JPH09135296A - Communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize stable data communication by preventing the generation of an error in data brought by a call waiting telephone informing signal so as to prevent the abnormal finish of data communication brought by the error of a modem. SOLUTION: When a call setting a station connected with another station to be a call-incoming station is generated, a call waiting service providing means 4a gives a prescribed call-waiting telephone signal to a signal to be given to a station to be the call-incoming station by superimposing so as to inform the call-incoming side of a call-incoming during speech. But when a judging equipment 6 judges whether the station to be the call-incoming station is under communication or not when a call setting the station connected to another station to be a call incoming station is generated by referring to a telephone number table 5 and judges that the station is under communication, a call waiting service providing stopping means 4b prohibits the call waiting service providing means 4a from outputting a call waiting signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention calls a called station in response to a call from the calling station, and when the called station responds, the called station and the called station are switched and connected. The present invention relates to a communication system that enables communication.

[0002]

2. Description of the Related Art If a line connection request (calling) is made from a third station C to station A during a call using a telephone line between station A and station B, this is called A service (so-called call waiting service) for informing the station is provided by, for example, a public telephone network.

In the above service, for example, when the station A subscribes to this service, when the line connection request from the third station C to the station A is issued, the exchange switches the normal conversation (B
A predetermined call waiting signal (for example, an intermittent signal sound of 400 Hz) is multiplexed with the signal given from the station to the station A) to notify the station A that there is a connection request.

Such a service does not pose a special problem in a normal voice conversation between people. However, when an information processing device including a personal computer is connected by a telephone line and data is transmitted and received, this call waiting signal becomes noise to the transmitted data,
It may cause an error in the transmitted data.

In Japanese Patent Laid-Open No. 4-313940, in order to avoid the problem that the cause cannot be identified at the receiving station when such image disturbance occurs due to noise mixing in FAX transmission / reception, during data communication. A technique is provided in which a receiving station is provided with a means for detecting a line connection request signal from another station that has entered, and when this request signal is detected, a technique for displaying this and notifying the operator operating the receiving station is provided. It is disclosed.

However, the conventional technique described in Japanese Patent Laid-Open No. 4-313940 has the following problems. That is, if the solution disclosed in Japanese Patent Laid-Open No. 4-313940 is used, it is still impossible to avoid noise contamination in the data being communicated. This can be handled by any communication means such as a facsimile that can continue the communication although the image is disturbed even if a data error occurs due to the call waiting signal. For example, in the case of data communication using an analog modem , The modem may generate an error due to the call waiting signal, and the data communication may be terminated abnormally in the middle, and the communication cannot be continued.

[0007]

As described above, conventionally,
It is not possible to prevent an error in the data due to the call waiting signal, and it is inevitable that the communication becomes abnormal. For this reason, if a call waiting signal arrives during data communication and an error occurs in the data, it is necessary to take measures such as communication again, resulting in extra labor, time and cost. There was a problem.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to prevent an error in data from being caused by a call waiting signal, thereby abnormally ending data communication due to an error in a modem. Another object of the present invention is to provide a communication system capable of avoiding the above and realizing stable data communication.

[0009]

In order to achieve the above object, a first invention is that when a call is made with a station in a connection state with another station as a called station, the called station A call-in-call notification means, such as a call waiting service providing means, for giving a predetermined call-in-communication-call notification signal by superimposing it on a signal given to another station, and a station in a connection state with another station. When a call is made, it is determined whether or not the station serving as the called station is in data communication, for example, a determination means including a TEL number table and a determination device, and notification such as call waiting service provision stopping means. Signal output prohibiting means, and when the judging means judges that the station to be the called station is in data communication, the notification signal output prohibiting means causes the communication in-coming call notifying means to notify the station. Incoming call And to prohibit output of the signal.

In addition to the first aspect of the present invention, a second aspect of the present invention is provided with an incoming call notifying means including, for example, a notifying device and an incoming call occurrence notice processing means, and the station that becomes the called station by the determining means is data communication. When it is determined that the incoming call is received, the incoming call notifying means uses the data communication protocol while continuing the existing data communication between the called station and another station. The call originating station is notified to the station that is the called station.

