JP3065095B2 - Facsimile storage and switching equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile storage and switching apparatus, and more particularly, to a facsimile storage and switching apparatus which enables designation of a destination terminal from a facsimile terminal connected via ISDN. About.

[Conventional technology]

Recently, with the spread of facsimile apparatuses, facsimile storage and exchange apparatuses that manage a plurality of facsimile terminals and provide various services have appeared.

Such a facsimile storage and exchange apparatus has a large-capacity storage means, and stores a message transmitted from a facsimile terminal for each destination, and stores a message for each destination when a reception request is received from the facsimile terminal of the destination. And send the sent messages all at once. When transmitting the stored message, the density of the original document and the paper size are changed in accordance with the function (communication function) of the destination facsimile terminal, and the transmission result of the message is transmitted as a transmission result report. It provides various communication services such as notifying terminals.

Further, a facsimile storage and switching device having a plurality of communication control units for simultaneously accessing a plurality of destinations and providing the communication service has been put to practical use. By executing facsimile communication between facsimile terminals connected to internal and external lines via a facsimile storage and exchange device, it is possible to reduce communication costs, improve communication efficiency, eliminate communication waiting time, and the like.

When a plurality of extensions are connected to the facsimile storage and exchange device, the following method is used when the extension is designated from an external facsimile terminal.

A method in which, when a call is received from a certain outside line, the call is output to an extension registered in advance for the outside line.

A method in which an external facsimile terminal user inputs a number designating an extension connected to the facsimile storage and exchange apparatus after the facsimile storage and exchange apparatus once accepts an incoming call.

A method in which a network between a facsimile storage and exchange device and a transmitting terminal sends out a number designating an extension after the facsimile storage and exchange device once accepts an incoming call.

The above method is a method generally used when performing communication using a PSTN line.

[Problems to be solved by the invention]

However, in such a conventional facsimile storage and exchange device, a method of specifying a plurality of extension facsimile terminals connected to the facsimile storage and exchange device from an external facsimile terminal connected via a PSTN line has been established. However, since there is no established method for specifying an extension facsimile terminal from an external facsimile terminal connected to an ISDN line in the same way as a PSTN line, an extension facsimile from a facsimile terminal connected to an ISDN line to a facsimile storage and switching device has not been established. A method for specifying a terminal is urgently needed.

That is, in the ISDN line that is rapidly spreading at present, it is possible to connect a plurality of terminals to one line. In this case, a destination signal and a destination subaddress in a signal called a SET UP signal are used. By returning a response corresponding to the information specified in the data, a specific terminal can be specified from a plurality of terminals. However, when one ISDN line is connected to the facsimile storage and exchange device, the only terminal connected to the ISDN line from the outside is the facsimile storage and exchange device.
Since a plurality of extension facsimile terminals are connected to the facsimile storage and exchange device, the plurality of terminals are substantially connected to the ISDN line via the facsimile storage and exchange device. In this case, conventionally, a method of specifying one of a plurality of facsimile terminals connected to the facsimile storage and exchange device from a user of an external terminal connected to the ISDN line has not been established in the facsimile storage and exchange device. Therefore, an external user who communicates with the facsimile storage and exchange apparatus via the ISDN line cannot fully utilize the functions of the facsimile storage and exchange apparatus.

Each invention of the present application is such that, when an ISDN line is connected to a facsimile storage and exchange device, the facsimile storage and exchange device can easily specify a plurality of extension facsimile terminals connected to the facsimile storage and exchange device from an external terminal of the ISDN line. Is what you do.

[Object of the invention]

Accordingly, the present invention compares destination terminal identification information received at the time of an incoming call from a facsimile terminal connected to an ISDN line with pre-registered extension terminal identification information, and determines a destination extension terminal based on the comparison result. By determining
A facsimile terminal connected to an ISDN line can easily identify a plurality of extension facsimile terminals connected to a facsimile storage and exchange device, and if there is no matching extension terminal as a result of comparison of terminal identification information, the center terminal is addressed. Incoming calls can be detected before the start of communication to detect erroneous calls and prevent the communication time from being extended for erroneous calls. It is an object of the present invention to provide a facsimile storage and switching device that improves efficiency.

