Abstract:
ABSTRACT OF THE DISCLOSURE A communication equipment having multiple communication functions, a method of selecting a communication route among multiple communication routes that are available between the sending equipment and receiving equipment, and a computer program product in memory for implementing the communication route selecting process. In route selection mode, a list of communication routes that are available between the sending equipment and receiving equipment is produced and displayed. The user selects a route and associated communication function on the displayed list, and proceeds to communication.

Description:
[0001]    This application is based on patent application No. 9-330832 filed in Japan, the contents of which is hereby incorporated by reference.  
         BACKGROUND OF THE INVENTION  
         [0002]    1. Field of the Invention  
           [0003]    The present invention relates to a communication equipment having multiple communication functions, a communication route selection method, and a computer program product in memory for selecting a communication route.  
           [0004]    2. Description of the Prior Art  
           [0005]    When information is sent to the receiving party, it is generally sent depending on the communication function equipped on the communication equipment of the receiving party. For example, in case the receiving equipment has the facsimile function (will be termed “FAX function” hereinafter), information is sent by use of its FAX function. In case the receiving equipment has the electronic mail function (will be termed “E-mail function” hereinafter), information is sent by use of its E-mail function. In case the receiving equipment has the Internet FAX function, information is sent by use of its Internet FAX function. In case the sending equipment and receiving equipment are connected through a LAN (local area network), information can be sent by use of the LAN.  
           [0006]    Some communication equipments developed recently have multiple communication functions among the above-mentioned FAX function, E-mail function, Internet FAX function, and LAN connecting function. In the case of communication between these multi-functional communication equipment, the sending party is allowed to send information by choosing a proper communication function of the receiving equipment, instead of installing plural communication equipments having different functions.  
           [0007]    These multi-functional communication equipment allow the sending party to choose a communication function depending on individual communication purposes. For example, for low-cost communication, the expensive FAX communication can be avoided. For retaining the high-quality image transfer, the LAN connecting function or E-mail function can be used. In the latter case, however, communication based on E-mail cannot be achieved unless the receiving person operates the computer to open the mail box. In contrast, the FAX communication produces a print of information on the receiving equipment, and it can be handed to the receiving person. Accordingly, the FAX communication can possibly be faster practically than the E-mail communication, and the former may be chosen occasionally.  
           [0008]    The Internet FAX function will be explained. In sending information by using FAX, the telephone line fee is charged, and therefore the communication fee depends on the distance between a sending party and a receiving party. A conceivable manner of low-cost communication to a distant receiving party is the use of the Internet, and it is called “Internet FAX function”.  
           [0009]    It is assumed that the sending party has FAX unit F 1 , intermediate FAX units F 2  and F 3  are connected through the Internet, and the receiving party has FAX unit F 4 , of which F 1  and F 2  are located in town A, and F 3  and F 4  are located in remote town B. In this situation, information is sent from F 1  to F 2  in the same town over the telephone line, it is sent from F 2  to F 3  through the Internet, and it is sent from F 3  to F 4  in the same town over the telephone line. This information sending manner enables a low communication fee based on the use of the Internet for long-distance communication between town A and town B.  
           [0010]    Among other information sending manners, the sending party can connect its FAX F 1  directly to the Internet, or the sending party can connect its FAX F 1  to the LAN which has the connection with the Internet.  
           [0011]    Although multi-functional communication units allow the sending party to choose the best communication function based on the judgement of situation as explained above, the conventionally available multi-functional communication equipment do not inform the sending party of what communication function has the receiving equipment, or as to whether the receiving equipment has a communication function that matches with the function of the self equipment, causing the sending party to be troubled in choosing a communication function or to send information by using a function that is not the best.  
         SUMMARY OF THE INVENTION  
         [0012]    A prime object of the present invention is to provide an innovative communication equipment capable of sending information from the sending equipment to the receiving equipment based on the selection of a proper communication route from among multiple available communication routes.  
