JPH03178243A - Storage and forward exchange system for facsimile - Google Patents

Abstract

PURPOSE:To minimize the delay in the distribution time of a stored text by monitoring the operating state of a facsimile terminal equipment and sending the text stored immediately when an idle state is confirmed to use a line between a PBX and a facsimile storage and forward exchange efficiently. CONSTITUTION:When communication between FAX301-1 and FAX302-2 is finished, the idle state of a line circuit 203-1 is monitored and transmission information is present in the FAX 301-1 or FAX302-2, a line state control table is reference and a terminal number and a management number of a destination FAX are transferred to a facsimile storage and forward exchange 100 via communication control equipments 205, 105. The facsimile storage and forward exchange 100 makes a call request to a terminal equipment subjected to transfer and a line designated by the management number, starts facsimile transmission and makes deleting request of a holding flag via the communication controllers 205, 105 to a PBX 200 at the point of time when transmission of all stored text information sets is finished. Thus, the line utilization rate between the PBX and the facsimile storage and forward exchange is improved, and the delay in the distribution time of all stored texts due to frequent production of invalid calls is avoided.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a facsimile store and forward system, and particularly to a facsimile store and forward system that controls call connections with a PBX in which a facsimile terminal is accommodated [Prior art] In the conventional facsimile store and forward system, when a message stored in a facsimile store and forward device is to be delivered to a destination facsimile terminal, the facsimile store and forward device issues a call connection request (dialing) to the PBX and calls the facsimile terminal. The facsimile terminal is connected and the message is delivered, but if the facsimile terminal is busy, the facsimile storage and forwarding device dials the PBX at predetermined intervals and sends a call connection request to the destination facsimile terminal. It was repeated.

[Problem to be solved by the invention]

In the conventional facsimile storage and forwarding method described above, when a message stored in a facsimile storage and forwarding device is delivered to a destination facsimile terminal, even if the facsimile terminal is busy, the message is sent from the facsimile storage and forwarding device to the destination facsimile terminal via PBX. Since call connection requests are made at predetermined intervals, if the destination facsimile terminal is frequently used, invalid calls due to busy will occur frequently, and the line between the PBX and the facsimile storage and forwarding device will be occupied during that time. Therefore, there is a drawback that the line usage rate becomes poor and the efficient use of the line is impaired.

Another disadvantage is that the frequent occurrence of invalid calls causes a delay in the delivery time of the entire stored message.

[Means to solve the problem]

The facsimile store-and-forward system of the present invention includes a PBX that transmits that a facsimile terminal specified by transmission request information is in an idle state, and a PBX that transmits the transmission request information and
and a facsimile storage/exchange device for transmitting the message accumulated by transmitting the empty status from the BX to the facsimile terminal.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a system configuration diagram of an embodiment of the present invention.

The facsimile storage and forwarding device 100 has a central processing unit 101.
．． Magnetic disk control device f102, 103° facsimile communication control device (104-1 to 104-n), PBX2
It is configured to include a communication control device 105 for data communication with 00, and ■/○ control devices 106 and 107. PBX2
00 is the time division switch 201. Line circuit 202 for facsimile storage and forwarding device interface. Line circuit 203 for facsimile terminal. It is configured to include a communication control device 205 for data communication with the facsimile storage and forwarding device and a central processing unit.

In FIG. 1, when facsimile terminal (hereinafter referred to as FAX) 301-1 and FAX 301-2 are communicating with each other via PBX 200, FAX 301-n
When trying to communicate to X301-1, FAX301-1
is in use and cannot communicate, and at this time P
BX200 is FAX301-1, 301-2, 301-
When a call is made from FAX 301-n, it recognizes that the destination FAX 301-1 is in use, and displays the dial number dialed from FAX 301-n, the calling party number, and FAX 301-n. and the facsimile storage and forwarding device 100 (for example, 104).
-1) is attached with a communication management number and transmitted to the facsimile storage and forwarding device 100 via the communication control device 205, and in the central processing unit 204 of the PBX 200, the destination address in the line status control table shown in FIG. Pending flag (
F 1 ag) is set to "1", the latest calling number and management number are registered, and the FAX 301-n is connected to the line circuit 104-1 of the facsimile storage and forwarding device 100.
01-N is stored in the facsimile storage and exchange device.

After mutual communication between FAX 301-1 and FAX 301-2 is completed, the empty state of line circuit 203-1 is monitored, and FAX 30
1-1 or 301-2, the terminal number and management number of the destination FAX are sent to the facsimile storage and forwarding device 100 via the communication control device 205. and transfer it. The facsimile storage and forwarding device 100 makes a call request to the line specified by the terminal and management number that received the transfer, starts facsimile transmission, and calls the PBX 200 when the transmission of the previous stored message information is completed. A request to erase the pending flag is made via the communication control devices 205 and 105.

〔Effect of the invention〕

As explained above, the present invention prevents frequent invalid calls by monitoring the usage status of a facsimile terminal at the PBX, and when it is confirmed that the facsimile terminal is idle, the facsimile storage and forwarding device immediately transmits the stored message. This has the effect of making it possible to use the line between the PBX and the facsimile storage and forwarding device efficiently, and also of minimizing the delay in the delivery time of stored messages.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing line state control and a table for explaining this embodiment. 100...Facsimile storage and exchange device, 101...Central processing unit, 102...Disk control device, 103...
...Disk device, 104+n...Communication control device (for facsimile), 105...Communication control device (for PBX), 106...I10 control device, 107...■/○
Equipment, 200...PBX (electronic exchange), 201.
...Time division switch, 202...Line circuit (for facsimile storage and forwarding device), 20B...For facsimile terminal), 204...Central processing unit, 205...Communication control device.

Claims (1)

[Scope of Claims] 1. A PBX that transmits that the facsimile terminal specified by the transmission request information is in an empty state; and a PBX that transmits the transmission request information and sends the message accumulated by the transmission of the empty state from the PBX. A facsimile storage and forwarding system comprising: a facsimile storage and forwarding device that transmits data to the facsimile terminal. 2. The facsimile storage and forwarding method according to claim 1, wherein the PBX suspends the empty state until a connection request is received from the facsimile storage and forwarding device.