[Means for solving the problem]

In order to achieve the above-mentioned object, the present invention provides a plurality of extensions and analog lines such as PSTN or ISDN.
An analog line control unit for accommodating a digital line such as the one for connecting and exchanging the extension and the analog line, a digital line control unit for exchanging the connection between the extension and the digital line, and connected via the analog line control unit G3 mode facsimile communication, etc., between an analog communication control unit that performs facsimile communication in G3 mode with internal / external line facsimile terminals and a facsimile terminal connected via the digital line control unit A digital communication control unit and a storage unit for registering terminal identification information such as an extension facsimile terminal input from the operation unit and a center terminal for managing a communication state, and storing various system information and image information received from the facsimile terminal. And exchanges connections between extensions and between extensions and analog and digital lines. A facsimile storage and exchange device that provides various services such as receiving image information from the internal / external line, temporarily storing the image information in a storage unit, and transmitting the image information to a predetermined destination of the registered internal line; The terminal identification information of the destination facsimile terminal received at the time of the incoming call from the facsimile terminal connected via the digital line control unit is compared with the terminal identification information registered in the storage unit, and the reception is performed based on the comparison result. Determining the destination facsimile terminal to which the image information is to be transmitted, and comparing the terminal identification information, when there is no matching destination facsimile terminal, receiving as an incoming call addressed to the center terminal. It is.

 Hereinafter, a specific description will be given based on examples.

 1 to 5 are views showing one embodiment of the present invention.

FIG. 1 is a diagram showing the configuration of the facsimile storage and exchange apparatus 1. The facsimile storage and exchange apparatus 1 includes a system control unit 2, an operation unit 3, an analog line control unit 4, a G3 communication control unit 5, a digital line control unit 6. , A G4 communication control unit 7 and a storage unit 8.

The system control unit 2 includes a CPU (Central Processing Uni
t), ROM (Read Only Memory) and RAM (Random Acce
ss Memory) and the like, and the ROM stores a basic program as the facsimile storage and exchange apparatus 1, a program for terminal identification information processing and communication control processing at the time of incoming call of each invention of the present application, and the like. The system control unit 2 controls each unit of the facsimile storage and exchange apparatus 1 based on a program in the ROM, executes a sequence as the facsimile storage and exchange apparatus 1, and executes terminal identification information processing and communication at the time of incoming call according to each invention of the present application. Execute control processing. System control unit 2
Is connected to a center terminal (not shown) via a line, and the center terminal monitors a communication state and the like performed by the facsimile storage and exchange apparatus 1.

The operation unit 3 includes various operation keys such as numeric keys and function keys. The operation unit 3 performs operations for registering data necessary for the system, outputting system information, and registering terminal identification information.

PSTN (public line network) lines LA1 to LAn and extensions LI1 to LIn are connected to the analog line control unit 4 as external lines, and facsimile terminals FI1 to FIN are connected to the extensions LI1 to LIn, and the PSTN lines LA1 to LAn are connected. Facsimile terminals FA1 to FAn
Is connected. G3 mode facsimile terminals are connected as the facsimile terminals FI1 to FIn and the facsimile terminals FA1 to FAn. The analog line control unit 4 exchanges the connection between the extensions LI1 to LIn and the PSTN lines LA1 to LAn,
~ Lin connection exchange and extension LI1 ~ LIn and PSTN line LA1
LALan to control the connection to the G3 communication control unit 5.

The G3 communication control unit (analog communication control unit) 5 has a plurality of facsimile communication control units. Each of the facsimile communication control units is connected to the extension lines LI1 to LIn via the analog line control unit 4. FIn and PSTN line LA1 ~ L
The G3 mode facsimile communication procedure is executed between the facsimile terminals FA1 to FAn connected to An to perform facsimile communication.

The digital line controller 6 is connected to an ISDN (Integrated Services Digital Communication Network) line LD as an external line, a facsimile terminal FD is connected to the ISDN line LD, and a G4 mode facsimile terminal is connected as the facsimile terminal FD. ing. The digital line control unit 6 controls connection of the ISDN line LD to the G4 communication control unit 7 and the like.

G4 communication control unit (digital communication control unit) 7 is an ISDN line LD
A facsimile communication is performed by executing a G4 mode facsimile communication procedure with the facsimile terminal FD connected via the.

The storage unit 8 is configured by a hard disk or the like, and operates under the control of the system control unit 2. The storage unit 8 stores the messages transmitted from the PSTN circuits LA1 to LAn and the extensions LI1 to LIn via the analog line control unit 5 and the ISDN line LD via the digital line control unit 6 and various services necessary for the service of the messages. In addition to storing information, the terminal identification information input from the operation unit 3 is stored.

 Next, the operation will be described.

