JPH04291568A - telematics terminal - Google Patents

Abstract

PURPOSE:To use an idle channel for talking and to utilize the line effectively by providing a radio transfer control means operated independently of picture transmission control means and a system state management means allocating a communication channel to a communication means to the telematic terminal. CONSTITUTION:Radio transfer control sections 5,6 receiving a call request from slave sets 11,12 of a cordless telephone set request dialing to a system state management section 1. The management section 1 confirms an idle channel to command of dialing to an opposite equipment to channel control sections 7,8. When a reply comes from the opposite equipment, a communication changeover control section 2 connects the control sections 5,6 receiving the request and the control sections 7,8 to implement talking processing between the slave sets 11,12 and the opposite equipment. Moreover, when a line control section 9 receives a call from the opposite equipment and the call relates to talking, the management section 1 confirms the idle control sections 5,6 and rings a bell of the slave sets 11,12 and connects the control sections 7,8 and the control sections 5,6 receiving the reply when the reply comes to inform it to the slave set and the opposite equipment. Thus, the line is effectively utilized.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telematics terminal, such as a facsimile, which is connected to an integrated services digital network (hereinafter referred to as ISDN) and is capable of simultaneously transmitting images and audio.

0002

2. Description of the Related Art Recently, in place of the public telephone network, ISDN, which can transmit data in digital binary form without modulation, has been developed. Therefore, telematics terminals such as G4FAX that can be connected to digital networks such as ISDN are currently attracting attention.

[0003] This device has a speed of 64 Kbps (bits
By connecting to ISDN, which has a transmission speed of 1.0 per second, a single A4 document can be sent in a few seconds. In addition, G4FAX is 400 x 400 ppi (pels
per inch) resolution,
Compared to G3 FAX for public telephone networks, it is possible to realize higher-definition image communication.

[0004] Also, the interfaces that ISDN provides to users are an S/T point interface and a U point interface. In the United States, the network uses a U-point interface that does not provide a digital line termination unit (hereinafter abbreviated as DSU), so terminals must be equipped with a DSU. Japan, on the other hand, uses an S/T point interface and the network provides DSU. At the S/T point interface, it is possible to connect eight terminals from the DSU in a bus-like manner.

Furthermore, the ISDN basic interface has two channels for information transmission. Many of the currently commercialized G4FAX systems can allocate channels for image transmission and voice transmission, allowing users to make calls using a handset connected via a cable while communicating documents (Japanese Patent Application Laid-open No. Publication No. 64-22161).

FIG. 2 shows a block diagram of a conventional telematics terminal capable of simultaneous image and voice communication. In the following figures, the same parts are given the same reference numerals.

In the figure, 10 is an ISDN line, 9 is a line control unit that executes ISDN call control processing with the network, 7 and 8 are channel control units that transfer communication data to each channel, and 13 is a , document reading/recording/encoding, G4F
An image transmission control section executes an AX communication procedure or a G3 FAX communication procedure; 14 is an audio transmission control section that converts audio data from digital to analog and communicates; 19 is a handset that inputs and outputs audio data.

[0008] When a user instructs to send a document, first, the line control section 9 calls the other party's device and connects the line. Next, the image transmission control section 13 executes a communication procedure via the first channel control section 7, reads the document, encodes it, and transmits it.

[0009] Furthermore, when the line control unit 9 detects an incoming call regarding document reception from the other party's device, the image transmission control unit 13
Connect the line after confirming that it is not working. Next, the image transmission control section 13 executes a communication procedure via the first channel control section 7, receives the document, decodes it, and records it.

[0010] Next, when the user instructs a call, the line control unit 9 calls the other party's device, connects the line, and then the voice transmission control unit 14 transmits the call via the second channel control unit 8. , the voice data input from the microphone section of the handset 19 is digitized and transmitted, and the received voice data is simultaneously converted into analog and output to the speaker section of the handset 19.

