JP2008092088A - Key telephone set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a key telephone set capable of informing a transfer destination about a transfer-requested extension number as a transfer source telephone number together with the number of a communication (opposite party) destination, in transferring a call using an extension telephone set. <P>SOLUTION: A main device 10 includes a caller number table 30 for recording information about telephone numbers of a communication (opposite party) destination and a transfer (request) source so as to correspond to extension lines. Upon receiving the dial number of the transfer destination and a transfer request from an extension telephone, a call control section 12 changes the number of the extension telephone requesting transfer into a transfer source number, and generates a caller number for transfer together with a communication destination number searched from the table 30 and transmits the generated and searched numbers as predetermined transfer information to an incoming call receiving terminal of the above number. If the dial number belongs to an outside telephone, a transfer source number having an extension number in addition to its own outside number is formed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a button telephone device having a caller number display function and capable of displaying a caller's telephone number at a called terminal, particularly a transfer source number when transferred.

  An example of a conventional button telephone device is disclosed in Japanese Patent Laid-Open No. 10-174134 (Patent Document 1). Here, when a call once received from the outside line is transferred to another telephone, the caller ID received from the outside line can be confirmed at the transfer destination. In this Patent Document 1, a sequence of signals exchanged between the key telephone main device and an exchange via an external line is described.

  Referring to FIG. 5, the main device 110 of the key telephone apparatus receives an incoming call from a subscriber line as an outside line, and when receiving an activation signal, returns a primary response signal and receives a caller ID. And a procedure for sending a reception completion signal at the normal reception. Therefore, when the key telephone main unit 110 receives the caller number, it simultaneously sends display data to the empty key telephones 121 to 122 and returns a reception completion signal to the outside line to receive a call (RG) signal. . The key telephone main device 110 sends incoming data to the key telephones 121 to 122 together with the received call signal. When the key telephone 121 responds, the ringing call is stopped and the transmitted data is erased in telephones other than the answering telephone.

  When the response key telephone 121 performs a hold operation and performs a transfer operation together with the destination number of the transfer destination button telephone 122, the key telephone main device 110 calls the key telephone 122, and the hold is released by the response. The source telephone 121 is disconnected, the destination telephone 122 is connected to the outside line, and the call is resumed.

  However, in this technique, the transfer source terminal and the called terminal are button telephones, and signal exchange between the main apparatus and the telephone is a digital line that can use a control line other than the telephone line. That is, no technology is disclosed when an analog line is connected to the key telephone device.

  Here, a technique for notifying and displaying a caller number from an ISDN line to an analog terminal is disclosed, for example, as a terminal adapter device in Japanese Patent Laid-Open No. 2002-223317 (Patent Document 2). This terminal adapter device terminates the ISDN line, and exchanges signals with the analog terminal through the same interface as the key telephone main device in Patent Document 1 described with reference to FIG. That is, the analog terminal has a procedure of receiving a caller number by returning a primary response signal when receiving an activation signal when a call is received from a connected analog line, and sending a reception completion signal upon normal reception thereof. .

  However, in the above-mentioned Patent Document 1, an analog terminal can be connected by applying the adapter device of Patent Document 2 to the button telephone device, but the person who requested the transfer after receiving the incoming call first, that is, the telephone of the transfer source Since the number is not transmitted to the transfer destination, the transfer source number is not displayed on the screen at the called terminal. Moreover, it is transfer between the key telephones which are the subunit | mobile_units, and it does not have the function to transfer to the switchboard outside a button telephone apparatus or an exchange apparatus via an external line.

  For example, Japanese Patent Application Laid-Open No. 09-28497 (Patent Document 3) proposes an exchange system that transmits a transfer source number between exchanges to a receiving side. This Patent Document 2 describes the exchange of signals and messages between exchanges forming an ISDN and information contained therein.

  With reference to FIG. 6, an outline of transmission of the transfer source number to the called terminal will be described.

