JP2845368B2 - Communication terminal device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a communication medium having a plurality of data channels and one control channel, for example, communication terminals connected to each other via an ISDN line. .

[Prior Art] As a terminal device connected to a telephone network widely used at present, there is a telephone device mainly handling voice information. However, due to the recent development of communication technology, image information,
Facsimile devices as terminal devices capable of transmitting and receiving character information and personal computers equipped with a modem have also been widely used.

Among them, a terminal device or the like that can transmit and receive voice information and non-voice information by one device, such as a facsimile device with a telephone, has been put into practical use.

When there is a calling process from this type of terminal device connected to the telephone network to another terminal device, the telephone network selects a designated called (called) terminal device, and The called terminal transmits a called signal (paging signal) to the terminal device. Upon reception of the called signal, the called terminal device detects that the own device is calling, and executes a corresponding incoming call process.

[Problem to be Solved by the Invention] However, the called terminal device only receives a called (calling) signal, and as a result, only the called device from the partner device can be determined. Etc. could not be transmitted at all and could not be determined.

In other words, at this time, the called terminal device and the receiver could not distinguish who was actually receiving the received data or the like among the plurality of receivers using the called terminal device.

For this reason, there is a drawback in that it takes time and effort to perform an unnecessary job.

Therefore, a technique is known in which a number is transmitted from a transmitting side to a receiving side, and a ringing tone corresponding to the number transmitted from the transmitting side is displayed on the receiving side, and character information is displayed. However, in this case, there is a disadvantage that information corresponding to the number must be stored on the receiving side, and this correspondence must be decided between the transmitting side and the receiving side.

The present invention eliminates the above-mentioned drawbacks, and displays desired character information added to a called request by a calling side on a receiving side even if there is no arrangement of character information to be displayed in advance between a transmitting side and a receiving side. Yes, and can inform the receiving side whether the calling side wants voice communication or not. If the calling side does not want voice communication, disconnect the call even if the receiving side does not answer and process. It is an object of the present invention to provide a communication device that can be terminated.

[Means for Solving the Problems] The present invention has been made to achieve the above object.
It has the following configuration. That is, a communication device connected to a communication medium having a data channel and a control channel, a receiving unit that receives a control signal from the control channel, and an analyzing unit that analyzes control information received by the receiving unit. Ringing tone generating means for generating a different ringing tone depending on whether or not instruction information for instructing voice communication from the calling side is added to the calling request analyzed by the analyzing means; Display means for displaying character information added to the call request when the call request to which the information is added is detected by the analysis means, wherein the call request to which the instruction information for instructing voice communication is not added is provided. Is received, a call disconnection sequence is performed at a predetermined timing.

[Operation] With this configuration, when the communication device according to the present invention detects a call request to which desired character information has been added by the caller, the communication device displays the character information added to the call request, and furthermore, When a call request without the instruction information for instructing the update is received, a call disconnection sequence is performed at a predetermined timing.

Embodiment An embodiment according to the present invention will be described below in detail with reference to the drawings.

FIG. 2 is a block diagram showing the configuration of a digital telephone device according to one embodiment of the present invention.

This embodiment comprises a digital telephone device main body 30 and a handset 44 which is a telephone handset attached to the digital telephone device 30.

The digital telephone apparatus main body 30 is a central processing unit (control unit) that controls the entire apparatus of the present embodiment in accordance with, for example, the programs shown in FIGS. 6 (A) to 6 (C) and FIG. A certain CPU 32, a ROM 33 for storing parameters and the like used in the present embodiment in addition to the above-described programs, a CPU
RAM 34 that temporarily stores the processing progress of 32 and communication data, etc., and a line I / F unit 3 that controls the line interface with the connection line
5. It has a CODEC 36 for performing analog / digital conversion for a telephone call using I / O, an I / O unit 37 for controlling an operation unit attached to the apparatus, and operation units 39 to 43.

The line I / F unit 35 is a connection line, (bus line)
For example, in this embodiment, demultiplexing of information channels and control channels, clock synchronization, terminal contention control, and the like are performed in order to interface with the connection circuit 38 for the ISDN network.

The I / O unit 37 includes a numeric keypad 39 for inputting a telephone number and the like as an operation unit, a function key 40 for selecting various functions, a key set 41 for character input, and a key for receiving data and the like. A liquid crystal display 42, which is a display capable of displaying lacquer data, and a speaker 43 are connected, and perform input / output control with them.

FIG. 3 shows an external view of the digital telephone device of this embodiment including an operation unit.

