JP2008078811A - Key telephone apparatus connected with facsimile apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a key telephone apparatus capable of easily selecting and calling an extension facsimile (FAX) or telephone corresponding to each of a plurality of outside line numbers in the case of call termination, without requiring additional services from a telephone company. <P>SOLUTION: A plurality of subscriber numbers are made into an outside line number from outside line number correspondence TA 10 connected with a switched network and a digital line. When a call from the outside line number is terminated on an outside line, a connection destination terminal is selectively called for the call termination corresponding to the outside line number. An outside line number table 30 is provided at the key telephone apparatus. In the outside line number table 30, an extension number of a facsimile or a telephone of the destination terminal is beforehand registered, along with a connection type (FAX, Telephone, and F/T switching) corresponding to the outside line number. During call termination, a received outside line number is detected and the outside line number table 30 is searched. A facsimile or a telephone is selected from the connection type corresponding to the outside line number. The telephone number of the connection destination terminal is searched and the call termination destination is called. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a button telephone apparatus in which a plurality of subscriber numbers are connected to an outside line, and a facsimile apparatus (hereinafter abbreviated as FAX) and a telephone are connected to a plurality of extension cordless handsets, and are connected to each other. In particular, the present invention relates to a button telephone device for individually calling each FAX and telephone.

  A conventional button telephone device is mainly used in a house, and a plurality of telephones can be connected to one telephone line as an extension cordless handset. When a FAX is connected to this extension cordless handset, the conventional key telephone apparatus receives a ringing call signal (16 Hz: hereinafter referred to as RG signal) for ringing the telephone bell from the outside line, and counts for 20 seconds. Measure within the time limit.

  An example is shown in FIG. When the button telephone apparatus 120 shown in the figure receives a CNG signal called a call tone from the FAX on the calling side during this time period, the button telephone apparatus 120 determines that it is a FAX incoming call, connects to the FAX 121, and does not receive the CNG signal. In this case, a so-called FAX / telephone switching (hereinafter referred to as F / T switching) means for ringing the extension telephone 122 as an incoming call from the telephone is employed.

  On the other hand, in recent years, for example, there is “i number service” (registered trademark) by Nippon Telegraph and Telephone Corporation (NTT), in which a plurality of subscriber numbers are provided by one cable line.

  As shown in FIG. 7, in the service, NTT installs an i-number compatible TA (terminal adapter) 110 on a home ISDN line, and a subscriber can have up to three telephone numbers. With this service, if you have a store in the house, one is connected to the store's FAX 121, the other is connected to the store's telephone 122, and the other is switched to F / T to distinguish between the FAX 123 or the phone 124 at home. can do.

  However, in this connection format, for example, when calling between the telephones 122 and 124 in the same house, since the call goes through the telephone company, a call charge is required.

  As an improvement measure, for example, the facsimile apparatus disclosed in JP-A-7-298023 (Patent Document 1) can be applied to a button telephone apparatus. A FAX usually has a telephone circuit and employs F / T switching means for incoming calls.

  This will be described with reference to FIG. This feature is that the i / number correspondence TA 210 installed by the telephone company has different RG signals for each of the three telephone numbers. In this patent document 1, the pulse length and pulse interval of the RG signal (16 Hz) are different. Signal, RGb signal, and RGc signal are employed. That is, the key telephone apparatus 220 selects and connects the FAX 121 when receiving the RGa signal, connects the telephone 122 when receiving the RGb signal, and transmits the FAX 123 by F / T switching when receiving the RGc signal. Alternatively, FAX 124 is selected and connected to the line of the external line number that received the signal.

  However, in this method, there is a service of a telephone company that calls an extension FAX or a telephone corresponding to a FAX, a telephone, and F / T switching corresponding to different RGa signals, RGb signals, and RGc signals for each of three telephone numbers. Necessary. The RGa signal, the RGb signal, and the RGc signal have different pulse lengths and pulse intervals of the RG signal (16 Hz) in this patent document 1, and are added to the “i number service” of the telephone company. Since this is a service, the cost is added. Further, when one button telephone device is large in scale and has not only three but also a large number of telephone numbers, and the connection destination terminal is set for each number, the types of different RG-signals increase, and the identification means Becomes complicated.

Japanese Patent Laid-Open No. 7-298023

  The problem to be solved is that it is difficult to select and call an extension FAX or telephone corresponding to each of a large number of external numbers when receiving a call without receiving an additional service from the telephone company.

