JPH01189262A - Call control system for communicating device - Google Patents

Abstract

PURPOSE:To shorten a time up to a connection completion with a communication opponent by selecting a number from the dial number of a storing means to be connection-completed at the time of the call of a previous time in order and controlling the call so as to execute the call of a present time. CONSTITUTION:For example, when an NCU 3b of a dial number '2222' is not busy, an automatic incoming action is executed, a connection completion detecting circuit 15 detects the connection completion, and a control part 11 is informed of it. Thus, the control part 11 sets a '1' (connection completion) to a call flag column 12b of the second dial number of a memory 12, and a CPU 17 is informed of the connection completion. Thus, the CPU 17 starts a data communication and disconnects a line after the data communication. Next, when the CPU 17 re-generates a connection request to the control part 11 for the communication, the control part 11 investigates the call flag column 12b of the memory 12, and the dial number, in which a flag '1' rises, is made into a head for a call order. Consequently, the call order is made into No.2, No.3, No.4 and No.1, and the dial number to be busy previous time is made into the last.

Description

[Detailed description of the invention] [Table of contents] Overview Industrial field of application Prior art (Figures 5 and 6) Problems to be solved by the invention Means for solving the problems (Figure 1) Working examples (a) Description of one embodiment (Figures 2, 3, and 4) (b
) Description of other embodiments Effects of the invention [Summary] In a communication device that uses a public telephone line to call and communicate with a called party using a dial number, when a call using one dial number is busy, a call using another dial number can be made. Regarding the call origination control method, with the aim of shortening the time it takes to complete a connection with the communication partner, a memory section that stores multiple dial numbers, a dial number in the memory section, and a call control method are used. and a control unit that makes a call and performs communication upon completion of connection with the other party, and the control unit detects a busy state when a call is made using one dial number of the storage unit, and selects the next dial number of the storage unit. In a call origination control method for a communication device in which a call is made by number, the control unit selects and makes a call in order from the dial number of the storage unit to which connection was completed at the time of the previous call. did.

[Industrial application field]

The present invention provides a call control system for a communication device that uses a public telephone line to call and communicate with a called party using a dial number, in which when a call using one dial number is busy, a call is made using another dial number. Regarding.

With the development of communication network technology in recent years, communication devices are equipped with automatic call/receive functions and automatic re-call functions, with the aim of automating communication connections.

Such communication devices include facsimiles for image communication,
There are various types of telephones for voice communication, data communication devices for data communication, etc.

In such a communication device, if only one telephone number is assigned to a communication partner, if the telephone line is busy, it is necessary to wait until the busy telephone line is released.

For this reason, there is a need for call control technology that allows communication with multiple phone numbers, and when the line of one phone number is busy, the line of another phone number can be used for communication. ing.

[Conventional technology]

FIGS. 5 and 6 are explanatory diagrams of the prior art.

As shown in FIG. 5(A), the computer 4 is connected to the exchange 2.
Consider a system in which a plurality of workstations 1a-In are connected via.

In this system, if there is only one line to the computer 4, other workstations cannot be used while one workstation is in use, so the computer 4 is connected to multiple (four in the figure) NCUs (mi control units). 3a-3
d and is connected to four telephone lines (telephone numbers).

In such a system, each workstation 1a to 1n can be connected to the computer 4 using any of four telephone lines (telephone numbers); for example, if one telephone line is busy, other You can make a call and connect to a telephone line.

In order to provide this kind of functionality, workstation 1
a has a telephone line tI! , and a dial control section 11.

The dial control unit 11 has a memory 12 that stores the four telephone numbers of the computer 4, and in response to a call request from an internal unit, calls are made using one dial number of the memory I2, and if the computer 4 is busy, it makes a call. , dial the following number,
It is known to search for a free line and connect to the computer 4 for communication. For example, patent application publication 61-2
It is disclosed in Japanese Patent No. 93065.

As shown in FIG. 6, in conventional call control in such a communication device, in response to a connection request from an internal CPU (application program), dial control unit 11 dials the first dial number ( r l 111
, h).

