JPH03127534A - Message transmission system - Google Patents

Abstract

PURPOSE:To enhance the response for confirming reception notice and to decrease a memory capacity by processing a message, transmitting the result and sending a reception simulating control notice in a same call to a caller. CONSTITUTION:When a caller terminal equipment (general terminal equipment 1c) calls a called terminal equipment (G3 FAX), a reception simulating control notice is returned from the called terminal equipment (G3 FAX) to the caller terminal equipment (general terminal equipment 1c) in the call, that is, in the state of a same call when the caller terminal equipment is connected to the caller terminal equipment via a transmitter 2c. In this case, since a message is processed, a problem due to difference between the characteristic and the speed of the caller terminal equipment and the called terminal equipment is not caused. Thus, the response is enhanced and the memory capacity is de creased.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a message transmission system for inputting a message from a calling terminal and transmitting it to a called terminal.

[Conventional technology]

"MELFANET Overview" (MELCOM70 series manual published by Mitsubishi Electric Corporation, October 1980) and "Mitsubishi facsimile mail system MEL
FANETJ (January 1st year.

MELCOM News published by Mitsubishi Electric Corporation P4゜P5
The conventional technology will be explained by taking as an example a facsimile transmission device using two types of exchange methods described in .

FIG. 3 shows the countries in which the conventional line-switched facsimile transmission equipment is constructed. In the figure, reference numeral 1 indicates a group 3 facsimile terminal (hereinafter referred to as G3 FAX terminal) that follows the CCITT Recommendation T, 30 procedure, as a calling side terminal, and 2a
is a line-switched facsimile transmission device (telephone line-switched
4), 3 is, for example, a G3 FAX terminal as a called terminal device.

Next, the operation will be explained. First, the calling G3 FAX terminal 1 calls the called G3 FAX terminal 3, that is, dials the telephone line switching network.

Telephone line switching 1] (Line switching type facsimile transmission equipment 2
a) calls (dials) the called G3 FAX terminal 3; The called side G3 FAX terminal 3 receives a digital signal identification signal DI S (Digital Identifica
tion Signal). This DIS signal is transmitted to the calling side G3 FAX terminal l via the telephone line switching network. After confirming that the called G3 FAX terminal 3 was successfully called by receiving this DIS signal, the calling G3 FAX terminal 1 transmits a message (telegram) by following a predetermined procedure. This message is transmitted to the called G3 FAX terminal 3 via the telephone line switching network.

If this message is normally received by the called side G3 FAX terminal 3, the message confirmation MCF (Messag
e Confirmation) signal. This MC
The F signal is transmitted to the calling side G3 FAX terminal 1 via the telephone line switching network.

The calling side G3 FAX terminal 1 confirms that the message has been transmitted normally by receiving this MCF signal.

FIG. 4 is a block diagram of a conventional store-and-forward type fudge ξ-return transmission device. In the figure, la and lb are calling side terminal devices, and a G3 FAX or a general terminal is used (here, it is assumed to be a general terminal). 2b is a store-and-forward type facsimile transmission device, 3 is a called side G3 FAX terminal, and 4b is a storage processing unit provided in the facsimile transmission device 2b. Note that 1a and 1b may be the same terminal.

Next, the operation will be explained using the flowchart shown in FIG. The caller's general terminal 1a first calls the store-and-forward facsimile transmission device 2b.
(message 1). In the store-and-forward facsimile transmission device 2b, this call 1 or message 1 is sent to the storage processing unit 4b, which converts the communication speed and converts it into G3 FAX.
Performs processing such as image conversion. Next, the store-and-forward facsimile transmission device 2b calls the called G3 FAX terminal 3 (Call 2), checks the DIS signal from the called G3 FAX terminal 3, and transmits the message by following a predetermined procedure (Message 2). . When the called G3 FAX terminal 3 receives this message normally, it sends the message f11! Returns the certified MCF. The store-and-forward facsimile transmission device 2b uses the store-and-forward processing unit 4b to process the DfS returned from the G3 FAX terminal 3.
Create a notification message based on the signal or MCF signal.

Next, the store-and-forward facsimile transmission device 2b makes a call 3) to the general terminal 1b and transmits this notification message.

[Problem to be solved by the invention]

However, the conventional line-switching transmission system shown in FIG. 3 is an instant transmission system and has no storage processing section, so it has characteristics that differ between different models.

