JP5077524B2 - Telephone system having temporary direct call reception function - Google Patents

Description

  The present invention is capable of receiving a caller's telephone number (hereinafter also referred to as a calling number), and in a key telephone system or PBX (private branch exchange) that accommodates a plurality of extension telephones, a specific extension corresponding to the calling number. The present invention relates to a telephone system that can directly call a telephone.

  In the case of a key telephone system or PBX introduced in the company, if there is an incoming call from the outside line, one of the extension telephones responds, the caller temporarily confirms the person in charge who wants to talk, and the call is temporarily held. The method of transferring to the person in charge is common. However, this method has a problem that it takes time until the caller is actually connected to the person in charge who wants to talk, and the person who receives the call spends wasted time.

  In addition, it is possible to reduce wasted time by assigning a dial-in number to each extension telephone and calling the person in charge who wants to make a call from the beginning by using the dial-in function. Basic charges are added, which is uneconomical.

  Therefore, there is a case in which a calling telephone number notification function is used to register a telephone (one or more) to be directly received with respect to the calling number in advance, and a target person in charge is called from the beginning. (For example, Patent Document 1 and Patent Document 2).

Japanese Patent Laid-Open No. 06-276563 JP 2002-33831 A

  When the caller's phone number is the customer's phone number and the phone to be directly received does not need to call the other phone (s) at the customer's person in charge (one or more) as in Patent Document 1 and Patent Document 2 The phone that directly receives calls to the calling number is always fixed, and registering the phone that receives calls directly to the calling number in advance is advantageous for improving the telephone response. When an outside line is sent and the other party leaves you and asks the answerer to call back, or when the other party records a message to answer the answering machine while you are away, It is not a good idea to pre-register a phone that will receive a call to the calling number because it may be temporary that a specific person does not need to answer. In addition, there is also a problem of waste of memory to register the calling number on a daily basis call does not come opponent.

In addition, as in Patent Document 1 and Patent Document 2, if the caller's telephone number is the business partner's telephone number, and the telephone to be directly received is the business partner's person in charge (one or more), one of the applicable There is no problem in answering with the phone,
For example, when a person in charge makes an outside call to the same person and the other person leaves the desk and asks the answerer to call back, or the other person calls the answering machine in an absence state When a message is recorded, a system in which a plurality of telephones are received has a problem that a person in charge different from the intention of the other party responds.

Furthermore, as in Patent Document 1 and Patent Document 2, when the caller's telephone number is the business partner's telephone number and the telephone that directly receives the call is the person in charge of the business partner, priorities are assigned to the telephones that receive the call directly. It is possible to set more than one, and when the person in charge is on a call, it is advantageous for other people such as sub-responsors to respond to the smooth operation,
For example, when you send an outside line from here and the other party leaves you and asks the person to call you back, or when you record a message that the other party calls you back to your answering machine, If you cannot answer a call while you are on the phone or away from your desk, there is a waste of time to make a call again from the other party or here even if you answer with another phone, and a wasteful work that the respondent contacts you with a message. There is a problem of end up.

In order to solve the above-mentioned problems, the present invention is a button telephone system comprising a key telephone main unit accommodating one or more external lines and a plurality of extensions, and a plurality of button telephones connected to the extensions. The telephone main device includes an incoming call waiting list registration means for registering correspondence between a telephone number transmitted when the button telephone makes an outside line outgoing call and an extension number of the button telephone by key operation of the telephone, and the telephone number and the extension. An incoming call waiting list storage means for storing a correspondence with a number as an incoming call waiting list;
Calling number receiving means for receiving the calling number when receiving an outside line,
PB signal receiving means for receiving a PB signal from a caller;
Collating with the telephone number stored in the calling number and the called waiting list, and a matching processing means for matching and the number indicated PB signal received by the destination specified number of the incoming call waiting list from the caller, the receiving When there are a plurality of incoming call waiting list confirmation means for confirming whether there is one or a plurality of incoming call waiting telephones corresponding to the same calling number and the same telephone number stored in the incoming call waiting list, Talkie control means for automatically answering an incoming call and guiding a selection operation of a connection destination designation number , and the calling number and the telephone number stored in the incoming call waiting list match , and there is one incoming call waiting telephone. If not only to incoming directly on the extension of the wait-for-call telephone which is stored in the incoming call waiting list, the telephone number stored in the emitting number and the call waiting list match, and incoming In the case where there are a plurality of telephones, one incoming call waiting telephone determined based on the result of the verification processing means for verifying the number indicated by the PB signal received from the caller and the connection destination designation number of the incoming call waiting list And a connection processing means for notifying that the incoming call waiting telephone has an incoming call from the incoming call waiting list without handling the call waiting when the incoming call waiting telephone is busy. Transfer control means for transferring an incoming call to a telephone of an extension or an external line registered in advance when the incoming call waiting telephone received by the means does not respond to the incoming call for a certain period of time, and the incoming call after the incoming call waiting telephone responds to the incoming call An incoming call waiting list automatic deletion means for automatically deleting the correspondence between the telephone number and the extension number from the waiting list is provided.