[0011] Furthermore, when the line control section 9 detects an incoming call from the other party's device, the line is connected after confirming that the voice transmission control section 14 is not operating. Next, the audio transmission control section 14 digitizes and transmits the audio data input from the microphone section of the handset 19 via the second channel control section 8, and at the same time converts the received audio data into analog and sends it to the speaker section of the handset 19. Output to.

[0012] In this way, the conventional G4 FAX allows simultaneous document communication and phone calls using the attached handset 19 by assigning different channel control units 7 and 8 to the image transmission control unit 13 and the audio transmission control unit 14, respectively. processing was achieved.

[0013]

[Problem to be solved by the invention] The conventional G4FAX is
Two channels are assigned to image transmission and audio transmission, respectively. Therefore, simultaneous image transmission or simultaneous audio transmission to two destinations cannot be processed.

[0014] Therefore, a means for dynamically allocating two channels for image transmission is provided, and an empty voice transmission channel is used to process simultaneous image transmission to two destinations.
4FAX is also available. However, for general users,
The actual communication of documents takes several hours in a day, and the line occupancy rate is about 10%.

On the other hand, since telephone calls are frequently used and take a long time to communicate, simultaneous voice transmission to two destinations is useful for reducing call traffic. However, the conventional G4
For the following reason, there is no FAX that can effectively utilize vacant image transmission channels to process multiple calls at the same time.

[0016] Most of the conventional G4FAXes are large and cannot be installed on the user's desk. Therefore, the user uses G4F
When using the AX call function, leave your desk and call the FA.
I had to go to the location where X was installed. Because of this inconvenience, users rarely use the G4FAX's call function and have prepared a separate line exclusively for calls. Therefore, manufacturers considered the telephone call function to be an additional function to the original document communication function and did not place particular importance on it.

[0017] Furthermore, by using the eight-terminal bus connection, which is a feature of ISDN, and connecting a plurality of telephones and FAX machines to one line, it is possible to process a plurality of calls at the same time. However, in-house wiring work is required for bus connection. Further, the S/T point interface can use eight-terminal bus connection, but the U point interface cannot use bus connection.

[0018] An object of the present invention is to provide a telematics terminal such as a G4 FAX that is easy to use and has a call function.

[0019]

Means for Solving the Problems In order to achieve the above object, the present invention provides a telematics terminal equipped with at least one image transmission control means for performing image communication with a partner device.
At least one line control means that executes SDN call control processing, channel control means of the same number as the number of channels that execute transmission processing of each channel, and the image transmission control means operate independently, and A system that manages a plurality of wireless transfer control means for controlling connection with the device and performing voice communication, and the usage status of each channel and the image transmission control means and the wireless transfer control means, and executes competition control for communication requests that occur. A state management means and a communication switching control means for connecting one of the image transmission control means or the wireless transfer control means and the channel control means are provided.

The present invention also provides a telematics terminal having means for transmitting at least one image information, means for accommodating at least one ISDN line, and means for voice communication with slave units of a plurality of cordless telephones. All vacant channels not used by the image transmission means are assigned to each voice communication means for control. Further, the present invention provides a telematics terminal having means for transmitting at least one image information, wherein at least one ISD
It is characterized in that it comprises means for accommodating N lines and means for voice communication with slave units of a plurality of cordless telephones, and the total number of the image transmission means and the voice communication means is greater than or equal to the number of channels accommodated.

Further, the wireless transfer control means has a function of detecting whether or not a call can be received by the handset, and the system state management means controls the corresponding wireless transfer control means while the handset is in a state where the call cannot be received. The connection may not be controlled by the channel control means.

[0022] The system status management means may also include a subaddress storage means for managing a number uniquely representing each communication means, and may control connection only to the communication means corresponding to the destination subaddress received by the line control means. good.

