JPH0366869B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for simultaneously using multiple communication channels in a digital integrated communication network, which enables composite communication by using multiple sets of communication channels at once.

In a digital integrated communication network, multiple communication channels are set up on a subscriber line, making it possible to carry out multiple communications in parallel.

In such a digital integrated communication network, for example, multiple communication paths are set up between complex terminal devices that can transmit and receive audio, video, data, etc. in parallel.
A service that uses two communication channels at once (hereinafter referred to as composite communication) that communicates images, data, etc. at the same time becomes possible. In a digital integrated communication network in which a plurality of these communication channels are set up by a plurality of independent calls, consideration must be given to setting the plurality of communication channels so as not to cause any inconvenience to the plurality of communications.

[Conventional technology]

FIG. 5 is a diagram illustrating an example of a conventional two-channel simultaneous usage method, and FIG. 6 is a diagram illustrating an example of the signal transmission/reception process in FIG. 5.

In FIG. 5, subscriber lines 2 and 3 accommodated in the digital integrated communication network 1 allow two sets of communication paths to be set. Furthermore, the terminal device 4 connected to the subscriber line 2 and the terminal devices 5 and 6 connected to the subscriber line 3 can perform composite communication using audio and video by collectively using two sets of communication channels. The terminal device 7 is equipped with a composite communication unit (F0) 10 as a terminal equipment, and the terminal device 7 is not equipped with the composite communication unit 10 as it is a terminal device capable of communicating only by voice. Further, it is assumed that the digital integrated communication network 1 sets only one communication path for each call.

In the digital integrated communication network 1, when the terminal device 4 performs composite communication with the terminal device 5 or 6, it is first necessary to set up two sets of communication paths between the terminal device 5 and the terminal device 5 or 6. However, since the digital integrated communication network 1 sets only one set of communication paths for each call, the terminal device 4 issues two sets of calls in sequence.

In FIGS. 5 and 6, the terminal device 4 first sends an audio incoming call request (SET UP) signal [hereinafter (V) as an audio signal and (I) as a video signal in order to set up an audio communication path. , and the same applies hereinafter] is sent to the digital integrated communication network 1. The digital integrated communication network 1 transmits a voice SET UP (V) signal to the terminal devices 5 to 7 via the subscriber line 3. Since the terminal devices 5 to 7 are all capable of voice communication, they each send back a voice calling [ALERTING (V)] signal to display an incoming call to the called party.

Next, the terminal device 4 sends a video SET UP (I) signal to the digital integrated communication network 1 in order to set up a video communication channel. A digital integrated communication network 1 provides video communication to terminal devices 5 to 7 via a subscriber line 3.
Transmits the SET UP (I) signal. Since terminal devices 5 and 6 are also capable of video communication,
An ALERTING (I) signal is sent back, but since video communication is not possible with the terminal device 7, a video release completion [RELEASE COMP LETE (I)] signal is sent back.

When the called party of the terminal device 7 responds to the incoming call using the voice SET UP (V) signal, the terminal device 7 sends a voice response [CONNECT] to the digital integrated communication network 1.
(V)] Send a signal. Digital integrated communication network 1
returns a voice response confirmation [CONNECT ACKNOWLEDGE (V)] signal to the terminal device 7, and also sends a voice CONNHCT (V) signal to the terminal device 4.
A signal is transmitted to establish an audio communication path between the terminal device 4 and the terminal device 7. As a result, it becomes impossible to set up a voice communication path with the terminal device 5 or 6, and composite communication becomes impossible.

Note that even if the terminal device 7 does not respond, if the called party of the terminal device 5 responds to the incoming call using the voice SET UP (V) signal, the terminal device 5 will respond to the voice SET UP (V) signal.
CONNECT (V) signal to digital integrated communication network 1
furthermore, the called party of the terminal device 6
When the terminal device 6 responds to the incoming call using the SET UP (I) signal, the terminal device 6 transmits the video CONNECT (I) signal to the digital integrated communication network 1, and the digital integrated communication network 1 sends the audio CONNECT signal to the terminal device 5.
The ACKNOWLEDGE (V) signal is sent back to the terminal device 6, the video CONNECT ACKNOWLEDGE (I) signal is sent back to the terminal device 4, and the audio CONNECT signal is sent back to the terminal device 4.
(V) signal and video CONNECT (I) signal are transmitted, an audio communication path is established between terminal devices 4 and 5, and a video communication path is established between terminal devices 4 and 6. As a result, composite communication becomes impossible.

Further, another terminal device 9 connected to the digital integrated communication network 1 via the subscriber line 8 and equipped with a composite communication section 10 also requests composite communication to the terminal devices 5 and 6 at the same time as the terminal device 4. In this case, for example, if the called party of the terminal device 5 is going to respond to a composite communication, the SET UP (V) signal for audio and the SET UP (V) signal for video
Even in response to the SET UP (I) signal, there is a possibility that an audio communication path will be set up with the terminal device 4 and a video communication path will be set up with the terminal device 9.

