JPH0548729A - Data distributing method - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To obtain a data distribution method with high line efficiency and capable of suppressing the occurrence of unnecessary undelivered termination. [Structure] The state of the line to the terminal device on the receiving side is constantly monitored (ST9), and when a vacant line is detected in the line to the terminal device on the receiving side (ST10), the line is used for storage. The data that had been distributed (ST12, ST1
3) Also, regarding the data for which the delivery time is specified,
Monitoring of the state of the line to the terminal device on the receiving side is started from a certain time before the delivery time (ST8, ST9, ST10,
ST11), when a vacancy is detected in the line to the terminal device on the receiving side, the use is reserved (ST12). [Effect] E-mail can be delivered efficiently in a short time, and a data delivery method that does not cause unnecessary termination of undelivered delivery can be obtained by eliminating the repetition of waiting time and re-calling processing without a free line. ..

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data distribution method for temporarily storing data from a terminal device on the transmitting side in a storage / exchange device and distributing it to the terminal device on the receiving side.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing a digital communication network to which the present invention disclosed in Japanese Patent Laid-Open No. 2-2268 and a conventional data distribution method are applied.
In the figure, 111 to 133 are facsimile terminals (hereinafter referred to as FAX) as terminal devices of the digital communication network in which data is mutually transmitted and received.

Numerals 21 to 23 are the FAXs 111 to 13
3 is a multimedia multiplexer (hereinafter referred to as MUX) as a multiplexer for accommodating 3 and 31 to 33 are FAs.
A private branch exchange (hereinafter referred to as PBX) for connecting and housing the X111 to 133 to the MUXs 21 to 23.

That is, the FA in the PBX31 for the MUX21
X111, 112, MUX22 F by PBX32
FAXs 131 to 133 are connected and housed in the AX 121 and 122, and in the MUX 23 by the PBX 33.

Reference numeral 4 denotes a storage / exchange device connected to the MUX 22 via the PBX 32, which has a plurality of communication channels and can communicate with the FAXs 111 to 133 corresponding to the number of the communication channels.

In the storage / exchange device 4, reference numeral 41 denotes a central processing unit (hereinafter, referred to as a central processing unit) that controls the storage / exchange device.
CPU) and 42 is connected PBX3
2 is a communication control unit for controlling transmission / reception with
The memory unit stores data such as image signals from 1 to 133 and various tables.

Reference numerals 51 and 52 denote the MUX21 and MUX2.
2 or a high speed digital line as a transmission line connecting between the MUX 22 and the MUX 23.

Next, the operation will be described. Here, FIG.
Is a flow chart showing the flow of a conventional data distribution method.
It is assumed that the image signal to be transmitted from No. 2 is once stored in the memory unit 43, and its operation will be described according to the above-mentioned flowchart.

When there is data to be sent, the CPU 41 of the storage exchange apparatus 4 controls the communication in step ST1 regardless of the state of the line that can be used by itself and the state of the FAX 111 to 133 to which the data is transmitted. Part 42
Attempt to make a call to PBX 32 via.

When a vacancy is detected in the calling line by the line availability check in step ST2, the data temporarily stored in the memory unit 43 is distributed (mail transmission) using the line in step ST3. And end normally.

When it is detected in step ST2 that the calling lines are all busy, the process proceeds to step ST4, and the counter that counts the number of calling retries is incremented.

Next, in step ST5, it is detected whether or not the count value of the counter exceeds a predetermined number of retries, and if not, the call timer is set in step ST6, and the call timer is set. When the time is up, the calling process is executed again in step ST1.

As a result, if it is not possible to detect a vacancy in the calling line in step ST2, the process proceeds to step ST4, and the calling process is periodically repeated while incrementing the counter. Further, if an empty calling line is detected during that time, the mail is transmitted in step ST3 and the processing ends normally.

On the other hand, if it is detected in step ST5 that the count value of the counter exceeds a predetermined number of retries before the call line is not available in step ST2,
In step ST7, the fact that the mail transmission has failed is notified and the calling process ends.

As a document in which a technique related to such a conventional data distribution method is described, there is, for example, Japanese Patent Laid-Open No. 2-2268.

[0016]

Since the conventional data distribution method is configured as described above, when a call is made once and busy of the line is detected, the process of re-calling is waited for a fixed time. When a congestion occurs, as a result, the specified number of retries ends without being able to send the target data by e-mail, and the processing often ends unnecessarily as unsent, and until the end of e-mail transmission. There was a problem that it took a long time and the line efficiency deteriorated.

The present invention has been made to solve the above problems, and an object thereof is to obtain a data distribution method capable of improving the line efficiency and suppressing the occurrence of undelivered termination.

[0018]

According to the data distribution method of the invention described in claim 1, when there is no free line to the terminal device on the receiving side, a predetermined monitoring time is set to the terminal device on the receiving side. The state of the line is monitored, and if an empty line is detected in the line to the terminal device on the receiving side within the monitoring time, the accumulated data is distributed using the line.

According to the second aspect of the present invention, there is provided a data delivery method, wherein, for data having a designated delivery time in the accumulated data, a line to a terminal device on the receiving side is provided from a certain time before the delivery time. The state is monitored, the use is reserved when a vacancy is detected in the line to the receiving side terminal device, and the reserved line is used to distribute the data at the distribution time.

[0020]

According to the data distribution method of the invention described in claim 1, when the busy of the line to the terminal device on the receiving side is detected,
Monitoring the availability of a line to the terminal device on the receiving side starts, and if a line is detected within a predetermined monitoring time, data is distributed using that line, resulting in high line efficiency and To realize a data distribution method that can suppress the occurrence of distribution end.

In the data distribution method according to the second aspect of the invention, the state of the line to the terminal device on the receiving side is monitored from a predetermined time before the specified distribution time, and the line to the terminal device on the receiving side is monitored. When a free space is detected, the use thereof is reserved, thereby realizing a data distribution method having high line efficiency and suppressing the occurrence of undelivered end.

[0022]

EXAMPLES Example 1. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a flowchart showing an embodiment of the invention described in claim 1. In the figure, ST1 to S
Since T3 and ST8 are the same as the conventional processing steps denoted by the same reference numerals in FIG. 4, detailed description thereof will be omitted.

Further, step ST8 is a processing step for setting a timer that defines the line idle monitoring duration, step ST9 is a processing step for performing line idle monitoring, and step ST10 is a processing step for checking an idle line.

Step ST11 is a processing step for detecting the time-up of the timer set in step ST8, and step ST12 is a processing step for executing a calling process when an idle line is detected in step ST10.

Next, the operation will be described. As in the conventional case, the storage / exchange device 4 stores the FAX in the memory unit 43.
The data transmitted from 121 and 122 is temporarily stored, and an attempt is made to call the distribution destination of the data in step ST1. When the vacancy of the line corresponding to the delivery destination is detected in step ST2, the mail is transmitted through the line in step ST3 and the process ends normally.

When it is detected that the line is busy by the air-block check in step ST2, the CPU 41 of the storage and switching apparatus 4 sets the line idle monitoring duration timer in step ST8, and then executes the process. Go to step ST9.

In step ST9, the time slot allocated for transmitting and receiving the data is managed, that is, the presence or absence of an empty line is constantly monitored, and when there is an empty channel, the specified distribution of the undelivered data that has been accumulated. The corresponding available line is checked in step ST10.

As a result, if there is no free line to the corresponding delivery destination, in step ST11, the time set by the timer set in step ST8 is checked. If not, the process is returned to step ST9 and the line is set free. Monitor.

When it is detected in step ST10 that there is a free line to the designated delivery destination, in step ST12 the delivery of the undelivered data is called to the designated delivery destination, and in step ST3. Send an email with and complete normally.