[0023] The system state management means also includes means for suspending a call request for a handset in which all channels are in use, waiting for a free channel, and notifying the handset of call availability information based on the channel usage status. It was established.

Furthermore, the system status management means is provided with means for notifying the handset of call availability information based on the channel usage status, regardless of whether or not there is a call request for the handset. Further, the system state management unit stores the number of the calling terminal obtained in the call control process, and upon completion of document reception,
This device is provided with means for notifying the handset of document reception information including speech synthesis information of the stored number.

[0025] Furthermore, the wireless transfer control means has a function of generating bell tones of different frequencies, and controls switching of the bell tones to be generated in response to an incoming call and in sending out a voice announcement indicating the status of the telematics terminal, etc. This means that there is a means to do so.

[0026]

According to the telematics terminal of the present invention, the wireless transfer control means receives a call request from the handset of the cordless telephone and requests the system state management means to make a call. Then, the system state management means checks the available channel and calls the other party's device, and then, via the communication switching control means,
The wireless transfer control means that received the request is connected to the free channel control means, and communication processing between the handset and the other party's device is executed.

Further, according to the telematics terminal of the present invention, when the line control means receives a call from the other party's device, if the incoming call is related to a telephone conversation, the system state management means controls at least one idle wireless transfer control. After checking the means,
The bell of the handset is rung, and if there is a response from the handset, the channel control means and the wireless transfer control means that received the response are connected, and communication processing between the handset and the other party's device is executed.

[0028] In this way, the telematics terminal of the present invention operates as a base unit for a cordless telephone handset located near the user, so that the user has to go to the trouble of visiting the location where the telematics terminal is installed in order to make a call. There is no need to go anywhere.

Further, the telematics terminal of the present invention includes a plurality of wireless transfer control means, and the system state management means:
Since the usage status of each channel and each communication means is managed, multiple calls can be handled simultaneously if the channel is free.

Furthermore, the telematics terminal of the present invention includes:
By using the handset of a cordless phone, it is possible to remotely monitor the device, such as by making voice announcements about the status of the device.

[0031]

Embodiments Hereinafter, embodiments of the telematics terminal according to the present invention will be described.

FIG. 1 shows a system block diagram of G4FAX according to the present invention.

In the figure, reference numerals 11 and 12 are handsets of cordless telephones located at remote locations, and reference numerals 3 and 4 are image transmission control sections similar to the image transmission control section 13 shown in FIG. G of this example
Although 4FAX includes two image transmission control units, it may include any number of image transmission control units.

Reference numerals 5 and 6 are wireless transfer control units that set up a wireless line between the handset 11 or 12, perform digital-to-analog conversion of audio data, and wirelessly transmit the audio data. Although the G4FAX includes two wireless transfer control sections similar to the image transmission control section, it may include any number of wireless transfer control sections. When a user desires to make a call, he or she turns on a call button or the like on the handset. If the wireless transfer control section detects this, it outputs a dial tone to the speaker section of the handset and waits for dialing. Furthermore, while calling the other party's device, a ringing tone is output to the speaker unit of the handset. Furthermore, when a call is received from the other party's device, the bell of the slave device rings. Finally, when the user has finished the call, the user turns off the call button on the handset. The wireless transfer control unit detects this and notifies the system state management unit 1 of the end of the call.

Here, the first image transmission control section 3, the second image transmission control section 4, the first wireless transfer control section 5, and the second wireless transfer control section 6 can each operate independently.

Further, 2 is a communication switching control unit that connects channels and communication means, and 1 is a system status management unit that manages the usage status of each channel and communication means and determines whether or not to accept a communication request that has occurred.

FIG. 3 is a block diagram showing the system state management section 1 and the communication switching control section 2. As shown in FIG. As shown in the figure,
The system state management unit 1 includes a channel state management table 16 that stores the usage status of channels, a transmission status management table 17 that stores the usage status of communication means, and a subaddress management table that stores numbers that uniquely represent each communication means. 18 and a system conflict control unit 15 that uses these tables to determine the conflict conditions of a communication request that has occurred and determines whether the request is acceptable or not. Here, the subaddress management table 18 is used in a third embodiment described later.

