JPH02264543A - Isdn terminal equipment and isdn terminal system - Google Patents

Abstract

PURPOSE:To attain the information of the presence of a terminal equipment in standby to a busy terminal equipment by providing a function informing a bus busy state to other busy terminal equipment connecting to a bus to which an ISDN terminal equipment is connected. CONSTITUTION:In the case of a call coming from an external line, a communication information signal from an opposite terminal, that is, a caller side is given to a telephone function section 12 via a line control section CCU 11 via an ISDN network. Moreover, in the case of a call from its own terminal equipment, a voice information signal converted by a transmitter-receiver in the function section 12 through the CCU 11 is sent to a line 20 and an ISDN network. In addition, the terminal equipment 1 is provided with a function in which a caller informs a bus busy state to a busy terminal equipment as one ISDN terminal equipment among plural terminal equipments connecting to same bus. Moreover, when the terminal equipment 1 is busy conversely and the terminal equipment is an object of such notice, a display section 13 is provided, which informs the presence of a standby terminal equipment to the user of the terminal equipment 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application 'J'F) The present invention relates to ISDN terminals and ISDN terminal systems, and is particularly applicable to the case where 1M number of terminals are connected on the same bus. )N terminal and ISDN terminal system.

(Prior Art) 131)N (Integrated Digital Service Network) as a digital line network is expected to provide various information and communication services based on various media such as voice, images, and data.

Such a service integration network has a plurality of subscriber lines
81) N terminals (typical examples of ISDN terminals include telephones, G4 facsimiles, etc.) can be connected and used, and the user can avoid operating two or more of these terminals at any given time.

In other words, in ISDN, L to R1 wiring (bus wiring) is specified as one of the wiring forms in the basic interface, and from that [5l)N basic interface (2 13 channels (information channels) + 1 1] channel up to 8 lines per line
Two devices can be connected and two of them can be used at the same time.

(The problem that the invention is trying to solve) However,
In the conventional ISDN terminal connected to +31)N above,
If multiple devices are connected on the same bus,
When the bus is busy, that is, when two terminals in the fsDN terminal system are using channels 131 and 82, that is, communicating, three terminals communicate using the B channel. In this case, you must wait until one of the terminals that is communicating ends the communication.

When looking at the content of the communication, it is diverse,
There are cases where it is highly necessary to continue communication at the current point of 1.7, and there are cases where it is not necessary (for example, if there is another terminal with which you would like to communicate from now on, you may refuse to use that channel. Some people may think that, and if we take the example of a telephone call, there are cases where the callers have finished their business and are now chatting. However, it is always possible to respond only passively, i.e., as mentioned above, it may be necessary to wait for 3 days for one of the terminals currently communicating to complete the communication. , which is inconvenient.

Previously, there was no way to notify others that they wanted to use the channel;
The terminal performing B, that is, the communicating terminal, cannot recognize that another terminal is on standby.

As mentioned above, ISDN is capable of using two 13 channels at the same time, and from the point of view of effective use and utilization of lines, there is room for improvement in this situation.

In particular, in view of the following cases, countermeasures are even more important.

In other words, as mentioned above, in an ISDN terminal where multiple terminals are connected to the same bus, if two terminals are communicating using two F3 channels, three terminals 1-1 will communicate. However, even if communication by the three terminals 1] is particularly necessary and should be prioritized over tracing, it is necessary to wait for the communicating terminal a (Fl) to end, and such In some cases, the problem becomes even bigger, and the feature of being able to use two devices with ISDN is
I'm not getting any use out of it.

Above all, it is necessary to give top priority to extremely urgent cases such as reporting to the police, fire department, etc., but even in such cases, it is necessary to wait until the end of the communication. Must be.

The object of the present invention is to provide an improved [Sl)NlX1J end and IS
The purpose is to provide one pair of DN terminal system.

(Means and effects for solving the problems) The present invention
5I) N'X! ISDN terminal connected to ISL)N' By providing a function on the bus to which the J terminal is connected to notify the terminals currently communicating, it is now possible to notify the terminals currently communicating that there is a terminal waiting. It is something.

In addition, the fsI)N terminal system of the present invention is an 13I)N terminal system in which a plurality of ISDN terminals are connected to a Nov bus, and by giving priority to communication with a high priority, However, it is designed to allow emergency communications.

(Example) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a communication device (1r) according to an embodiment of the present invention.