If the line is busy with this dial number, 'F2 seconds later 1st 2nd
Make a dial call using the th dial number ('2222J).

Now, if the line is connected, the CPU will confirm that the connection is complete.
Notify.

This causes the CPU to send the line tI! , to transmit data to the computer 4 and receive data from the computer 4.

Next, when there is a connection request from the CPU, the dial control unit 1
1 makes a call again in order from the first dial number in the memory 12.

[Problem to be solved by the invention]

By the way, in the prior art, when making a second call, telephone numbers are selected in a predetermined order and the call is made, regardless of whether or not the telephone number is busy the first time.

However, if a call is made frequently at -g, there is a high possibility that the call that was previously busy will also be busy at the time of the current call.

For this reason, the conventional technology has a problem in that it takes time to search for an available dial line, and it takes a long time to complete the connection.

This is especially true when multiple stations are connected and the order of dial numbers for dial connections is the same.

Furthermore, since unnecessary inquiries are made, there is a problem in that the efficiency of line usage deteriorates.

SUMMARY OF THE INVENTION An object of the present invention is to provide a call origination control method for a communication device that can shorten the time required to complete connection with a communication partner.

[Means to solve the problem]

FIG. 1 is a diagram explaining the principle of the present invention.

In the figure, the same parts as those shown in FIG. 5 are indicated by the same symbols.

In the present invention, the control unit 11 performs call origination control such that the current call is made by sequentially selecting the dial numbers in the storage unit 12 from which the connection was completed during the previous call (2).

[Effect]

In the present invention, for devices that communicate frequently, if the device was busy last time, there is a high possibility that it will be busy this time as well, and if the connection was completed last time, there is a high possibility that the connection will be made this time as well. Therefore, the calling order is changed in order from the dial number to which the connection was completed in the previous call, thereby shortening the time it takes to complete the connection and preventing unnecessary line usage.

〔Example〕

(a) Description of one embodiment FIG. 2 is a configuration diagram of an embodiment of the present invention.

In the figure, the same components as those shown in FIGS. 1 and 5 are indicated by the same symbols, 13 is a communication control circuit that controls data transmission and reception, and 14 is an automatic dialing circuit. 15 is a connection completion detection circuit which detects a connection signal from the other party via line me to detect connection completion; 16 is a connection completion detection circuit; This is a busy detection circuit that detects a busy state when a busy signal from the other party via the line 12 continues for a certain period of time.

17 is a main CPU (processor), which performs various necessary data processing and also communicates via a communication adapter CAP; 18 is a memory;
In addition to storing programs for processing, various data such as transmitted and received data are stored. 19 is a bus, which includes a main CPU 17, a memory 18, and a communication adapter CAP.
It is used to exchange data and commands.

The dial control unit 11 is composed of a processor and performs automatic call processing, automatic call reception processing, etc., and has a memory 12.
is the communication flag 12 corresponding to each dial number area 12a.
b is provided.

3 and 4 are explanatory diagrams of the operation of one embodiment of the present invention.

(2) The application program executed by the CP (J17) issues a connection request to the dial control unit 11 via the bus I9 when communicating.

Here, as shown in FIG. 4 (Δ), it is assumed that the call flags 12b for the four dial numbers of the computer 40 stored in the memory 12 are all set to "0" (not connected).

The control unit 11 checks the call flag 12b in the memory 12,
If all are determined to be “0゛°, the first dial number rl
Select I I IJ and instruct the automatic dialing circuit I4 to make a dial call using the dial number rllllJ.

The automatic dialing circuit 14 makes a call with the dial number "rll11" and calls the line L! via the NCUIO. Send to.

(6) On the other hand, the dial number rl l l l,
If the NCU 3 a is busy, the busy detection circuit 16 detects this and notifies the dial control unit 11 of the busy state.

Since the first dial number is busy, the control unit 11 selects the second dial number [22221] in the memory 12 and instructs the automatic dialing circuit 14 to initiate a dial call.