           [0013]    Another object of the present invention is to provide an innovative communication equipment capable of sending information from the sending equipment to the receiving equipment based on the finding of multiple communication routes that are available between these equipments and the selection of a communication route among the found communication routes.  
           [0014]    Still another object of the present invention is to provide a method of selecting a communication route among multiple communication routes that are available between the sending equipment and receiving equipment.  
           [0015]    Still another object of the present invention is to provide a computer program product in memory for implementing the process of selecting a communication route among multiple communication routes that are available between the sending equipment and receiving equipment. 
       
    
    
       [0016]    Other objects of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.  
       BRIEF DESCRIPTION OF THE DRAWINGS  
       [0017]    [0017]FIG. 1 is a block diagram showing a first example of the communication network;  
         [0018]    [0018]FIG. 2 is a front view of the operation panel of the facsimile unit as a communication equipment;  
         [0019]    FIGS.  3 ( a ),  3 ( b ) and  3 ( c ) are diagrams showing examples of display on the LCD display screen, listing available communication means;  
         [0020]    [0020]FIG. 4 is a diagram showing an example of display on the LCD display screen at the selection of a communication route;  
         [0021]    [0021]FIG. 5 is a diagram showing an example of display on the LCD display screen at the entry of the receiving equipment identification number;  
         [0022]    [0022]FIG. 6 is a flowchart showing the processing carried out by the CPU of the sending equipment for selecting a communication route;  
         [0023]    [0023]FIG. 7 is a flowchart showing the processing carried out by the CPU of the receiving equipment for sending a list of available communication means;  
         [0024]    [0024]FIG. 8 is a block diagram showing a second example of the communication network;  
         [0025]    [0025]FIG. 9 is a diagram showing an example of the FAX sending dialog box which is displayed on the display screen of the sending at the call of the FAX sending menu;  
         [0026]    [0026]FIG. 10( a ) and FIG. 10( b ) are diagrams showing an example of display on the LCD display screen, listing available communication means;  
         [0027]    [0027]FIG. 11 is a table showing examples of communication means that are available between the sending equipment and receiving equipment;  
         [0028]    [0028]FIG. 12 is a diagram showing an example of display on the LCD display screen at the selection of a communication route;  
         [0029]    [0029]FIG. 13 is a flowchart showing the processing carried out by the CPU of the sending equipment for selecting a communication route;  
         [0030]    [0030]FIG. 14 is a flowchart showing the details of the processing of making a list of available communication means;  
         [0031]    [0031]FIG. 15 is a flowchart showing the processing carried out by the CPU of the receiving equipment for sending a list of available communication means; and  
         [0032]    [0032]FIG. 16 is a flowchart showing the processing of transferring document data. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0033]    Embodiments of the present invention will be explained.  
       First Embodiment  
       [0034]    [0034]FIG. 1 shows a communication network pertinent to the first embodiment of this invention. The network includes equipment A which is a facsimile (FAX) equipment  10 A and unit B which is a FAX unit  10 B. These FAX units  10 A and  10 B are connected to the telephone line  23  through communication controller  18 , and also connected through their interface adapters  15  to Ethernets, e.g., LANs,  24  and  25 , respectively, with these Ethernets  24  and  25  being connected through mail servers  20 A and  20 B, respectively, to the Internet  27 .  
         [0035]    The following explains the sending of document data from the FAX unit  10 A to the FAX unit  10 B.  
         [0036]    Each of the FAX units  10 A and  10 B, which is controlled by a CPU  11 , has a RAM  12  for temporarily storing document data of a source document which has been read and document data which has been received, a ROM  13  for storing control programs, an image reader  14  which reads the text in an optical manner, an interface adapter  15  which connects the FAX unit to the Ethernet, an operation panel  16 , a printer  17 , and a communication controller  18  which connects the FAX unit to the telephone line.  
         [0037]    Among these functional devices, the image reader  14 , printer  17 , interface adapter  15 , communication controller  18 , and mail servers  20 A and  20 B are known of their structures and functions, and detailed explanation thereof will be omitted.  