In the figure, reference numeral 1 indicates the main body (hereinafter also simply referred to as a terminal) of the ISDN communication device 17t, which is connected to the main controller r41.
1100, the main control unit 1. OOha, CI) LJ
The main control unit 100 stores the entire terminal device in ROM. It is controlled by CPUl0I based on the program stored in IO2.

”2 (, r) UIOI, ROM I O2 and RA
A line control unit (CCU) lI for terminal l to communicate is connected to a main control unit lOO consisting of M2O3, and a line control unit 11 is connected to one line 20 of the bus. The functional unit indicated by the reference symbol 12 in the figure is a part that realizes a function specific to the wooden terminal l, and is, for example, a
If the device has ISDN telephone functionality, at least 71
Episode 1 [Includes functional parts.

1: Now, this will be explained as a telephone function section.

The telephone function rtll l 2 has a handset, a key device including a numeric keypad, and the necessary means of operation.

The communication 1a is performed through the line control section 11.71 and the communication function section 12 under the control of the main control section 100.

That is, when a call is received from an outside line, the communication information signal from the other party's terminal, that is, the calling party, is sent to itI! 1η function section 12, and when making a call from the own terminal, the voice information signal converted by the handset circuit in the telephone function section 12 is sent to the line 20, ISD, through the line control section 1■.
It will be sent to the N network.

In addition, as an ISDN terminal in which multiple terminals are connected to the same bus, the wooden terminal has a function for the calling party to notify the terminal in communication when the bus is busy (A11 Furthermore, conversely, when the terminal 1 is in communication and becomes the target of such a notification, the display unit 13 is used to notify the user of the terminal I that there is a waiting terminal. is thrown.

01j The main control unit 100 has a program storage unit ROMIO2 pre-stored with a control program related to call origination and call reception, for example, an example of which is shown in flowchart 1 in FIG. ) When making a call, tJlol controls to perform conversion to the own address when the bus is busy, depending on the information as to whether the bus is busy or not. Regarding the operation when arriving at 11f, if the terminal is communicating when ↑T l"F is from its own address, the display section 13 will be displayed as follows. Control.

By making two consecutive calls to its own address, a terminal on standby can notify communicating terminals connected on the same bus that there is a terminal on standby. .

Further explanation will be given below with reference to FIG. 2 and No. 3121.

FIG. 2 is a configuration diagram when multiple terminals are connected to the same line operator, and shows an example of the 41'4 configuration of the ISDN terminal system, and the i:153 diagram shows the operation in this embodiment. This is a flowchart 1 for explaining p-order.

2 In the ISDN terminal system, as shown in Figure 2, which shows the relationship when multiple terminals are connected on the same bus, there is a network termination device (1) that is the network termination connected to the ISDN network. SIJ) 21, and a bus line 2o connected to each terminal is connected thereto. As mentioned above, a user with one subscriber line can connect up to 8 terminals as ISDN terminals to the bus, and in this example, the ISDN terminal (A)
A total of four terminals, I-1 to [5l)N terminal (+))l-/I, are connected on the same bus.

L Note I S D N g+j end (A) l-1 to I 5
t) N terminals (+)) l-4 are all +1-! described with reference to FIG. Ii to become! However, in the case described below, when terminal (c) 1-■ and terminal (+3) l-2 are communicating at the same time, terminal (c) 1-3 is used as a 3-way terminal. In this system example, at least terminals (C) 1-3 are busy and display the message 11 on their own address. The third action
The terminal (
A) I-1 and terminal (+3) l-2 have the function of executing the process shown in FIG. 3 (13), which is the operation of communication 1+Q terminal, and are equipped with the display unit 13.6 The above system You can operate the terminal as follows.

That is, in FIG. 2, as mentioned above, the terminal (
Assume that Δ) 1-1 and terminal (B) 1-2 are communicating at the same time, and in this state, terminal (C) 1-3 receives 31T! Suppose you want to practice faith.

In this case, the terminal (C) I-3 makes a call according to the flowchart 1 of the terminal waiting for the end of communication shown in FIG. 3 (Δ). That is, when the terminal (C) l-3 makes a call tVC1', first, in step 301, its main control unit lOO always determines whether or not the bus is busy.

In this case, you can get a yes answer because the bus is busy, but if you get a no answer, the normal output +1'
The program moves to Jt processing and finishes the tree block a-gram.

That is, a call is made to the address (step 302).
.

However, now a Yes answer is obtained at step 301, and if the 111 is rejected because there is no channel in use (bus busy), a call is made to the own address at step 30:3. .

- power, at this time, the communicating terminal (Δ) I-1, the terminal (+3
) On the l-2 side, in its main control unit 1 100, the third
1. Processing as shown in flowchart 1 for N+(+3) communicating terminals is executed. That is, here, riIJ
When a call arrives at the terminal (Δ)l-1 and the terminal (+3)I-2, in step 311, if the terminal 'Fl' is from the own address and the own terminal is the communication, then in step 3
Proceeding to step 12, in order to notify the terminal user, a message ``There is a terminal on standby'' is displayed on the panel display 1'jll+3.

In this way, according to configuration 1, terminal (Δ) 1-
1. In contrast to terminal (+3) 1-2 used, other terminal (C)
By notifying that I-3 is requesting one channel, in the case of low-priority or long-time communication, it is encouraged to give up one channel, making effective use of the line. be able to.

In this embodiment, the display 111 is displayed in 3, but other methods may also be used. For example, the means for going to the group kidney in step 312 in FIG. 3 (13) is as follows:
In addition to displaying the information on the panel, it may be possible to notify by flashing a lamp or making a sound.

Next, other embodiments of the present invention are shown in FIGS. 4 to 7.

FIG. 4 is a block diagram showing the (1-1 configuration) of the communication fiT device W according to this embodiment, FIG. 5 shows the operation of this embodiment when making a call, and FIG. FIG.

Further, FIG. 7 is a diagram for explaining the operation of the device of this embodiment, and shows the ISDN when the communication device of FIG. 4 is used.
An example of a terminal system is shown.

In FIG. 4, a communication device main body (terminal) 4 of this embodiment is basically the same as that of the previous embodiment, and has a CP (J/1
01, ROM 402 and 1≧ΔM, 403, and further includes a line control rot (CCU), i
! and function r1142 (
This example also includes a telephone function section), and a line control section 4.
1 is connected to an external bus line 50.

This embodiment is an example of an ISDN terminal in which calls are made to emergency type 1llTi (tD police, fire department, etc.) first, and is an extension of the previous embodiment.

In other words, if it is necessary to make an urgent communication when the bus is busy, a means is provided to send an IJ disconnection request to the terminal in communication, thereby freeing the channel and allowing the urgent communication to take place. It is something.

Therefore, the control program shown in FIGS. 5 and 6 is used, and control is executed based on this program.

Below, we will explain what happens when the terminal in Figure 4 becomes the Q-terminal on the calling 11T side, that is, when the bus is busy and the three terminals become ``1''. The processing in these cases will be explained separately in this order.

First, referring to FIG. 5, the operation of making an emergency telephone call will be described.

When a calling operation is performed, first, as in the case of FIG. 3 (Δ), it is determined in step 501 whether or not the bus is busy.

If the answer is NO, Q117 is executed as usual (step 502), and the program is terminated.

On the other hand, if the answer is Yes, it is further determined in step 503 whether the destination address is an emergency address.

That is, if the call is not accepted in step 501 and the bus is busy, the destination address is analyzed in step 503. If the answer is NO and the called address is an emergency address (notification to police, fire department, etc.), the call will be terminated.
What happens when waiting for channel release (step 504)?
.

On the other hand, if the called address is an emergency address, that is, if the answer to both steps 501 and 503 is Yes, the call is made to the own address, considering it as an emergency call (step 505), and in that case, In the user/user information of the call information, "Emergency i11! Call waiting J" information should be included.

In response to this information, the other iIJ terminals that are currently communicating perform the process shown in Figure 6 below, and the channel is released.As a result, the terminal's idle state is released at that point. The terminal on the consumer's side can make a call to an emergency telephone in step 502.

Next, with reference to FIG. 6, the operation of the terminal during bus busy communication will be described according to a flowchart.

In FIG. 6, when there is an incoming call, first step 6
At 01, check to see if communication is in progress, and the answer is N.

If so, an incoming call operation is performed (step 602) and the program is terminated, while if the answer is Yes and communication is possible, the originating address is analyzed in step 603.

Next, in step 60/I, it is determined whether it is the own address or not,
If the answer is No, and it is not the own address, the caller I'J' is rejected (step 605) and this program is terminated.On the other hand, if the answer to step 604 is Y a S,
In other words, if ↑T(R) from the own address, the above-mentioned user/user information element is analyzed (step 606).
. In the following step 607, it is determined whether there is a disconnection request based on the result.

If the answer is NO, the user/user information is nl
Statement (7) r Emergency? If you don't have 11th episode, 11th wait, tY IFF 'e1! Step 605)
, if the answer is YaS, that is, if the user/user information element is [wait for emergency call number 11], step 60
Start the release operation of channel 8.

In this way, the busy state is released.

In this way, when the emergency telephone makes a call when the bus is busy, by releasing the channel of the communicating terminal, emergency type 11η communication can be performed without waiting.

The operation described in item 1 will be explained using a specific case in the system shown in FIG. 7 as follows.

In the same figure, this system is I) SU (Network Terminal Unit) 5
1, and three 131)N weak IJ terminals are connected on the same bus. The two phones are (c), (c)'I-1, /
I-3, and one is a facsimile (17△X) (+3
)/I-2, and at least telephone (C)/I-3 is the fifth
Perform the movement (1・r) shown in the figure, 1 story (△)/I-
At least one of FAX (+3)/I-2 and FAX (+3)/I-2 can perform the operation of the communicating terminal during bus busy time shown in FIG. 6, and in this example, both terminals can perform the operation.

Now, assume that the telephone (Δ) 4-1 and the FAX (+3) 4-2 are in communication.

In this state, when the operator of telephone (C)/I-3 makes an emergency call, telephone (A) 4-1 and FA
X(13)/l-2 receives a call from telephone (C)/l-3 to the user/user information as described above. r;AX(+
3) /l-2 releases the key channel based on this, and it becomes possible to make a call to the telephone (C).

In this embodiment, the detection of bus busy is determined by the information element displayed in the controller 111 in the network release completion message, but the bus status can be known in advance by a line monitor, a bus busy detector, or the like. In this case, it is sufficient to start with the operation of calling the own address in step 505 in FIG.

Furthermore, when releasing a channel in step 608 in FIG. 6, if a specific Q terminal does not want to release the channel midway through, only a pre-designated terminal may release the channel. .

(Effects of the Invention) According to the present invention, it is possible to notify a communicating terminal that there is a waiting terminal, and it is possible to notify a communicating terminal that there is a waiting terminal, so that it is possible to terminate the communication of a communicating terminal, unlike the conventional method. The inconvenience of having to wait passively for :t is alleviated. A communicating terminal can know that another terminal is requesting the use of a channel, and can appropriately urge the terminal to hand over the channel, allowing effective use of the line.

Also, IS that prioritizes high-priority communications
The DN terminal system can be used, especially when the bus is busy, and emergency call 71 can be used to call 117, which has the effect of allowing emergency call A to be carried out quickly.

[Brief explanation of drawings]

The figures show an embodiment of the present invention. Fig. 1 is a block diagram of the terminal (11Y configuration not shown) according to an embodiment of the present invention, and Fig. 2 is a block diagram of the same bus. A diagram showing an example of an ISDN terminal system when several IM terminals are connected to a
FIG. 4 is a block diagram showing the configuration of a terminal according to an embodiment of the present invention, and FIGS. Flowchart 1 for explaining an example of the processing operation when the terminal becomes the originating 119 side terminal and when it becomes the called terminal. Figure 7 shows an ISDN terminal system using the terminal shown in Figure 4. It is a figure for explaining an example and its operation method. 1.4...Terminal, l-1 to 1-4...Same bus J-
terminal, 4-1.4-3... electric, 11η, 4-2...
Facsimile, ti,, it...CCU, l 2. /
l 2...Terminal-specific function section (telephone function section), 13.
・・Display part, 20゜50・・Bus line, 21.51・
・1. ) S U, 100°/100...main control unit,
101,401...CI) U, 102.402...
・l history OM, 103,403...1 ma ΔM. (A) '83 fB) Ne5 Figure 6 Figure

Claims (1)

[Scope of Claims] 1. An ISDN terminal connected to an ISDN, characterized by having a function of notifying other communicating terminals connected to the bus to which the ISDN terminal is connected that a bus is busy. ISDN terminal. 2. An ISDN terminal system comprising one or more ISDN terminals according to claim 1 and connecting a plurality of terminals on the same bus, characterized in that a calling party notifies the terminal during communication that the bus is busy. system. 3. An ISDN terminal system in which a plurality of ISDN terminals are connected on the same bus, and is characterized in that communication with a high priority is given priority. 4. The ISDN terminal system according to claim 3, wherein priority is given to calling an emergency telephone.