0 On the other hand, the dial number r2222. NCU3 of
If terminal b is not busy, an automatic call reception operation is performed, whereby the connection completion detection circuit I5 detects the completion of the connection and notifies the control unit 11.

The control unit 11 thereby sets "1"° (connection complete) in the call flag column 12b of the second dialed number in the memory 12, as shown in FIG. 4(B).

Then, the control unit (1) notifies the CPU 17 via the lotus 19 of the completion of the connection.

(a) As a result, the CPU 17 starts data communication, sends and receives data to and from the computer 4 from the NCUIO via the communication control circuit 13, and disconnects the line after the data communication is completed.

(2) Next, the CPU 17 again issues a connection request to the control unit 11 for communication.

The control unit 11 checks the call flag a12b in the memory 12 and sets the communication flag +1rJ12b in the memory 12 as shown in FIG. 4(B).
Therefore, the control unit 11 sets the calling order using the flag I.
Place the dial number with ゛ at the beginning.

Therefore, the calling order is Toru 2, Tane 3, Ken 4, and Nα1, and the dialed number that was previously busy becomes the last.

α゛1 The control unit 11 receives the dial number r2222 of “1°” of the communication flag 12b. , and instructs the automatic dialing circuit 14 to make a dialing call.

If the connection is completed due to dirt, C
P (Notify J l 7 of connection completion.

@+CPU 17 communicates data with computer 4 similarly to step (a).

Here, in step ■), if the dial number "2222" is busy, the memory 12e third dial number r3
Dial 333 J.

When the connection is completed by dialing number 3 [1] r3333J, the call flag a12b in the memory 12 in FIG.
is the third dial number r3333. call flag 12
b becomes "l" and the second dial number 'I3-'
2222] is changed to "Pa0".

Therefore, next time, the call will be made from the third dial number "3333J."

In this way, the dialing number that was connected last time is placed first in the order of dialing, and the dialing is made.

(b) Description of Other Embodiments In the above-described embodiments, a workstation was used as an example of a communication device, but it may be a well-known device such as a facsimile or a telephone terminal.

In addition, the communication partner is not limited to a computer, but may also be a facsimile, etc., and one computer may have multiple NCUs,
In other words, although we have described an example in which a line is provided, for example, as seen in Patent Application Publication No. 61-293065, multiple communication devices such as facsimiles are provided in the same place, and if one of these is used, It may also be applied to systems that communicate using

Furthermore, although the connection completion 3 is indicated by a call flag and the call order is determined by the call flag, other methods of changing the list order of dialed numbers may be used.

Although the present invention has been described above using examples, the present invention can be modified in various ways according to the gist of the present invention, and these are not excluded from the present invention.

〔Effect of the invention〕

As explained above, according to the present invention, in a device that connects a communication line by sequentially selecting a plurality of dial numbers and making a call, it is possible to shorten the time required to complete connection with a communication partner. In addition, since the call is made from the device that is most likely to be connected, there are no unnecessary inquiries.
It has the effect of contributing to improving line usage efficiency,
Contribute to the improvement of automatic call/recall functions.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the principle of the present invention, FIG. 2 is a configuration diagram of an embodiment of the present invention, FIGS. 3 and 4 are diagrams explaining the operation of an embodiment of the present invention, and FIG.
FIG. 6 is an explanatory diagram of the prior art. In the figure, 1a-In-workstation (communication device), If-dial control section (control section), 12-memory (storage section). Figure 3 (A) for the explanation of the 11th movement of the 11th movement of the conventional technique (A) Figure 5

Claims (1)

[Claims] (1) A storage unit (12) that stores a plurality of dial numbers, and a control unit (12) that selects a dial number in the storage unit (12), makes a call using the dial number, and performs communication upon completion of connection with the other party. 11), the control unit (11) detects a busy state in response to a call originating from one dial number of the storage unit (12), and
), the control unit (11) uses the dial number of the storage unit (12) to which the connection was completed at the time of the previous call. 1. A call control method for a communication device, characterized in that calls are made by selecting sequentially from .