  When the calling side telephone 221 calls the calling side exchange 211 with the transfer source telephone 222 as the destination, the calling side exchange 211 sends an IAM (initial address message) including the caller number to the transfer source exchange 212, and the transfer source exchange 212 notifies the caller number to the transfer source telephone 222 by an incoming call (SETUP) procedure. Next, when a transfer request destined for the destination telephone 223 is received from the transfer source telephone 222, the transfer source switch 212 sets the caller number of the telephone number of the caller telephone 221 to the telephone number of the transfer source telephone 222. The transfer information including the transfer source number is included in the IAM and transmitted to the terminating exchange 213. The receiving side switch 213 sends the caller number, the transfer source number, and the transfer information received from the transfer source switch 212 to the connection destination receiving side phone 223 by the incoming call procedure. Can be displayed on the screen.

  As described above, the transmission of the conventional transfer source number to the called terminal in Patent Document 3 is applied to an exchange connected to a communication network, and is transmitted in particular via ISDN. Therefore, a technology for transmitting a transfer source number to a called terminal when a transfer request is made by a small-sized button telephone apparatus installed in a home and using an old telephone is not included. Further, there is no disclosure about a technique for displaying a transfer source number at a transfer destination terminal when a transfer request is made at a communication terminal that constitutes an extension or a slave unit accommodated in the main device or the parent device as a control.

JP-A-10-174134 JP 2002-223317 A Japanese Patent Laid-Open No. 09-28497 (FIG. 4)

  The problem to be solved is that when the transfer function is executed by the key telephone device, the telephone number of the extension requested for transfer cannot be confirmed by the transfer destination terminal.

  The button telephone device of the present invention has a plurality of communication terminals that enable display of a caller ID, and at least one external line on one side and a plurality of extensions that connect the communication terminal on the other side. It is comprised with the main apparatus which switches and connects between an extension line and an extension line.

  Then, the present invention provides a caller number table and a control unit in the main device in order to make it possible to confirm the telephone number of the extension requested for transfer at the transfer destination terminal when the transfer function is executed by the button telephone device. The caller number table includes a recording area for a communication destination number and a transfer source number corresponding to each extension number, and the control unit uses the extension number requested for transfer as a transfer source number when transferring. A caller number is formed together with the transfer information and transmitted to the transfer destination.

  With such a configuration, a communication destination number is formed as a caller number obtained by a calling terminal at the time of an incoming call, and a dial number by a user operation at the time of a call. In this case, the destination number is notified to the called terminal together with the transfer source number, so that the called terminal can know the communication partner by the destination number and the transfer requester by the transfer source number. it can. Furthermore, the communication history can be confirmed by identifying whether the communication destination number is a caller number received from the caller side or a dial number sent to the callee side.

  When the transfer destination is an analog extension, the transfer information is transmitted when a primary response signal is received after the transfer destination is activated. When the transfer destination is a digital extension, the transfer information is transferred. It is possible to transmit simultaneously when calling a destination, or when the transfer destination is an ISDN external line, the transfer information can be included in a call connection request message and transmitted when setting a call to call the transfer destination. The transfer source number included in the call connection request message preferably includes the extension number of the transfer source in addition to one subscriber number assigned to the key telephone apparatus.

  The key telephone apparatus of the present invention is provided with a caller number table and a control unit in the main unit, the caller number table includes a recording area of a communication destination number and a transfer source number corresponding to each extension number, and the control unit includes: At the time of transfer, a caller ID is formed together with the communication destination number using the extension number requested to be transferred as a transfer source number and transmitted to the transfer destination in addition to the transfer information. Since the extension number of the transfer requester can be displayed together with the number, when the transfer is received, the telephone number of the extension requested to be transferred at the called terminal can be confirmed together with the communication destination telephone number as the call partner. is there.

  The main device is provided with a caller number table and a control unit for the purpose of enabling the telephone number of the extension requested to be transferred to be confirmed at the transfer destination terminal when the transfer function is executed by the button telephone device. The table includes a recording area for a communication destination number and a transfer source number corresponding to each extension number in communication, and the control unit uses the extension number requested for transfer as a transfer source number together with the communication destination number at the time of transfer. This was realized by forming a caller ID and sending it to the forwarding destination in addition to the forwarding information.

  Embodiments will be described below with reference to the drawings. In the embodiment, a telephone is used as a communication terminal. In the drawings, the part according to the present invention is the main part, and there is a function that is omitted even in a part essential for the function. The following description is a specific example, and the following description does not limit the present invention because the division / merging of functional blocks, replacement of procedures, and the like are free as long as the meaning and function of the present invention are satisfied.