The communication switching control section 2 also has a terminal A connected to the first channel control section 7, a terminal B connected to the second channel control section 8, and a terminal C connected to the first image transmission control section 3.
, a terminal D connected to the second image transmission control section 4, a terminal E connected to the first wireless transfer control section 5, and a terminal F connected to the second wireless transfer control section 6. , connect terminal A or B to any one of terminals C, D, E, or F.

FIG. 4 is an explanatory diagram showing the data structure of the channel status management table 16, and information on whether the first channel and the second channel can be used is stored in the "usage status" area.

FIG. 5 is an information explanatory diagram showing the data structure of the transmission status management table 17.
Information regarding whether or not the second image communication, first wireless communication, and second wireless communication can be used is stored in the "usage status" area.

In the "usage status" area in FIG. 4 or 5, for example, a value "0" may be set if the device is usable, and a value other than "0" may be set if the device is not usable.

Next, the G4FAX of this embodiment will be explained using the flowcharts shown in FIGS. 7 to 11.

The system competition control unit 15 starts operating upon receiving communication requests from each communication means (step 701).
). When receiving a call from a partner device via the line 10, the line control unit 9 issues a communication request for receiving a call or receiving a document depending on the attributes of the received call. The image transmission control unit issues a communication request for document transmission when a user transmits a document. The wireless transfer control unit issues a request to initiate a call when the user instructs to start a call from the handset. In steps 702 to 704,
The system contention control unit 15 checks the type of communication request and selects one of the call origination processing (step 705), document transmission processing (step 706), call reception processing (step 707), and document reception processing (step 708). Transition.

FIG. 8 is a flowchart showing the call origination process in step 705.

[0045] Upon receiving the call origination request from the wireless transfer control unit, the system competition control unit 15 refers to the channel state management table 16 and checks whether there is an empty channel (step 801). If there is, it instructs the line control unit 9 to make a call to the other party's device (step 802), and waits for a response from the other party's device (step 803). If the other device responds,
Instructs the communication switching control unit 2 to connect the terminal A or B of the available channel control unit and the terminal E or F of the wireless transfer control unit that issued the communication request, and also sends an instruction to the channel state management table 16. , and sets the corresponding "usage status" area of the transmission status management table 17 to "unusable" (step 804). Next, the system conflict control unit 15 notifies the wireless transfer control unit that issued the communication request of the response from the other party's device, and proceeds to call processing (step 805). In the call processing, the wireless transfer control section receives the audio data input from the microphone section of the handset via wireless, digitizes it, and outputs it to the channel control section.At the same time, the wireless transfer control section receives the audio data input from the channel control section. Make it analog,
It is transmitted to the handset via wireless and output to the speaker section of the handset. Finally, if the system contention control unit 15 detects the end of the call (step 806), it instructs the communication switching control unit 2 to disconnect the route, and updates the channel state management table 16 and the transmission state management table 17. Applicable “
Set the “Usage Status” area to “Available” (Step 8)
07).

If there is no free channel in step 801, the wireless transfer control unit that issued the communication request is notified of the rejection of the communication request (step 808).

FIG. 9 is a flowchart showing the document sending process in step 706. Here, step 904,
Processing other than 905 is the same as the processing in FIG.

In step 903, the system contention control unit 1
5 instructs the communication switching control unit 2 to connect the terminal A or B of the available channel control unit and the terminal C or D of the image transmission control unit that issued the communication request when the partner device responds. In addition, a channel state management table 16, and
The "usage status" area of the transmission status management table 17 is set to "unusable" (step 904). Next, the system contention control unit 15 notifies the image transmission control unit that issued the communication request of the response of the partner device, and proceeds to document transmission processing (
Step 905). In the document transmission process, the image transmission control unit executes a communication procedure with the other party's device, encodes image data of a document read using a scanner, and transmits the encoded image data.