3, the same components as those in FIG. 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the figure, 40a is a line selection button for selecting an arbitrary line out of a plurality of lines connected to the telephone device and connecting to its own device, and 40b is a transmission start instruction button for starting transmission of input data and the like. Reference numeral 40c denotes an interruption instruction button for instructing interruption of communication, 40d a message transfer key for instructing transfer of only messages, and 40e a voice communication function key for instructing to perform voice communication.

As shown, in addition to the basic character keys, the key set 41 of this embodiment has an insert key 41a, a delete key 41b, and a line feed key 41.
Also provided are control keys for editing, such as c, cursor movement keys 41d, etc., so that messages can be edited on the liquid crystal display 42 on which input results and the like are displayed.

FIG. 4 shows an example of a system configuration diagram of the connected communication system of the present embodiment having the above configuration.

FIG. 4 is a connection diagram in which the apparatus of this embodiment is connected to the ISDN network 25. In the figure, reference numeral 21 denotes a digital telephone device which is a terminal device of the present embodiment, 22 denotes a network terminating device which is a network termination, and 23 connects an ISDN switching network and a network terminating device 22. Subscriber line, 28 is a digital telephone device
A bus line connecting the network termination device 21 and the network termination device 22, 26 is another network termination device connected to the ISDN switching network, and 27 is another digital telephone device.

As is well known, the lines of the ISDN switching network are multiplexed,
It is composed of one control channel and a plurality of data channels.

FIG. 5 shows the frame structure of a call request command transmitted from the apparatus of this embodiment to the control channel (D channel) using the ISDN switching network 25 shown in FIG.

In FIG. 5, Da is the destination subscriber number section, Sa is the source subscriber number section, C is the control information section, Id is the information format identification section,
M is a message part.

The information format identification unit Id stores a code indicating the information format that the calling terminal device is currently transmitting,
The information format can be specified by the code.
Specifically, the first bit is voice / non-voice information, the second bit is an instruction for automatic / manual incoming call (automatic / manual response), and the third bit is an instruction such as presence / absence of a message. . In the message section M, a character string of a message input and edited by the key set 41 is stored.

The communication start control (connection control between terminal devices) of the present embodiment having the above configuration will be described below with reference to FIGS. 6 (A) to 6 (C) and FIG.

Hereinafter, an operation and a sequence when a calling operation is performed from the digital telephone device as the terminal device of the present embodiment will be described first with reference to FIGS. 6 (A) to 6 (C). Sixth
FIG. 5A shows “message transfer” by the message part M.
FIG. 6B shows the case where only "voice communication" is performed without performing the "message transfer" by the message section M, and FIG. 6C shows the "message transfer" and "message transfer" by the message section M. "Voice communication".

First, the case of "message transfer" alone will be described with reference to FIG.

In step S1, the caller (caller) who wants to call another communication terminal device confirms the display of the input information on the liquid crystal display 42 and the display of the processing result, etc.
Enter and edit the message you want to forward using. Next, in step S2, the message transfer function key 40d is pressed and input to instruct that only the message be transferred. In response to this, the CPU 32 instructs the line I / F unit 35 to prepare for signal transmission to the line, and waits for input of the next control information. In the subsequent step S3, the callee (destination) subscriber number is input using the numeric keypad 39, and then the transmission start instruction button 40b is pressed in step S4.

At this time, as shown in step S5, the CPU 32 generates a call request command having a frame structure shown in FIG. 4 and transmitted at the time of the response from the other party based on the information obtained from each of the above sequences. In this case, since only the message is transferred, the first bit is “1” (non-voice information), the second bit is “1” (automatic call instruction), and the third bit is in the information format identification unit Id. Indicates an instruction such as “1” (with message). Then, the generated call request command is transmitted to the control channel (D channel) of the ISDN bus line 38 via the communication I / F unit 35.

Next, a sequence in the case of only voice communication is shown in FIG. 6 (B).
This will be described with reference to FIG.

Since the caller does not need to input a message when performing only voice communication, the handset 44 is raised in step S11 or the voice communication function key 40 is set.
Press e and input that it is voice communication. In response to this, the CPU 32 instructs the line I / F unit 35 to prepare for signal transmission to the line, and waits for input of the next control information. In the following step S12, the calling party (destination) subscriber number is input using the numeric keypad 39 in the same manner as in step S3.
In step 3, the transmission start instruction button 40b is pressed.

