JP2002044243A - Key telephone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to transfer a receive interrupt call without damaging a receive rejection function or a receive precedence function as an essential function of a key telephone when a call ID notice function is applied to receive interrupt during transfer call of the key telephone. SOLUTION: When a calling person (C) calls and a receive interrupt call arrives at a receive line wire during engagement in call between a sender (A) and a transfer destination (B) through a receiving line wire 11A and a sending line wire 11B, a main unit 10 controls so that the receive interrupt from the calling person (C) is not transferred to the transfer destination if the call ID corresponds with a transfer rejection number of a table. When the call ID doesn' t correspond with the transfer rejection number, each receive precedence order of the sender (A) and the calling person (C) is compared on the basis to the stored information of the table 16C, and a transfer process takes place corresponding to the compared result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key telephone apparatus having an incoming call transfer function.

[0002]

2. Description of the Related Art In a key telephone apparatus of this kind, in which a plurality of external lines are accommodated in a main unit having an exchange function and a plurality of key telephones are accommodated in the main unit as extension telephones, a function of transferring a call is provided. Some have. The key telephone apparatus having such a transfer function divides a plurality of external lines accommodated in the main apparatus into an incoming call external line and an outgoing external line in advance, and when an incoming call from the calling side arrives at the incoming external line, the main apparatus. Transmits a telephone number registered in advance as a transfer destination from an external line for transmission. When detecting the response of the transfer destination to the outgoing call, the main apparatus automatically responds to the incoming call of the incoming call outside line and connects the outgoing call outside line and the incoming call outside line. Thus, the calling side and the transfer destination are connected to each other via the main device, and the call between the calling side and the transfer destination can be performed.

On the other hand, a switching network accommodating such a key telephone apparatus provides an incoming call interruption service called a call waiting (registered trademark) service which enables an incoming call interruption 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 this user during an external call by the user of this key telephone device, the call is transmitted from the switching network side. An incoming call is notified to an outside line. In this case, a user who is using the outside telephone call of the key telephone apparatus notices the incoming call and performs a predetermined operation to respond to the incoming call.

[0004]

In recent years, there has been provided a service for notifying the receiving side of the ID (caller telephone number) of the calling side from the switching network at the time of receiving a call. Is notified of the caller's telephone number, and the called side can easily recognize who the caller is before answering the incoming call. There is a demand to apply such a caller telephone number notification function to the incoming call interruption during the above-mentioned transfer call in the key telephone apparatus. In such a case, the original function of the key telephone apparatus is a call rejection function, There is a problem that a problem occurs 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 calling ID notification function is applied at the time of an incoming call interruption during a transfer call in the key telephone device. An object of the present invention is to enable the transfer of the incoming call.

[0005]

According to the present invention, a key telephone is accommodated in a main unit, and a plurality of telephones set in advance as one of an incoming line and an outgoing line are provided. Is accommodated in the main unit, and when an incoming call of the incoming line is detected, a call is transmitted to a preset transfer destination via the outgoing line, and the incoming call is connected by connecting the incoming line and the outgoing line. In a key telephone device having a transfer function of transferring to an outgoing call line, the main device transmits a call to the incoming call line to the incoming call line based on the transfer function. Detecting means for detecting the information of the incoming call interrupter, connecting means for sending a switching signal to the incoming call outside line and connecting the incoming call to the outgoing call line, and detecting the incoming call interrupter detected by the detecting means. A system that controls connection means based on information And has a means. Also,
The main device has storage means for storing a transfer rejection number for rejecting the transfer of the incoming interrupt call, and the control means stores the transfer rejection number of the storage means with the telephone number indicating the information of the incoming interrupter. When a match is detected, the incoming interrupt call is not transferred to the transfer destination.

[0006] Further, the main unit includes a table for storing the priority of the incoming call to the transfer destination, a switch signal transmitting means for transmitting a switch signal to the incoming call external line, and a message for transmitting a predetermined message signal to the incoming call external line. Signal transmitting means, and the control means, when an incoming call is interrupted, sets a table of incoming call priorities between the transfer destination, the first caller who is talking, and the second caller indicating the call interrupter. And a switching signal is transmitted from the switching signal transmitting means to the outside line for incoming calls when the second receiving party determines that the incoming call priority is low. And a predetermined message signal is transmitted from the message signal transmitting means to the second destination, and after transmitting the message signal, a switching signal is transmitted from the switching signal transmitting means to the external line for incoming call so as to be transmitted to the first destination. Ahead A call continuation means for continuing the call between the first destination and the transfer destination, and a switching signal transmitting means for transmitting a switching signal from the switching signal transmitting means to the outside line for receiving when the end of the ongoing conversation is detected. Connection is made with the destination, and a call is made to the transfer destination when the second destination is connected to the incoming line, while an incoming call is made when the second destination is not connected to the incoming line. And a transfer call ending means for disconnecting the connection between the outside line and the outgoing line and opening the incoming line and the outgoing line.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the key telephone apparatus according to the present invention. This key telephone device
A main device 10 that accommodates an external line group 11 composed 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 slave units) accommodated in the main device 10
20A to 20N.