         [0038]    [0038]FIG. 2 shows the operation panel  30  of the sending FAX unit  10 A. The operation panel  30  has a FAX mode select key  31   a , a copy mode select key  31   b , a print mode select key  31   c , a scan mode select key  31   d , an E-mail select key  31   e , and an LCD display screen  23  which displays the selected mode and the state of the unit and allows data input based on the laminated touch-panel.  
         [0039]    Among the operational modes selected by the mode selection keys of the FAX unit  10 A, the copy mode is to read the source text and make a copy of it, the print mode is to print data received by facsimile and stored in the memory, and the scan mode is to send document data which has been read on the sending FAX unit  10 A to the personal computer and the scan mode is operable when reception program initiated in response to the detection of document data from the FAX is stored in the personal computer. These operational modes selected with the mode selection keys, however, do not relate directly to the communication route selection which will be explained later.  
         [0040]    The operation panel  30  further includes a ten-key set  33  which is used to enter numerals and also enter alphabetic characters in the E-mail mode. The ten-key set  33  is designed to allow the entry of a comma, space and symbols, in addition to the alpha-numeric characters and symbols * and # that are labeled on the key tops. For example, when the key “1” is hit once, numeral “1” is entered; when it is hit twice, character “A” is entered; when it is hit three times, “B” is entered; when it is hit four times, “C” is entered; and when it is hit gain, the initial condition is restored to enter “1”. The entered character is displayed on the LCD display screen  32 . When the key “*” is hit once, symbol, “*” is entered; when it is hit twice, symbol “@” is entered; when it is hit three times, symbol “&amp;” is entered; and when it is hit four times, symbol “¥” is entered. When the key “#” is hit once, symbol “#” is entered; and when it is hit twice, a space is entered. The entered symbol is displayed on the LCD display screen  32 .  
         [0041]    The operation panel  30  further includes a start key  34  which is used to start the operation of the FAX unit  10 A, a stop key  35  which is used to terminate the operation, and a communication route selection mode key  36  which is used to bring the unit into the mode of selecting a image data transfer route.  
         [0042]    The receiving FAX unit  10 B may have the same operation panel, or may include mode selection keys for other operational modes.  
         [0043]    FIGS.  3 ( a ),  3 ( b ) and  3 ( c ) show displays on the LCD display screen  32  when the communication route has been selected by the operation of the communication route selection mode key  36  on the operation panel  30 .  
         [0044]    [0044]FIG. 3( a ) shows the display of communication means that are available for the receiving equipment B, FIG. 3( b ) shows the display of communication means that are available for the sending equipment A, and FIG. 3( c ) shows the display of the result of arrangement, indicating that FAX and E-mail are available as common means of communication from the sending equipment A to the receiving equipment B.  
         [0045]    [0045]FIG. 4 shows the display on the LCD display screen  32  at the selection of a communication route, prompting the selection of a communication route for the case of the available communication means shown in FIG. 3( c ). When the user touches a screen position on the line, i.e., telephone line  23  in this example, connecting between FAX-A  10 A and FAX-B  10 B, or a screen position in a block of facility, i.e., mail server  20 B in this example, the touched position is detected by the touch-panel on the LCD display screen  32 , and the corresponding communication route is selected.  
         [0046]    [0046]FIG. 5 shows the display on the LCD display screen  32  when the unit is in the initial state or after the FAX mode key  31   a  has been depressed. The display includes a FAX number field  32   a , a cursor  32   b  in the field  32   a , cursor moving keys  32   c  and  32   d , and a cancel key  32   e  which is used to delete the numeral at the cursor position. When a FAX number is entered with the ten-key set  33 , each digit is entered and displayed at the position of the cursor  32   b.    
         [0047]    Next, the processes implemented by the CPU  11  of FIG. 1 for the selection of a communication route and the sending and reception of document data will be explained on the flowcharts of FIG. 6 and FIG. 7.  
         [0048]    [0048]FIG. 6 is a flowchart showing the processing of communication route selection and document data transfer implemented by the CPU  11  of the sending equipment A. It is detected whether the communication route selection mode which is invoked with the communication route selection mode key  36  is selected or not (step P 1 ). When the communication route selection mode is selected, there is provided a list of communication means available for the sending equipment A as shown in FIG. 3( b ) (step P 2 ).  
         [0049]    Next, the user is prompted to enter the receiving equipment identification number. On the LCD display screen  32  of the operation panel  30 , with the display of FIG. 5 appearing in response to the setting of the communication route selection mode, the user enters the FAX number of the receiving party with the ten-key set  33  (step P 3 ). The entered FAX number is dialed automatically, and the sending equipment (FAX-A) and receiving equipment (FAX-B) are linked through the telephone line.  
         [0050]    The CPU  11  issues a status request to the receiving equipment B in order to examine the state of the receiving equipment B, i.e., it requests the transfer of a list of communication means that are available for the receiving equipment B as shown in FIG. 3( a ) (step P 4 ). The CPU  11  waits for the transfer of the list of available communication means from the receiving equipment B (step P 5 ).  
         [0051]    On receiving the list of available communication means from the receiving equipment B, a communication means selection list (refer to FIG. 3( c )) is produced from the list of communication means available at the sending equipment A (refer to FIG. 3( b )) and the list of communication means available for the receiving equipment B (refer to FIG. 3( a )) (step P 6 ), and displays a graphic guidance for communication route selection (refer to FIG. 4) on the LCD display screen  32  (step P 7 ). In response to the user&#39;s operation on the LCD display screen  32 , the communication route and communication means are determined (step P 8 ).  
         [0052]    The sending equipment A reads the source document and sends document data to the receiving equipment B by using the selected communication means over the selected communication route, i.e., by using FAX or E-mail based on the selection and determination of communication route and means (steps P 9 , P 10  and P 11 ), and terminates the operation.  
         [0053]    [0053]FIG. 7 is a flowchart showing the transmitting of available communication means list and reception of document data implemented by the receiving equipment B. It is judged whether document data is received by FAX or E-mail or not (step P 21 ). In case of E-mail reception, the processing of E-mail reception is implemented (step P 27 ), and the operation is terminated.  
         [0054]    In case of FAX reception in step P 21 , the processing of telephone reception is implemented (step P 22 ), and subsequently it is judged whether a status request from the sending equipment A is received or not (step P 23 ). On receiving the status request, a list of available communication means is produced and the list is transmitted to the sending equipment A (steps P 24  and P 25 ), and the operation is terminated.  
         [0055]    Otherwise, in response to the negation of the status request judgement in step P 23 , the processing of FAX reception is implemented (step P 26 ), and the operation is terminated.  
       Second Embodiment  
       [0056]    Next, the second embodiment of this invention will be explained.  
         [0057]    [0057]FIG. 8 shows a communication network including equipment A which is a personal computer  50 A and equipment B which is a personal computer  50 B. These computers  50 A and  50 B are connected to the telephone line  93  through their modems  60 A and  60 B, and also connected through their interface adapters  55  to Ethernets, e.g., LANS, 94  and  95 , respectively, with these Ethernets  94  and  95  being connected through mail servers  80 A and  80 B, respectively, to the Internet  97 . The network further includes a facsimile unit (FAX- 1 )  71  and another facsimile unit (FAX- 2 )  72  both connected to the telephone line  93  and also connected to Ethernets  94  and  95 , respectively.  
         [0058]    The following explains the transfer of data from the equipment A, i.e., personal computer  50 A, to the equipment B, i.e., personal computer  50 B.  
         [0059]    Each of the personal computers  50 A and  50 B, which is controlled by a CPU  51 , has a RAM  52  for temporarily storing document data of a source document which has been read and document data which has been received, a VRAM  53  for storing control programs, a keyboard  54 , an interface adapter  55 , a floppy disk drive (FDD)  56 , a hard disk drive (HDD)  57 , a display  58 , and a communication controller  59  which connects the personal computer to the telephone line.  