The facsimile storage and exchange apparatus 1 performs various services such as facsimile terminals FI1 to FIN in response to service requests from the facsimile terminals FI1 to FIN connected to the extensions LI1 to LIn.
After receiving the message from the storage unit 8 and storing the message in the storage unit 8,
It provides a transfer service for transmitting a message to a specified destination, a broadcast service for transmitting a message to a plurality of destinations, and the like. Further, the facsimile storage and exchange apparatus 1 intercepts a message transmitted via an external line and transmits the message to the facsimile terminals FI1 to FIN at predetermined extensions LI1 to LIn. In the present embodiment, when a call is received from the facsimile terminal FD of the ISDN line LD, the IS
An extension facsimile terminal FI1 registered in the storage unit 8 stores the terminal identification information of the transmission destination transmitted according to the DN communication procedure.
The feature is that the transmission destination is determined based on the comparison result with the terminal identification information of .about.FIn. Hereinafter, the terminal identification information processing and the communication control processing will be described.

In the facsimile storage and switching apparatus 1, when the operator performs an input operation of terminal identification information of the extension facsimile terminals FI1 to FIN by a predetermined function key operation or the like on the operation unit 3, the input terminal identification information is stored in the storage unit. In FIG. 8, as shown in FIG. 2, they are registered as called numbers and called subaddresses based on ISDN rules, and these called numbers and called subaddresses are compared when receiving a call.

First, a protocol sequence when a call is received from the ISDN circuit LD is performed between the facsimile storage and switching apparatus 1 and the facsimile terminal FD via the ISDN line LD as shown in FIG.

Now, when a call is made from the facsimile terminal FD, the facsimile terminal FD sends a call setup message (SE) based on the D channel protocol (call control procedure) of the ISDN protocol.
T UP) is transmitted by the D channel. In the call setup message, the destination terminal is specified by the called number and the called subaddress, that is, the called number and the called address are processed in the facsimile storage and switching apparatus 1 as terminal identification information. Here, terminal identification information processing at the time of an incoming call in the facsimile storage and exchange apparatus 1 will be described with reference to the flowchart shown in FIG.

When there is an incoming call from the facsimile terminal FD via the ISDN line LD, the incoming call is notified to the system control unit 2 via the digital line control unit 6 and the G4 communication control unit 7 (step P).
1). The system control unit 2 determines that the incoming call is from the ISDN line LD (step P2). If the incoming call is not from the ISDN line LD, it determines that the incoming call is from the PSTN lines LA1 to LAn. 5 to execute G3 facsimile communication procedure
After receiving the facsimile information in the mode and storing it in the storage unit 8, the process is terminated (step P3). When a call is received from the ISDN line LD, the called number and called subaddress indicated in the call setting message are compared with those in the storage unit 8 shown in FIG. 2 (step P4). As a result of this comparison, if there is a match, the G4 communication control unit 7 accepts an incoming call by the D channel protocol shown in FIG. 3 (steps P5 and P6), and then a series of Bs shown in FIG. After executing the channel protocol and receiving the facsimile information in the G4 mode and storing it in the storage unit 8, the process ends (step P7).

On the other hand, if the destination number and the destination sub address received from the facsimile terminal FD are not registered in the storage unit 8, it is determined whether the request is a transmission request to the center terminal (step P8). If the request is a transmission request, it is accepted as an incoming call to the center terminal, and the process ends (step P9). If it is not a transmission request to the center terminal, it is determined whether it is a transmission request to a vacant terminal (step P10). If it is a transmission request to a vacant terminal, the presence or absence of vacant facsimile terminals FI1 to FIN is determined. Is determined (step P11), and the available facsimile terminals FI1 to
Accepts an incoming call to FIn and ends the process (step P1
2). If there is no transmission request to a vacant terminal and there is no vacant terminal, a message to the effect that the call is rejected is sent to the facsimile terminal FD, or no response is received and the continuation of communication is refused and processed. Ends (step P13).

The facsimile terminal connected to the ISDN line LD by the terminal identification information processing in the facsimile storage and exchange device 1 described above.
If the user of the FD knows the destination numbers and the destination sub-addresses of the extension facsimile terminals FI1 to FIN connected to the facsimile storage and switching apparatus 1, it is possible to easily specify the terminal to which transmission is desired. Also, if there is no extension whose received called number and called sub address match those registered in advance, the communication for the wrongly sent incoming call is immediately interrupted by rejecting the call or making no response. The communication time can be prevented from being wastefully used, and the communication efficiency can be improved.