FIG. 10 is a flowchart showing the incoming call process in step 707.

[0050] The system competition control unit 15, which has received the incoming call request from the line control unit 9, refers to the transmission status management table 17 and checks whether there is an available wireless transfer control unit (step 1001). If there is, it instructs all available wireless transfer control units to ring the bells of the slave units (step 1002), and waits for responses from the slave units (step 1003). When a certain handset responds, it instructs the communication switching control unit 2 to connect terminal A or B of the channel control unit and terminal E or F of the wireless transfer control unit that received the response, and also manages the channel status. The corresponding "usage status" areas of the table 16 and the transmission status management table 17 are set to "unusable" (step 1004). Next, the system contention control unit 15 issues the communication request to the line control unit 9.
The terminal instructs the other party to establish a line connection with the other party's device, and proceeds to call processing (step 1005). In the call processing, the wireless transfer control section receives the audio data input from the microphone section of the handset via wireless, digitizes it, and outputs it to the channel control section.At the same time, the wireless transfer control section receives the audio data input from the channel control section. Convert it to analog and send it to the slave unit via wireless,
Output to the speaker section of the slave unit. Finally, if the system conflict control unit 15 detects the end of the call (step 10
06), instructs the communication switching control unit 2 to disconnect the route, and changes the corresponding "usage status" area of the channel status management table 16 and transmission status management table 17 to "
"Usable" (step 1007).

[0051] In step 1001, if there is no usable wireless transfer control unit, the line control unit 9 that issued the communication request is notified of the rejection of the communication request (step 1008).
). FIG. 11 is a flowchart showing the document reception process in step 708. In the figure, step 1101
Processing other than 1103 is the same as the processing in FIG.

[0052] Upon receiving the document reception request from the line control unit 9, the system competition control unit 15 refers to the transmission status management table 17 and checks whether there is an available image transmission control unit (step 1101). If so, it instructs the communication switching control unit 2 to connect the terminal A or B of the channel control unit and the available terminal C or D of the image transmission control unit, and also displays the channel status management table 16 and The corresponding "usage status" area of the transmission status management table 17 is set to "unusable" (step 1102). Next, the system contention control unit 15 issues the communication request to the line control unit 9.
A line connection with the other party's device is instructed, and the process moves to document reception processing (step 1103). In the document reception process, the image transmission control unit executes a communication procedure with the other party's device, decodes the image data of the received document, and prints it using a printer.

As described above, the G4FAX of this embodiment not only improves the ease of use of the call function by using the handset of the cordless telephone, but also has more communication means than the number of channels, and controls the channels competitively to control each communication means. This enables efficient line operation.

[0054] Furthermore, in the embodiment, since an ISDN basic interface is assumed as the line, two channel control units (same number as the number of channels) are provided. It's okay. In this case, if 23 or 24 channel control units and radio transfer control units are provided, a large amount of communication traffic can be efficiently processed. Furthermore, multiple lines can be used depending on communication traffic. For example, if you want to accommodate three ISDN basic interface lines and install six cordless telephone handsets,
It is sufficient to include three line control units, six channel control units, and radio transfer control units.

Next, a second embodiment will be explained.

At step 1002 in FIG. 10, the system contention control unit 15 refers to the transmission status management table 17 and rings all available slave units. However, there may be cases where it is desirable not to ring only a specific handset, such as when a user is absent near the handset. Therefore, in this embodiment, the handset is provided with a button for setting information regarding presence/absence, and the wireless transfer control section is provided with a function of detecting a change in the state of this button.

The system contention control unit 15 monitors all wireless transfer control units in the idle state in which there is no communication request in FIG. 7 (step 709). If any of the wireless transfer control units detects a change in the status of the presence/absence button of the handset, the system conflict control unit 15 records the presence/absence button in the corresponding “usage status” area of the transmission status management table 17. If it's a seat,
"available", and if absent, "unavailable" (step 710). Since the "unusable" handset is removed from the handsets to which calls are received in step 1002 of FIG. 10, by using this embodiment, it is possible to put a specific handset into a dormant state.

Next, a third embodiment will be explained.

FIG. 6 shows the data structure of the subaddress management table 18, in which different numbers are stored for each of the first image communication, second image communication, first wireless communication, and second wireless communication. In ISDN, one line can accommodate eight terminals, and when a calling terminal specifies one of the eight terminals on the called side, it sends number information called a subaddress unique to each terminal. In this embodiment, a subaddress is assigned to each communication means, and when the line control unit 9 receives subaddress information at the time of an incoming call, the system conflict control unit 15 refers to the subaddress management table 18 and assigns a subaddress to the communication means corresponding to the called subaddress. Connect with. For example, in FIG. 6, if the destination subaddress is 3, the first wireless transfer control unit 5 is used to cause the first handset 11 to ring. In this way, in the third embodiment, it is possible to specify and communicate with only one of the plurality of communication means, and it is possible to provide a simple dial-in service to the user.

Next, a fourth embodiment will be explained.

In step 808 of FIG. 8, the wireless transfer control unit, whose communication request is rejected by the system contention control unit 15 because there is no free channel, outputs a busy tone to the speaker unit of the handset to tell the user that there is no free channel. Can indicate no channel. However, if the state of no available channels continues, the user will not be able to connect to the line no matter how many times he or she makes calls from the handset, which increases the user's discomfort. Therefore, in this embodiment, step 808 in FIG. 8 is changed to the process in FIG. 12.

After rejecting the communication request (step 1201), the system contention control unit 15 refers to the channel state management table 16 and waits until a channel becomes available (step 1202). When the channel is free, instruct the wireless transfer control unit that rejected the communication request to ring the bell of the handset (
Step 1203), wait for a response from the slave device (Step 12
04). If the handset responds, it instructs the wireless transfer control unit to send out information indicating that it is now possible to make a call (for example, a voice announcement such as "Tsuwa dekimasu") (step 1205). In this way, in the fourth embodiment, for a user who cannot make a call because there are no free channels,
Later, when the channel becomes available, it is possible to notify the user via the handset that the call is possible, thereby increasing the user's work efficiency.

Next, a fifth embodiment will be explained.

[0064] In the first or fourth embodiment, the user cannot know whether there is an empty channel, that is, whether or not it is possible to make a call, unless he once requests a call from the handset. Therefore, in this embodiment, the handset is equipped with a lamp, a panel, etc. that displays information regarding whether or not a call can be made from the wireless transfer control unit.

FIG. 13 shows processing that replaces steps 804, 904, 1004, and 1102 in FIGS. 8 to 11.

The system contention control unit 15 instructs the communication switching control unit 2 to connect a route, updates the channel state management table 16 and the transmission state management table 17 (step 1301), and then updates the channel state management table 16 again. Check whether there is a free channel (step 130).
2). If there is, the wireless transfer control unit is caused to send out information regarding the ability to make a call (step 1303), and if not, information regarding the inability to make a call is sent out (step 1304).

Further, FIG. 14 shows processing that replaces steps 807, 907, 1007, and 1105 in FIGS. 8 to 11.

The system contention control unit 15 instructs the communication switching control unit 2 to disconnect the route, updates the channel state management table 16 and the transmission state management table 17 (step 1401), and then issues a call to the wireless transfer control unit. information regarding availability is sent out (step 1402). The handset flashes the lamp or displays the panel based on the information received from the wireless transfer control unit.

As described above, by using this embodiment, the user can easily know whether or not it is currently possible to make a call from the lamp or display panel of the handset.

[0070] Furthermore, since the G4FAX of the present invention has a communication function with a handset near the user, for example,
If a voice announcement is made to notify the user of the completion of document transmission/reception, no recording paper, paper jam, transmission redial failure, etc., the user can check the device status without having to visit the device installation location.

[0071] Here, even if, for example, a voice announcement such as "Bunshowojushinshimashita" is simply notified to the handset when the document reception is completed, multiple people can use the telematics terminal of the present invention. In such cases, the user who responded to the handset needs to visit the location where the handset is installed and confirm the recipient of the document.

The sixth embodiment will now be described. I
One of the features of SDN is caller notification service. This is to inform the user of the number of the calling terminal prior to the incoming call by including the number of the calling terminal in the procedure signal used for call control processing when receiving a call.

When a call arrives, the line control unit 9 notifies the system contention control unit 15 of the number of the calling terminal included in the call control procedure signal along with a communication request to receive a document. When the image transmission control unit has finished receiving the document, the system contention control unit 15 synthesizes the notified number of the calling side terminal into voice,
For example, the wireless transfer control unit is caused to send out a voice announcement such as "045-123-45XX Karabun Sho Wo Ju Shin Shimashita". As a result, the user who responded to the slave device can
Since the recipient of a document can be identified from the terminal number on the calling side of the voice announcement, there is no need to go and pick up a received document addressed to someone else.

[0074] As described above, voice announcements to the handset can be used in various ways, but it is unpleasant for the user to suddenly hear a voice announcement when he or she goes off-hook the handset thinking there is an incoming call. .

Accordingly, in the seventh embodiment, the wireless transfer control section generates bell sounds of different frequencies when a call arrives and when a voice announcement indicating the device status is sent. This allows the user to clearly know the content of the call to the handset when the bell of the handset rings.

Furthermore, in the above-described embodiment, the wireless transfer control section performs digital-to-analog conversion of audio data, but this conversion process may also be performed by a slave device. In this case, digital wireless communication is used between the handset and the telematics terminal of the present invention, and the terminal only needs to transfer the digital audio data input from the handset or the channel control unit as is, thereby reducing the cost of the terminal.

Furthermore, if the communication switching control unit 2 connects the terminal E of the first wireless transfer control unit 5 and the terminal F of the second wireless transfer control unit 6, the first slave unit 11 and the second slave unit 12 It is also possible to make internal calls between the two parties.

Further, the communication switching control unit 2 connects the terminal E of the first wireless transfer control unit 5 and the terminal F of the second wireless transfer control unit 6 to the terminal A or B of the channel control unit, so that the channel control unit By superimposing the audio data input from each wireless transfer control unit, a three-way call can be realized. Furthermore, if more wireless transfer control units are provided, audio conferencing for a large number of people can be realized by the same means.

[0079]

[Effects of the Invention] Since the present invention is equipped with a wireless transfer control means for communicating with a handset of a cordless telephone, the user can
The call function can be used without having to visit the location where the telematic terminal is installed, improving usability.

Furthermore, the present invention includes a plurality of wireless transfer control means that operate independently of the image transmission control means, and a system state management means for dynamically allocating communication channels to each communication means. As long as the image transmission control means is not using a communication channel, all available channels can be used for multiple calls, and the ISDN line can be used effectively. Furthermore, since the present invention manages document communication and phone calls all at once, no matter which S/T point or U point interface is used, the same effect as an eight-terminal bus connection can be achieved without in-house wiring work. is obtained.

Further, according to the present invention, by using a cordless telephone handset, it is possible to remotely monitor the terminal, such as notifying the device status by voice announcement.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a telematics terminal of the present invention.

FIG. 2 is a block diagram of a conventional telematics terminal.

FIG. 3 is an explanatory diagram of a system state management unit and a communication switching control unit.

FIG. 4 is an information explanatory diagram of a channel state management table.

FIG. 5 is an information explanatory diagram of a transmission status management table.

FIG. 6 is an information explanatory diagram of a subaddress management table according to the third embodiment.

FIG. 7 is an operation flowchart of the present invention.

FIG. 8 is a flowchart of call origination processing.

FIG. 9 is a flowchart of document transmission processing.

FIG. 10 is a flowchart of incoming call processing.

FIG. 11 is a flowchart of document reception processing.

FIG. 12 is an operation flowchart of the fourth embodiment.

FIG. 13 is a first operation flowchart of the fifth embodiment.

FIG. 14 is a second operation flowchart of the fifth embodiment.

[Explanation of symbols]

1...System state management unit, 2...Communication switching control unit, 3, 4
...Image transmission control unit, 5, 6...Wireless transfer control unit, 7, 8...
Channel control unit, 9... Line control unit, 10... ISDN, 1
DESCRIPTION OF SYMBOLS 1, 12...Slave unit, 15...System conflict control unit, 16...Channel state management table, 17...Transmission state management table, 18...Subaddress management table.

Claims (9)

[Claims] Claim 1: A telematics terminal comprising at least one image transmission control unit for performing image communication with a partner device, comprising at least one line control unit for performing call control processing of an integrated service digital network, and transmission for each channel. Channel control units of the same number as the number of channels that execute processing;
a plurality of wireless transfer control sections that operate independently of the image transmission control section and execute connection control and voice communication with the handset of the cordless telephone; A system state management unit that manages usage status and executes conflict control for generated communication requests, and a communication switching control unit that connects one of the image transmission control unit or the wireless transfer control unit and the channel control unit. A telematics terminal characterized by: 2. A telematics terminal having means for transmitting at least one image information, comprising means for accommodating at least one integrated service digital network line and means for voice communication with handsets of a plurality of cordless telephones. , A telematics terminal characterized in that all vacant channels not used by the image transmission means are assigned to each voice communication means for control. 3. A telematics terminal having means for transmitting at least one image information, comprising means for accommodating at least one integrated service digital network line and means for voice communication with handsets of a plurality of cordless telephones. , A telematics terminal characterized in that the total number of the image transmission means and the voice communication means is greater than or equal to the number of channels accommodated. 4. In claim 1, the wireless transfer control unit has a function of detecting whether or not the handset can receive a call, and the system state management unit detects whether the handset can receive a call while the handset is in a state where it cannot receive a call. A telematics terminal that does not control the connection of the wireless transfer control unit to a channel control unit. 5. In claim 1, the system status management unit includes a sub-address storage unit that manages a number uniquely representing each communication means, and the system state management unit includes a sub-address storage unit that manages a number uniquely representing each communication means, and the system state management unit includes a sub-address storage unit that manages a number uniquely representing each communication means, and the system state management unit includes a sub-address storage unit that manages a number uniquely representing each communication means, and the system state management unit includes a sub-address storage unit that manages a number uniquely representing each communication means, Telematics terminal to control connections as long as possible. 6. In claim 1, the system state management section suspends a handset call request when all channels are in use based on the channel usage status, waits for a free channel, and transmits call availability information to the handset. A telematics terminal that notifies you. 7. The telematics terminal according to claim 1, wherein the system status management unit notifies the handset of call availability information based on the channel usage status, regardless of whether or not there is a call request for the handset. 8. In claim 1, the system state management unit stores the number of the originating terminal obtained in call control processing, and upon completion of document reception, the system state management unit stores the number of the originating terminal obtained in call control processing, and upon completion of document reception, the system status management unit receives the document including speech synthesis information of the stored number. A telematics terminal that notifies information to handsets. 9. In claim 1, the wireless transfer control unit has a function of generating a bell tone of a different frequency, and generates the bell tone when an incoming call is received and when a voice announcement of the status of the telematics terminal, etc. is sent. A telematics terminal that switches and controls the bell sound.