  The present invention relates to a button telephone apparatus in which a plurality of subscriber numbers are connected to an outside line, and a facsimile apparatus (hereinafter abbreviated as FAX) and a telephone are connected to a plurality of extensions to interconnect each other. In order to make it easy to select and call an extension FAX or telephone corresponding to each external line number, the FAX of the connection destination terminal that selectively calls the incoming call corresponding to the external line number with the subscriber number as the external line number. Alternatively, an external line number table for registering in advance the telephone extension number together with the connection type corresponding to the external line number is provided, and when the incoming call is received, the received external line number is detected, the external line number table is searched, and the external line number is set. The main feature is that it has a call control means for selecting a FAX or a telephone from a corresponding connection type, retrieving a connection destination terminal number, and calling an incoming call destination.

  With this configuration, the FAX or telephone can be selected in accordance with the external number in the external number table, so that the FAX and the telephone can be easily and individually called, and the FAX and telephone can be switched by F / T switching with the same number. It is also possible to call for switching.

  The external line number is preferably three or more, and the connection type preferably includes three types of FAX, telephone, and FAX / telephone switching (F / T switching). Of course, any one connection type may be used. When the connection type is FAX, the call may be either non-ringing or ringing.

  Further, it is arranged between the key telephone apparatus and at least one digital line having the plurality of external line numbers, and detects an incoming external line number when there is an incoming call through the connected digital line, An incoming line communication channel is connected as an external line corresponding to the external line number of the key telephone, and an external line compatible adapter for calling the button telephone device from the external line can be additionally provided. Preferably, the external line connecting the button telephone device and the external line compatible adapter is a digital line, and the external line compatible adapter is built in the key telephone apparatus together with the external line. Further, the digital line can be ISDN and the Internet or ISDN or the Internet.

  The key telephone apparatus of the present invention uses a subscriber number as an outside line number, and the extension number of the FAX or telephone of the connection destination terminal that is selectively called for incoming calls corresponding to the outside line number, together with the connection type corresponding to the outside line number. Since an external number table to be registered in advance is provided, when an incoming call is received, the received external line number is detected, the external line number table is searched, a FAX or a telephone is selected from the connection type corresponding to the external line number, and the connection destination Since the terminal number can be searched and the called party can be called, the FAX and the telephone can be called individually, and the switching call between the FAX and the telephone can be facilitated by F / T switching with the same number. .

  In the present invention, the purpose of facilitating selecting and calling an extension FAX or a telephone corresponding to each of a number of external numbers when receiving a call is realized without receiving an additional service from the telephone company. That is, it is an external line in which the subscriber number is an external line number and the FAX or telephone extension number of the connection destination terminal that is selectively called for incoming calls corresponding to the external line number is registered in advance together with the connection type corresponding to the external line number. A number table is provided, and when an incoming call is received, the received external line number is detected, the external line number table is searched, a FAX or a telephone is selected from the connection type corresponding to the external line number, and the connection destination terminal number is searched and received. Is to call the destination.

  Embodiments will be described below with reference to the drawings. However, the drawings show only incoming calls or incoming calls related to the present invention, and illustration and description of functions essential for a button telephone device such as a calling function are not shown. It is omitted. In addition, for example, division or merging of functional blocks and replacement before and after the procedure are free as long as the gist and functional essence of the present invention are not impaired, and the following description does not limit the present invention. Absent. Further, the description of the abnormality process is omitted.

  A first embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is a block diagram showing an embodiment of a button telephone device 20 according to the present invention, in which one line of ISDN is connected to one side and a plurality of external lines are connected to the other side. 10 is shown.

  The outside line number corresponding TA 10 is, for example, the above-mentioned “i / number corresponding TA” in which three subscriber numbers are given to two communication lines of the basic interface in ISDN. The subscriber number may be assigned. Numeric numbers “1, 2,...” Are sequentially given to the end of each of the plurality of subscriber numbers, and the subscriber numbers are transmitted from the telephone company's exchange network when receiving a call. When the outside line number corresponding TA 10 receives the subscriber number of the connection destination by incoming from ISDN, it connects the communication line to a predetermined outside line. Here, the subscriber number is associated with the outside line number and expressed as a numeric number "1, 2, ...". For example, the subscriber number “0XX-XXXX-XXX1” shown in the figure is the incoming subscriber number “1” or the external line number “1” on the external line “1”. As shown in the figure, the NRG (no ringing) signal 1,300 Hz is used as a calling signal for the subscriber number “1”, and RG (ringing) for the other subscriber numbers “2, 3, 4”. ) Assume that a signal 16 Hz is transmitted.

