JPH02312340A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To improve reliability for a device by automatically transmitting data from an outgoing terminal to an incoming terminal when communication is completed even that the incoming terminal is performing the communication and is in busy when the outgoing terminal transmits a call setting message. CONSTITUTION:When an incoming terminal side receives the incoming of the call setting message from an outgoing terminal side during performing a communication operation, the call issuing number of the call setting message is stored in a memory part 4, and after call setting is performed for the call number with a call setting part 8 at a time when the communication operation is completed, the incoming terminal side receives the data from the outgoing terminal side. Therefore, it is possible to prevent the data from the outgoing side from not being transmitted to the incoming terminal side indefinitely, which improves the reliability for the device.

Description

[Detailed Description of the Invention] [Summary] Regarding a facsimile device, it is an object of the present invention to provide a facsimile device capable of transmitting data to a called terminal when communication is completed even if the called terminal is busy. In a facsimile machine that has a D channel control section that performs call control, a B channel control section that performs facsimile procedure control and image data transfer control, and an interface section that interfaces with a predetermined communication network, A memory section that stores the calling number in the call setting message sent to the calling terminal side and a call setting section that performs call setting on the calling terminal side when the called terminal finishes communication operation are provided. If the calling terminal side receives a call setting message during communication, the calling number is stored in the memory section, and when the communication operation is completed, the call is set up for the calling number, and the calling terminal side It was configured to receive image data.

[Industrial application fields] The present invention relates to a facsimile device.

Since April 1988, the integrated service digital communications network (IS
It is said that the current public switched telephone network (PSTN) will be completely replaced by ISD'N in the future. This 15DN has added various services that were not available in the conventional PSTN, and in order to deliver these services to users, terminals are required to be equipped with functions that meet the needs of the users.

For example, when a calling terminal sends a call setup message,
Even if the called terminal is busy during communication, it is desirable that the calling terminal automatically transmits data to the called terminal when the communication ends.

[Prior Art] Examples of conventional facsimile devices compatible with summer SDN include the following.

In other words, a conventional facsimile machine has a reading section for reading data, a recording section for recording data, a compression/decompression section for compressing and restoring data, and a B channel control section for controlling facsimile procedures and image data transfer. ,
It is equipped with a D channel control unit that performs call control, and an 15DN interface unit that interfaces with ISDNx having B1 channel, B2 channel, and D channel, and either the B1 channel or the 82 channel is being used by the own terminal. , either do not return any response, that is, release by timeout, or <t
``Release completed'' message was sent to the calling terminal.

In such a case, the calling terminal usually makes a re-call after a certain predetermined time. If the called terminal is still communicating when the call is made again, the calling terminal makes the call again after a certain predetermined time. Such an operation is repeated a predetermined number of times, and after a predetermined number of times, a non-delivery notification is sent to the user, and the call processing is terminated.

[Problems to be Solved by the Invention] However, in such conventional facsimile devices, if the communication operation time of the called terminal is long, the predetermined number of calls will be completed and the data will not be sent from the calling terminal. Sometimes the message ended up not being sent. In addition, the communication operation ends once during a predetermined waiting time (for example, 3 minutes), and immediately after that, an incoming call is received from another calling terminal, and data is not sent from the calling terminal for a long time. Something happened. As a result, there was a problem that the reliability of the device could not be improved.

The present invention has been made in view of such conventional problems, and provides a facsimile device that can transmit data to a calling terminal when communication is completed even if the called terminal is busy. It is intended to.

[Means for solving problems].

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

In FIG. 1, 7 is a D-channel control unit that performs call control, 5 is a B-channel control unit that performs facsimile procedure control and both data transfer control, and 4 is an originator in a call setup message sent to the called terminal. A memory unit that stores the call number, 10 an interface unit that interfaces with a predetermined communication network 9, and 8 a call setting unit that sets up a call to the calling terminal when the called terminal has completed the communication operation. It is.

[Operation] In the present invention, when the called terminal side receives a call setting message from the calling terminal side during communication operation, the calling number in the call setting message is stored in the memory section.

Then, when the communication operation is completed, the call setting section performs call setting for the calling number. Thereafter, the called terminal side receives data from the calling terminal side.

Therefore, the data on the calling terminal side will not be transmitted to the called terminal side forever, and the reliability of the device can be further improved.

[Example] Embodiments of the present invention will be described below based on the drawings.

FIGS. 2 to 4 are diagrams showing an embodiment of the present invention.

In FIG. 2, 1 is a reading section, and the reading section 1 reads data. 2 is a recording section, and the recording section 2 records data. 3 is a compression/decompression section, and the compression/decompression section 3 compresses and decompresses data.