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

  FIG. 1 is an explanatory diagram showing in block form one embodiment of a button telephone device according to the present invention. The illustrated button telephone apparatus includes a main apparatus 10, a FAX 21, a button telephone 22, and a general telephone 23 connected to the main apparatus 10 as an extension communication terminal. In this embodiment, the parent device and the child device in the key telephone device correspond to the main device and the extension.

  The main unit 10 switches and connects the extension lines, accommodates the subscriber line of the office exchange or the private branch exchange as an external line, and switches and connects between the external line and the internal line. The external line IF (interface) 11, call A control unit 12, an extension FAXIF 13, an extension telephone IF 14, a two-line telephone IF 15, and a memory unit 16 are included. The memory unit 16 has a caller number table 30.

  An exchange (not shown) is connected to the external line IF 11 via a subscriber line serving as an external line, and there are an analog line specification and an ISDN specification. For analog line specifications, for example, Patent Document 1 has a detailed description of signal exchange between a key telephone main unit and an exchange. The ISDN line is also well known, and a description of the procedure is omitted.

  The call control unit 12 includes a memory and a processor, and is connected to elements constituting the main device 10 to control functions of the main device 10 by program control. When transferring a call, the call control unit 12 performs a collation search for a communication destination number (caller number in the case of an incoming call) from the extension number requested to be transferred in the caller number table 30. The extension number of the transfer request extension that becomes the request source number is formed into the caller number included in the predetermined transfer data, and is inserted at a predetermined position of the message or signal to the transfer destination that is the transfer destination Send it out. The main procedure in this transfer will be described later with reference to a flowchart.

  The extension FAXIF 13 is connected to the FAX 21 via a digital extension, and when an incoming call is received, a ringing call is made and a caller ID is notified. The extension telephone IF 14 is connected to the key telephone 22 via a digital extension and, when receiving an incoming call, makes a ringing call and notifies a caller number. The two-wire telephone IF 15 is connected to an analog terminal such as a general telephone 23 or a FAX (not shown) having a telephone circuit via an analog extension, and, for example, according to an incoming call procedure to an information receiving terminal described in Patent Document 2 above. The caller ID is notified to the receiving terminal.

  The memory unit 16 includes various conventional storage areas in addition to the caller number table 30.

  The FAX 21 has an interface with the extension FAXIF 13 described above, and the button telephone 22 has an interface with the extension telephone IF 14 described above. The general telephone 23 is a telephone with a caller number display function having an interface with the above-described two-wire telephone IF15. For example, a button telephone or a rotary dial telephone including an adapter disclosed in Patent Document 2 can be targeted.

  One embodiment of the caller number table 30 is shown in FIG. As shown in the figure, the caller number table 30 has an area for recording an outside line representative number of a key telephone apparatus and recording communication destination information and transfer source information for each extension. These areas can be included in a conventional data recording area corresponding to an extension. The outside line representative number is a caller number that is sent to the connection destination when a call is made or transferred from the key telephone apparatus to the outside line. The communication destination number is a caller number received from the calling side in the case of an incoming call, and a dial number received from an extension in the case of a call.

  Next, referring to FIG. 1 and FIG. 2 together with FIG. 3, a call is made from the calling terminal having the subscriber number “0XX-XXXX-XXXX” to the key telephone 22 having the extension number “2022” via the external line. The procedure when the key telephone 22 requests call transfer will be described. In this case, the key telephone 22 becomes the transfer source terminal (22), and during the communication, the call transfer is executed with the general telephone 23 having the extension number "2023" as the transfer destination call terminal (23). On the other hand, the same applies to the case where the key telephone 22 with the extension number “2022” makes a call to the phone number “0XX-XXXX-XXXX” via the outside line and is requesting transfer to the extension number “2023”. is there.

  First, it is assumed that the calling terminal and the transfer source terminal (22) are forming a communication path via the main device (10) and are talking. In this state, the sender number table 30 stores the sender number “0XX-XXXX-XXXX” received from the outside line in the communication destination number area of the extension number “2022”.