In addition to the first or second aspect of the invention, a third aspect of the invention is to add the call when the station which is the called station is determined to be in data communication by the determining means. Converts a voice signal output from the calling station that issued it into voice data that is suitable for the protocol of data communication that has already been performed between the station that is the called station and another station. Means, while continuing the data communication that has already been performed between the station to be the called station and other stations,
A voice data sending means such as a voice transfer processing means for giving the voice data to the station which is the called station by using the data communication protocol, and a voice data transmitting means provided in a predetermined station and using the data communication protocol. When the audio data is given, the audio data is reproduced from the audio data, and an inverse conversion means such as an audio exchange processing means is provided.

Further, a fourth invention is characterized in that the incoming call notification means in the second invention or the third invention is an electronic mail,
It is assumed that the incoming call is notified by any one or a combination of moving image data, still image data, character data and sound data.

A fifth aspect of the present invention has information indicating the connection form in which the determination means according to any one of the first to fourth aspects of the invention is preliminarily designated to reject the incoming call notification during communication. Data communication is being performed by determining that the station connected in the connection form indicated by this information is the station in data communication, or by recognizing the physical characteristics of the communication of the station that is the called station. Whether or not to decide.

By taking such a means, when a call is made in which the station connected to another station is the called station, it is judged whether or not the called station is performing data communication. If data communication is not being performed, the occurrence of an incoming call is notified by superimposing the signal given to the station that will be the called station and giving a predetermined incoming call notification signal during communication. If so, output of the incoming call notification signal during communication is prohibited. Therefore, it is possible to prevent the in-communication incoming call notification signal from being superimposed on the data received by the station that is the incoming call station, and to prevent the occurrence of data error due to the in-communication incoming call notification signal.

Further, according to the second invention, when the station which is the called station is in data communication and the output of the incoming call notification signal during communication is prohibited, that is, the incoming call is notified by the incoming call notification signal during communication. If the notification of the occurrence of the incoming call is not given, the incoming call is generated using the protocol of the data communication while continuing the data communication already performed between the station that is the called station and the other station. The station that will be the called station is notified. Therefore, the occurrence of an incoming call can be known at the station that is the called station while preventing the occurrence of data error.

Further, according to the third aspect of the invention, when the determining unit determines that the station to be the called station is in data communication, the voice signal output from the calling station that originated the call is Converted into voice data suitable for the protocol of data communication already performed between the station to be the called station and other stations,
The voice data is given to the station to be the called station by using the protocol of the data communication while continuing the data communication already performed between the station to be the called station and another station. Then, when the voice data is given using a data communication protocol, the station to be the called station reproduces the voice signal from the voice data. Therefore, the voice transmission is performed while the data communication is continued.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of a communication system communication system according to the present embodiment.

In this communication system, a large number of stations (here, only the first station 1, the second station 2 and the third station 3 are shown) are connected to the exchange 4. A TEL number table 5, a determination device 6, a notification device 7, and a network interface 8 are provided in association with the exchange 4.

The exchange 4 is capable of arbitrarily connecting and connecting the accommodated stations to each other to enable communication between the stations. In addition to processing means for making an exchange connection, the exchange 4 provides a call waiting service providing means for notifying an incoming call by a waiting call signal when a call in which a station in a busy state is designated as an incoming call occurs. 4a, and a call waiting service provision stopping means 4b that performs a process of inhibiting output of the call waiting signal by the call waiting service providing means 4a according to the determination result of the determination device 6.

Each station optionally includes those for only data communication, those for only voice communication, and those for selectively performing data communication and voice communication. The first station 1 selectively performs data communication and voice call, and is connected to the information processing device 11 for performing data communication, the telephone 12 for performing voice call, and the information processing device 11 and the telephone 12 respectively. Modem 13
Having. The second station 2 is for performing only data communication, and includes a server device 21, a modem 22 and a network interface (network I / F) 23 connected to the server device 21, respectively. It should be noted that the server device 21 of the second station 2 should not affect the original data transmission when the execution designation of the incoming call notification is notified from the notification device 7 via the Internet and the network I / F 23. Incoming call occurrence notification processing means 21a for notifying the communication partner station that an incoming call has occurred.

The TEL number table 5 shows a combination of stations capable of data communication (registered in advance),
It is for storing as a combination of telephone numbers of each station.

When a call occurs in which the station in the busy state is designated as the called station, the determination device 6 determines whether or not the station designated as the called station is performing data communication.
The determination is made by referring to the number table 5.

The notification device 7 sends a call from the determination device 6 when a call in which a station in the busy state is designated as a called station occurs and the station designated as the called station is performing data communication. Upon receipt of the notification to that effect, the other station performing data communication with the station designated as the called station is notified to notify that the incoming call has occurred. The notification from the notification device 7 to the station is performed via the network I / F 8 using the Internet, which is a wide area network.

Next, the operation of the communication system configured as above will be described. In FIG. 1, the first station 1 has a general form in the case of performing communication using a personal computer in a general home, for example. The second station 2 conceptually shows the most basic configuration of a so-called Internet provider. Therefore, the first station 1 performs both voice communication and data communication. And the first station 1
Shall subscribe to the call waiting service.

First, consider a case where the first station 1 makes a voice call with the third station 3. At this time, the telephone 12 of the first station 1 is connected to the telephone (not shown) of the third station 3 via the modem 13 and the exchange 4, and the user of the first station 1 and the user of the third station 3 are connected to each other. You can make a voice call between them. At this time, in the first station 1, the modem 13 is merely passed through for branching the connection, and does not perform processing for a call.

In this state, when a call with the first station 1 designated as the called station occurs from another station (not shown), the exchange 4 detects that the first station 1 is busy. Then, the exchange 4 notifies the determination device 6 that an incoming call to the busy first station 1 has occurred. Then, the determination device 6
Determines whether the first station 1 and its communication partner (here, the third station 3) are performing data communication.

Here, since the third station 3 is dedicated to voice communication, data communication is not performed between the first station 1 and the third station 3, and the TEL number table 5 shows the first station 1 If the connection form between the third station 3 and the third station 3 is not registered, the determination device 6 determines that the first station 1 and the third station 3 are not performing data communication. At this time, in the exchange 4, the call waiting service providing stopping means 4b does not prohibit the call waiting service from being provided, and the call waiting service providing means 4a provides the call waiting service to the first station 1 by a well-known procedure. Therefore, the user of the first station 1 can know that an incoming call from another station has occurred while talking to the third station 3.

Next, the case where the first station 1 and the second station 2 are performing data communication will be described. Generally, first station 1
In order to perform data communication with the second station 2, the contract with the second station is bypassed, and an account for accessing the server device 21 and the telephone number of the second station 2 are obtained.
A case where the contracted first station 1 communicates will be described with reference to FIG.

First, a line connection request is issued to the second station 2 to connect by TEL (L1 in FIG. 2). This is the connection between modem 13 and modem 22. Next, a software connection is established between the information processing device 11 and the server device 21. For software connection, PPP (L2 in FIG. 2) is used as a data link layer, and so-called TCΡ / Ι is used as a network layer and a transport layer.
Ρ (Transmission Control Protocol / Internet Protoco
l: L3 and L4 in FIG. 2 are used. For ΡΡΡ, refer to “The Point-to-Point Protocol (PPP)”, W.Si.
mpson et al., Network Working Group, RFC1661 etc.

When the connection is established between the first station 1 and the second station 2 in this manner, the first station 1 can obtain the information provided on the WWW system, for example. W
The protocol that realizes the WW system is http (L5 in FIG. 2), and corresponds to the session layer, the presentation layer, and the application layer of the OSI reference model.
As for http, please refer to "Hypertext Transfer Proto
col --HTT / 1.0 ”, .Berners-Lee et al, HTTP Working
Group, NTERNE -DRAFT, September 4, 1995, etc.

In FIG. 3, in the information processing apparatus 11, World
An example of screen display when using the Wide Web is shown below. In the figure, S indicates the entire screen. In the figure, W1 is Worl
Information on the hyperlink structure provided on the d Wide Web is used, for example, in the World Wide developed at the University of Illinois in the United States.
The area displayed by Web Browse software "Mosaic" is shown. W2 indicates an area of an image displayed by an application other than the World Wide Web Browser when the application is activated. As shown in this figure, the image of the region W2 is displayed so as to overlap the image of the region W1.