  The key telephone device 20 associates the subscriber number “1” with the outside line number “1”. The same applies to “2” and below. As the connection type, “FAX, telephone, F / T switching, telephone” corresponds to the external line numbers “1, 2, 3, 4”. The key telephone apparatus 20 has an external line number table 30, and the connection type and connection destination terminal number corresponding to the external line number are registered in advance in the external line number table 30.

  FIG. 2 is an explanatory view showing an embodiment of the outside line number table 30. The outline of the incoming connection will be described with reference to FIG. For example, when there is an incoming call with the external line number “1”, the key telephone device 20 receives the external line number “1” and the NRG signal, so that it can be recognized that the connection destination is FAX. The key telephone apparatus 20 confirms that the external line number “1” is the connection type “FAX” in the external line number table 30 and makes a FAX call of the extension number # 121. When the external line number “2” and the RG signal are received, it can be recognized that the connection destination is a telephone, and therefore, the key telephone apparatus 20 has the external line number “2” in the external line number table 30 as the connection type “telephone”. And call the telephone numbers of extension numbers # 122 and # 125. When the external line number “3” and the RG signal are received, it can be recognized that the connection destination is a FAX or a telephone, so the button telephone device 20 has the external line number “3” in the external line number table 30 and the connection type “F / T”. It is confirmed that the call has been switched, and a FAX call to extension number # 123 or a telephone call to # 124 is performed depending on whether a CNG signal is received from the calling FAX.

  As shown in FIG. 2, multiple faxes or telephones can be assigned with each external line number. When a plurality of faxes are registered and an automatic incoming call is received, one free fax is selected and called. In the case of a telephone, you may select one available, but you can change the ringing sound for each external line number. With this configuration, when telephones corresponding to different external line numbers are arranged on the same floor, it is effective for identification. Different ringing sounds can be easily transmitted from the key telephone device 20 or set on the telephone side when the key telephone device 20 is electronic.

  Next, the button telephone device 20 will be described with reference to FIG. FIG. 3 is an explanatory diagram showing in block form an embodiment of the key telephone device 20.

  The button telephone apparatus 20 includes an external line IF (interface) 21, a call control unit 22, an extension FAXIF 23, an extension telephone IF 24, an RG signal detection unit 25, an NRG signal detection unit 26, a CNG signal detection unit 27, a voice guidance unit 28, and a memory. Part 29 is included. The memory unit 29 includes an outside line number table 30.

  The external line IF 21 is connected to the external line corresponding to the external line number described above, and the formed communication line is connected to the internal line via the call control unit 22. The call control unit 22 is a processor that controls functions for calling and receiving calls of the key telephone device 20 by program control using ROM and RAM, and is connected to each component by an internal bus, And control connections between extensions. The procedure will be described later with reference to a flowchart.

  The extension FAXIF 23 connects the FAX 121-, accepts a call from the FAX and notifies the call control unit 22 while selecting the designated FAX under the control of the call control unit 22 and connecting it to the designated communication line. Call. The extension telephone IF 24 connects the telephones 122 to to accept a call from the telephone and notify the call control unit 22 while selecting and calling a designated telephone under the control of the call control unit 22. The RG signal detection unit 25 detects a 15 Hz to 20 Hz signal received via an external line as a ringing call signal, and notifies the call control unit 22 of it. The NRG signal detection unit 26 detects the 1,300 Hz signal received via the outside line as a ringing paging signal and notifies the call control unit 22 of the signal.

  The CNG signal detection unit 27 detects a 1,100 Hz intermittent signal received via an external line as a CNG signal, and notifies the call control unit 22 of the detected signal. The CNG signal is a call tone of 1,100 Hz for notifying the callee of facsimile transmission when the caller FAX receives a response signal from the callee. The called FAX receives the CNG signal and returns a 2,100 Hz CED signal for approximately 3 seconds. The CED signal is a called station confirmation signal notifying that the receiving terminal is a FAX that can be normally received, and is a switching instruction signal for facsimile data transmission on the transmission side.

  The voice guidance unit 28 is controlled by the call control unit 22, and here, when an automatic response is made with the connection type of F / T switching, a manual FAX start instruction and a temporary waiting time during a call are made to the calling user. A message (OGM) including a notification is output by voice guidance. The memory unit 29 includes the external line number table 30 described above.

  Furthermore, although the key telephone apparatus 20 is provided with a call signal sending unit (not shown) for calling an extension, since the extension is a digital line, it is possible to perform ringing control with no control or ringing by a control signal. In the sending section on the analog line, for example, a non-ringing call signal of 1,300 Hz is sent for FAX, and a ringing calling signal of 16 Hz is sent to the telephone.