Main unit 10 includes an external line I / F unit 12 which is an interface of external line group 11, and a plurality of slave units 20A to 20A.
N, an extension I / F unit 13 which is an interface of N, an exchange processing unit 14 which is a communication path switch for connecting a communication path between each external line in the external line group 11 and the slave units 20A to 20N, and each unit in the main device 10. And a main storage unit 16 for storing various data. The main device 10
Contains the calling party's telephone number (hereinafter, calling ID)
Receiving section 17, a flash transmitting section 18 for transmitting a flash signal indicating a switching signal to an external line, and a message transmitting section 1 for transmitting a predetermined message signal to an external line.
9 are provided.

On the other hand, the slave units 20A to 20N respectively
A transmission I / F unit 21 for performing data transmission with the main device 10,
Communication circuit 22 and slave unit control unit 23 for controlling each unit of the slave unit
And an operation input unit 24 such as a dial key and an outside line key, a display unit 25, and a memory 26.

By the way, the key telephone apparatus sets the outside line 11A as a receiving outside line and the outside line 11B as a calling outside line among the accommodated outside line group 11, as shown in FIG. 2 described later, and receives an incoming call to the outside line 11A. When it arrives, the main device 10
The telephone number of the transfer destination stored in the main storage unit 16 is transmitted via the outgoing line 11B, and when the transfer destination responds to the outgoing call, the telephone responds to the incoming call of the incoming line 11A and receives the incoming call. It has an incoming call transfer function that connects the outside line 11A and the outgoing outside line 11B to enable a call between the calling side and the transfer destination.

The transfer function of the key 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 outside line 11A of the key telephone apparatus 5, an incoming call based on this call arrives at the outside line 11A. Here, the incoming call is always notified to, for example, the user of the slave 20A, and the incoming response operation of the user of the slave 20A causes
Caller A can talk to the user of handset 20A. However, when the user of the handset 20A travels on a business trip to a remote place, the outside line 11A is set for incoming calls,
In addition, the outside line 11B is set for outgoing calls, and the telephone number of the remote telephone terminal used by the user of the slave unit 20A is stored in the main storage unit 16 as the transfer destination B telephone number.

In such a case, when an incoming call arrives at the outside line 11A, the main control unit 15 in the main unit 10 sends the outside line I / F unit 1
2 to capture the outside line 11B for transmission, read the telephone number of the transfer destination B stored in the table 16A of the main storage unit 16 shown in FIG. 3 and send it to the outside line I / F unit 12. Is transmitted to the outgoing line 11B as a dial signal, and a call is made to the transfer destination B telephone terminal. When a response of the terminal of the transfer destination B to this call is detected via the external line I / F 12, the main control unit 15 automatically responds to the incoming call of the incoming line 11A and also exchanges the call with the exchange processing unit 1 shown in FIG.
4 to connect a call path between the incoming line 11A and the outgoing line 11B. Thus, the caller A and the transfer destination B
You can talk with

During such an outside line transfer call, the caller C shown in FIG. 2 calls the telephone number of the receiving outside line 11A of the key telephone apparatus 5 in order to make a call with the user of the handset 20A. Then, when the incoming line 11A has subscribed to an incoming call interruption service called a call waiting service, the incoming call arrives from the switching network 1 to the incoming line 11A during a call. If the caller C has subscribed to the caller ID notification function service, the telephone number of the caller C is used as the caller ID from the switching network 1 via the incoming line 11A during the call interruption. Notified to the side.

In this case, the main control unit 15 of the main device 10
When the incoming call interruption is detected via the outside line I / F unit 12,
The information receiving unit 1 is notified by the switching network 1 at the time of this incoming call interruption.
Enter the caller ID received in step 7. The main control unit 15 stores the input source ID in the table 1 shown in FIG.
It is determined whether or not it matches the transfer rejection number stored in 6B, and if it matches, no processing is performed for this incoming call interruption.