There was a problem in that it was not possible to perform processing to match the speeds, and it was not possible to transmit data from a different communication speed or a different type of terminal (other than a 03 FAX terminal) to a G3 FAX terminal.

Furthermore, the conventional store-and-forward type transmission device shown in Fig. 4 is configured to completely store all messages, terminate the call, and then exchange them again in another call. Since it is not possible to immediately confirm the reception notification, there is a problem in that it is not possible to promptly confirm whether the fax has reached the 03 FAX terminal or not. Moreover, even if there is no free line, messages are sent manually, so there is a waiting time until a free line exists. Therefore, in order to solve these problems, Japanese Patent Application Laid-Open No. 61-69255
A facsimile storage and forwarding system shown in the above publication is known.

This is equipped with a register that outputs a response signal to the calling terminal in response to a specific output signal from the called terminal.
Moreover, since the message is input after there is a free line, the same problem as above occurs.

This invention was made in order to solve the above-mentioned problems, and it adds a processing function to enable transmission from a different speed terminal device or a different model terminal device to a predetermined called terminal device. , generate a false reception notification on the same call to improve the responsiveness of the reception notification confirmation, and preferably input the message after a free line is available to further improve the responsiveness of the reception notification confirmation. Another object of the present invention is to provide a message transmission method that can also reduce memory capacity.

[Means to solve the problem]

A first invention of the present application includes a calling terminal device, a called terminal device, and a transmission device that processes a message from the calling terminal device and transmits the processed message to the called terminal device, When the calling terminal device makes a call to the called terminal device, the transmission device sends a false notification that the called terminal device has received a message from the calling terminal device. It is characterized in that it is returned to the calling terminal device.

A second invention, in addition to the first invention, is that the transmission device inputs a message from the calling terminal device when it is determined that the line of the called terminal device is idle. Features.

[Effect]

The calling side terminal device (general terminal IC) is connected to the called side terminal device (G
3 FAX 3), the reception fake notification is sent to the called terminal device during the call, that is, in the same call state where the calling terminal device is connected to the called terminal device via the transmission device 2C. (G3FAX3) to the calling side terminal device (general terminal 1)
c).

In this case, since the non-sage is processed, problems due to differences in characteristics and speed between the calling terminal device and the called terminal device do not occur.

Since the message is retrieved only when the line of the called terminal device is free, the segment responsiveness is further improved.

[Embodiments of the invention]

FIG. 1 shows the constituent countries of a factor ξ transmission device employing a message transmission system according to an embodiment of the present invention. In the figure, 1C is a general terminal as a calling side terminal device, 2C
03F is an instant notification type facsimile transmission device equipped with a processing function for cross-machine matching, and 3 is a 03F as a called terminal device.
AX, 4c is a processing unit having the above-mentioned functions, which is provided in the transmission device 2C with a factor ξ.

Next, the operation will be explained using the flowchart shown in FIG.

First, the caller's general terminal 1C dials and calls the instant notification type facsimile transmission device 2C (Call 1).The facsimile transmission device 2C checks the line of the terminal 3, and if there is a free line, sends a message manually. (message l). The transmission device 2C stores and processes the message (speed conversion or G3FAX image conversion) and at the same time calls the called G3FAX terminal 3 (Call 2).
After confirming the IS signal and following a predetermined procedure, the message is transmitted to the called G3 FAX terminal 3 (Message 2). When the called G3 FAX terminal 3 successfully receives this message, it returns a message confirmation MCF. The facsimile transmission device 2C is in a state where the connection between the calling terminal device 1c and the called terminal device 3 is held, that is, the DI
When the S signal or the MCF signal is received, a false reception notification is immediately returned to the calling side general terminal 1C. Under the above operations,
The calling side general terminal IC can confirm reception by the called side G3 FAX terminal 3 in the same call at the same time as the sending operation.

In this way, the factor ξ lag transmission device 2C of the above embodiment processes the message (telegram) from the calling side general terminal 1c, such as speed conversion or G3 FAX image conversion, so the characteristics and speed between the terminals are The problem based on the difference is solved, and since the reception fake notification (response of DIS signal or MCF signal) from the called side G3 FAX terminal 3 is returned as is to the calling side general terminal IC within the same call, the reception The responsiveness of notifications is improved, and the arrival or non-delivery of a message can be confirmed on the spot at the time of transmission, reducing the sender's waiting time. Moreover, since the transmission device 2C only needs to have memory necessary for processing to match differences in characteristics and speed between terminals, the memory capacity can be reduced. Furthermore, messages are input only when the line of the terminal 3 is free, and are rejected when the line is not free, so that the waiting time can be further reduced.