Next, FIG. 5 shows a process for transmitting the received facsimile information to the extension facsimile terminals FI1 to FIN.

First, the facsimile information stored in the storage unit 8 when there is an extension LI1 to LIn that matches at the time of an incoming call is determined by referring to the registered terminal identification information of the extension facsimile terminals FI1 to FIN of the transmission destination (step S1). , S2), the facsimile information is transmitted to the corresponding extension facsimile terminals FI1 to FIN, and the process is terminated (step S3). On the other hand, the stored facsimile information without the matching extensions LI1 to LIn at the time of the incoming call determines the center terminal or the vacant facsimile terminal FI1 to FIN as the transmission destination (step S4), and the center terminal or the vacant extension facsimile terminal The facsimile information is transmitted to FI1 to FIN, and the process ends (step S3).

Therefore, even when there is no matching extension LI1-LIn, the center terminal and the vacant extension facsimile terminal FI1
If transmission to FIn is instructed, the facsimile storage and exchange apparatus 1 determines a center terminal that manages the facsimile storage and exchange apparatus 1 or a free facsimile terminal FI1 to FIn as a destination of the stored facsimile information. Therefore, the facsimile information transmitted from the facsimile terminal FD is reliably transferred from the facsimile storage and exchange device 1 to a destination terminal other than the designated extension, and the facsimile terminal
Facsimile storage and switching device 1 from FD via ISDN line LD
And the facsimile storage and switching apparatus 1 can be easily applied to an ISDN line.

〔effect〕

According to the present invention, destination terminal identification information received at the time of an incoming call from a facsimile terminal connected to an ISDN line is compared with pre-registered extension terminal identification information, and the destination extension terminal is determined based on the comparison result. The ISDN has been decided
A plurality of extension facsimile terminals connected to the facsimile storage and exchange device connected to the line can be easily identified, and if there is no matching extension terminal as a result of the comparison of the terminal identification information, the center terminal is addressed. Erroneous calls can be detected before communication starts, avoiding prolonging communication time for erroneous calls, and easily applying facsimile storage and switching equipment to ISDN lines. It is possible to improve the communication efficiency.

[Brief description of the drawings]

1 to 5 are diagrams showing an embodiment of a facsimile storage and exchange apparatus according to the present invention. FIG. 1 is a block diagram of the apparatus, and FIG. 2 is a terminal identification registered in a storage unit in FIG. Fig. 3 shows the contents of the information. Fig. 3 shows the ISDN executed by the G4 communication control unit in Fig. 1.
FIG. 4 is a flowchart showing a communication protocol sequence, FIG. 4 is a flowchart showing a terminal identification information processing program, and FIG. 5 is a flowchart showing a transmission processing program. DESCRIPTION OF SYMBOLS 1 ... Facsimile storage exchange apparatus, 2 ... System control part, 3 ... Operation part, 4 ... Analog line control part, 5 ... G3 communication control part, 6 ... Digital line control part, 7 ... G4 communication Control unit 8, storage unit, LI1 to LIn extension, LA1 to LAn PSTN line, LD ISDN line, FI1 to FIN, facsimile terminal, FA1 to FAn, facsimile terminal, FD, facsimile Terminal.

Claims (1)

(57) [Claims] 1. An extension line and an analog line such as PSTN or ISDN.
An analog line control unit for accommodating a digital line such as the one for connecting and exchanging the extension and the analog line, a digital line control unit for exchanging the connection between the extension and the digital line, and connected via the analog line control unit G3 mode facsimile communication, etc., between an analog communication control unit that performs facsimile communication in G3 mode with internal / external line facsimile terminals and a facsimile terminal connected via the digital line control unit A digital communication control unit, and a storage unit that registers terminal identification information such as an extension facsimile terminal or a center terminal that manages a communication state input from the operation unit, and stores various system information and a message received from the facsimile terminal. And exchange connections between extensions and between analog and digital lines. A facsimile storage and exchange device that provides various services such as receiving a message from the inside / outside line, temporarily storing the message in a storage unit, and transmitting the message to a predetermined destination of the registered inside line. The terminal identification information of the destination facsimile terminal received at the time of receiving a call from the facsimile terminal connected via the control unit is compared with the terminal identification information registered in the storage unit, and the received image information is determined based on the comparison result. Determining the destination facsimile terminal transmitting the facsimile, and as a result of comparing the terminal identification information, when there is no matching destination facsimile terminal, receiving as an incoming call addressed to the center terminal, facsimile storage and exchange apparatus.