JP3700554B2 - Button telephone equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a key telephone apparatus having a call forwarding function.
[0002]
[Prior art]
Some key telephone devices of this type that accommodate a plurality of external lines in a main device having an exchange function and accommodate a plurality of key telephones as extension telephones in the main device include an incoming call transfer function. The key telephone apparatus having such a transfer function divides a plurality of external lines accommodated in the main apparatus into an incoming external line and an outgoing external line in advance, and when an incoming call arrives on the incoming external line, the main apparatus Transmits a telephone number registered in advance as a transfer destination from an outside line for transmission. When detecting the transfer destination response to the outgoing call, the main apparatus automatically responds to the incoming call incoming line and connects the outgoing call line to the incoming call line. As a result, the calling side and the transfer destination are connected to each other via the main device, and a call between the calling side and the transfer destination becomes possible.
[0003]
On the other hand, an exchange network that accommodates such a key telephone device provides an incoming call interrupt service called a call waiting service that enables an incoming call interrupt to a user during a call. Here, if the incoming call interruption service is provided to the key telephone device, if there is an incoming call request to the user during an external line call by the user of the key telephone device, the call is made from the switching network side. An incoming call interruption is notified to the outside line, and in this case, the user who is on the outside line call of the key telephone apparatus can respond to the incoming call interruption by noticing the incoming call interruption and performing a predetermined operation.
[0004]
[Problems to be solved by the invention]
In recent years, services have been provided that notify the caller's ID (caller's phone number) from the exchange network when receiving a call. If you subscribe to such a service, the caller's phone number is notified to the caller when you receive a call. The incoming side can easily recognize who the caller is before the incoming call is answered. There is a desire to apply such a caller phone number notification function to the incoming call interruption during the aforementioned transfer call in the button telephone device, but in such a case, the incoming call rejection function which is the original function of the button telephone device, There was a problem that a failure occurred in the incoming call priority function.
Therefore, the present invention does not impair the incoming call rejection function and the incoming call priority function, which are the original functions of the key telephone device, when the outgoing call ID notification function is applied at the time of incoming call interruption during a transfer call in the key telephone device. It is an object to enable transfer of this incoming interrupt call.
[0005]
[Means for Solving the Problems]
In order to solve such a problem, the present invention accommodates a key telephone in the main unit, and accommodates a plurality of external lines set in advance as either an incoming line or an outgoing line in the main unit. When the incoming call is detected on the incoming call outside line, the call is sent to the preset transfer destination via the outgoing call outside line, and the transfer function for transferring the incoming call to the outgoing call outside line by connecting between the incoming call outside line and the outgoing call outside line is provided. In the button telephone device having the main device, the main device stores information on the incoming call interrupter arriving at the incoming external line along with the incoming interrupt call when the incoming interrupt call arrives at the incoming external line during a call based on the transfer function. A detecting means for detecting, a connecting means for sending a switching signal to the incoming call outside line to connect the incoming interrupt call to the outgoing outside line, and a control for controlling the connecting means based on the information of the incoming interrupter detected by the detecting means Means.
The main unit has storage means for storing a transfer rejection number for rejecting transfer of the incoming call interrupting call, and the control means includes a telephone number indicating information of the incoming call interrupter and a transfer rejection number of the storage means. When a match is detected, the incoming interrupt call is not transferred to the transfer destination.
[0006]
Further, the main apparatus has a table for storing the priority order of incoming calls to the transfer destination, switching signal sending means for sending a switching signal to the incoming call outside line, and message signal sending means for sending a predetermined message signal to the incoming call outside line. And when the incoming call is interrupted, the control means uses the information in the table as the incoming call priority between the forwarding destination, the first destination in the call, and the second destination indicating the incoming interrupter. Therefore, when the determination means determines that the second destination is determined to have a low incoming priority by the determination means, a switching signal is sent from the switching signal sending means to the incoming call outside line and connected to the second destination. In addition, a predetermined message signal is sent from the message signal sending means to the second destination, and after the message signal is sent, the switching signal sending means sends the switching signal to the incoming call outside line to connect to the first destination. First A call continuation means for continuing the call between the hand and the transfer destination and a switching signal is sent from the switching signal sending means to the outside line for incoming call when a call end of the ongoing call is detected, and the second destination is connected. When the second destination is connected to the incoming call outside line, a call is made with the forwarding destination, while when the second destination is not connected to the incoming call outside line, the incoming call outside line and the outgoing call outside line are connected. And a transfer call end means for disconnecting the connection and opening the incoming call outside line and the outgoing call outside line.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a button telephone apparatus according to the present invention. This key telephone apparatus accommodates an external line group 11 made up of a plurality of external lines connected to the exchange network 1 and has a switching function, and a plurality of key telephones (hereinafter referred to as slaves) accommodated in the main apparatus 10. ) 20A to 20N.
[0008]
The main apparatus 10 includes an external line I / F unit 12 that is an interface of the external line group 11, an internal line I / F unit 13 that is an interface of the plurality of slave units 20A to 20N, each external line in the external line group 11, and the slave unit 20A. It comprises an exchange processing unit 14 that is a communication path switch for connecting a communication path between ˜20N, a main control unit 15 that controls each unit in the main apparatus 10, and a main storage unit 16 that stores various data. The main apparatus 10 includes an information receiving unit 17 that receives a caller telephone number (hereinafter referred to as a calling ID) when an external line is received, a flash transmission unit 18 that transmits a flash signal indicating a switching signal to the external line, and an external line. And a message sending unit 19 for sending a predetermined message signal.
[0009]
On the other hand, each of the slave units 20A to 20N includes a transmission I / F unit 21 that performs data transmission with the main device 10, a call circuit 22, a slave unit control unit 23 that controls each unit of the slave unit, a dial key, An operation input unit 24 such as an outside line key, a display unit 25, and a memory 26 are provided.
[0010]
By the way, this button telephone apparatus sets the outside line 11A as an incoming line and the outside line 11B as an outgoing line as shown in FIG. 2 to be described later in the accommodated external line group 11, and when an incoming call arrives on the external line 11A in advance. The telephone number of the transfer destination stored in the main storage unit 16 of the main device 10 is transmitted via the outgoing call outside line 11B, and when the transfer destination responds to this call, the incoming call is answered on the incoming call outside line 11A. The incoming call outside line 11A and the outgoing call outside line 11B are connected to each other so that a call transfer function for enabling a call between the caller and the transfer destination is provided.
[0011]
The transfer function of such a button telephone apparatus will be described in more detail with reference to FIG. 1 described above and FIGS. 2 and 3 described later.
When the caller A shown in FIG. 2 calls the telephone number of the accommodated external line 11A of the button telephone device 5, an incoming call based on this call arrives on the external line 11A. Here, this incoming call is normally notified to the user of the handset 20A, for example, and the caller A can talk to the user of the handset 20A by an incoming call response operation of the user of the handset 20A. . However, when the user of the slave unit 20A is required to travel to a remote place, the outside line 11A is set for incoming calls, and the outside line 11B is set for outgoing calls and used by the user of the slave unit 20A. The telephone number of the remote telephone terminal is stored in the main storage unit 16 as the telephone number of the transfer destination B.
[0012]
In such a case, when an incoming call arrives on the external line 11A, the main control unit 15 in the main apparatus 10 controls the external line I / F unit 12 to capture the outgoing external line 11B, and the main storage unit 16 in FIG. The telephone number of the transfer destination B stored in the table 16A shown is read out and sent to the external line I / F unit 12 to be sent as a dial signal to the outgoing line 11B, and a call to the telephone terminal of the transfer destination B is made. Do. When the response of the terminal of the transfer destination B is detected via the external line I / F 12 in response to this call, the main control unit 15 automatically responds to the incoming call on the incoming external line 11A and controls the exchange processing unit 14 shown in FIG. Then, the call path between the incoming call outside line 11A and the outgoing call outside line 11B is connected. As a result, a call between the caller A and the transfer destination B becomes possible.
[0013]
When the caller C shown in FIG. 2 makes a call with the user of the handset 20A during such an external line transfer call, when the telephone number of the incoming call external line 11A of the button telephone device 5 is called, When the incoming call outside line 11A subscribes to an incoming call interruption service called a call waiting service, an incoming call interruption comes from the switching network 1 to the incoming call outside line 11A. If the calling party C subscribes to the calling ID notification function service, the telephone number of the calling party C from the switching network 1 becomes the calling ID via the incoming call outside line 11A at the time of the incoming call interruption. Is notified.
[0014]
In this case, when the main control unit 15 of the main device 10 detects the incoming call interrupt via the external line I / F unit 12, it is notified from the switching network 1 and received by the information receiving unit 17 at the time of the incoming call interruption. Enter the calling ID.
The main control unit 15 determines whether or not the input caller ID matches the transfer rejection number stored in the table 16B shown in FIG. 3 in the main storage unit 16, and if it matches, this incoming call interruption is handled. Nothing is processed.
[0015]
On the other hand, if the input call ID does not match the transfer rejection number in the table 16B, the main control unit 15 next refers to the incoming call priority of the table 16 shown in FIG. The priority order of the caller ID of the caller C and the telephone number of the caller A during a call is compared. In this case, the main control unit 15 responds to the level of priority (in the table 16C of FIG. 3, the order of priority is (1) → (2) → (3) → (4) in descending order). The incoming call is transferred.
[0016]
4 and 5 are sequence diagrams showing the operation of incoming call interruption during the above-described outside line transfer call. Here, FIG. 4 shows the operation when caller A has a higher call priority than caller C, and FIG. 5 shows the caller C having a higher call priority than caller A. This shows the operation.
[0017]
First, an incoming call interruption operation during an external line transfer call will be described in detail with reference to the sequence diagram of FIG.
When an incoming call based on the call from the caller A arrives at the incoming call outside line 11A, the main control unit 15 in the main apparatus 10 controls the external line I / F unit 12 to capture the outgoing call outside line 11B, and the main memory. The transfer destination B is called by reading out the telephone number of the transfer destination B stored in the table 16A of the unit 16 and dialing via the outgoing call outside line 11B. When the response of the transfer destination B is detected in response to this call, the main control unit 15 controls the external line I / F unit 12 to capture the incoming external line 11A, automatically responds to the incoming call, and controls the exchange processing unit 14 A call path between the incoming call outside line 11A and the outgoing call outside line 11B is connected. Thereby, the outside line transfer call between the caller A and the transfer destination B is performed in step S1.
[0018]
When such a caller A and the transfer destination B are making an external line transfer call via the incoming call outside line 11A and the outgoing call outside line 11B, if a new caller C calls the transfer destination B, the call is received. An incoming call interrupt arrives at the outside credit line 11A (step S2), and the main control unit 15 of the main device 10 performs a process for detecting this incoming call interrupt at step S3.
In this incoming call interruption detection process, the main control unit 15 compares the caller C's outgoing ID detected at the time of this incoming call interruption with the transfer rejection number in the table 16B in the main storage unit 16 to determine whether or not transfer is possible. If the caller C's call ID matches the transfer rejection number, the caller C's incoming interrupt call is not transferred to the transfer destination B in step S5. Process and finish.
[0019]
On the other hand, if the caller C's call ID and the transfer rejection number in the table 16B do not match, the main control unit 15 first sends a hold sound from the hold sound source (not shown) to the transfer destination B in step S6. Thereafter, based on the table 16C in the main storage unit 16, the main control unit 15 sets the calling ID of the calling party C and the calling ID of the calling party A who is in communication with the transfer destination B (when an incoming call is made to the transfer destination B). In step S7, the process of determining the priority of the incoming call to the receiver is received in advance and stored in a predetermined area of the main storage unit 16).
[0020]
If the main control unit 15 determines that the caller A has a higher priority, the main control unit 15 controls the flash sending unit 18 in step S8 to send a flash signal to the incoming call outside line 11A, thereby switching the switching network. 1 is switched to the incoming call outside line 11A, and the caller C and the outside line I / F unit 12 are connected. Thereafter, the main control unit 15 drives the message sending unit 19 to send, for example, a message “Now talking” to the external line I / F unit 12. This message is transmitted to the calling party C via the incoming call outside line 11A and the switching network 1 and listened to by the calling party C.
[0021]
After sending the message, the main control unit 15 releases the hold to stop sending the hold sound to the transfer destination B in step S10, and controls the flash sending unit 18 in step S11, so that the incoming call outside line 11A is sent. A flash signal is transmitted to cause the switching network 1 to switch the incoming call outside line 11A, and the caller A and the outside line I / F unit 12 are reconnected. Thereby, the transfer call between the caller A and the transfer destination B is resumed in step S12.
[0022]
During such a transfer call, the main control unit 15 executes an end call detection process for detecting a busy tone from the incoming call outside line 11A based on the end call of the caller A in step S13. When a busy tone from the incoming call outside line 11A is detected via the outside line I / F unit 12, a call termination process is performed in step S14. Then, by controlling the flash sending unit 18 in step S15 during the end-of-call process, a flash signal is sent to the incoming call outside line 11A, causing the switching network 1 to switch the incoming call outside line 11A, and an incoming call interruption. The caller C who made the call and the external line I / F unit 12 are reconnected.
Here, when the calling party C who has interrupted the call has already abandoned the call and a busy tone from the switching network 1 side is detected, the main control unit 15 controls the external line I / F unit 12. The incoming call outside line 11A and the outgoing call external line 11B are released, and the exchange processing unit 14 is controlled to disconnect the call path between the incoming call outer line 11A and the outgoing call external line 11B (step S16).
[0023]
On the other hand, if the caller C who has made the incoming call interruption has not abandoned the call and therefore no busy tone is detected from the switching network 1, the main control unit 15 determines whether the caller A and the transfer destination B The caller C is assumed to have waited until the end of the call between them, and the caller C and the transfer destination B are allowed to make a call (steps S16 and S17).
After that, when a busy tone based on the caller C's end call is detected, the incoming call outside line 11A and the outgoing call external line 11B are opened, and the call path between the incoming call outer line 11A and the outgoing call external line 11B is disconnected.
[0024]
Next, an incoming call interruption operation during an external line transfer call will be described in detail with reference to the sequence diagram of FIG. The example of FIG. 5 is an operation example in the case where the caller C who has made an incoming call interruption has a higher incoming call priority than the caller A already in a transfer call as described above.
Here, the operations in steps S1 to S7 in FIG. 5 are the same as the operations in steps S1 to S7 in FIG.
If a new caller C calls the transfer destination B while the caller A and the transfer destination B are making an external line transfer call, the incoming call interrupt detection process in step S3 and the transfer cannot be transferred in step S4 After checking processing, in step S7, based on the setting contents of the table 16C, the calling party A's calling ID with the transfer destination B (previously received when the call arrives at the transfer destination B and stored in a predetermined area of the main storage unit 16). Stored) and the caller ID of the caller C who newly made an incoming call interruption.
[0025]
Here, when the main control unit 15 determines that the calling party C has a higher priority, the main control unit 15 drives the message sending unit 19 in step S21, for example, “Now, incoming call interruption has occurred. A message “Please wait for a while as we talk to the interrupter” is sent to the external line I / F unit 12. This message is transmitted to the calling party A via the incoming call outside line 11A and the switching network 1, and is listened to by the calling party A.
[0026]
After sending the message, the main control unit 15 releases the hold to stop sending the hold sound to the transfer destination B in step S22 and controls the flash sending unit 18 to send a flash signal to the incoming call outside line 11A. To switch the incoming call outside line 11A to the switching network 1 to connect the caller C and the outside line I / F unit 12. As a result, the transfer destination B shifts from a call with the caller A to a call with a new caller C (step S24).
[0027]
During a call between the transfer destination B and the caller C, the main control unit 15 executes an end call detection process in step S25 to detect a busy tone from the incoming call outside line 11A based on the caller C's end call. When the caller C detects a busy tone from the incoming call outside line 11A via the call end line I / F unit 12, the call end process is performed in step S26. Then, by controlling the flash sending unit 18 in step S27 during the call termination processing, a flash signal is sent to the incoming call outside line 11A, causing the switching network 1 to switch the incoming call outside line 11A, and the original call. The caller A, who is a caller, and the external line I / F unit 12 are reconnected.
Here, when the caller A who is the original caller has already abandoned the call and a busy tone from the switching network 1 side is detected, the main control unit 15 controls the external line I / F unit 12. The incoming call outside line 11A and the outgoing call external line 11B are released, and the exchange processing unit 14 is controlled to disconnect the call path between the incoming call outer line 11A and the outgoing call external line 11B (step S28).
[0028]
On the other hand, if caller A of the original caller has not abandoned the call, and therefore no busy tone is detected from the switching network 1, the main control unit 15 connects caller C who is the incoming call interrupter. Assuming that caller A has waited until the end of the call with transfer destination B, the call between caller A and transfer destination B is resumed (steps S28 and S29).
Thereafter, when a busy tone based on the caller A's end call is detected, the incoming call outside line 11A and the outgoing call external line 11B are opened, and the call path between the incoming call outer line 11A and the outgoing call external line 11B is disconnected.
[0029]
【The invention's effect】
As described above, according to the present invention, a key telephone is accommodated in the main device, and a plurality of external lines set in advance as one of the incoming external line and the outgoing external line are accommodated in the main device. A button with a transfer function that, when an incoming call on a credit outside line is detected, is sent to a preset transfer destination via the outgoing call line, and the incoming call is transferred to the outgoing call line by connecting between the incoming call line and the outgoing call line. In the telephone device, the main device, such as the caller ID of the incoming interrupter that arrives at the incoming external line along with the incoming interrupt call when the incoming interrupt call arrives at the incoming external line during a call based on the transfer function A detecting means for detecting information; and a connecting means for sending a switching signal to the incoming call outside line to connect the incoming interrupt call to the outgoing call outside line, and connecting means based on the information of the incoming interrupter detected by the detecting means To limit the transfer of incoming interrupt calls Therefore, when the caller ID notification function is applied at the time of an incoming call interruption at the time of a transfer call of a key telephone apparatus having an incoming call rejection function or an incoming call priority function, the key telephone apparatus originally responds to the function that the key telephone apparatus has. Transfer of incoming interrupt calls can be restricted accurately, and therefore only incoming interrupt calls desired by the transfer destination can be transferred to the transfer destination accurately.
In addition, the main device prevents the incoming interrupt call from being transferred to the transfer destination when the calling ID indicating the information of the incoming call interrupt and the transfer rejection number stored in advance match. Unnecessary incoming interrupt call transfer to can be prevented.
[0030]
Further, the main device determines the incoming call priority order between the transfer destination, the first destination in a call, and the second destination indicating the incoming interrupter at the time of incoming call interruption, and the second destination When it is determined that the incoming call priority is lower, a switching signal is sent to the incoming call outside line to connect to the second destination and a predetermined message signal is sent to the second destination. After the transmission, the switching signal is sent to the incoming call outside line to continue the call between the first destination and the transfer destination. On the other hand, when the end of the call is detected, the switching signal is sent to the incoming call outside line. Connect to the other party, and if the second party is connected to the incoming line, make a call with the forwarding destination, and if the second party is not connected to the incoming line, Disconnect the connection between the credit outside line and the outgoing line, and open the incoming line and outgoing line As a result, it is possible to send a predetermined message to the other party while waiting for an incoming call from a lower priority party during a call with a higher priority party. When the call with the other party having a high value is finished, the call with the other party on standby can be performed.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a key telephone apparatus according to the present invention.
FIG. 2 is an explanatory diagram illustrating a transfer function of the button telephone device.
FIG. 3 is a diagram showing a configuration of a table provided in a main storage unit of the key telephone device.
FIG. 4 is a sequence diagram showing the main operation of the button telephone device.
FIG. 5 is a sequence diagram showing a main part operation of the button telephone device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Switching network, 5 ... Button telephone apparatus, 10 ... Main apparatus, 11 ... Outer line group, 11A, 11B ... Outer line, 12 ... Outer line I / F part, 13 ... Extension I / F part, 14 ... Exchange processing part, 15 ... Main control unit, 16 ... Main storage unit, 16A ... Transfer destination phone number table, 16B ... Transfer rejection phone number table, 16C ... Receiving priority phone number table, 17 ... Information receiving unit, 18 ... Flash sending unit, 19 ... Message sending unit, 20A to 20N, button telephone (slave unit), A, C, caller, B, transfer destination.

Claims (3)

When a key telephone is accommodated in the main unit, a plurality of external lines set in advance as either an incoming line or an outgoing line are accommodated in the main unit, and an incoming call is detected when an incoming call is detected on the incoming line In a button telephone apparatus having a transfer function of making a call to a preset transfer destination via a call, connecting the incoming call outside line and the outgoing call outside line and transferring the incoming call to the outgoing call line,
The main unit is
Detecting means for detecting information of an incoming call interrupter arriving at the incoming external line along with the incoming interrupt call upon arrival of an incoming call to the incoming external line during a call based on the transfer function;
A connection means for sending a switching signal to the incoming call external line and connecting an incoming call interruption to the outgoing call line;
A key telephone apparatus comprising: control means for controlling the connection means based on information of an incoming call interrupter detected by the detection means. In claim 1,
The main unit is
Storage means for storing a transfer rejection number for rejecting the transfer of the incoming call interruption call,
The control unit is configured to prevent transfer of the incoming interrupt call to a transfer destination when it detects a match between a telephone number indicating the information of the incoming interrupter and a transfer rejection number of the storage unit. A button telephone device. In claim 1,
The main unit is
A table for storing priorities of incoming calls to the forwarding destination;
A switching signal sending means for sending a switching signal to the incoming call outside line;
Message signal sending means for sending a predetermined message signal to the incoming call outside line,
The control means includes
A discriminating means for discriminating an incoming call priority order between the forwarding destination, the first destination in communication with the forwarding destination, and the second destination indicating the incoming call interrupter according to the information in the table; ,
When the determining means determines that the second destination is low in incoming call priority, the switching signal sending means sends a switching signal to the incoming call outside line to connect to the second destination and send the message signal. A predetermined message signal is sent from the means to the second destination, and after the message signal is sent, the switching signal is sent from the switching signal sending means to the incoming line and connected to the first destination. Call continuation means to continue the call between the other party and the forwarding destination,
When the end of the ongoing call is detected, a switching signal is sent from the switching signal sending means to the incoming call outside line to connect to the second destination, and the second destination is connected to the incoming call outside line. If the second destination is not connected to the incoming call outside line, the connection between the incoming call outside line and the outgoing call outside line is disconnected, and the incoming call outside line and the outgoing call are sent. A key telephone apparatus comprising a transfer call end means for releasing an external line.

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