At this time, as shown in step S14, the CPU 32 generates a call request command having the frame structure shown in FIG. 4 and transmitted at the time of the response from the other party based on the information obtained from each of the above sequences. In this case, since only voice communication is performed, the first bit is "0" (voice information) in the information format identification unit Id,
The second bit is an instruction such as "0" (manual incoming call instruction), and the third bit is an instruction such as "0" (no message). Then, the generated call request command is transmitted to the control channel (D channel) of the ISDN bus line 38 via the communication I / F unit 35.

This completes the calling process, and then performs voice communication with the other party.

Further, a sequence in which both message transfer and voice communication are performed will be described with reference to FIG. 6 (C).

In step S21, the sender inputs and edits a message to be transferred on the liquid crystal display 42 using the key set 41 in the same manner as in step S1. Next, in step S22, the user raises the handset 44 or presses the voice communication function key 40e to input a voice communication. In response to this, the CPU 32 instructs the line I / F unit 35 to prepare for signal transmission to the line, and waits for input of the next control information. In the subsequent step S23, the callee (destination) subscriber number is input using the numeric keypad 39 as in step S3, and the transmission start instruction button 40b is pressed in step S24.

At this time, as shown in step S25, the CPU 32 generates a call request command having a frame structure shown in FIG. 4 to be transmitted at the time of the response from the other party based on the information obtained from each of the above sequences. In this case, in order to perform message transfer and voice communication, the first bit is "0" (voice information), the second bit is "0" (manual call instruction), and the The third bit is an instruction such as "1" (with message). Then, the generated call request command is transmitted to the control channel (D channel) of the ISDN bus line 38 via the communication I / F unit 35.

Thus, the calling process is completed, the message is transferred to the destination device by the message unit M, and the voice communication with the destination is performed at the same time.

Finally, the control of the called device will be described with reference to the flowchart of FIG. 7 showing the communication path formation control of the called device which is the partner device called in each of the above sequences.

The control of the called side (called side) device is started by receiving a call request command via the control channel (D channel) of the connection circuit 38 from the calling side device shown in step S71. You. As shown in FIGS. 6 (A) to 6 (C), the information format identification unit (Id) of the call request command includes the message transfer only, the voice communication only, and the message transfer and voice communication. Information formats for a total of three cases where both are performed are specified. Therefore, the information format identification section (Id) received in the following step S72 is read.

First, in step S73, the first bit and the second bit
Examine the bit and check for voice information / non-voice information and manual incoming call /
An automatic incoming call instruction is determined. In the present embodiment, a manual incoming call instruction is specified for voice information, and an automatic incoming call instruction is specified for non-voice information.

If the result of determination in step S73 is non-voice information, it means that only message transfer has been performed, so that step S74
Then, the message part (M) of the call request command is read, and the content is displayed on the liquid crystal display 42. Next, in step S75, the speaker 43 is driven to generate a ringing tone in order to notify that a call has been made and a non-voice information transfer request has occurred. This ringing tone is easily distinguished from a direct call of voice information, which will be described later, by a continuation cycle or a distant output frequency. In this case, since the automatic call receiving process is performed, it is checked in step S76 whether a predetermined time has elapsed.
If the predetermined time has not elapsed, the flow returns to step S75 to continue outputting the ringing tone. If the predetermined time has elapsed, the flow advances to step S77 to automatically stop the ringing tone. Thereafter, in step S78, a call disconnection sequence is started, and a series of processing ends when the disconnection sequence ends.

By the above sequence, the receiver can hear the ringing tone, recognize that the called of the message transfer request has occurred, and read the message displayed on the liquid crystal display 42.

On the other hand, if it is determined in step S73 that the voice information is a voice communication request, the process proceeds to step S80. And
When voice communication is performed, message transfer may be selected at the same time.
The bit eyes are examined to determine whether the message is present or not. When it is determined that there is no message, the process proceeds to step S82, and when it is determined that there is a message, the process proceeds to step S81. Step S
At 81, the contents of the message part (M) are displayed on the liquid crystal display 42.
And proceed to step S82.

In step S82, a ringing tone is output from the speaker 43 to notify that a called voice communication request has been received. This ringing tone is non-voice information without the above-mentioned voice communication request due to frequency, intermittent period, etc. It is easily distinguished from the ringing tone. In this case, it is necessary to make a manual call (manual answer), and in a subsequent step S83, it waits for the receiver who has heard the ringing tone to off-hook (lift) the handset 44. Therefore, the output of the ringing tone continues until the receiver turns off the handset 44. The receiver can recognize from the ringing tone that the voice communication request has been called.