Next, while the first station 1 and the second station 2 are performing data communication as described above, the third station 3
A case will be described with reference to the processing flowchart of FIG. 4 in which a call is made by designating the first station 1 as a call destination.

First, when the third station 3 issues a connection request designating the first station 1 as a call destination to the exchange 4 (step ST1), the exchange 4 is talking to the first station 1. It is checked whether or not (step ST2), and if not in a call, a normal connection is made (step ST3). However, since the first station 1 is currently in a call with the third station 3, the communication performed by the first station 1 with the third station 3 in the determination device 6 is data communication and normal conversation (voice call). It is determined which of the above is referred to the TEL number table 5 (step S
T4 and step ST5). That is, first, referring to the TEL number table 5, the TEL number of the first station 1 is TE
It is checked whether or not it is registered in the L number table 5 (step ST4). If the TEL number of the first station 1 is not registered in the TEL number table 5, it is determined that the conversation is normal conversation, and the call waiting service providing means 4a notifies the first station 1 by a call waiting signal (step ST6). . If the TEL number of the first station 1 is registered in the TEL number table 5, it is further checked whether or not the paired TEL numbers match the TEL number of the second station 2 currently in communication. Yes (step ST5).
If the paired TEL number does not match the TEL number of the second station 2, it is determined to be a normal conversation, and the call waiting service providing means 4a notifies the first station 1 by a call waiting signal (step ST6). ). If the TEL number matches the TEL number of the second station 2, it is determined that data communication is in progress.

Here, in the TEL number table 5, combinations of TEL numbers capable of data communication are registered and stored in advance. That is, the TEL numbers of two stations that may perform data communication with each other are “11”, respectively.
In the case of 1-222 "and" 333-444 ", two TEL numbers are described as a pair in the TEL number table 5, such as" 111-222, 333-444 ". The registration information to 5 can be created by a method in which the user of the first station 1 applies to the operator who manages the exchange, or the list is provided from the communication service provider of the second station 2. It can also be created by receiving.

Since the first station 1 may perform data communication with the second station 2, the combination of the TEL number of the first station 1 and the TEL number of the second station 2 is registered in the TEL number table 5. If so, the determination device 6 determines that data communication is in progress. In this case, the call waiting service providing stopping means 4a prohibits the call waiting service providing means 4a from outputting the call waiting signal (step ST7). Further, the notification device 7 notifies the first station 1 that the third station 3 has received a connection request.
To the server device 21 (step ST8). In order for the notification device 7 to notify the server device 21,
In this embodiment, the Internet, which is a wide area network, is used via the networks I / F8 and 23.

In the server device 21 which has received the notification, the incoming call occurrence notification processing means 21a uses the electronic mail on TCP / IP used for data communication with the first station 1 to notify the first station 1. The generation of an incoming call is notified to the terminal (step ST9). If you use the electronic mail, the content that the line connection request is made from the third station 3,
It is possible to notify the first station 1. SMT is a protocol for realizing electronic mail on TCP / IP.
P (eg "Simple Mail Transfer Protocol", RFC
821) and POP3 (eg "Post Office Pr
otocol ”RFC 1081, 1082).

When the information processing apparatus 11 of the first station 1 receives the notification by electronic mail, it displays a screen as shown in FIG. 5, for example. That is, the icon I indicating that the electronic mail has arrived is newly displayed on the screen shown in FIG. Software for automatically displaying the icon I on the screen when an electronic mail arrives is well known, and this well known software may be used.

The user of the first station 1 displays the icon I on the screen S.
By reading the received electronic mail using the electronic mail software in response to the display of "," there was an incoming call from the third station 3 without abnormal termination of data communication due to a modem error. You can know. In addition,
The software model at this time is shown in FIG. Compared with FIG. 2, the layer corresponding to the session layer, the presentation layer, and the application layer of the OSI reference model is L
P0P3 shown by 6 is added.