According to the present invention, when an outside line is transmitted from here, the message is recorded when the other party is away from the desk and asks the answerer to make a return call, or when the other party is in an absence state, the answering machine makes a return call. When you receive an incoming call from the stored phone number by storing the phone number of the other party who made an external call and your extension number in the incoming call waiting list by a simple registration operation of the phone that made the external call Since the incoming call is directly received at the stored incoming call waiting telephone, no other person's telephone response is required, thereby improving work efficiency. If a call can be made, the correspondence between the telephone number and the extension number is deleted from the waiting list for incoming calls, and thereafter, the incoming call from the telephone number returns to the normal operation and always receives the same extension telephone. There is no.

Furthermore , according to the present invention, when an incoming call comes from a telephone number stored in the incoming call waiting list, even if a plurality of incoming call telephone extension numbers corresponding to the telephone number are stored in the incoming call waiting list, A toe key for guiding the selection operation is sent out, and a call waiting telephone can be selected according to the intention of the caller by operating the PB signal of the caller.

Further , according to the present invention, the telephone number of the transfer destination or extension number to be transferred when the telephone waiting for incoming calls is not answered for a certain period of time is stored in the key telephone apparatus by the registration operation of the telephone, so that it can be used even when the user leaves the desk or goes out. In addition, it is possible to receive a call that has been returned by a PHS for a business office on the premises or a mobile phone.

Further, according to the present invention, for an incoming call from the other party stored in the incoming call waiting list, the incoming call is displayed even when the corresponding incoming call waiting telephone is busy because it is the other party waiting for the incoming call. It is also possible to respond to an incoming call from the caller after ending the existing call or temporarily holding it.

  Hereinafter, embodiments of the present invention will be described. In the following embodiments, a button telephone main device and a wired extension telephone connected to the button telephone main device will be described as examples of the button telephone device. However, the present invention is not limited to this. For example, a wireless extension telephone can be used instead of a wired extension telephone, and it may be implemented by a private branch exchange instead of a button telephone apparatus. Further, the outside line may be any line that can use the calling number, and any of an analog line, ISDN line, and IP line can be used. When the outside line is an IP line, the source IP address may correspond to the calling number depending on the network.

  FIG. 1 is a schematic configuration diagram of a key telephone main device 10 and a key telephone 20 constituting a key telephone device according to the present invention. FIG. 2 is a functional block diagram of the central control unit 11 and the storage unit 12 of the key telephone main device 10 according to the present invention. FIG. 3 is a diagram showing an example of the contents of the incoming call waiting list. FIG. 4 is a flowchart regarding registration / storage processing of an incoming call waiting list in the central control unit 11 of the key telephone main device 10 according to the present invention. FIG. 5 is a flowchart regarding the incoming call processing in the central control unit 11 of the key telephone main device 10 according to the present invention.

  First, an outline of the configuration of the key telephone main device 10 and the key telephone 20 constituting the key telephone device will be described with reference to FIG. The key telephone apparatus includes a key telephone main apparatus 10 that accommodates one or more external lines and a plurality of extensions, and a plurality of key telephones 20-1 to 20-n connected to the internal line of the key telephone main apparatus 10. .

  The key telephone main device 10 includes at least a central control unit 11, a storage unit 12, one or more external line circuits 13-1 to 13-m, a calling number receiving unit 14, a PB signal receiving unit 15, and a talky transmission. The unit 16, the communication path switch 17, and a plurality of extension circuits 18-1 to 18-n are configured.