On the other hand, if a time-out of the timer is detected in step ST11 before a free line to the destination is not detected in step ST10, step ST7
Then, the fact that the mail transmission has failed is notified and the calling process ends.

Example 2. FIG. 2 is a flow chart showing an embodiment of the invention described in claim 2, and shows a process when the accumulated data is automatically delivered at a designated time.

That is, the mail sender specifies the delivery time in step ST21 and registers the data in the memory section 43 of the storage / exchange device 4, and the CPU 41 of the storage / exchange device 4 registers the delivery time of each stored data. The step ST
I always check at 22.

When it is detected in step ST22 that the time is a fixed time before the registered delivery time, the CPU
In step ST23, 41 starts monitoring the availability of the line to the distribution destination of the data. When the vacancy of the line is detected in step ST24, the use of the line is reserved in step ST25, and the process waits until the designated delivery time comes.

When it is detected in step ST26 that the designated distribution time has come, the distribution destination is called in step ST27, and mail is transmitted in step ST28 to end normally.

[0035]

As described above, according to the first aspect of the present invention, the state of the line to the terminal device on the receiving side is constantly monitored, and an empty line is detected in the line to the terminal device on the receiving side. When it is sent, it is configured to deliver the accumulated data using the free line, so it is possible to deliver mail efficiently in a short time. No more repeating call processing,
There is an effect that a data distribution method that does not cause useless undelivered termination can be obtained.

According to the second aspect of the invention, monitoring of the state of the line to the terminal device on the receiving side is started from a certain time before the distribution time of the data having the specified distribution time,
Since it is configured to reserve the use of an available line when it is detected in the line to the terminal device on the receiving side, it is possible to deliver mail efficiently in a short time. Since there is no need to repeat the recalling process, there is an effect that a data delivery method that does not cause unnecessary undelivered termination can be obtained.

[Brief description of drawings]

FIG. 1 is a flowchart showing a data distribution method according to an embodiment of the invention described in claim 1.

FIG. 2 is a flowchart showing an embodiment of the invention described in claim 2.

FIG. 3 is a block diagram showing an example of a digital communication network to which the present invention and a conventional data distribution method are applied.

FIG. 4 is a flowchart showing a conventional data distribution method.

[Explanation of symbols]

 111-133 Terminal equipment (FAX) 21-23 Multiplexing equipment (MUX) 4 Storage and switching equipment 51,52 Transmission line (high-speed digital line)

Claims (2)

[Claims] 1. Multiplexing devices, each accommodating a plurality of terminal devices, are connected by a transmission line, and one of the multiplexing devices has a plurality of communication channels for communication. When connecting a storage / exchange device capable of communicating with the number of channels of the terminal device and transmitting / receiving data, after temporarily storing the data from the terminal device on the transmission side in the storage / exchange device, In the data distribution method of distributing to the terminal device, if the line to the terminal device on the receiving side is not occupied when data is accumulated from the terminal device on the transmitting side, a predetermined monitoring time is set to determine the receiving side. Monitoring the state of the line to the terminal device, and if the vacancy is detected in the line to the receiving side terminal device within the monitoring time, the stored data is distributed using the line. Data distribution method characterized by. 2. Multiplexing devices, each accommodating a plurality of terminal devices, are connected by a transmission line, and one of the multiplexing devices has a plurality of communication channels for communication. When connecting a storage / exchange device capable of communicating with the number of channels of the terminal device and transmitting / receiving data, after temporarily storing the data from the terminal device on the transmission side in the storage / exchange device, In the data distribution method of distributing to the terminal device, the state of the line to the terminal device on the receiving side is monitored from a certain time before the distribution time of the data whose distribution time is specified in the accumulated data. When a free space is detected in the line to the terminal device on the receiving side, the use of the line is reserved, and when the delivery time comes, the reserved line is used to store the data for which the delivery time is designated. To deliver A data distribution method characterized by the above.