[Problems to be Solved by the Invention] As is clear from the above explanation, in the conventional two communication channel simultaneous use method, the terminal device 4 or 9 desiring composite communication tries to set up two sets of communication channels. Also, one communication path is set to the terminal device 7 that is not capable of multiplex communication, or one communication path is set to each of the different receiving terminal devices 5 and 6, and furthermore, the same incoming call is received from a plurality of calling terminal devices 4 and 9. Inconveniences such as one communication channel being set for each terminal device 5 or 6 occurred, and there was a fear that the setting with the desired receiving terminal device 5 or 6 could not be established.

[Means for solving problems]

The present invention solves the above problems by taking the following measures.

That is, in the first invention, there is provided an identifier adding means for adding an identifier of a call for composite communication to a transmitted signal, an identification means for identifying a call for composite communication from a received signal, and a means for identifying a call for composite communication from a received signal. At this time, the terminal device is provided with an incoming call display means for displaying an incoming call to the called party after receiving all the incoming call request signals for the composite communication.

Further, in the second invention, when the called party responds to the identified composite communication call, the identifier adding means and the identifying means transmit a response signal regarding one of the communication channels; The terminal device is provided with a response means for transmitting a response signal regarding the remaining communication channel after receiving a response confirmation signal for the remaining communication channel from the digital integrated communication network.

Furthermore, in each of the first and second inventions, the identifier adding means adds an identifier of the originating terminal device to the transmission signal in preparation for a case where a plurality of terminal devices request the same terminal device for composite communication; Further, the identification means includes means for identifying the originating terminal device from the originating terminal device identifier added to the received signal.

[Effect]

That is, according to the present invention, a plurality of calls issued from a terminal device requesting compound communication are assigned a compound communication identifier, thereby preventing a terminal device incapable of compound communication from responding. In addition, the terminal device that has identified the identifier for composite communication from the received signal displays the incoming call to the called party after receiving multiple incoming call request signals for composite communication, and also displays the incoming call to the called party when the called party responds. After one communication path is set up by sending and receiving a response signal and response confirmation signal for a call, multiple communication paths for composite communication are set up for different receiving terminal devices in order to set up a communication path for the remaining call. This will be prevented. Furthermore, even if multiple transmitting terminal devices simultaneously request composite communication to the same receiving terminal device, a communication path for composite communication can be established between different transmitting terminal devices by adding the identifier of the transmitting terminal device. This will be prevented.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a method for simultaneously using multiple communication channels according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of the signal format in FIG. 1, and FIGS. FIG. 2 is a diagram showing an example of a signal transmission/reception process in FIG. 1; Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 1, the originating terminal devices 4 and 9 capable of compound communication are provided with an identifier adding section (F1) 11 as an identifier adding means, and the receiving terminal devices 5 to 7 are each provided with a compound call identification unit (F1) 11 as an identifying means. The receiving terminal devices 5 and 6 which are capable of composite communication are further provided with a composite incoming call display part (F13) 13 as an incoming call display means and a response part (F14) 14 as a response means. ing.

The identifier addition unit 11 adds a composite communication identifier to the SETUP signal for composite communication in addition to the protocol identifier, calling terminal number, receiving terminal number, and audio/video identifier, as shown in FIG.

In FIGS. 1 to 3, the terminal device 4 that wishes to perform composite communication with the terminal device 5 or 6 first uses the identifier adding unit 1 to set up an audio communication path.
For audio with a composite communication identifier added by 1
SET UP (V) signal [Signal with composite communication identifier is displayed by (V-C) and (I-C),
The same applies hereinafter] is sent to the digital integrated communication network 1. The digital integrated communication network 1 sends voice SET UP (V-
C) transmit signals. The terminal devices 5 to 7 identify the composite communication identifier from the received audio SET UP (V-C) signal by the composite call identification unit 12, and the terminal devices 5 and 6 capable of composite communication each identify the composite communication identifier from the voice SET UP (V-C) signal.
Although the ALERTING (V-C) signal is returned, the composite call display section 13 is still displaying the video SET for composite communication.
It identifies that it has not received the UP (I-C) signal, and does not yet display an incoming call to the called party. On the other hand, since the terminal device 7 is unable to perform composite communication, it returns a voice RELEASE COMPLETE (V-C) signal indicating non-conformity.

As a result of the above, the terminal device 7 is unable to perform composite communication.
The reception of the voice SET UP (V-C) signal for composite communication prevents the incoming call from being displayed.

Next, the terminal device 4 sends a video SET UP (I-C) signal to which a composite communication identifier has been added by the identifier adding section 11 to the digital integrated communication network 1 in order to set up a video communication channel. A digital integrated communication network 1 connects terminal devices 5 to 7 via a subscriber line 3.
The video SET UP (I-C) signal is transmitted to. This time, terminal devices 5 and 6 are for video respectively.
Along with sending back the ALERTING (I-C) signal,
Composite communication display section 13 is set up for audio (V-C)
It identifies that a signal and video SET UP (I-C) signal has been received, and indicates an incoming call to the called party. Note that the composite incoming call display section 13 is a SET for audio.
If the video SET UP (I-C) signal is not received within a predetermined time after receiving the UP (V-C) signal, the audio RELEASE COMPLETL (V-
C) The signal is returned to the digital integrated communication network 1 to release the composite communication using the voice SET UP (VC) signal.

On the other hand, terminal device 7 is used for video as before.
Returns RELEASE COMPLETL (I-C) signal.

When the called parties of the terminal devices 5 and 6 respond to the incoming call, the response units 14 of the terminal devices 5 and 6 first send out a voice CONNECT (V-C) signal to the digital integrated communication network 1. The digital integrated communication network 1 selects the terminal device 5 as the receiving terminal device, and sends a voice CONNECT ACKNOWLEDGE to the terminal device 5.
(V-C) signal is returned, an audio RELEASE (V-C) signal indicating non-selection is sent back to the terminal device 6, and an audio CONNECT (V-C) signal regarding the terminal device 5 is sent back to the terminal device 4. C) Transmit signals and set up a voice communication path between the terminal devices 4 and 5.

CONNEECT ACKNOWLEDGE for audio (V-
C) The response unit 14 of the terminal device 5 that received the signal,
Next, the video CONNECT (I-C) signal is sent to the digital integrated communication network 1, but the audio
Terminal device 6 that received the RELEASE (V-C) signal
The response unit 14 of the video CONNECT ((I-C)
No signal is sent. For video from terminal device 5
The digital integrated communication network 1 that received the CONNECT (I-C) signal transmits the video signal to the terminal device 5.
A CONNECT ACKNOWLEDGE (I-C) signal is returned, and a video CONNECT (I-C) signal related to the terminal device 5 is transmitted to the terminal device 4 to set up a video communication path between the terminal devices 4 and 5. .

As described above, both the audio communication path and the video communication path are set between the terminal devices 4 and 5, making composite communication possible. For example, the audio communication path is set between the terminal devices 4 and 5. Also, video communication paths are prevented from being set up between the terminal devices 4 and 6, respectively.

Next, the signal transmission and reception process when the terminal devices 4 and 9 simultaneously request the same terminal device 5 or 6 for composite communication will be explained with reference to FIG. Furthermore, the fourth
In the figure, the terminal device 7 that is not capable of composite communication is omitted.

In FIGS. 1, 2, and 4, a terminal device 4 desiring composite communication to a terminal device 5 or 6 and a voice SET UP (V-C) signal [hereinafter identifying the originating terminal device 4 or 5] are shown. In order to do (4-V-
C) or (9-V-C), hereinafter the same] is sent to the digital integrated communication network 1. The digital integrated communication network 1 sends audio SET UP (4-V-) to the terminal devices 5 and 6 via the subscriber line 3.
C) A signal is transmitted, and the terminal devices 5 and 6 each return an audio ALERTING (4-V-C) signal.

In parallel with this, the terminal device 9 that wishes to perform composite communication with the terminal device 5 or 6 also uses the voice SET
UP (9-V-C) signal to digital integrated communication network 1
, the digital integrated communication network 1 transmits the audio SET UP (9-V-C) signal to the terminal devices 5 and 6. The composite call identification units 12 of the terminal devices 5 and 6 receive the received voice SET UP (9-V-
C) The signal transmitting terminal device 9 is already for voice
It identifies that the ALERTING (4-V-C) signal is different from the sending terminal device 4 of the audio SET UP (4-V-C) signal that has already been returned, and sends the audio RELEASSE COMPLETL (9-V -C)
The signal is sent back to the digital integrated communication network 1. Next, the video SET UP (9-I
-C) Similarly, for signals, the terminal devices 5 and 6 use the video RELEASE indicating that communication is in progress.
Returns COMPLETE (9-I-C) signal.

As described above, from terminal device 9 to terminal installation 5 and 6
Composite communication for is not realized.

SET for video that will be sent from the terminal device 4 thereafter
In response to the UP (4-I-C) signal, terminal devices 5 and 6 each output video ALERTING (4-I-C).
When the called parties at terminals 5 and 6 answer, the terminal 5 returns the signal as in FIG.
and 6 sends a voice CONNECT (4-V-C) signal to the digital integrated communication network 1, and the digital integrated communication network 1 selects the terminal device 5 as the receiving terminal device and sends the voice CONNECT signal to the terminal device 5.
Returns the ACKNOWLEDGE (4-V-C) signal,
Audio RELEASE indicating non-selection for terminal device 6
(4-V-C) signal is sent back, and the audio CONNECT (4-V-
C) Terminal device 4 transmits signals and establishes a voice communication path.
and 5, and then a video communication path is also set between the terminal devices 4 and 5.

As is clear from the above description, according to this embodiment, the identifier adding section 11 of the terminal device 4 is
A composite communication identifier is added to the SET UP (4-V-C) signal, and the composite call identification unit 12 of the terminal devices 5 to 7 detects the composite communication identifier. It is possible to prevent one of the communication channels from being set in the terminal device 5 and 6, and the composite call display units 13 of the terminal devices 5 and 6 control the timing of the call reception method for the called party, and the response unit 14 controls the timing of the call reception method for the called party.
By controlling the sending timing of the CONNECT (I-C) signal, an audio communication channel and a video communication channel are set to different receiving terminal devices 5 and 6 in response to a composite communication request from the terminal device 4. This can be prevented. Furthermore, even if a plurality of terminal devices 4 and 9 simultaneously request composite communication to the same terminal device 5 or 6, by monitoring the identifier of the calling terminal device, it is possible to send calls using different audio communication channels and video communication channels. This can be prevented from being set on the terminal devices 4 and 9.

Note that FIGS. 1 to 4 are only one embodiment of the present invention; for example, the identifier adding section 11 is provided only in the calling terminal devices 4 and 9, and the compound call identifying section 12 and the compound call receiving display section are provided. 13 and response unit 14
is not limited to being provided only in the receiving terminal devices 5 and 6, and may be provided in all terminal devices 4 capable of multiple communication, but the effects of the present invention do not change even in such a case. . Further, the signal transmission/reception process is not limited to that shown in the drawings, and many other modifications may be considered, but the effects of the present invention remain the same in any case. Further, the number of communication channels for composite communication is not limited to two sets, and other composite communication channels may also be considered, but the effects of the present invention do not change in either case.

〔Effect of the invention〕

As described above, according to the present invention, in the digital integrated communication network, a call issued from a terminal device requesting composite communication can be prevented from having a communication path set to a terminal device that is not capable of composite communication, In addition, for terminal devices capable of compound communication, it is possible to prevent multiple communication paths for compound communication from being set to different receiving terminal devices, and furthermore, it is possible to prevent multiple communication paths for compound communication from being set to the same receiving terminal device. It is also possible to prevent the communication terminal from being set to a different originating terminal device, and it is possible to perform composite communication without providing any function for composite communication in the digital integrated communication network.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a system for simultaneously using two communication channels according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of the signal format in FIG. 1, and FIGS.
A diagram illustrating an example of the signal transmission and reception process in Figure 5.
The figure shows an example of a conventional two-communication-channel simultaneous usage method, and FIG. 6 is a diagram showing an example of the signal transmission and reception process in FIG. 5. In the figure, 1 is a digital integrated communication network, 2,
3 and 8 are subscriber lines, 4 to 7 and 9 are terminal devices, 10 is a composite communication unit (F0), 11 is an identifier addition unit (F1), 12 is a composite call identification unit (F2), and 13 is a composite incoming call display section (F3), and 14 indicates a response section (F4).

Claims (1)

[Scope of Claims] 1. In a digital integrated communication network in which a plurality of communication channels can be set in a subscriber line, an identifier adding means for adding an identifier of a call that uses the plurality of communication channels at once to a transmitted signal, and the plurality of communication channels an identification means for identifying a call that uses multiple communication channels all at once from a received signal; 1. A method for collectively utilizing multiple communication channels, characterized in that a terminal device accommodated in the digital integrated communication network is provided with an incoming call display means for displaying an incoming call to a person. 2. In a digital integrated communication network in which multiple communication channels can be set up on a subscriber line, an identifier adding means for adding an identifier for a call that uses multiple communication channels at once to a transmitted signal, and an identification means for identifying from a received signal; and when a called party responds to a call that collectively uses the plurality of communication channels identified by the identification means, transmitting a response signal regarding one of the communication channels, and confirming a response to the response signal; A system for simultaneously using multiple communication channels, characterized in that a terminal device accommodated in the digital integrated communication network is provided with a response means for transmitting a response signal regarding the remaining communication channels after receiving a signal from the digital integrated communication network. 3. The identifier adding means adds an identifier of the originating terminal device to the transmitted signal, and the identifying means identifies the originating terminal device from the originating terminal device identifier added to the received signal. A method for using multiple communication channels at once as described in Scope 1. 4. The identifier adding means adds an identifier of the originating terminal device to the transmitted signal, and the identifying means identifies the originating terminal device from the originating terminal device identifier added to the received signal. A method for using multiple communication channels at once as described in Scope 2.