         [0060]    Among these functional devices, the personal computers  50 A and  50 B, FAX units  71  and  72 , and mail servers  80 A and  80 B are known of their structures and functions, and detailed explanation thereof will be omitted.  
         [0061]    [0061]FIG. 9 shows the FAX sending dialog box which is displayed on the display screen  58  of the personal computer  50 A in response to the call of the FAX sending menu from an application program running currently on the equipment A. The user enters the FAX number of the receiving equipment B in the field  101 . By clicking the OK key  102  with the mouse device, the data specified in the range field  105  is sent to the equipment B. The user can point the cancel key  103  and click the mouse device to turn off the FAX sending dialog box and return to the application program.  
         [0062]    The dialog box further includes a communication route selection mode key  104 . By clicking the key  104  with the mouse device, the unit enters the mode for selecting a communication route between the sending equipment A, i.e., personal computer  50 A, and the receiving equipment B, i.e., personal computer  50 B, with lists of available communication routes being displayed.  
         [0063]    [0063]FIG. 10( a ) shows a display of communication routes available for the sending equipment A, and FIG. 10( b ) shows a display of communication routes available for the receiving equipment B.  
         [0064]    [0064]FIG. 11 is a list of communication means available as common for communication between the sending equipment A and the receiving equipment B resulting from the tables of FIGS.  10 ( a ) and  10 ( b ). On the table of FIG. 11, column “address- 1 ” indicates the address of the first destination of document data from the sending equipment A, and column “address- 2 ” indicates the address of the final destination of document data. An IP address means an Internet Protocol address.  
         [0065]    [0065]FIG. 12 shows a display on the LCD display screen  105  when communication route selection mode key  104  is depressed, and this example is for the case where the communication means listed in FIG. 11 are available. The user selects a communication route by sequentially clicking the mouse device while pointing a line or a facility (FAX  1 , FAX  2 , modem A, modem B, or mail server in this example) located between the sending equipment A and the receiving equipment B.  
         [0066]    Next, the processes implemented by the CPU  51  of FIG. 8 for the selection of a communication route and the transfer of image data will be explained on the flowcharts of FIG. 13 through FIG. 16.  
         [0067]    [0067]FIG. 13 is a flowchart showing the processing of communication route selection and document data transferring implemented by the CPU  51  of the sending equipment A.  
         [0068]    It is detected whether the communication route selection mode key is pointed and clicked in the dialog box in the display or not (step P 31 ). When the route selection mode is selected, there is provided a list of communication means available for the sending equipment A as shown in FIG. 10( a ) (step P 32 ). This listing process will be explained in detail later on the flowchart of FIG. 14.  
         [0069]    Subsequently, the communication route selection dialog box is displayed to prompt the user to enter the FAX number of the receiving equipment B in the FAX number field. The user operates the ten-key set to enter the destination FAX number (step P 33 ). The entered FAX number is dialed automatically, and the sending equipment and receiving equipment are linked through the telephone line.  
         [0070]    The CPU  51  issues a status request to the receiving equipment B in order to examine the state of the receiving equipment B, i.e., it requests the transfer of a list of communication means that are available for the receiving equipment (step P 34 ). The CPU  51  waits for the transfer of the list of available communication means from the receiving equipment B (step P 35 ).  
         [0071]    On receiving the list of available communication means from the receiving equipment B, a communication means selection list (refer to FIG. 11) is produced from the list of communication means available for the sending equipment A (refer to FIG. 10( a )) and the list of communication means available for the receiving equipment B (refer to FIG. 10( b )) (step P 36 ), and a graphic guidance for the communication route selection (refer to FIG. 12) is displayed on the display screen  105  (step P 37 ).  
         [0072]    In response to the user&#39;s operation on the display, the communication route and communication means are determined (step P 38 ).  
         [0073]    The sending equipment A reads the source document, and sends document data to the receiving equipment B by using the selected communication means over the selected communication route, i.e., by using the modem A, FAX- 1  or mail server based on the selection and determination of communication route and means (steps P 39 , P 40 , P 41  and P 42 ), and terminates the operation.  
