unit 3. After this, a disconnection procedure is performed between the network and the home control device 13, and the home control device 13
will be restored. Note that the above procedure can be performed in the same manner even when receiving a disconnection signal from the non-telephone device 2.

On the other hand, the network transfers this disconnection request and transmits a disconnection signal to the home control device 13' on the receiving side.

In the control circuit 15' of the in-home control bag ji13' on the receiving side,
When this disconnection instruction is received through the line interface section 3', a disconnection procedure is performed with the network to restore the network.

After recovery, the control circuit 15 of the in-home control device 13 on the calling side enters a normal non-transparent telephone calling operation at a timing T3 that is necessary and sufficient for the in-home control device 13' on the called side to recover. This operation is similar to the telephone call operation described above with reference to FIG. However, regarding the dial, when making the first call, the stored dial is sent out in preparation for subsequent calls. Therefore, it is possible to connect to the party with whom the communication was first switched from a telephone call to a non-telephone device.

The in-home control device 13' on the receiving side returns a response as soon as the call is received if it is in an off-hook state, and returns a response via an off-footer after ringing if it is in an on-hook state, thereby establishing a telephone conversation state with the in-home m device 13 on the calling side. become.

In addition, during the above-mentioned failback procedure, the in-home control device 1 on the receiving side
3', when another call is received, the calling party's home control device 1
Although the call from No. 3 is busy, the time required for the above-mentioned cutback procedure is very short, so the probability that another call will be received is extremely small. Even if a call occurs, a busy display is given to the in-home control device 13 on the calling side from the network, so the operator can easily notice this and will not cause unnecessary confusion.

As described above, the switching communication system according to the present invention performs switching after disconnecting the call once, but it is difficult for the operator to use the digital
The home control device 13 operates using a man-machine interface similar to conventional switching communication performed by making a link request.

The above explanation is based on the case where the switching key 11 is pressed from the in-home control device 13 on the calling side, but as shown in FIG. 11, the in-home control device 13' on the receiving side sends, for example, the PB signal button [D] and the double signal PB signal [D] of 941 Hz and 16331 (2 of z).
The fact that there is no risk of erroneous generation with a signal that combines frequencies is the same as in the case of signal [A]. Switching communication from the home control device 13' can be realized.

FIG. 5 is a flowchart showing the operation flow of the control circuit 15 in FIG. 1 when making and receiving calls.

First, there is an idle state of the home control device (If control circuit 15), and from this state there are two cases: off-hook and proceeding to making a telephone call, or proceeding to a non-telephone call, or receiving an incoming call from the other party. The flow of operations is shown for each case, but there is no need to explain them again.

FIG. 6 is a flowchart showing the flow during the switching operation of the control circuit 15 in FIG.

First, there is a state in which the in-home control device (control circuit 15) is in the middle of a telephone conversation as the calling party, and thereafter, there are cases when going on-hook, when pressing the switch key 11, and when receiving a PB [D] double signal from the other party. There are 1 and the flow of operations for each of them is shown. There is no need to explain these further.

FIG. 7 is a flowchart showing the flow when the control circuit 15 in FIG. 1 performs the switching operation.

First of all, inside the house? There is a state in which the I device (control circuit 15) is in a telephone conversation as the receiving party, and below, there are two cases: on-hook, receiving a PB [A] signal from the other party, and
There are cases in which the switching key 11 is pressed, and the subsequent operation flow is shown for each case, which is the same as in the case of FIG.

〔Effect of the invention〕

As explained above, the present invention automatically performs end-to-end mutual communication using the PB signal, temporarily disconnects a normal non-transparent telephone call, and re-calls a non-telephone call. Since switching communication is performed by switching, normal non-transparent communication is possible during the telephone conversation prior to switching, so you can talk without paying high charges. Furthermore, since there is no need to be aware of the digital 1 link when making a telephone call, there is no need to press the digital 1 link request key prior to the call, and there are advantages such as the digital 1 link request key itself becoming unnecessary. .

Furthermore, when the present invention is implemented in combination with conventional switching communication, even if you forget to press the digital 1 link request key, or if switching communication becomes necessary after starting a telephone conversation, you will not have to press the switching key. It has advantages such as being able to perform switching communication.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an example of the configuration of an in-home control device used when implementing the switching communication method according to the present invention, and FIG. 2 is a sequence diagram for switching communication from a telephone call to a non-telephone communication according to the present invention. FIG. 3 is an explanatory diagram showing the sequence when switching back from non-telephone communication to telephone call, and FIG. 4 is an explanatory diagram showing the sequence when switching from the in-home control device on the receiving side. 5 is a flowchart showing the operation flow of the control circuit 15 in FIG. 1 when making and receiving calls, FIG. 6 is a flowchart showing the flow of the switching operation of the control circuit 15 in FIG. 1, and FIG. 1 is a flowchart showing the flow of the switching operation of the control circuit 15, FIG. 8 is a block diagram showing the circuit configuration of the home control device used in the conventional switching communication system, and FIG.
The figure is an explanatory diagram showing a conventional switching sequence. Code explanation 1... Conventional home control device, 2... Non-telephone equipment, 3
...Line interface section, 4...Telephone circuit, 5.
... Codec, 6... Dial switch, 7...
PB oscillator, 8... non-telephone interface circuit, 9.
... Selector switch, 10... Control circuit, 11... Switching key, 12... Digital 1 link request key, 13
...Home control device implementing the present invention, 14...PB
Signal receiver, 15...control circuit

Claims (1)

[Scope of Claims] 1) Communication performed with the other party using a home control device that not only includes a telephone circuit but also accommodates non-telephone equipment,
In a switching communication system for switching from telephone communication to communication using non-telephone equipment (hereinafter referred to as non-telephone communication) or vice versa, the home control device is equipped with means for transmitting and receiving means for push-button dialing signals, and upon switching, After converting a specific push-button dial signal with the other party's home control device using the transmitting means and receiving means, the telephone communication that was previously conducted via the non-transparent communication path is once disconnected. 1. A switching communication system characterized in that the communication path is switched to start non-telephone communication via a digital 1-link communication path, or vice versa.