Next, the flowchart in FIG. 2 will be explained in more detail. As is clear from this flowchart, the objective function as "immediate notification" is as follows ■.

This can be achieved by the following two methods.

■Add processing to reserve the line on the called side in order to send a message in the calling example and immediately return a notification within the same call.

(Case 1), when the number of calling side terminals is less than the number of called side lines.

As shown in part F of the flowchart in Fig. 2, compared to the conventional method (Fig. 5), this method does not include the ``called side line reservation processing'' between the ``incoming call processing'' and the ``message input processing j''. is inserted to prevent line idle waiting time from occurring before processing the call to the called party.With this operation, the message will be sent manually only when there is a free line, and not when there is no line. The wait time for the sender can be shortened by 1 minute.The reserved line is released after message output is completed.

(Case 2) When the number of calling side terminals times the number of called side ports vA.

In order to avoid a situation where there is a shortage of lines on the called side,
The "reservation/release processing of the called side line" shown in part F of the flowchart in the figure becomes unnecessary. However, in an actual system,
Such a case is impossible.

■The called party's "message reception complete" signal is treated as a provisional response with a "call response" signal or "message reception continuation confirmation" signal, and at this timing, a "reception notification" is sent to the "calling party".
to simulate. In other words, a false notice of reception is issued.

As shown in the flowchart in Figure 2, this method replaces the conventional method (Figure 5), which waits for the final confirmation (CMCF), re-calls, and returns a notification message, with a call response (DI).
S) or message continuation confirmation (MCF) is received, a false reception notification is issued. This results in the final li
The reception was completed without waiting for f-acknowledgment! ! senders and reduce waiting time.

In addition, in the above embodiment, the procedure for returning the "received fake notification" to the calling party's general terminal after "message 1" was shown, but if an idle line is returned before "message 1" and after "call 1", It is also possible to have a procedure for returning the information once it has been secured.Also, a plurality of "Received False Notification" signals may be provided corresponding to D I 513 or multiple MCF signals (MCF signals are returned in page units). Furthermore, although the called G3 FAX terminal in the above embodiment is a Group 3 facsimile device that complies with CCITT Recommendation T.4, it is also possible to use CCITT Recommendation T.2° which is a terminal connected to another telephone circuit switched network. Group 1 according to T, 3. Group 2 facsimile machine T,
may be an equivalent terminal (such as a personal computer or workstation) that follows the T.30 procedure;
, 30 procedures may be used.

〔Effect of the invention〕

As described above, according to the present invention, since a message is processed and transmitted, it is possible to achieve consistency due to differences in characteristics and speed between different models, reduce memory capacity, and moreover, it is possible to simulate reception within the same call. Since the notification is sent to the calling party, there is no need to make a call again, which improves the responsiveness of the reception notification.Furthermore, since the message is entered after the called terminal has a free line, the above responsiveness can be further improved. can.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the main parts of a facsimile transmission device that employs a message transmission method according to an embodiment of the present invention, FIG. 2 is a flowchart explaining its operation, and FIG. 3 is a diagram of a conventional circuit-switched facsimile FIG. 4 is a block diagram of main parts of a conventional store-and-forward type factor ξ-link transmission apparatus, and FIG. 5 is a flowchart showing the operation of the apparatus shown in FIG. 4. IC: general terminal (calling side terminal device), 2C: facsimile transmission device, 3: G3 FAX terminal (called side terminal device).

Claims (2)

[Claims] (1) A calling terminal device, a called terminal device, and a transmission device that processes a message from the calling terminal device and transmits it to the called terminal device, the called terminal device When the calling terminal device makes a call to the called terminal device, the transmission device sends a fake reception notification that the calling terminal device pretends that it has received a message from the calling terminal device. A message transmission method characterized in that it returns a message to (2) comprising a calling terminal device, a called terminal device, and a transmission device that processes a message from the calling terminal device and transmits the processed message to the called terminal device; Returns a notification to the calling terminal device from the transmission device during the same call when the calling terminal device calls the called terminal device. A message transmission system characterized in that the transmission device inputs a message from the calling terminal device when it is determined that the line of the called terminal device is idle.