  Next, referring to FIGS. 1 to 3 together with FIGS. 4A and 4B, the main operation procedure when the key telephone apparatus is called will be described. 4A and 4B are explanatory diagrams showing, in a flowchart, one embodiment of a main operation procedure when a button telephone apparatus according to the present invention is called.

  First, when an incoming call is received from the telephone network, a call signal is sent to the outside line corresponding to the subscriber number by the outside line number corresponding TA 10.

  Accordingly, in the key telephone apparatus 20, the RG signal detection unit 25 or the NRG signal detection unit 26 receives the call signal via the external line IF 21, detects the signal type of the RG signal or the NRG signal (step S1), and performs call control. Notification to the unit 22. When the external line number is “1” and the call signal is an NRG signal (step S2 is NO), the call control unit 22 connects the connection type “FAX” of the external line number “1” received in the external line number table 30 (YES in step S3). ), The calling side is determined to be the F (facsimile) network, and a response signal is returned (step S4). Next, the call control unit 22 selects the destination terminal number # 121 from the incoming line number “1” in the external line number table 30 and makes a silent call, and starts time measurement by a monitoring timer (not shown) (procedure) S5). When the CNG signal detection unit 27 detects reception of a CNG signal transmitted from the calling side (NO in step S7) before the monitoring timer reaches the time limit (NO in step S6), the call control unit 22 sets the monitoring timer. The FAX 121 that is initialized and selected in step S5 is connected to the incoming call line, and the received CNG signal is transferred (step S8). Since the FAX 121 that has received the CNG signal transmits a CED signal, the key telephone device 20 transfers the CED signal to the calling side (step S9), and the FAX 121 performs a predetermined FAX data reception operation (step S10).

  On the other hand, when the procedure S2 is “YES” and the call signal is an RG signal, the call control unit 22 connects the connection type “F / T switching” of the outside line number “3” called in the outside line number table 30 (in step S21). If NO is confirmed, a response signal is returned to the calling side (step S22). Next, the call control unit 22 connects the voice guide unit 28 to the calling side, causes the voice guide unit 28 to send a voice guidance message to the calling user, and starts a timer (not shown). (Procedure S23). The voice message is, for example, “Please press the start button for fax. Please wait for a while”. When the CNG signal detection unit 27 detects reception of a CNG signal transmitted from the calling side (YES in step S25) before the timer reaches the time limit (NO in step S24), the call control unit 22 initializes the timer. And the destination terminal is determined to be FAX (step S26). Next, the call control unit 22 selects FAX # 123 from the external line number “3” in the external line number table 30 to make a silent call, and forwards the received CNG signal to the corresponding FAX 123 (step S27). Since the FAX 123 that has received the CNG signal transmits the CED signal, the key telephone apparatus 20 transfers it to the calling side (step S28). On the other hand, the FAX 121 performs a predetermined FAX data reception operation (step S29).

  If the procedure S24 is “YES” and the timer time limit is reached, the call control unit 22 initializes the timer and determines that the destination terminal is a telephone (procedure S31). Next, the call control unit 22 selects the telephone # 124 from the external line number “3” in the external line number table 30 (procedure S32), makes a ringing call, and returns a ringing tone (ringback tone) to the calling party (procedure). S33). Thereafter, the telephone connection operation (step S34) in which a normal call can be made by the response of the called side is completed.

  Since the incoming call to the external line number “2” is “YES”, if the above step S21 is “YES” and the external line number correspondence is the connection type “telephone” in the external line number table 30, the procedure proceeds to the above step S32, and the call control unit 22 In the outside line number table 30, both or one of the telephones # 122 and # 125 can be selected from the outside line number “2”.

  When an incoming call is made to the external line “4”, the connection type “telephone” corresponds to the external line number “4” in the external line number table 30, and the telephones 122, 124, and 125 can be called. The ringing call signal distinguished from the incoming call on the external line “2” allows the user to identify an incoming call on the external line “4”. Of course, in the key telephone device 20, since another extension can be called from the received extension telephone, the application improves usability of the key telephone device.

  Since such a configuration is adopted, when an incoming call is received, the received external line number is detected, the external line number table is searched, a FAX or a telephone is selected from the connection type corresponding to the external line number, and the connected terminal number is set. Since the called party can be called by searching, it is possible to easily call the FAX and the telephone individually, and it is also possible to easily call the FAX and the telephone by F / T switching with the same number. In addition, by using the outside line number table, it is possible to group the connected terminals corresponding to each outside line number, and it is also possible to easily select and configure the group structure, and use each ringing call together. You can improve your selfishness.

  A second embodiment of the present invention will be described with reference to FIG.

  In the embodiment shown in FIG. 5, the outside line number corresponding TA of the above-described embodiment 1 is used as the outside line corresponding adapter 40. The external line compatible adapter 40 includes a line IF 41, an external line distribution unit 42, and an external line number detection unit 43, and draws in an ISDN or / and Internet telephone line by a telephone company. The external line adapter 40 detects the telephone number (subscriber number / IP telephone number) registered with the telephone company of the telephone line received via the external line distribution unit 42 by the external line number detection unit 43, and the external line distribution unit 42 is analog. A line is formed and connected to the button telephone apparatus 20 described above. The functional configuration is the same as the above-described TA corresponding to the outside line number, and is the same as the TA corresponding to the i / number.

  Further, in this embodiment, it is effective when a user can handle a plurality of telephone numbers without receiving a special service of a telephone company by incorporating an external line compatible adapter in a button telephone apparatus.

  A third embodiment of the present invention will be described with reference to FIG.

  The interface between the external line compatible adapter and the key telephone device can be digitized. Accordingly, a telephone line corresponding to the external line number is not required, and it is effective for miniaturization particularly when the user installs the equipment. By incorporating the external line adapter in the button telephone device and incorporating it, it is effective for application to a wider range of telephone networks, for example, systems including IP phones and private branch exchange systems.

  In the present invention, when a large number of telephone numbers can be registered to a user by a telephone company using a small number of physical lines by digital communication, incoming calls to a plurality of FAXes and telephones connected to the extension of a button telephone device are performed. It is possible to diversify corresponding to connection types and telephone numbers registered in advance as an outside line number table. Therefore, the present invention is effective for application to an exchange system that connects to a telephone network including the Internet and collects connections to a plurality of communication terminals installed in a home or a small business.

It is explanatory drawing which showed one Embodiment of the button telephone apparatus by this invention by the system configuration | structure. Example 1 It is explanatory drawing which showed one Embodiment of the outside line number table of FIG. Example 1 It is explanatory drawing which showed one Embodiment of the button telephone apparatus of FIG. 1 with the block configuration. Example 1 It is explanatory drawing which showed one Embodiment of the partial procedure of the main operation | movement at the time of the incoming call of the button telephone apparatus of FIG. 1 with the flowchart. Example 1 It is explanatory drawing which showed one Embodiment of the main operation | movement procedure following FIG. 4A with the flowchart. Example 1 It is explanatory drawing which showed one Embodiment of the button telephone apparatus by this invention by the system configuration | structure. (Example 2) It is explanatory drawing which showed an example of the conventional button telephone apparatus in outline. It is explanatory drawing which showed an example of the conventional i number service with the block configuration. It is explanatory drawing which showed an example of the conventional button telephone apparatus by the system configuration.

Explanation of symbols

10 TA for external number
20 button telephone device 21 outside line IF
22 Call control unit 23 Extension FAXIF
24 Extension telephone IF
25 RG signal detection unit 26 NRG signal detection unit 27 CNG signal detection unit 28 Voice guidance unit 29 Memory unit 30 External number table

Claims (6)

  In a button telephone apparatus in which a plurality of subscriber numbers are connected to an outside line, and a facsimile apparatus (hereinafter abbreviated as FAX) and a telephone are connected to the plurality of extensions and interconnected, the subscriber number is an outside line number and the outside line is connected. An external line number table is provided to pre-register the FAX or telephone extension number of the connection destination terminal to be selectively called for incoming calls corresponding to the number, together with the connection type corresponding to the external line number. Call control means for detecting a number, searching the external line number table, selecting a FAX or a telephone from a connection type corresponding to the external line number, searching for a connected terminal number, and calling a destination Button telephone device.   2. The key telephone apparatus according to claim 1, wherein the connection type includes three types of FAX, telephone, and FAX / telephone switching.   2. The key telephone apparatus according to claim 1, wherein when there is an incoming call through said digital line, which is arranged between said key telephone apparatus and at least one digital line having a plurality of said external line numbers. An external line adapter for detecting the incoming external line number, connecting the incoming communication channel as an external line corresponding to the external line number of the key telephone, and calling the button telephone device from the external line is additionally provided. A button telephone device.   4. The key telephone apparatus according to claim 3, wherein the external line connecting the key telephone apparatus and the external line compatible adapter is a digital line.   5. The key telephone apparatus according to claim 3, wherein the external line compatible adapter is built in together with the external line.   6. The button telephone apparatus according to claim 3, wherein the digital line is ISDN and the Internet or ISDN or the Internet.

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