(Second Embodiment) Next, the second embodiment of the present invention will be described.
An embodiment will be described. FIG. 7 is a diagram showing the configuration of the communication system according to the present embodiment. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In this communication system, a large number of stations (here, only the first station 10, the second station 20 and the third station 3 are shown) are connected to the exchange 4. Further, in association with the exchange 4, the TEL number table 5, the determination device 6, the network I / F 8 and the protocol conversion device 9
Is provided.

That is, in the communication system of this embodiment, instead of the first station 1, the second station 2 and the notification device 7 in the first embodiment, a first station 10, a second station 20 and a protocol conversion device 9 are provided. Each has a configuration.

The first station 10 selectively performs data communication and voice communication, and has a telephone 12, a modem 13, and an information processing device 14 for performing data communication. That is, the first station 10 replaces the information processing apparatus 11 in the first station 1 of the first embodiment with the information processing apparatus 1
4 is provided. The information processing apparatus 14 has a processing unit for transmitting / receiving data to / from another information terminal such as a server device, and a voice transmission / reception for transmitting / receiving voice to / from another information terminal. Processing means 14a
have.

The second station 20 has a server device 24 in place of the server device 21 in the second station 2 of the first embodiment.
Is provided. And this server device 2
Reference numeral 4 denotes a voice transmission / reception processing means 24a for transmitting / receiving a voice to / from another information terminal, in addition to a processing means for transmitting / receiving data to / from another information terminal such as an information processing device. Have

The protocol conversion device 9 is connected to the determination device 6, the network I / F 8 and the third station 3, respectively. This protocol conversion device 9 causes the determination device 6 to notify when a call in which a station in the busy state is designated as a called station occurs and the station designated as the called station is performing data communication. When a voice signal output from the calling station is received, it is transmitted from the partner station that is in data communication with the station designated as the called station to the station designated as the called station. After the protocol is converted so that it can be processed, the data is given to the other station that is performing data communication with the station designated as the called station. On the contrary, the protocol conversion device 9 performs the reverse conversion of the protocol conversion on the voice data given from the station designated as the called station through the partner station of the data communication to reproduce the voice signal. The audio signal is given to the calling station. Data exchange between the protocol conversion device 9 and other stations is performed via the network I / F 8 using the Internet, which is a wide area network.

Next, the operation of the communication system configured as above will be described. The communication system according to the present embodiment, when a call in which a station in a busy state is designated as a called station occurs, a process of determining whether or not the called station is performing data communication, and a call waiting service Regarding the process of providing / prohibiting providing, step ST1 in FIG.
The process is performed in the same way as the communication system in the first embodiment as shown in step ST7.

The operation of the communication system of this embodiment is different from the operation of the communication system of the first embodiment when the station which is the called station is determined to be performing data communication by the above-described processing. This is an operation, and this point will be described below.

That is, for example, the first station 10 and the second station 20
When the third station 3 makes a call with the first station 10 designated as the call destination in the state where and are performing data communication,
The protocol converter 9 converts the audio signal output from the third station 3 into an audio transmission protocol on TCP / ΙP,
Server device 24 via network I / F 8, 23
(Step ST11). Note that the audio signal is
As a method of converting into a voice transmission protocol on CP / ΙP, for example, INETPhone (“IN TPhone: Teleph
one Services and Servers on Internet ”, RFC 1789)
Can be used.

Upon receiving the voice data from the protocol conversion device 9, the server device 24 sends this data to the first station 10
To be given to the information processing device 14 (step S).
T12). Since the voice data given to the server device 24 from the protocol conversion device 9 is a TCP / ΙP packet, the server device 24 may simply forward the packet.

The information processing device 14 of the first station 10 receiving this packet decodes the packet, reproduces a voice signal, and outputs it as a normal voice through a speaker device (not shown).

On the other hand, voice is also transmitted from the first station 10 to the third station 3 in the reverse flow of the above. First station 10
The voice uttered by the user is converted into a voice signal by a microphone (not shown) and then taken into the information processing device 14. The information processing device 14 uses the captured audio signal as T
After being encoded into voice data according to the voice transmission protocol on CP / ΙP, the second station 20 via the modem 13
Output to. Upon receiving the voice data, the second station 20 gives this voice data to the protocol conversion device 9 via the network I / Fs 23 and 8. The protocol conversion device 9 reproduces a voice signal from the voice data given from the second station 20 by inverse conversion, and gives this voice signal to the third station 3.

The processing for transmitting / receiving the voice data packet between the information processing apparatus 14 and the server apparatus 24 is performed by the voice transmission / reception processing means 14a, 24a of both apparatuses.

As described above, according to the present embodiment, an error in data communication between the first station 10 and the second station 20 caused by the call waiting signal is prevented, and the user of the first station 10 makes the second call. The voice call with the third station 3 can be performed without stopping the data communication with the station 20.

The present invention is not limited to the above embodiments. For example, in the first embodiment, the notification device 7 once notifies the partner station of the data communication with the station serving as the called station, and as a result, the partner station of the data communication calls the station serving as the called station. However, the notification device 7 may directly notify the station serving as the called station of the occurrence of the incoming call.

In the above-described first embodiment, the notification of the occurrence of the incoming call to the station that is the called station is performed by electronic mail. However, for example, moving images, still images, sounds, characters, etc., can be sent by electronic mail. You may notify by other than. In the case of electronic mail, the protocols such as SMTP and P0P3 were used. To notify by these methods, use Server Pus
h (“http://www.netscape.com/home/demo/1.1b1/push
pull.html ”, Netscape Communications Corporation
) Can be realized by using the technology. This Serve
When r Push is used, data (that is, moving image, still image, sound, etc.) that can be handled by the WWW client is displayed on the screen displayed to the user of the WWW client (corresponding to the first station 1 and the first station 10 in the embodiment). Characters, etc.) can be displayed from the server device side.

In the first embodiment, the notification device 7 notifies the station that is the called station of the occurrence of the incoming call. However, this notification need not be given. In each of the above-described embodiments, the data communication is performed by the connection using the TCP / IP protocol, but the present invention can be applied to the case where a well-known protocol other than the TCP / IP protocol or a dedicated protocol is used. Is. However, the present invention is not limited to this.

In each of the above-described embodiments, the notification of the data communication with the station to be the called station and the transmission / reception of the voice data are performed using the Internet. The medium is not limited to the Internet, and any medium such as a public telephone line can be used.

In each of the above-mentioned embodiments, the combination of the TEL numbers of the stations performing the data communication is described and the TEL number table 5 is referred to determine whether or not the data communication is performed. It is also possible to determine whether or not the data communication is performed by another method such as determining based on the physical characteristics of the communication measured by using a measuring device such as an analyzer. In addition, if it is determined whether or not the data communication is based on the physical characteristics of the communication measured by the measuring device as described above, the combination of the stations performing the communication is the data communication and the voice call. Even if any of the
It can be determined whether data communication or voice call is actually performed. In addition, various modifications can be made without departing from the spirit of the present invention.

[0058]

According to the first aspect of the present invention, when a call with a station connected to another station as a called station occurs, a predetermined signal is superimposed on a signal given to the called station. When an incoming call is generated by a station that is connected to another station and an in-communication incoming call notifying means, such as a call waiting service providing means, which gives the in-communication incoming call notification signal It is determined whether or not the station to be connected is in data communication, for example, TE
When it is determined by the determining means that the called station is in data communication, the determining means includes an L number table and a determining device, and a notification signal output inhibiting means such as a call waiting service providing stopping means. The notification signal output prohibiting unit prohibits the communication incoming call notification signal from being output to the station by the communication incoming call notification signal.

In addition, in addition to the above-mentioned first invention, a second invention is provided with an incoming-call notification means comprising, for example, a notification device and an incoming-call occurrence notification processing means, and the station which becomes the called station by the judging means performs data communication. When it is determined that the incoming call is received, the incoming call notifying means uses the data communication protocol while continuing the existing data communication between the called station and another station. The call originating station is notified to the station that is the called station.

A third invention, in addition to the first invention or the second invention, makes a call when the station to be the called station is determined to be in data communication by the determination means. Converts a voice signal output from the calling station that issued it into voice data that is suitable for the protocol of data communication that has already been performed between the station that is the called station and another station. Means, while continuing the data communication that has already been performed between the station to be the called station and other stations,
A voice data sending means such as a voice transfer processing means for giving the voice data to the station which is the called station by using the data communication protocol, and a voice data transmitting means provided in a predetermined station and using the data communication protocol. When the audio data is given, the audio data is reproduced from the audio data, and an inverse conversion means such as an audio exchange processing means is provided.

A fourth invention is that the incoming call notifying means in the second invention or the third invention is an electronic mail,
It is assumed that the incoming call is notified by any one or a combination of moving image data, still image data, character data and sound data.

A fifth aspect of the present invention has information indicating the connection mode in which the determination means according to any one of the first to fourth aspects of the invention is preliminarily designated to reject the incoming call notification during communication. Data communication is being performed by determining that the station connected in the connection form indicated by this information is the station in data communication, or by recognizing the physical characteristics of the communication of the station that is the called station. Whether or not to decide.

With these, it is possible to prevent an error from occurring in the data due to the incoming call notification signal during a call, thereby avoiding the abnormal termination of the data communication due to the error of the modem, and to realize a stable data communication. Become.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a communication system communication system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a protocol configuration of data communication.

FIG. 3 shows the World Wide in the information processing apparatus 11 in FIG.
The figure which shows the example of a screen display when using the Web.

FIG. 4 is a processing flowchart of the communication system shown in FIG.

FIG. 5 shows the World Wide in the information processing apparatus 11 in FIG.
The figure which shows the example of a screen display when using the Web and receiving an electronic mail.

FIG. 6 is a diagram showing a protocol configuration of data communication when an incoming call is notified by electronic mail.

FIG. 7 is a diagram showing a configuration of a communication system communication system according to a second embodiment of the present invention.

8 is a flowchart of processing in the communication system shown in FIG.

[Explanation of symbols]

1, 10 ... First station 11, 14 ... Information processing device 14a ... Voice exchange processing means 12 ... Telephone 13 ... Modem 2, 20 ... Second station 21, 24 ... Server device 21a ... Incoming call occurrence notification processing means 24a ... Voice Transfer processing means 22 ... Modem 23 ... Network interface (network I /
F) 3 ... Third station 4 ... Switch 4a ... Call waiting service providing means 4b ... Call waiting service providing stopping means 5 ... TEL number table 6 ... Judgment device 7 ... Notification device 8 ... Network interface 9 ... Protocol conversion device

Claims (5)

[Claims] 1. A called station is called in response to a call from the calling station, and when the called station responds, the calling station and the called station are exchange-connected to enable communication. In a communication system, when a call occurs with a station connected to another station as a called station, a predetermined incoming call notification signal during communication is superimposed on a signal given to the called station. When a call is made in which a station that is in a state of connection with another station and a call receiving means that is in communication with the other station is called, it is determined whether or not the station to be the called station is in data communication. And a determination means for prohibiting output of the in-communication incoming call notification signal by the in-communication incoming call notification means to the station when the station serving as the incoming call station is determined to be in data communication. And a notification signal output inhibiting means. 2. When the determining unit determines that the station serving as the called station is in data communication, the data communication that has already been performed between the station serving as the called station and another station is continued. 2. The communication system according to claim 1, further comprising an incoming call notifying means for notifying the station to be the called station of the occurrence of an incoming call using the data communication protocol. 3. When the determining unit determines that the station serving as the called station is in data communication, the voice signal output from the calling station that originated the call is transmitted to the station serving as the called station and others. The conversion means for converting into voice data suitable for the protocol of data communication already performed with the station, and the data communication already performed between the station to be the called station and the other station are continued. Up to a voice data sending means for giving the voice data to the station which is the called station by using the data communication protocol, and the voice data is provided by using a data communication protocol provided at a predetermined station. The communication system according to claim 1 or 2, further comprising an inverse conversion means for reproducing the audio signal from the audio data. 4. The incoming call notification means notifies the incoming call by any one or a combination of electronic mail, moving image data, still image data, character data and sound data. The communication system according to claim 2 or claim 3. 5. The determination means has information indicating a connection form in which designation of refusing the incoming call notification during communication is made in advance, and data communication is performed on a station connected in the connection form indicated by this information. It is characterized in that it is either determined to be an intermediate station or to determine whether or not data communication is in progress by recognizing physical characteristics of communication of a station which is a called station. The communication system according to any one of claims 1 to 4.