         [0074]    Next, the process of step P 40  on the flowchart of FIG. 13 for sending document data to the receiving equipment B via the determined communication route and modem A will be explained. The process is carried out based on the modem communication program stored on the hard disk of the sending equipment A, with the destination FAX number being set to the program.  
         [0075]    In case the communication route is from equipment A→modem A→modem B and to equipment B, the FAX number of modem B is used on the first row of the address- 1  column in the table of FIG. 11 to carry out the FAX communication.  
         [0076]    In case the communication route is from equipment A→modem A→FAX  2  and to equipment B, the FAX number of FAX  2  is used on the second row of the address- 1  column and the sub-address (address- 2 ) for the transfer of document data from the FAX  2  to the equipment B in the table of FIG. 11 to carry out the FAX communication. Document data is transferred from the FAX  2  to the equipment B over the network, and therefore the sub-address (address- 2 ) is the IP address (Internet Protocol address) of the equipment B.  
         [0077]    In case the communication route is from equipment A→modem A→FAX  2  and to equipment B via E-mail, the FAX number of FAX  2  is used on the third row of the address- 1  column and the sub-address (address- 2 ) for the transfer of document data from the FAX  2  to the equipment B in the table of FIG. 11 to carry out the FAX communication. Document data is transferred from the FAX  2  to the equipment B via E-mail, and therefore the sub-address (address- 2 ) is the E-mail address of the equipment B.  
         [0078]    Next, the process of step P 41  on the flowchart of FIG. 13 for sending document data to the receiving equipment B via the determined communication route and FAX  1  will be explained. The process is carried out based on the program for the FAX  1  stored on the hard disk of the sending equipment A.  
         [0079]    In case the communication route is from equipment A→FAX  1 →modem B and to equipment B, the FAX number of modem B is used on the fourth row of the address- 1  column in the table of FIG. 11 to carry out the FAX transfer.  
         [0080]    In case the communication route is from equipment A→FAX  1 →FAX  2  and to equipment B, the FAX number of FAX  2  is used on the fifth row of the address- 1  column and the sub-address (address- 2 ) for the transfer of document data from the FAX  2  to the equipment B in the table of FIG. 11 to carry out the FAX transfer. Document data is transferred from the FAX  2  to the equipment B over the network, and therefore the sub-address (address- 2 ) is the IP address (Internet Protocol address) of the equipment B.  
         [0081]    In case the communication route is from equipment A→FAX  1 →FAX  2  and to equipment B via E-mail, the FAX number of FAX  2  is used on the sixth row of the address- 1  column and the sub-address (address- 2 ) for the transfer of document data from the FAX  2  to the equipment B in the table of FIG. 11 to carryout the FAX transfer. Document data is transferred from the FAX  2  to the equipment B via E-mail, and therefore the sub-address (address- 2 ) is the E-mail address of the equipment B.  
         [0082]    Next, the process of step P 42  on the flowchart of FIG. 13 for sending document data to the receiving equipment B via the determined communication route and communication means of E-mail will be explained. The process is carried out based on the program for E-mail stored on the hard disk of the sending equipment A, with the receiving equipment number being set to the E-mail server.  
         [0083]    The destination mail address is determined with reference to the E-mail address on the seventh row of the address- 1  column in the table of FIG. 11. The determined E-mail address is set to the program for E-mail, and image data is transferred to the specified address of the E-mail server. The user of the receiving equipment B will be notified of the delivery of an E-mail, and receive the document data from the E-mail server.  
         [0084]    [0084]FIG. 14 is a flowchart showing the subroutine for making a list of available communication means shown by step P 32  on the flowchart of FIG. 13.  