  The central control unit 11 analyzes and determines input information (including information from the key telephone 20) from each circuit of the key telephone main device 10, inputs / outputs information to / from the storage unit 11, and controls each circuit.

  In addition to the normal function as a storage unit, the storage unit 12 stores a calling number when an outside line is received, an incoming call waiting list, a transfer destination telephone number, and the like.

  The external line circuits 13-1 to 13-m are interface circuits connected to the external line. The external line disclosed in the present invention includes a general public line, a line of an IP telephone company, a dedicated line, a private line, a wireless line such as a mobile phone (using a wireless / wired exchange adapter), and the like. In the present embodiment, a case of an analog telephone network of a general public line will be described.

  The calling number receiving unit 14 is a modem circuit that receives the calling number when an incoming call is received, and is connected to the external line circuit 13 via the communication path switch 17. In the case of an ISDN line of a general public line, the calling number information is transmitted through the control channel, so that the calling number receiving unit 14 is not necessary. In this embodiment, the calling number receiving unit 14 is configured to be independent of the external line circuit 13 and shared by a plurality of lines, but may be configured to correspond to the external line circuit 13 on a one-to-one basis.

  The PB signal receiving unit 15 is a circuit for receiving a PB signal (also referred to as a DTMF signal) sent by a caller after receiving an outside line, and is connected to the outside line circuit 13 via the communication path switch 17. In the present embodiment, the PB signal receiving unit 15 is configured to be independent of the external line circuit 13 and shared by a plurality of lines, but may be configured to correspond to the external line circuit 13 on a one-to-one basis.

  The talkie sending unit 16 is a circuit for voice guidance of the operation method to the caller, and is connected to the outside line circuit 13 via the communication path switch 17. The voice guidance may use voice synthesis or may be recorded by the user, and the means is not limited. In the present embodiment, the talkie sending unit 16 is configured to be independent of the external line circuit 13 and shared by a plurality of lines, but may be configured to correspond to the external line circuit 13 on a one-to-one basis.

  The communication path switch 17 is used for exchange processing in the key telephone main unit 10 (connection between the external lines 13-1 to 13-m and the extension circuits 18-1 to 18-n, the calling number receiver 14 and the external lines 13-1 to 13-1). 13-m, PB signal receiving unit 15 and external lines 13-1 to 13-m, Torque sending unit 16 and external lines 13-1 to 13-m, and the like.

  The extension circuits 18-1 to 18-n are interface circuits for communicating voice and control information with the key telephones 20-1 to 20-n.

  The key telephone 20 includes at least a control unit 21, a data transmission / reception circuit 22, a voice processing unit 23, a handset 24, a speaker 25, a dial key 26, an outside line key 27, and an incoming call waiting list registration key. 28, a function key 29, and an LCD display 30.

  The control unit 21 analyzes and determines input information from each circuit in the key telephone 20 and controls each circuit.

  The data transmission / reception circuit 22 is an interface circuit for communicating voice data and control data with the key telephone main device 10 via an extension.

  The voice processing unit 23 controls voice volume digital / analog conversion, analog / digital conversion, call path switching processing with the handset 24 and the speaker 25 in the key telephone 20, and volume.

  The handset 24 is a handset for performing transmission and reception during a call.

  The speaker 25 is used for ringing an outside line ring tone and for amplifying the other party's voice through the speaker.

  The dial key 26 is a means for inputting a telephone number and abbreviated dial at the time of outgoing call, and is also used as an input means for registration of abbreviated dial and various settings generally used in a button telephone apparatus.

  The outside line key 27 is a plurality of buttons for selecting an outside line to be used from a plurality of outside lines, and an LED indicator for displaying the state of the outside line (incoming, in use, on hold, etc.) corresponding to the button. It has.

  The incoming call waiting list registration key 28 is a key for registering in the incoming call waiting list the correspondence between the telephone number of the other party who made the outgoing call and the extension number of the own telephone. It is also possible to use a combination of the “setting” button of the function key 29 and the dial key 26 instead of the dedicated key.

  A plurality of function keys 29 are provided, and in addition to a “hold” button and a “setting” button that are generally used in a key telephone device, a “speed” button used for making a speed dial and a speed dial transmission operation can be performed with one touch. Input means such as a “one-touch dial” button.

  The LCD display 30 displays caller information and the like when receiving a call, displays a dialed number and a call time when calling, and displays input data and the like when registering speed dials and inputting various settings.

  Next, functional configurations of the central control unit 11 and the storage unit 12 of the key telephone main device 10 according to the present invention will be described with reference to FIG. The central control unit 11 includes at least an external circuit control means F40, a calling number receiving means F41, a PB signal receiving means F42, a talkie control means F43, a speech path control means F44, a data transmitting / receiving means F45, and a calling number. Registration means F46, connection processing means F47, received data analysis means F48, verification processing means F49, incoming call waiting list automatic erasure means F50, transfer control means F51, incoming call waiting list registration means F52, transfer destination registration The storage unit 12 includes a transfer destination storage unit F54, an incoming call waiting list storage unit F55, and a calling number storage unit F56.

  The outside line circuit control means F40 has a function of controlling outside line transmission and outside line arrival to the outside line circuit 13. When the outside line incoming call is detected, the outside line circuit control means F40 notifies the connection processing means F47 that the outside line arrival has been detected, and the communication path control means. Under the control of F44, the external line circuit 13 is connected to the calling number receiving unit 14 via the communication path switch 17.

  The calling number receiving unit F41 has a function of controlling the calling number receiving unit 14 and notifying the calling number registration unit F46 of the calling number information received by the calling number receiving unit 14. Since the control method for receiving the calling number information is well known, the description is omitted.

  The PB receiving unit F42 has a function of controlling the PB signal receiving unit 15 and notifying the verification processing unit F49 of PB signal (also referred to as a push signal or DTMF signal) information sent from the caller. A control method for receiving the PB signal information is well known and will be omitted.

  The talkie control means F43 controls the talkie sending part 16, and when talkie sending to the caller is required, the talkie control means F43 corresponds to the designation from the connection processing means F47 (for example, “0 when calling XX, When calling up x, please dial 1 to have the function of instructing the talkie sending unit 16 to send out an operation guide like "

  The speech path control means F44 has a function of issuing an instruction to connect the speech path of each circuit to the speech path switch 17 in accordance with a speech path connection instruction from the connection processing means F47. For example, when an external line incoming call is detected, a communication path between the external line circuit 13 and the calling number receiving unit 14 is connected, and when a talkie transmission is necessary, a communication path between the external line circuit 13 and the talky transmission unit 16 is connected. When it is necessary to receive a PB signal from a person, an instruction to connect a speech path between the external line circuit 13 and the PB signal receiver 15 is sent to the speech path switch 17.

  The data transmission / reception means F45, based on an instruction from the connection processing means F47, for example, when the external line is in an incoming call state, displays the incoming call display information (whether the incoming call is ringing, the type of the incoming call tone, the button for displaying the incoming call, etc.) on the key telephone. 18 has a function of sending to the key telephone 20 via 18. The data transmission / reception means F45 also has a function of notifying the reception data analysis means F48 of the operation content of the key telephone 20.

  The calling number registration means F46 has a function of registering the calling number information received from the calling number receiving means F41 in the calling number storage means F56.

  The connection processing means F47 has a function of exchanging information with each functional block and performing various connection processes. When the external line control means F40 is notified of the detection of the incoming call, it instructs the communication path control means F44 to connect the communication path between the external circuit 13 and the calling number receiving unit 14. When talk key transmission is required, the talk processing means F43 is instructed to send a talk key in response to an instruction from the verification processing means F49, and the communication path control means F44 connects the communication path between the external line circuit 13 and the talkie sending section 16. Instruct. When the incoming call waiting telephone to be received is determined, incoming display information (whether or not there is an incoming call, type of incoming call, button for displaying incoming call, etc.) is transmitted to the data transmitting / receiving means F45 according to an instruction from the verification processing means F49. When the telephone responds to the incoming call, response information is received from the reception data analysis means F48, and the communication path control means F44 is instructed to connect the communication path between the external circuit 13 and the extension circuit 18 of the telephone. When a call based on the incoming call waiting list is established, the incoming call waiting list automatic erasure means F50 is instructed to delete data of the corresponding telephone number and extension number from the incoming call waiting list. When the telephone does not respond to the incoming call for a certain period of time and transfer is required, the transfer control means F51 is activated. When transfer to the outside line is required, the transfer control means F51 instructs the outside line circuit control means F40 according to the transfer instruction. Instructing outgoing calls using another outside line. When transfer to the extension is required, the incoming call display information for the transfer destination extension circuit is transmitted to the data transmitter / receiver F45 in response to a transfer instruction from the transfer controller F51.

  The reception data analysis means F48 has a function of analyzing the operation information of the key telephone 20 notified from the data transmission / reception means F45. The operation information is delivered to any one of the connection processing means F47, the incoming call waiting list registration means F52, and the transfer destination registration means F53 according to the contents of the operation performed in each state of the telephone.

  The verification processing means F49 checks whether the same telephone number as the calling number stored in the calling number storage means F56 is stored in the incoming call waiting list storage means F55, and if it is stored, the incoming call waiting telephone corresponding to the telephone number is sent. Has a function of instructing the connection processing means F47 to perform incoming call processing. If there are a plurality of incoming call waiting telephones corresponding to the telephone number, the incoming call waiting process corresponding to the connection destination designation number indicated by the PB signal received from the PB signal receiving means F42 is processed by the connection processing means F47. Instruct.

  The incoming call waiting list automatic deleting means F50 has a function of deleting the data of the corresponding telephone number and extension number from the incoming call waiting list storage means F55 in response to an instruction from the connection processing means F47 when a call based on the incoming call waiting list is established. Have.

  When the incoming call waiting telephone does not respond to the incoming call for a certain period of time, the transfer control means F51 makes a call using a separate external line to the connection processing means F47 or an incoming call to the transfer destination extension circuit based on the transfer destination information in the transfer destination storage means F54. It has a function of instructing transmission of display information.

  The incoming call waiting list registering means F52, in response to an instruction from the received data analyzing means F48, performs an operation for registering in the incoming call waiting list when the key telephone 20 makes an outside line outgoing call. It has a function of registering the extension number of the key telephone in the incoming call waiting list storage means F55. If there is already the same registration, duplicate registration is not performed.

  When the key telephone 20 performs a transfer destination registration operation when the key telephone 20 is not responding, the transfer destination registration means F53 receives the transfer destination telephone number or extension number of the key telephone in accordance with an instruction from the received data analysis means F48. It has a function to register with.

  The transfer destination storage means F54 has a function of storing the transfer destination telephone number or extension number notified from the transfer destination registration means F53 for each telephone.

  The incoming call waiting list storage means F55 has a function of storing the correspondence between the telephone number notified from the incoming call waiting list registration means F52 and the extension number of the telephone.

  The calling number storage means F56 has a function of temporarily storing the calling number information notified from the calling number registration means F46.

  Next, the structure of the incoming call waiting list will be described with reference to FIG. The incoming call waiting list stores the extension numbers of telephones waiting for an incoming call with respect to the telephone number of the caller in the order of registration. In the figure, it is possible to register the extension numbers of up to 10 telephones from designated number 0 to designated number 9, and when a plurality of extension numbers are registered for one telephone number (example: telephone number) If the extension number is “03.. 1112”, the extension numbers are registered in the designated number 0 and designated number 1), and the caller dials the designated numbers 0 to 9 to indicate the extension to be connected according to the voice guidance instruction. It will be. Moreover, when increasing the number of registration possible, you may increase the number of digits of a designated number. When a call based on the incoming call waiting list is established, the extension number data corresponding to the telephone number on which the call is established is erased from the incoming call waiting list, and the erased portion is packed and rearranged. In the case of the example of FIG. 3, when a call with the telephone number “03... 1112” and the extension number “21” is established, the extension number of the designated number 0 of the telephone number “03. The designation number 1 is “Null”.

  Next, the flow of incoming call waiting list registration / storage processing on the key telephone main apparatus 10 side in the above embodiment will be described with reference to FIG. In addition, in FIG. 4, the order of each step shows an example, and you may replace arbitrarily in the range which does not change an effect | action and an effect.

  First, an outside line transmission is performed to enter an outside line communication state (S101).

  If an incoming call waiting list registration operation is received from the telephone in step S102 (Yes), the main device performs incoming call waiting list registration / storage processing (S103), and the incoming call waiting list registration / storage processing ends.

  If no incoming call waiting list registration operation is received from the telephone in step S102 (No), the process returns to step S102 and waits for an incoming call waiting list registration operation from the telephone. Note that the processing of step S102 to step S103 is basically performed during a call, but it may be possible to process after the end of the call until the next outgoing call or incoming call response.

  Next, the flow of incoming call processing on the key telephone main device 10 side in the above embodiment will be described with reference to FIG. In addition, in FIG. 5, the order of each step shows an example, and you may replace arbitrarily in the range which does not change an effect | action and an effect.

  First, when there is an incoming call, the external circuit control means F40 detects that there is an incoming call, and the calling number receiving means F41 performs calling number reception processing (S201). Since the control method for receiving the calling number information is known, the details are omitted.

  The received calling number is temporarily stored in the calling number storage means F56 by the calling number registration means F46 (S202).

  After step S202, the collation processing means F49 collates the calling number stored in the calling number storage means F56 with the telephone number stored in the incoming call waiting list storage means F55 (S203). If they do not match, the process proceeds to the normal incoming call processing (S204). Then, the answer / call process (S205) is finally ended.

  If there is a matching telephone number in step S203, it is continuously checked whether there is only one incoming call telephone stored in the incoming call waiting list storage means F55 (S206), and if there is only one telephone (Yes), step S210 is executed. Migrate to If it is not one (No), the process proceeds to step S207, and the talkie control means F43 calls the destination guidance talkie corresponding to the designation from the connection processing means F47 (for example, “0 is called when XX is called and XX is called” When you do this, dial 1 to send the operation guidance).

  During the talk key transmission in step S207 and for a fixed time after the talk key transmission (it may be variable depending on the setting), it waits for the dial operation (PB signal) of the designated number from the caller and receives the PB signal from the caller (S208). The collation processing means F49 collates whether there is an extension number corresponding to the received designated number (S209).

  If there is an extension number corresponding to the designated number in step S209 (applicable), the process proceeds to step S210. If there is no extension number corresponding to the designated number (not applicable), the process proceeds to step S204 as in the case of a normal incoming call. Although not clearly shown in the figure, if the PB signal from the caller cannot be received even after waiting for a predetermined time in step S208 or if the PB signal is not specified, the destination guidance talk key sending process in step S207 is performed. Or may be handled in the same manner as when there is no extension number corresponding to the designated number, and the process may proceed to step S204.

  Since the corresponding incoming call waiting telephone is determined in step S206 or step S209, it is checked whether the telephone is busy (S210).

  If it is determined in step S210 that the corresponding call waiting telephone is not busy (No), an incoming call process is performed on the telephone (S211). When the telephone is in a call (Yes), an incoming call notification process (S215) is performed. As a method of incoming call notification processing during a call, the volume is lowered during a call to ring a ring tone from the speaker 25 of the key telephone 20, or an in-band tone (for example, “pupp” sound is emitted from the receiver 24 at regular intervals. The notification means is not particularly limited. Further, in addition to the other party's phone number and name, the LCD display 30 may display text indicating that the incoming call is based on the incoming call waiting list.

  After the process of step S211 or step S215, a response to the incoming call of the telephone is waited (S212). When the response is made within a predetermined time (Yes), the process is shifted to the call process (S213). The corresponding telephone number and extension number data are deleted from the waiting list storage means F55 (S214). If there is another extension number corresponding to the telephone number, only the extension number of the telephone is deleted. Eventually, the call is completed and the call ends.

  If the telephone does not respond to the incoming call within a predetermined time (No) in step S212, it is checked whether the transfer destination is stored in the transfer destination storage means F54 (S216), and if not stored (No), the step The process proceeds to the cutting process of S221. In addition, although it is set as the transfer to a disconnection process in this figure, you may transfer to the normal incoming call process of step S204.

  If the transfer destination is stored in step S216 (Yes), the transfer control means F51 collates the transfer destination of the corresponding telephone stored in the transfer destination storage means F54 and performs a call processing to the transfer destination (S217). ). If the transfer destination is an external line, the connection processing means F47 is instructed to make a call using another external line. If the transfer destination is an extension, the connection processing means F47 is instructed to receive a call to the transfer destination extension telephone. Instruct. Since the transfer operation is publicly known, detailed description thereof is omitted.

  After the process of step S217, the call of the transfer destination telephone is waited for (S218). If the call is answered within a certain time (Yes), the process proceeds to the call process (S219). The automatic deletion means F50 deletes the corresponding telephone number and extension number data from the incoming call waiting list storage means F55 (S220). If there is another extension number corresponding to the telephone number, only the extension number of the telephone is deleted. Eventually, the call is completed and the call ends.

  If the transfer destination telephone does not respond within a predetermined time in step S218 (No), the line is disconnected (S221), and the process ends. Since the incoming call waiting list remains, when an incoming call is received from the other party again, it is possible to receive an incoming call to the corresponding telephone as in the previous case.

1 is a schematic diagram of the configuration of a key telephone main device 10 and a key telephone 20 according to the present invention. FIG. 3 is a functional block diagram of a central control unit 11 and a storage unit 12 according to the present invention. The figure explaining the structural example of an incoming call waiting list. The flowchart regarding the waiting list registration / storage processing in the central control unit 11 of the key telephone main device 10 according to the present invention. The flowchart regarding the incoming call process in the central control part 11 of the key telephone main apparatus 10 which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Button telephone main apparatus 11 Central control part 12 Memory | storage part 13 External line circuit 14 Calling number receiving part 15 PB signal receiving part 16 Talkie sending part 17 Speech path switch 18 Extension circuit 20 Key telephone 21 Control part 22 Data transmission / reception circuit 23 Voice processing part 24 transmitter / receiver 25 speaker 26 dial key 27 external line key 28 incoming call waiting list registration key 29 function key 30 LCD display F40 external line circuit control means F41 calling number reception means F42 PB signal reception means F43 talk key control means F44 speech path control means F45 data Transmission / reception means F46 Calling number registration means F47 Connection processing means F48 Received data analysis means F49 Verification processing means F50 Incoming call waiting list automatic deletion means F51 Transfer control means F52 Incoming call waiting list registration means F53 Forwarding destination registration means F54 Forwarding Storage means F55 incoming waiting list storage means F56 shot number storage means

Claims (1)

A key telephone system comprising a key telephone main unit accommodating one or more external lines and a plurality of extensions, and a plurality of button telephones connected to the extensions,
The key telephone main device is:
An incoming call waiting list registration means for registering a correspondence between a telephone number transmitted when the key telephone makes an outgoing call and an extension number of the key telephone by key operation of the telephone;
An incoming call waiting list storage means for storing a correspondence between the telephone number and the extension number as an incoming call waiting list;
Calling number receiving means for receiving the calling number when receiving an outside line,
PB signal receiving means for receiving a PB signal from a caller;
Collation processing means for collating the calling number with the telephone number stored in the incoming call waiting list , and comparing the number indicated by the PB signal received from the caller with the connection destination designation number of the incoming call waiting list ;
An incoming call waiting list confirmation means for confirming whether one or more incoming call waiting telephones correspond to the received calling number and the same telephone number stored in the incoming call waiting list;
A talkie control means for automatically answering an incoming call and guiding a selection operation of a connection destination designation number when there are a plurality of incoming call waiting telephones;
Only when the calling number matches the telephone number stored in the incoming call waiting list and there is only one incoming call waiting telephone, the incoming call waiting telephone number stored in the incoming call waiting list is directly received. When the calling number and the telephone number stored in the incoming call waiting list match and there are a plurality of incoming call waiting telephones, the number indicated by the PB signal received from the caller and the connection destination designation number of the incoming call waiting list The incoming call is directly received at the extension number of one incoming call waiting telephone set determined on the basis of the result of the above-mentioned verification processing means, and if the incoming call waiting telephone is busy, the incoming call waiting telephone is not treated as busy. Connection processing means for notifying that there is an incoming call from the incoming call waiting list;
A transfer control means for transferring an incoming call to a previously registered internal or external telephone when the incoming call waiting telephone received by the connection processing means does not respond to the incoming call for a certain period of time;
A temporary direct incoming call function comprising: an incoming call waiting list automatic deletion means for automatically deleting the correspondence between the telephone number and the extension number from the incoming call waiting list after the incoming call waiting telephone responds to the incoming call; Equipped with a button telephone system.

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