At this time, if a message transfer request is made and a message is added, the transfer message is displayed on the liquid crystal display 42. Therefore, the receiver can read the message from the calling side when responding by off-hook of the handset 44. Step S8 if the receiver lifts the handset 44 and off-hook
The process proceeds from step 3 to step S84, and the output of the ringing tone from the speaker 43 is stopped. Thereafter, in step S85, voice communication is started using the data channel (B channel). In addition,
Clearing the transfer message displayed on the LCD display 42 is due to the end of the voice communication and the handset
The control may be performed such that the data is erased immediately when the handset 44 is turned off, or when the handset 44 is turned off.

As described above, according to the present embodiment, even for the purpose of voice communication, it is possible to add a message on the calling side and transfer it to the called side.

For this reason, the sender can store and transmit the name of the communication partner who actually desires communication among a plurality of receivers using the calling terminal device as a message in the call request command. Accordingly, the contents of the message are displayed on the liquid crystal display 42 of the receiving side which has received the call request command, and the person whose name or the like is displayed among a plurality of users picks up the handset 44 and responds. I can do this.

With the above control, there is an advantage in that the troublesome work of routing can be omitted.

[Other Embodiments] According to the present invention, the data format stored in the message part of the call request command is not subject to any restrictions, and the input / code is input to each of the calling terminal device and the called terminal device. And decoding / outputting is possible.

In the above-described embodiment, the data is a character string. However, the present invention is not limited to this.
A mode in which the melody code used in MIDI is used to reproduce and output from the speaker 43 of the called terminal device can be applied, and various modifications are possible.

According to the present embodiment as described above, according to the present embodiment, a calling process is performed by adding message information to a call request command sent from a calling terminal device to a called device. This message information can be read and displayed during the incoming call response operation of the device. Therefore, for example, the called side (called side)
Even when there are a large number of respondents, the person who actually wants to communicate can be designated, and unnecessary agency processing becomes unnecessary, and a reliable and prompt response is possible.

In addition, various additional information can be transferred, and the effect is very large.

[Effects of the Invention] As described above, according to the present invention, even if there is no agreement between the transmitting side and the receiving side for the character information to be displayed in advance, the desired character information added to the called request by the calling side can be received by the receiving side Can be displayed, and the receiving side can be informed whether the calling side desires voice communication or not. If the calling side does not want voice communication, the call is disconnected even if the receiving side does not answer. The process can be terminated.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic functional block diagram according to the present invention, FIG. 2 is a block diagram of an embodiment according to the present invention, and FIG. 3 is an external view of the present embodiment shown in FIG. FIG. 4, FIG. 4 is a system configuration diagram of an ISDN network to which the apparatus of this embodiment is connected, FIG. 5 is a frame configuration diagram of a call request command used in the system of this embodiment, and FIGS. C) is a flow chart showing a calling process of the calling side apparatus of the present embodiment, FIG. 6 (A) is a flow chart for message transfer only, and FIG. 6 (B) is a voice communication only. Flow chart showing the calling process of
FIG. 6 (C) is a flowchart showing a calling process for performing message transfer and voice communication, and FIG. 7 is a flowchart showing a call receiving process of the called device of the present embodiment. In the figure, 21, 27 ... digital telephone device, 22, 26 ... network terminating device, 23 ... subscriber line, 25 ... ISDN switching network, 30 ... digital telephone device body, 32 ... CPU, 33 ... … ROM, 34 …… RA
M, 35… Line I / F unit, 36… CODEC, 37… I / O unit, 38… Connection circuit to the ISDN network, 39… Numeric keypad, 40… Function key, 40a… Line selection button, 40b ... Transmission start instruction button, 40c ... Interruption instruction button, 40d ... Message transfer key, 40e ... Voice communication function key, 41 ... Key set, 41a ... Insert key, 41b ... Delete Key, 41c ... line feed key, 41d ... cursor movement key, 42 ... liquid crystal display, 43 ... speaker, 44 ... handset, Da ... destination subscriber number part, Sa
... Source subscriber number part, C... Control information part, Id... Information format identification part, M.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04M 11/00 H04M 3/42 H04Q 5/00

Claims (1)

(57) [Claims] 1. A communication device connected to a communication medium having a data channel and a control channel, comprising: a receiving unit for receiving a control signal from the control channel; and analyzing control information received by the receiving unit. Analyzing means; ringing sound generating means for generating a different ringing sound depending on whether or not instruction information for instructing voice communication from the calling side is added to the calling request analyzed by the analyzing means; Display means for displaying the character information added to the call request when the call request to which the desired character information is added is detected by the analysis means, and instruction information for instructing voice communication is not added. A communication device for performing a call disconnection sequence at a predetermined timing when a call request is received.