On the other hand, if the input calling ID does not match the transfer refusal number in the table 16B, the main control unit 15 next refers to the incoming call priority in the table 16 shown in FIG. Then, the priority of the input caller ID of the caller C and the telephone number of the caller A during the call are compared. In this case, the main control unit 15 determines the order of priority (in the table 16C of FIG. 3, the order of priority is from highest to lowest →→→
) Is performed.

FIGS. 4 and 5 are sequence diagrams showing the operation of the incoming call interruption during the above-mentioned outside line transfer call. Here, FIG. 4 shows an operation when the caller A has a higher call priority than the caller C, and FIG. 5 shows a case where the caller C has a higher call priority than the caller A. It shows the operation of.

First, the incoming call interruption operation during an outside line transfer call will be described in detail with reference to the sequence diagram of FIG. When an incoming call based on the call of the caller A arrives at the incoming line 11A, the main control unit 15 in the main device 10 controls the outside line I / F unit 12 to capture the outgoing line 11B and store the main memory. Part 16
The call to the transfer destination B is performed by reading the telephone number of the transfer destination B stored in the table 16A and making a dial call via the outgoing line 11B. Upon detecting a response from the transfer destination B to this call, the main control unit 15 controls the external line I / F unit 12 to capture the incoming line 11A, automatically answer the incoming call, and control the exchange processing unit 14. A call path is connected between the incoming line 11A and the outgoing line 11B. As a result, an outside line transfer call between the caller A and the transfer destination B is performed in step S1.

When the caller A and the transfer destination B are performing an external line transfer call via the incoming line 11A and the outgoing line 11B, a new caller C calls the transfer destination B. Then, an incoming call interrupt arrives at the incoming line 11A (step S2), and the main control unit 15 of the main device 10 performs a process of detecting the incoming call interrupt at step S3. In the incoming call interruption detection process, the main control unit 15 compares the calling ID of the caller C detected at the time of the incoming call interruption with the transfer rejection number in the table 16B in the main storage unit 16, and determines whether or not the transfer is possible. Is performed in step S4, and the calling ID of the caller C is checked.
If does not match the transfer refusal number, in step S5, processing is performed so as not to transfer the incoming interrupted call of the caller C to the transfer destination B, and the process ends.

On the other hand, the calling ID of the caller C and the table 16B
If the transfer refusal number does not match, the main control unit 15 first causes the hold sound source (not shown) to transmit a hold sound to the transfer destination B in step S6. Thereafter, the main control unit 15 determines the calling ID of the caller C based on the table 16C in the main storage unit 16.
And the caller ID of the caller A who is talking to the transfer destination B (which is received in advance when the call arrives at the transfer destination B and stored in a predetermined area of the main storage unit 16). The process of determining is performed in step S7.

If the main control unit 15 determines that the caller A has a higher priority, the main control unit 15 controls the flash transmission unit 18 in step S8 to thereby control the incoming call outside line 11.
A, a flash signal is sent to the switching network 1 to cause the switching network 1 to switch the incoming line 11A.
Make a connection between them. Thereafter, the main control unit 15 drives the message sending unit 19 to send, for example, a message indicating that "calling now" to the outside line I / F unit 12. This message is transmitted to the calling party C via the incoming line 11A and the switching network 1, and is heard by the calling party C.

After sending the message, the main control unit 15
In step S10, the hold release for stopping the transmission of the hold tone to the transfer destination B is performed, and in step S11, the flash sending unit 18 is controlled to send a flash signal to the incoming line 11A to send the flash signal to the switching network 1. External line 1 for incoming calls
1A is switched, and the caller A and the external line I / F unit 12 are reconnected. Thus, the transfer call between the caller A and the transfer destination B is restarted in step S12.

During such a transfer call, the main control unit 15 executes a call termination detecting process for detecting a busy tone from the incoming line 11A based on the call termination of the caller A in step S13. When A detects a busy tone from the incoming line 11A through the end line outside line I / F unit 12,
In step S14, a call termination process is performed. Then, by controlling the flash transmission unit 18 in step S15 during the call termination processing, a flash signal is transmitted to the external line 11A for the incoming call, and the switching network 1 is switched to the external line 11A for the incoming call. Caller C who made the call and the outside line I / F unit 12
Let them reconnect. Here, the caller C who performed the incoming call interruption
If a call is already abandoned and a busy tone from the switching network 1 is detected, the main control unit 15 controls the external line I / F unit 12 to release the incoming external line 11A and the outgoing external line 11B, and , The exchange processing unit 14 to control the
The communication path between 1A and the outgoing line 11B is disconnected (step S16).