         [0085]    The sending equipment A issue status requests to all equipments connected to the network (refer to FIG. 8, Ethernet  94 ) which is connected with the sending equipment A. Specifically, it requests the transfer of lists of communication means available for these equipments (step P 45 ), and waits for the reception of the lists (step P 46 ). On receiving the lists of available communication means from all equipments in the network, the sending equipment A adds its own available communication means to the received lists and provides the lists of communication means that are available for the transfer operation of the equipment A (step P 47 ), and returns to the main routine.  
         [0086]    [0086]FIG. 15 is a flowchart showing the processing for the transfer of available communication means list and document data reception implemented by the CPU  51  of the receiving equipment B which is a personal computer  50 B shown in FIG. 8. Initially, the CPU  51  receives a telephone call from a sending equipment (step P 51 ), and judges whether it is a status request or not (step P 52 ).  
         [0087]    On receiving the status request, it issues status requests to all equipments connected to the network (Ethernet  95 ) which is connected with the sending equipment B (step P 53 ), and waits for the reception of status information (step P 54 ). On receiving status information from all equipments, there is provided a list of communication means available on these equipments in the network and a list of communication means available for the self equipment B (step P 55 ). The list is transmitted to the sending equipment A (step P 56 ), and the operation is terminated.  
         [0088]    Otherwise, in response to the negation of the status request judgement in step P 52 , the processing of FAX reception is implemented (step P 57 ), and the operation is terminated.  
         [0089]    [0089]FIG. 16 is a flowchart showing the document data transfer process implemented by the CPU of the FAX  2  in the network shown in FIG. 8. The CPU judges whether or not the FAX  2  has received document data and information indicative of the destination from the modem A or FAX  1  (step P 61 ). On receiving document data and destination information, it judges whether the destination is an E-mail address or IP address (Internet Protocol address) of a receiving personal computer (step P 62 ).  
         [0090]    When the destination information is an E-mail address in step P 62 , the E-mail address is set (step P 63 ), the data format is converted so that the document data can be processed by the receiving equipment B (step P 64 ), the converted document data is attached to an E-mail (step P 65 ), and finally the E-mail is sent to the specified E-mail address (step P 66 ).  
         [0091]    In case the judgement step P 62  reveals that the destination information is an IP address, the IP address is set (step P 67 ), the document data is sent to the specified IP address based on the file transfer protocol (FTP) (step P 66 ), and the operation is terminated. The receiving equipment B is running under the operating system (OS) which can deal with the file transfer protocol (FTP), and it receives the document data and automatically stores the data onto the hard disk of the personal computer.  
         [0092]    Although a list of communication means that are available for communication between the sending equipment and receiving equipment are transacted by using FAX in the above explanation, the list may be transacted via other means, e.g., E-mail.  
         [0093]    Although the communication route selection control program is stored in the hard disk of the personal computer in the above explanation of the second embodiment, this program may be stored on a floppy disk and loaded with the floppy disk drive of the personal computer into the main memory at the time of processing. This variant scheme is made possible by the provision of a floppy disk drive  56  on the personal computer  50 A and the preparation of a floppy disk  56   f  as shown in FIG. 8.  
         [0094]    The floppy disk for storing the communication route selection control program may be replaced with a CD-ROM, with a CD-ROM drive being provided on the personal computer obviously.  
         [0095]    Although in the foregoing first and second embodiments, the sending equipment inquires of the receiving equipment the available communication means and produces a graphic communication route guidance (shown in FIG. 4 and FIG. 12) at each time of communication, an alternative scheme is to memorize the reply of inquiry and produces the guidance from the stored record for successive communications within a certain period of time. Inquiry of available communication means may be made at certain events, e.g., when the equipment is turned on, or on expiration of a certain time length after turn-on of the equipment, thereby to update the information of available communication means of the receiving equipment.  
         [0096]    A conceivable preset destination equipment is an equipment which is registered with the allotment of a one-touch dial number of the usual facsimile unit.  
         [0097]    According to the present invention arranged as described above, the user is allowed to choose a communication means and communication route among multiple available means and routes depending on the content of communication, communication speed and communication cost, whereby the user is prevented from being troubled in choosing a communication function or sending information by using a function that is not the best.