Reference numeral 4 denotes a memory unit, and when a call setting message is sent from the calling terminal side to the called terminal side, the memory unit 4 stores information in the call setting message when the called terminal side is busy communicating. The call number is stored based on the program of the D channel control unit 7, which includes a processor and a program.

5 is a B channel control section, and the B channel control section 5 is
Performs facsimile procedure control and image data transfer control.

Reference numeral 7 denotes a D channel control section, which has a processor and a program as described above, and the D channel control section 7 performs call control. Further, the D channel control unit 7 has a call setting unit 8, and the call setting unit 8 has a program, and when the communication operation of the called terminal ends, the D channel control unit 7 The processor and program detect this, and the above-mentioned processor and program of the D channel control section 7 start the above-mentioned program of the call setting section 8, and as a result, the call is set to the calling terminal side, and the calling terminal and Since the connection is established, data from the calling party is received.

9 is a predetermined communication network, namely the Integrated Services Digital Network (ISDN), and 15DN9 has two B channels (Bl channel and B2 channel) and one D channel.

10 is an interface section;
performs multiplexing and demultiplexing of B and D channels, and interfaces with I5DN9.

Next, the operation will be explained.

FIG. 3 is a diagram illustrating the exchange of messages between the calling terminal and the called terminal.

In FIG. 3, first, the calling terminal side sends a call setting message to the called terminal side, and receives a call setting acceptance message. When the called terminal side receives a call setting message during communication, it stores the calling number in the call setting message in the memory section 4. Then, the called terminal side sends a release completion message to the calling terminal side. In this way, the communication operation ends once.

When the communication operation is completed on the called terminal side, the call setting section 8 in the D channel control section 7 sends a call setting message to the calling terminal side, and receives a call setting reception message. The calling terminal side sends a response message using the call setup message and receives a response confirmation message. The called terminal side receives the response message and receives image data from the calling terminal side.

When the called terminal side receives the image data, it sends a disconnection message to the calling terminal side, and the calling terminal side uses the disconnection message to send a release message to the called terminal side. The called terminal side sends a release completion message to the calling terminal side using a release message, and the communication ends.

In FIG. 4, the following messages are exchanged between the calling terminal and the called terminal.

That is, the transport connection request (T
CR), Tranbort Connection Accept (TCA)
), Command session start (C8S), Response session start position (R8SP), Command session change control (C8CC), Response session change control position (RSC)
CP), Command Document Capability List (
CDCL), Response Document Cavability List Position (RDCLP), Command Document Start (CDS), Command Document User Information (CDU I), Command Document End (CDE), Response Document End Position (RDEP), Command Session Change control (CS CC), response session change control positive (R8CCP), command session end (C8E), and response session end positive (RS E P) messages are sent between the calling terminal and the called terminal. given and received between.

That is, image data is sent from the calling terminal side to the called terminal side by transport connection setting, session connection setting, session reversal, and document connection setting, and polling is performed by document connection termination, session reversal, and session connection termination. The procedure ends.

In this way, when the called terminal receives a call setting message during communication operation, the calling number is stored in the memory unit 4, and when the communication operation is completed, the call setting message is sent to the calling terminal. Since the image data is sent to the calling terminal and then received from the calling terminal, there is no possibility that data will not be sent from the calling terminal forever. Note that the calling terminal must register in advance whether the called terminal is equipped with this function, and when it receives a busy release completion message from the called terminal equipped with this function, the polling transmission reservation is made. state.

[Effects of the Invention] As explained above, according to the present invention, even if the called terminal is busy, data can be sent from the calling terminal to the called terminal as soon as the communication ends. I can do it. As a result, the reliability of the device can be further improved.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the principle of the present invention, Fig. 2 is a block diagram showing an embodiment of the invention, Fig. 3 is an explanatory diagram showing sending and receiving of messages, and Fig. 4 is an explanatory diagram showing the polling procedure. . In the figure, 1...reading section, 2...recording section, 3...compressing/decompressing section, 4...memory section, 5...B channel control section, 7...D channel control section , 8...Call setting section, 9...l5DN (communication network), 10...Interface section.

Claims (1)

[Claims] A D channel control unit (7) that performs call control, a B channel control unit (5) that performs facsimile procedure control and image data transfer control, and an interface unit (10) that interfaces with a predetermined communication network (9). In a facsimile machine having , a memory unit (4) that stores the calling number in the call setting message sent to the called terminal side.
A call setting section (8) is provided for setting up a call on the calling terminal side when the called terminal ends the communication operation, and when the called terminal side receives a call setting message during the communication operation, the memory section (4) A facsimile device characterized in that a calling number is stored in the device, and when the communication operation is completed, a call is set up for the calling number, and image data is received from the calling terminal side. .