On the other hand, if the caller C who has performed the incoming call interruption has not abandoned the call and, therefore, no busy tone is detected from the switching network 1, the main controller 15 sets the caller A and the transfer destination Assuming that the caller C has been on standby until the call with B ends, a call is made between the caller C and the transfer destination B (steps S16 and S17). Thereafter, when a busy tone based on the termination of the caller C is detected, the incoming line 11A and the outgoing line 11B are opened and the incoming line 11A is opened.
The call path between the call and the external line for transmission 11B is disconnected.

Next, the incoming call interrupting operation during the outside 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 performed the incoming call interruption has a higher incoming call priority than the caller A who is already transferring the call, as described above. Here, steps S1 to S7 in FIG.
Is similar to the operation of steps S1 to S7 in FIG. 4 already described, and a specific description thereof will be omitted. If a new caller C calls the transfer destination B while the caller A and the transfer destination B are performing an outside line transfer call, step S3 is performed.
After the incoming call interrupt detection process of step S4 and the transfer refusal check process of step S4, based on the setting contents of the table 16C in step S7, the caller ID of the caller A who is talking to the transfer destination B (when the caller The received priority is determined between the received call and stored in a predetermined area of the main storage unit 16) and the caller ID of the caller C who has newly performed the incoming call interruption.

If the main control unit 15 determines that the caller C has a higher priority, the main control unit 15 drives the message sending unit 19 in step S21 to, for example, say, "An incoming call has just been interrupted. Please wait for a while, as we will talk to the incoming call interrupter. " This message is transmitted to the calling party A via the incoming line 11A and the switching network 1, and is heard by the calling party A.

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 thereby control the incoming call outside line 11A. A flash signal is sent to the switching network 1 to switch the incoming line 11A, thereby connecting the caller C to the outside line I / F unit 12.
Thereby, the transfer destination B shifts from the call with the caller A to the call with the new caller C (step S24).

During the call between the transfer destination B and the caller C, the main control unit 15 performs a call end detection process for detecting a busy tone from the incoming line 11A based on the call end of the caller C in step S25. Executing and calling party C terminates the outside line I
When the busy tone from the incoming line 11A is detected via the / F unit 12, the call termination processing is performed in step S26.
Then, by controlling the flash sending unit 18 in step S27 during this call termination processing, the outside line 1 for incoming calls is controlled.
A flash signal is transmitted to the switching network 1A to cause the switching network 1 to switch the incoming line 11A.
And the external line I / F unit 12 are reconnected. Here, if the original caller, caller A, has already abandoned the call and a busy tone from the switching network 1 has been detected, the main control unit 15 controls the external line I / F unit 12. The incoming line 11A and the outgoing line 11B are opened, and the switching unit 14 is controlled to disconnect the communication path between the incoming line 11A and the outgoing line 11B (step S28).

On the other hand, if the 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 sets the call as the incoming interrupter. Assuming that the caller A has been on standby until the call between the caller C and the transfer destination B is completed, the call between the caller A and the transfer destination B is restarted (steps S28 and S29). Thereafter, when a busy tone based on the termination of the caller A is detected, the outside line for incoming call 11A and the outside line for outgoing call 11B are opened, and the communication path between the outside line for incoming call 11A and the outside line for outgoing call 11B is cut off.

[0029]

As described above, according to the present invention, a key telephone is accommodated in a main unit and a plurality of external lines set in advance as one of an incoming line and an outgoing line are set in the main unit. When an incoming call of an incoming line is detected, the call is transmitted to a preset destination via the outgoing line, and the incoming call is connected to the outgoing line to transfer the incoming call to the outgoing line. In the key telephone apparatus having the transfer function, the main unit is configured to control an incoming call that arrives at the incoming call outside line along with the incoming call when the incoming call arrives at the incoming call outside line during a call based on the transfer function. Detecting means for detecting information such as the calling ID of the incoming call, and connecting means for transmitting a switching signal to the external line for incoming call and connecting the incoming call to the external line for outgoing call. Controls the connection means based on the information and switches the incoming call When a caller ID notification function is applied at the time of an incoming call interruption during a transfer call of a key telephone device having a call rejection function and a call priority function, the key telephone device originally has its own The transfer of the incoming interrupt call can be appropriately restricted according to the function, and therefore, only the incoming interrupt call desired by the transfer destination can be accurately transferred to the transfer destination. Further, the main unit does not forward the incoming call to the transfer destination when the transmission ID indicating the information of the incoming interrupter matches the transfer rejection number stored in advance. Unnecessary transfer of an incoming interrupted call can be prevented.