  When the transfer source terminal (22) transmits a transfer command including the transfer destination dial number “2023” by the operation of the transfer requesting user, the main device (10) receives the transfer command and receives the transfer command. And the received dial number “2023” is recorded in the transfer destination information area of the table 30, and an activation signal is sent to the called terminal (23) having the extension number “2023”. The start signal is a ringing paging signal, for example, an on / off signal of 0.5 seconds at 15 Hz. Since the main device (10) receives a primary response indicating that it can be normally received in response to the start signal, the extension number of the transfer source is set to the transfer source number “2022,” and the communication destination number “0XX-XXXX-XXXX” is transmitted. The party number is formed and sent to the called terminal (23). Therefore, the incoming call terminal (23) displays the received caller number and transfer source number on the screen and provides the incoming call user with visual information.

  Subsequently, since the main device (10) sends a normal ringing signal for ringing to the called terminal (23), a response is returned by the off-hook operation of the called user. In response to the response, the main device (10) records the number “0XX-XXXX-XXXX” in the communication destination number area corresponding to the extension number “2023” and the number “2022” in the transfer source number area in response to the response. Is transferred to the transfer source terminal (22). Upon receiving the response, the transfer source terminal (22) can cancel the call path hold and respond to the call.

  At the transfer source terminal (22), regardless of whether there is a call, the on-hook disconnection of the transfer requesting user disconnects the call path between the transfer source terminal (22) and the main device (10), and the transfer source terminal ( 22) is released. At the same time, the main device (10) forms a communication path with the caller terminal on hold, connects the call path with the callee terminal (23) being formed, and connects the caller terminal and the callee terminal ( 23) is enabled and the procedure is terminated.

  Next, referring to FIGS. 1 to 3 together with FIG. 4, the transfer source number transmission when the transfer command is received from the extension telephone of the main apparatus 10 connected to the calling terminal via the ISDN line via the external line is performed. The procedure will be described.

  First, it is assumed that the telephone having the extension number “2022” is talking to the calling terminal having the telephone number “0XX-XXXX-XXXX” via the external line. In the table 30, the telephone number “0XX -XXXX-XXXX” during the call is recorded in the communication destination number area.

  In the main apparatus 10, when the call control unit 12 receives a transfer command including the transfer destination dial number by the operation of the transfer requesting user from the telephone having the extension number "2022" (step S1), the call control unit 12 puts the line on the call on hold. The transfer destination dial number is recorded in the transfer destination number area corresponding to the extension number “2022” as the transfer source in the table 30 (step S2).

  When the connected dial number is an extension (YES in step S3), the call control unit 12 forms the self extension number as a transfer source number (step S4). Next, when the connection destination is a key telephone via the extension telephone IF14 (NO in step S5), the call control unit 12 includes the caller number and the transfer source number in the incoming call message as in the ISDN line, and calls Along with the signal is sent to the destination button telephone (step S6), and the procedure is terminated.

  When the above step S5 is “YES” and the connection destination is, for example, an analog line with the number “2023”, the call control unit 12 sets the extension number “2023” of the connection destination from the area of the extension number “2022” that becomes the transfer source. The communication destination number “0XX-XXXX-XXXX” and the transfer source number “2022” are recorded in the corresponding area. Next, the call control unit 12 sends a non-ring activation signal to the general telephone 23 of the called terminal via the two-wire telephone IF 15 (step S11), and accepts the primary response from the called terminal (step S12). Wait no).

  The call control unit 12 that has received the primary response with this procedure S12 being “YES”, sends the communication destination number and the transfer source number to the general telephone 23 of the called terminal that is the connection destination extension via the two-line analog line. The data is converted into a modem signal and transmitted (step S13). Accordingly, the general telephone 23 can display the received communication number and transfer source number on the screen. Subsequently, the call control unit 12 sends a normal call signal that notifies the general telephone 23 of an incoming call notification by ringing (step S14), and ends the procedure.

  Further, when the above step S3 is “NO” and the transfer destination is an external line ISDN (procedure S21), the call control unit 12 adds the extension number to the external line representative number of the table 30 to form the transfer source number (step S22). Then, the communication destination number and the transfer source number are formed in a predetermined call setting message, and the external line is activated and transmitted (step S23).

  In the above description, the transfer procedure when an outside line is called as an ISDN line has been shown. However, both the case of an analog line and the case where the calling extension terminal requests transfer can be similarly realized. Further, although the extension terminal has been described with only the FAX and the telephone set shown, it can include an information terminal having a communication function. It can also be realized when a FAX having a telephone circuit is connected to an extension analog line. Although one representative number is designated for transfer to an outside line, an outside line number designated as a transfer source number may be assigned to each extension. The extension-corresponding caller number table may be incorporated into a conventional table that assigns extension ports, extension classes, etc., and records the terminal status at the time of outgoing or incoming calls.

  Furthermore, the communication destination number in the table may be an area that distinguishes between a caller number for an incoming call and a dial number for an outgoing call. In this case, the communication history can be confirmed by simultaneously transmitting the distinction.

  Since such a configuration is adopted, when the key telephone device transfers the call from the extension telephone during a call without changing various conventional telephones that can display the caller ID, the extension number of the extension telephone requested to be transferred is set. It can be formed in the transfer source number and sent to the transfer connection destination together with the communication destination number as the communication partner. Therefore, when receiving the call, the transfer destination call terminal can confirm the transfer source and the communication partner with a number before answering.

  Record the transfer requesting terminal and its communication partner terminal when transferring a call in the caller number table corresponding to the extension's accommodating terminal as the transfer source and communication destination. Since the terminal extension number is formed in the transfer source number and transmitted to the communication partner along with the communication destination number, the transfer receiving side can confirm the communication partner and the transfer source. Further, the communication history can be confirmed by discriminating whether the communication partner number is the caller number received from the calling side or the dialing number of the calling party for the transfer requester. Therefore, the present invention can be applied not only to a key telephone apparatus but also to a private branch exchange that accommodates a communication terminal on an extension.

It is explanatory drawing which showed one Embodiment of the button telephone apparatus by this invention with the block. Example 1 It is explanatory drawing which showed one Embodiment of the sender number table of FIG. Example 1 It is explanatory drawing which showed one Embodiment of the transfer procedure by the button telephone apparatus of FIG. 1 with the sequence chart. Example 1 It is explanatory drawing which showed one Embodiment of the transfer procedure by the main apparatus of the key telephone apparatus of FIG. 1 with the flowchart. Example 1 It is explanatory drawing which showed one Embodiment of the conventional button telephone apparatus with the block. It is explanatory drawing which showed in block form one Embodiment of the transfer origin number notification by the conventional transfer call.

Explanation of symbols

10 Main unit 11 Outside IF
12 Call control unit 13 Extension FAXIF
14 Extension telephone IF
15 2-wire telephone IF
16 Memory unit 21 FAX
22 button telephone 23 general telephone 30 (caller number) table

Claims (6)

  A plurality of communication terminals capable of displaying a caller ID, and having at least one external line on one side and a plurality of extensions connecting the communication terminal on the other side, between the external line / extension line and the internal line In a key telephone apparatus configured with a main apparatus to be switched and connected, a caller number table and a control unit are provided in the main apparatus, and the caller number table includes a communication destination number and a transfer source number corresponding to each extension number. A recording area is provided, and at the time of transfer, the control unit forms a caller number together with the communication destination number using the extension number requested for transfer as a transfer source number, adds the transfer information to the transfer information, and transmits to the transfer destination A button telephone device.   2. The key telephone apparatus according to claim 1, wherein the communication destination number is a caller number obtained by a calling terminal when an incoming call is made, and a dial number by a user operation when making a call. A button telephone device.   2. The button telephone apparatus according to claim 1, wherein when the transfer destination is an analog extension, the transfer information is transmitted when a primary response signal is received after the transfer destination is activated.   2. The key telephone apparatus according to claim 1, wherein when the transfer destination is a digital extension, the transfer information is transmitted simultaneously when the transfer destination is called.   2. The button telephone apparatus according to claim 1, wherein when the transfer destination is an ISDN external line, the transfer information is transmitted by being included in a call connection request message at the time of call setting for calling the transfer destination. .   6. The button telephone apparatus according to claim 5, wherein the transfer source number included in the transfer information includes a transfer source extension number added to one subscriber number assigned to the button telephone apparatus. .

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