Further, at the time of the incoming call interruption, the main unit determines the incoming call priority between the first destination that is in communication with the transfer destination and the second destination that indicates the incoming call interrupter. When it is determined that the other party has a lower incoming call priority, a switching signal is sent to the incoming line to connect to the second party and a predetermined message signal is sent to the second party. After the transmission of the message signal, the switching signal is transmitted to the external line for incoming call 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 transmitted to the external line for incoming call. A connection is established with a second destination, and when the second destination is connected to an incoming line, a call is made to the transfer destination, and the second destination is not connected to the incoming line. In such a case, disconnect the connection between the incoming line and the outgoing line, and Since the outside line is opened, even if there is an incoming call interruption from a lower priority party during a call with a higher priority party, it is possible to send a predetermined message to the other party and make it stand by. When the call with the other party having the higher priority is completed, the call can be made with the other party on standby.

[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 key telephone device.

FIG. 3 is a diagram showing a configuration of a table provided in a main storage unit of the key telephone apparatus.

FIG. 4 is a sequence diagram showing an operation of a main part of the key telephone apparatus.

FIG. 5 is a sequence diagram showing an operation of a main part of the key telephone apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Switching network, 5 ... Key telephone apparatus, 10 ... Main apparatus, 11
.. Outside line group, 11A, 11B ... outside line, 12 ... outside line I / F
Unit 13, extension I / F unit 14, exchange processing unit 15, main control unit 16, main storage unit 16A transfer destination telephone number table 16B transfer rejection telephone number table 16C reception priority telephone Number table, 17 ... information receiving unit, 18
... Flash sending unit, 19 ... Message sending unit, 20A
-20N: Key telephone (child unit), A, C: Caller, B
…Forwarding destination.

Claims (3)

[Claims] 1. A key telephone is accommodated in a main unit, and a plurality of external lines set in advance as one of an incoming line and an outgoing line are accommodated in the main unit, and an incoming call of the incoming line is received. Upon detection, the key telephone device having a transfer function of transmitting a call to a preset transfer destination via a transmission external line, connecting the reception external line and the transmission external line, and transferring an incoming call to the transmission external line. Detecting means for detecting information of an incoming interrupter arriving at the incoming call external line along with the incoming call at the time of the incoming interrupt call to the incoming call external line during the call based on the transfer function; Connecting means for sending a switching signal to the incoming call outside line and connecting the incoming call to the outgoing call line; control means for controlling the connecting means based on the information of the incoming call interrupter detected by the detecting means; It is characterized by having That key telephone system. 2. The incoming call interrupter according to claim 1, wherein the main unit further comprises a storage unit for storing a transfer rejection number for rejecting the transfer of the incoming interrupt call, and the control unit stores information on the incoming interrupter. The key telephone device is characterized in that, when a match between the telephone number indicating the above and the transfer rejection number in the storage means is detected, the transfer of the incoming call interruption transfer to the transfer destination is prevented. 3. The external device according to claim 1, wherein the main device includes a table storing priority of incoming calls to the transfer destination, a switch signal transmitting unit for transmitting a switch signal to an external line for incoming calls, and a predetermined signal to the external line for incoming calls. Message signal transmitting means for transmitting a message signal of the following, wherein the control means, at the time of the incoming call interruption, a first destination which is in communication with the transfer destination and a second destination indicating the incoming call interrupter Determining means for determining the incoming call priority between the first and second parties according to the information in the table; and when the determining means determines that the second destination has a low incoming call priority, a switching signal is output from the switching signal transmitting means. An external line for incoming call is connected to a second destination, and a predetermined message signal is transmitted from the message signal transmitting means to the second destination. A call continuation unit for transmitting a switching signal from the transmission unit to an external line for receiving a call to connect to the first destination and continue the call between the first destination and the transfer destination; and detect an end of the ongoing call. Then, a switching signal is transmitted from the switching signal transmitting means to the external line for incoming call to establish connection with the second destination, and when the second destination is connected to the external line for incoming call, the telephone call with the transfer destination is made. On the other hand, if the second destination is not connected to the incoming call line, the call between the incoming call line and the outgoing call line is cut off, and the transfer call ending means for releasing the incoming call line and the outgoing call line is provided. A key telephone device comprising: