JPH10178662A - Telephone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display without using a large display device by changing the display of an originating ID based on a prescribed operation on a receiver side about plural IDs which are simultaneously notified from plural line wires that have a notification function of an originating ID. SOLUTION: When a telephone exchange main unit 1 that contains line wires L1 to Ln which have an originating ID notification function detects a start signal of a line wire L by line wire state-supervisory circuits 121 to 12n , it connects the line wire to a free originating ID receiving circuit 14 and makes it receive an originating ID. The received originating ID is transmitted to a slave unit TEL via a telephone interface 17 and shown on an LCD of a display part 23 of the slave unit. Here, when plural originating IDs are simultaneously notified thorough plural line wires, the priority of originating IDs that are shown on each slave unit TEL is decided according to the priority of an incoming state table that is provided in memory 16. Then, each slave unit TEL shows only one originating ID. Each slave unit designates a line wire number with a line wire key 25 and can change an order.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone device capable of receiving a telephone number of a caller when receiving a call.

[0002]

2. Description of the Related Art In general, a digital switching network such as an ISDN network has a function of notifying a receiving terminal of a caller's telephone number at the time of an incoming call. A telephone number (hereinafter, calling ID) notification service is under consideration. The caller ID notification sequence in such an analog switching network is as follows.
That is, when the caller calls the destination, the exchange first transmits a reversal signal to the terminating terminal via an external line such as a central office line, and transmits a terminal start signal having a frequency of 16 Hz to the external line for a short time. I do. When the receiving terminal detects the reversal signal and the activation signal, closes the DC loop of the external line, and responds primary,
The exchange transmits the calling ID to the receiving terminal by a modem signal. When the DC loop of the external line that has been closed on the receiving terminal side that has received the calling ID is opened, the exchange determines that the receiving ID has been received, and sends a 16-Hz incoming signal (call signal) to the receiving terminal. I send it out.

[0003]

By the way, it is common practice to display the telephone number of the destination at the time of making a call on the display section of the telephone. However, such a telephone is simultaneously notified from a plurality of outside lines. Even if an attempt is made to display the generated ID, only a limited number of IDs can be displayed on the display unit. For this reason, if the number of external lines accommodated in the device increases, a display device having a large display area must be used, which causes a problem that the size of the telephone increases and the cost of the telephone increases. Therefore, an object of the present invention is to make it possible to display IDs from a plurality of external lines without using a large-sized display.

[0004]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention relates to a telephone apparatus accommodating a plurality of external lines having a calling ID notification function and accommodating a telephone having a display unit. When an incoming call arrives at two or more external lines at the same time (that is, for example, when an incoming call arrives at the external line L1 and the external line L2 at the same time, or when an incoming call arrives at the external line L1 and a new incoming call arrives at the external line L2). ), A receiving unit for receiving the calling ID notified from each outside line, a display control means for displaying the received calling ID on the display unit of the telephone, and a calling control of the display unit based on a predetermined operation of the telephone.
Display change means for changing the display of D. Therefore, since the change of the calling ID can be displayed on the telephone side, the calling ID from a plurality of external lines can be used without using a large display.
D can be displayed. Further, the display of the calling ID on the display unit is changed based on a key operation for designating an incoming call outside line. As a result,
One source ID can be accurately selected from the received source IDs and displayed on the display unit. In addition, when an outside line capturing operation is detected, the incoming outside line corresponding to the calling ID displayed on the display unit is captured and the incoming call is answered, so that the telephone can accurately answer the incoming call to a desired party. .

[0005]

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 telephone device according to the present invention. This telephone device has a plurality of external lines L
1 to Ln, and a plurality of telephones (hereinafter referred to as "child units") TEL1 to TELm, for exchange connection between an external line and a child unit or between each child unit.

[0006] The main unit 1 of the telephone device includes an external line L1.
Ln are provided with external line interfaces 111 to 11n for detecting an incoming call, capturing an external line, dialing, etc., and each external line interface is connected to a line switching circuit 13 such as a communication path switch or a telephone interface to be described later. It is configured to be connected to TEL1 to TELm. Then, the external line interfaces 111 to 11n and the line switching circuit 13 are controlled by the CPU 15, and exchange connection processing between the external line and the child device or between the child devices is performed.

Further, switch circuits 18 and 19 are connected to each of the external lines L1 to Ln, and the output sides of the switch circuits 18 and 19 are connected to the external line state monitoring circuit 12 and the source ID receiving circuit 14, respectively. . Here, the external line state monitoring circuit 11 is a circuit for detecting reversal and reversion of the external line L, and the source ID receiving circuit 14 is configured by a modem.
It receives a calling ID transmitted from an exchange (not shown) via an external line when receiving a call. In other words, this telephone device accommodates a plurality of external lines L1 to Ln to which a caller ID is notified from the exchange side at the time of an incoming call.
By controlling 8, 19, the source ID can be received by the source ID receiving circuits of a number smaller than the number of external lines accommodated.

Here, when the caller calls the destination, the exchange first sends a reversal signal to the outside line L, and
A terminal start signal having a frequency of 6 Hz is transmitted for a short time. Then, the CPU 15 controls the switch circuit 18 to connect the external line L1 and the external line state monitoring circuit 12 to detect the reversal from the external line state monitoring circuit 12 and to connect the external line L1 to the external line state monitoring circuit 12 via the external line state monitoring circuit 12. Performs polarity reversal detection. At this time, if the inversion cannot be detected, the switch circuit 18
To connect the external line L2 and the external line state monitoring circuit 12,
Similarly, the reversal detection of the outside line L2 is performed. Such a CPU 15
The selective connection between each external line L and the external line state monitoring circuit 12 under the control of the switch circuit 18 is sequentially performed until the inversion is detected from the external line. When the reversal of the corresponding external line is detected via the external line state monitoring circuit 12, the CPU 15
Detects a terminal activation signal via the incoming line detection circuit of the external line interface 11 connected to the relevant external line where the reversal signal is detected, and after detecting this, controls the external line interface 11 to loop the external line. By closing, the primary response signal is returned to the exchange. Also, at this time, the CP
U15 is an external line in which reversal has been detected and the source ID receiving circuit 14
The switching control of the switch circuit 19 is performed so that is connected.

When the primary response signal is transmitted from the telephone device, the exchange sends the calling ID to the external line by a modem signal. Then, the calling ID is received by the calling ID receiving circuit 14 connected to the external line via the switch circuit 19. In this case, the CPU 15
D is input from the calling ID receiving circuit 14 and stored in a memory (not shown), and the number is displayed on the slave unit TEL. When the reception and input of the calling ID are completed, the loop of the corresponding outside line is released. Then, the exchange judges that the reception of the calling ID has been completed and sends an incoming signal (call signal) to the corresponding external line. Thus, the incoming signal is detected by the CPU 15 via the corresponding external line interface 11. Then, the incoming data is sent from the CPU 15 to the slave unit TEL, and the slave unit TEL rings. Here, when any of the slave units TEL responds to the incoming call, the DC loop of the corresponding external line is closed and a secondary response signal is sent to the exchange side, the exchange depolarizes the external line. In this manner, even when a plurality of external lines L1 to Ln for which the calling ID is notified are accommodated, the switching circuits 18 and 19 are sequentially switched and selected, so that the outside line state monitoring circuit 12 and the issuing ID which are less than the number of accommodated outside lines are accommodated. In the receiving circuit 14,
Detection of reversion and reception of the calling ID become possible.

FIG. 2 shows an external line L having a calling ID notification function.
1 is a block diagram showing an example in which a telephone device containing 1 to Ln is applied to a key telephone device. This telephone device is an example in which external line condition monitoring circuits 121 to 12n are connected to external lines L1 to Ln, and output ID receiving circuits 141 to 14x which are smaller in the number of accommodated external lines are connected to the output side of the circuit switching circuit 13. . In this case, the CPU 15 of the telephone device detects a reversal by the external line state monitoring circuit 12 when the external line L arrives, and inputs a start signal via the external line interface 11 to activate the DC loop of the external line. The connection is closed, the primary response signal is transmitted, and the circuit switching circuit 13 is controlled to connect the path between the corresponding external line L and the vacant calling ID receiving circuit 14 among the calling ID receiving circuits 141 to 14x. A caller ID from an outside line is received. In this way, I
Number of source IDs less than the number of external lines that have the notification function of D
A receiving circuit can receive a calling ID from each external line.

Note that the handset TEL, which is a key telephone,
The control unit 21 and the transmission circuit 2 that performs transmission with the main device 1
2. A display unit 2 including an external line lamp provided for each external line and illuminated in red or green and an LCD for displaying a calling ID.
3, a communication circuit 24, an external line key 25, a dial key 26, a function key 27 such as a hold key provided near the external line lamp corresponding to each external line, a hook switch HS and the like.

[0012] In the device configured as described above, the CP
U15 is an external line state monitoring circuit 12, an external line interface 1
When the switching signal and the start signal of the outside line L are detected via the communication line 1 and the primary response signal is returned to the exchange side, the circuit switching circuit 13 is controlled as described above, and the outside line and the free calling ID are output.
It connects to the receiving circuit 14 and causes the vacant calling ID receiving circuit 14 to receive the calling ID sent from the exchange. Then, the received calling ID is input and transmitted to the slave unit TEL via the telephone interface 17, and the LC of the display unit 23 of the slave unit is displayed.
D is displayed, and then the loop of the corresponding outside line is released.
Then, the exchange sends an incoming signal to the corresponding outside line. When the incoming signal is detected, the CPU 15 transmits the incoming data to the slave TEL via the telephone interface 17. As a result, in the slave unit TEL, the corresponding outside line lamp on the display unit 23 blinks, and a buzzer (not shown) rings.

On the LCD of the display unit 23 of the slave unit TEL for displaying the calling ID, a calling ID from an outside line that can respond to an incoming call is usually displayed. Here, a case where a plurality of calling IDs are simultaneously notified from the exchange via a plurality of outside lines (that is, for example, a case where an incoming call arrives at the outside line L1 and the outside line L2 at the same time and the calling IDs are simultaneously notified from the outside lines L1 and L2) Alternatively, when the incoming call arrives at the external line L1 and the calling ID is notified, and a new incoming call arrives at the external line L2 and the calling ID is notified from the external line L2 while the incoming call of the external line L1 continues, the response is possible. Even if an attempt is made to display a plurality of calling IDs, all received calling IDs are limited due to the limitation of the display capacity of the LCD.
D cannot be displayed. Therefore, each table as shown in FIG. 4 is provided in the memory 16 in the main device 1, and the priority order of the calling ID displayed on each slave unit TEL is determined. That is, first, an incoming state table as shown in FIG. 4A is provided in the memory 16 so that the presence or absence of an incoming call and the calling ID can be stored for each local line (outside line). Here, if the value of the receiving state area corresponding to the corresponding outside line is "1", the corresponding outside line indicates that the incoming call is being received, and the calling ID received from this outside line at this time.
Are stored in the corresponding caller number area. If the value of the receiving state area is "0", the external line is not receiving a call. At this time, the caller ID area has a hexadecimal value "FFF ..." indicating that the calling ID is not stored. F ”is stored.

Next, FIG. 4B is a caller number display management table, in which the office line of the calling ID displayed on the LCD of the slave unit is stored corresponding to each slave unit TEL. This table stores the office line number (external line number) of the earliest incoming call among the incoming calls that can be answered by each slave unit. As will be described later, the external line number can be changed by a change request from the slave unit. In this example, the outside lines L3, L
When the incoming call arrives in the order of 1, the slave units TEL1, TEL
3. In TELm, the display of the calling ID of the outer line L3 that arrives first is continued, but in the slave unit TEL2, the calling ID of the outer line L3 is switched to the calling ID of the outer line L1 and displayed by the change request. An example is shown. FIG. 4 (c)
Is an incoming call priority table, and shows the numbers of the office lines for which the calling ID should be displayed with priority. In this table, the priorities are determined in the order of incoming calls. In this table, the calling ID received from the external line L3 which has received the earliest call has the highest display priority, and the order of the external line L1 which has received the next incoming call. "0" in the line number column indicates that a call is not being received.

As shown in FIG. 4D, when the incoming signal of the external line L3 is not received due to the response of the slave unit or the abandonment of the call by the caller while the external lines L3 and L1 are being received. Thus, the calling ID of the outside line L3 is deleted from the incoming call state table, and the incoming call state is updated to “0” indicating non-receiving. Also, the incoming call priority table is updated so that the outside line L1 during the incoming call has the highest priority, as shown in FIG. Further, the caller ID display management table is also shown in FIG.
As shown in (e), the calling ID from the outside line L1 is
Updated to display L1, TEL3, TELm,
Display data according to the management table is transmitted to each of the slave units TEL1, TEL3, TELm and displayed on the LCD.

On the other hand, when a new incoming call arrives at the outside line L2 and the calling ID is notified from the outside line L2 while the outside lines L3 and L1 are incoming, as shown in FIG. The calling ID “03111111” corresponding to the outside line number
11 "is stored, and the incoming call state is set to" 1 "indicating that an incoming call is being received. Next, as shown in FIG. 4 (i), the incoming call priority table also includes the external line L3, the external line L1 and the external line L1.
2 is also set. In this case, each slave unit TEL1
~ TELm's LCD shows the calling ID received from the first outside line
Is displayed, the calling number of the outside line L2 is not displayed.

As described above, by providing each of the incoming call state table, the caller ID display management table, and the incoming call priority table, only one caller ID according to the priority is displayed on the LCD of each slave unit TEL. You. Note that, by performing the above-described predetermined change operation by the slave unit TEL, it is possible to sequentially display a plurality of received caller IDs that can receive incoming calls on the LCD of the slave unit TEL.

Next, FIG. 3 is a flowchart showing the operation of the CPU 15 in the main unit 1 which accommodates the outside lines L1 to Ln having the calling ID notification function. This flowchart, FIG.
The operation of the main part of the present invention will be described in detail with reference to the block diagram of FIG. First, in order to detect the state of each of the accommodated outside lines L1 to Ln, step S
Set the outside line number with 1. In this case, first, a number corresponding to the outside line L1 is set in a register or the like, and the state detection processing for the selected outside line L1 is performed in step S2 and subsequent steps. That is, in step S2, the presence / absence of the reversal of the external line L1 is determined via the corresponding external line state monitoring circuit 121. If the result is "Y", the arrival of the start signal via the relevant external line interface 111 is confirmed. Further, the loop of the corresponding external line L1 is closed to transmit a primary response signal, and further, the circuit switching circuit 13 is controlled to connect the relevant external line L1 to a vacant calling ID receiving circuit.

Then, a receiving ID receiving process is performed in step S3 via the connected calling ID receiving circuit. Here, when the caller ID is received and the determination in step S4 is “Y”,
In step S5, it is determined whether or not there is an incoming call on another outside line with reference to the incoming call state table shown in FIG. Here, if there is no incoming call to another outside line, the incoming call management table is changed in step S6. That is, in the incoming call state table, the incoming call state is set to "1" corresponding to the corresponding outside line, and the calling ID is stored. FIG.
The number of the outside line is stored as the highest priority in the incoming call priority table of (c). Further, all the slave units TEL1 to TELm
Each of the slave units TEL1-TE in the management table of FIG. 4B is displayed so that the calling ID inputted from the outside line is displayed.
This outside line number is stored as the display outside line number for each Lm.

Thereafter, the flow shifts to step S7 to make a request for changing all the slave units. That is, in this case, the I
The external line number, the incoming call data indicating the incoming call state, and the calling ID are set in the transmission buffer for each slave unit so that D is displayed. Then, the transmission time for each of the slave units TEL1 to TELm has arrived, and the presence of the transmission process in step S8 is "Y".
Then, a transmission process for transmitting the external line number, the incoming call data and the calling ID stored in each transmission buffer to all the slaves is executed in step S9, and the transmitted external line number and the calling ID are transmitted.
D is stored in a memory (not shown) of each slave unit, and the calling ID is displayed on the LCD. Then, the process returns to step S1 to set the next outside line number, and performs the same processing for the next outside line L2 from step S2. Then, when the processing for the outside line L2 is completed, each outside line is sequentially selected such that the processing for the outside line L3 is performed next, and similar processing is performed. When the calling signal is transmitted after the calling ID is transmitted from the corresponding outside line, step S is executed.
In response to "Y" indicating that the transmission process of step 8 is performed, the transmission process of step S9 transmits lamp data indicating an incoming call display of the corresponding outside line to each slave unit, and causes the corresponding outside line lamp of each slave unit to blink, and
And make the buzzer ring. If the incoming call to the outside line cannot be answered by the slave unit, only the lamp data of the corresponding outside line is transmitted to such a slave unit without transmitting the calling ID.

Next, when the caller ID is received, if an incoming call has already been received on another external line, for example, the external line L3, and "Y" is obtained in step S5, the incoming call management table is changed in step S10. In this table change processing, the incoming call state is set to "1" in the incoming call state table corresponding to the external line L1 to which the outgoing call ID has been transmitted, and the outgoing call ID is stored. In addition, the number of the corresponding external line L1 is stored in the incoming call priority table of FIG. 4C, following the number of the external line L3 already stored. Thereafter, the process proceeds to step S7, and a request for changing all the slave units is made. That is, in this case, the corresponding outside line L1
Is set only in the transmission buffer for each slave unit so that the calling party ID is not displayed on the slave unit. Then, “Y” of “with transmission processing” in step S8
Then, in step S9, the external line number in each transmission buffer and the incoming call data are transmitted to all the slaves. And then
Returning to step S1, the next outside line number is set, and the processing after step S2 is similarly performed for the next outside line L2. In this case, when each of the slaves receives the outside line number and the incoming call data, it stores it in a memory (not shown) and does not display the data on the LCD. Then, when the external line lamp data indicating the incoming call state transmitted from the main device 1 is received at the time when the incoming signal is detected on the external line, the external line lamp blinks.

Next, in the caller number receiving process in step S3, if a reception error occurs and the determination in step S11 is "Y", the following process of changing the incoming call management table is performed in step S12. That is, the incoming call state is set to "1" in the table of FIG. However, in this case, the caller ID is not stored. Also,
The external line numbers are stored in the incoming call priority table of FIG. Further, when there is no incoming call to another outside line, the outside line number is stored in the table of FIG. 4B corresponding to each of the slave units TEL1 to TEL. Then, step S
In step 7, the external line number and incoming call data are set in the transmission buffer for each child unit, and a change request processing for all child units is performed. In response to "Y" in step S8, the contents of the transmission buffer are set in the transmission processing in step S9. Transmit to handset. Then, the process returns to step S1 to select the next outside line L2, and performs the same processing from step S2. In this case, when the external line lamp data indicating the incoming call state transmitted from the main device 1 is received at the time when the incoming signal is detected on the external line, the external line lamp blinks.

If the caller refuses to send the caller ID to the receiver, or if the outside line is a non-contracted line for which the caller ID notification has not been subscribed, the caller ID is not received in step S3. Can not receive. In such a case, the determination in step S13 becomes "N" after "N" in step S4. Also in this case, the incoming state is set to "1" in the table of FIG. 4A corresponding to the corresponding outside line, but the calling ID is not stored. Further, the outside line numbers are stored in the incoming call priority table of FIG. Furthermore, when there is no incoming call to another outside line, FIG.
Of the slave units TEL1 to TEL are stored in the table. Thereafter, an all-child-unit change request process of setting the outside line number and incoming call data in step S7 in the transmission buffer for each child unit is performed, and “Y” in step S8.
In step S9, the contents of the transmission buffer are transmitted to each slave unit. Then, the process returns to step S1 to select the next outside line L2, and performs the same processing from step S2. In this case as well, when the incoming signal is detected, only the corresponding outside line lamp blinks.

In the case where the calling ID cannot be received or the calling ID results in a receiving error, the calling ID is not displayed on the handset TEL, but the lamp of the corresponding outside line is received due to the arrival of the subsequent call signal. indicate. Then, in this case, when a response operation such as off-hook is performed on the slave unit TEL side, if the incoming line arrives first, the incoming call response of the external line is performed.

If no polarity is detected in the selected outside line L1 and the determination in step S2 is "N", then the outside line L1 is currently receiving a call and at this time, the calling side abandons the transmission. It is determined in step S15 whether or not the incoming call has stopped. If this is determined to be "Y", the process proceeds to step S16 to determine whether there is an incoming call on another external line, for example, the external line L3. Here, if there is no incoming call on the other outside line L3, in step S17, FIG.
In the incoming call state table, the incoming call state of the corresponding outside line is set to "0" to set the incoming call to the non-receiving state, and the calling ID is deleted. Further, the number of the outside line is deleted from the incoming call priority table of FIG. Further, the display of the calling ID of the outside line is erased for all the cordless handsets TEL1 to TELm so that the display of FIG.
The display outside line number of each slave unit TEL1 to TELm in the management table of (b) is set to “0”.

Thereafter, the flow shifts to step S18, where a request for changing all slave units is made. That is, in this case, the outside line number and the no-call data indicating that there is no incoming call are set in the transmission buffer so that the display of the calling ID is erased for all the slaves. Then, in response to "Y" indicating that the transmission process is performed in step S9, the transmission process of transmitting the outside line number and the no-call data stored in the transmission buffer to all the slaves is executed in step S9, and the calling ID is transmitted. Display is erased. Thereafter, the CPU 15 returns the process to step S1, sets the next outside line number, and proceeds to step S2 for the next outside line L2.
Thereafter, similar processing is performed. Note that the slave unit turns off the corresponding outside line lamp and stops ringing in addition to deleting the calling ID, based on the outside line number and the no-call incoming data.

On the other hand, if there is no incoming call on the outside line L1 and the incoming call continues on another outside line L3 and the determination in step S16 becomes "Y", the following incoming call management table change processing is executed in step S19. I do. That is, in this case, first, when the calling ID of another incoming line L3 being received is displayed on each slave unit, the calling ID corresponding to the outside line L1 is deleted from the table of FIG. Is set to "0" to set a non-receiving state. Also, the number corresponding to the outside line L1 is deleted from the incoming call priority table of FIG. Then, when the external line has a higher priority than the other external line that is continuing the incoming call, the incoming call priority table is updated so that the number of the other external line has a higher priority. Thereafter, the process proceeds to step S18, and a request for changing all the slave units is made. That is, in this case, if the priority of the other external line that is continuing the incoming call is high, the number of the external line where the incoming call is lost and the no-call data are set in the transmission buffer for each slave unit. If the priority of the corresponding outside line is higher, the number of the corresponding outside line, the no-call data and the calling ID are set in the transmission buffer for each slave unit. Subsequently, in order to display the calling ID of another external line that is continuing the incoming call on each slave unit, the number of the other external line, incoming call data, and calling ID are set in the transmission buffer.

Thereafter, in response to "Y" indicating that the transmission process is performed in step S8, a transmission process of transmitting data of each transmission buffer to all the slave units is executed in step S9. In this case, when each of the slaves receives the outside line number and the no-call data, only the corresponding outside line lamp is turned off. When the outside line number, the no-call data and the calling ID are received, the calling line ID is erased and the corresponding outside line lamp is turned off. And in this case,
Subsequently, upon receiving the number of the other external line that is continuing the incoming call, the incoming call data, and the calling ID, each slave unit displays the calling ID of the other external line on the LCD. After that, the CPU 15 of the main device 1 returns the processing to step S1, sets the next outside line number, and performs the same processing for the next outside line L2 from step S2.

Next, when a request for capturing the outside line L1 is made by, for example, performing an on-hook operation on the child device side, and the determination in step S20 is "Y", the outside line is being received and the outside line number is being received. It is determined in step S21 whether or not the calling ID corresponding to is displayed on the LCD of the child device.
To judge. Here, if the determination in step S21 is “Y”, a process of capturing the corresponding outside line L1 and responding to the incoming call is performed in step S22, and subsequently, in step S23.
To change the incoming call management table. If there is no incoming call on another outside line at this time, the incoming call management table changing process is the same as the process of step S17. At this time, if the incoming call continues to another outside line, the calling ID corresponding to the outside line L1 is obtained from the table of FIG.
Is erased, and the incoming call state is set to "0" to set a non-incoming call state. Further, the number corresponding to the outside line L1 is deleted from the incoming call priority table of FIG. 4C, and the number of the other external line being received is advanced to be set in the incoming call priority table. Further, in the management table of FIG. 4B, the number of another external line that is receiving a call is set for each slave unit.

Thereafter, the flow shifts to step S24 to make a request for changing all the slave units. The process of step S24 is performed as follows. In other words, for a slave unit other than the responding slave unit, if an incoming call does not continue to another outside line at the time of capturing an outside line, the number of the corresponding outside line, no incoming call data, and an outside line indicating an outside line busy state. The call state data is set in the transmission buffer. Also, when an incoming call to another external line is continuing during external line capture and the priority is higher than the corresponding external line, the same data is set in the transmission buffer. If the priority of the other external line that is continuing the incoming call is low, the number of the corresponding captured external line, the no-call data, the external line communication state data, and the calling ID
Is set in the transmission buffer, and then, in order to display the calling ID of another external line that is continuing the incoming call, the number of another external line, incoming call data, and calling ID are set in the transmitting buffer.

On the other hand, for the slave unit that has responded, the outside line capture number indicating the outside line capture state and the outside line capture state is set in the transmission buffer for the responding slave unit. Then, step S
In step S9, in response to "Y" indicating that the transmission process is performed, the transmission process of transmitting the data in the transmission buffer to all the slave units is performed in step S9. As a result, when each of the slave units other than the answering slave unit receives the outside line number, the no-call data, and the outside line communication state data, if the calling ID corresponding to the outside line number is displayed, it is deleted. In addition, the corresponding outside line lamp is displayed during a call, and if there is no ongoing incoming call, the ringing of the incoming call is stopped.
When receiving an outside line number, no incoming call data, outside line communication state data, and calling ID, the calling ID is deleted and the corresponding outside line lamp is displayed during a call, and if there is no ongoing incoming call, the incoming call is sounded. To stop. In this case, when subsequently receiving the number of another outside line that is continuing the incoming call, the incoming call data, and the calling ID, the calling ID is displayed.

On the other hand, in the responding handset which has received the captured outside line number and the outside line capturing state data, the display of the corresponding outside line lamp is changed to the capturing state, and the ringing tone is stopped and the call originating signal being displayed is displayed.
Erase D. After the transmission processing to each slave unit, the CPU 15 of the main device 1 returns to step S1, sets the next outside line number, and performs the same processing for the next outside line L2 from step S2.

If an incoming call has not arrived at the outside line L1 at the time of the outside line capture request and the determination in step S21 is "N", an outside line capture process of capturing the outside line L1 is performed in step S25, and then step S8 is performed. "Y" with transmission processing of
In step S9, after transmitting the lamp data indicating the capturing state of the corresponding outside line in the transmission process of step S9, the process returns to step S1, sets the next outside line number, and performs the same for the next outside line L2 from step S2. Perform processing.

Next, when the outside line L1 is selected, there is a request to change the display priority based on a predetermined operation of the slave unit for the outside line L1, and if the determination in step S26 is "Y", this change is made. FIG. 4 for the relevant slave unit upon request
The change processing of the management table of (b) is performed in step S27. That is, when, for example, the calling ID of the first-arrived outside line L3 is displayed on the slave unit, the management table is changed so that the calling ID of the outside line L1 is displayed in response to the above change request. Then, the calling line ID of the external line L3 of the slave unit is displayed as the external line L.
A transmission buffer corresponding to the child device is selected so that the transmission ID is switched to 1, and the change data to that effect is set in the transmission buffer in step S28. Then, in response to "Y" indicating that the transmission process is performed in step S8, the transmission process of transmitting the change data to the child device is performed in step S8.
Execute at 9. As a result, the external line L3
Is switched to the display of the source ID of the later-arriving outside line L1. Then, after that, the CPU 15 returns to step S1, sets the next outside line number, and performs the same processing for the next outside line L2 from step S2.

If the selected outside line L1 does not correspond to any of the above and the determination in step S26 is "N",
In step S29, other processing such as dial transmission processing is executed. Then, after “Y” of “there is transmission processing” in step S8 and the transmission processing in step S9,
Returning to step S1, the next outside line number is set, and the same processing is performed for the next outside line L2 from step S2.

As described above, when a calling ID is received from each outside line when a plurality of outside lines are received, the calling ID based on the earliest incoming call is displayed on the handset, and in response to a predetermined operation on the handset side. The IDs of other outside lines can also be displayed. As a result, the handset can display calling IDs from all incoming external lines without using a large-sized display. In addition, even if there are a plurality of incoming calls at the same time, a response can be made after confirming each calling ID by a predetermined operation, so that a desired incoming call can be answered accurately. Note that the change operation of the calling ID displayed on the slave unit TEL includes a method of operating an outside line key corresponding to the incoming outside line, or a method of designating the number of the outside line using the dial key.

Also, in the present embodiment, the L
The CD is configured to display one source ID,
It is also possible to display a plurality of caller IDs. In such a case, the caller IDs can be rearranged in the order in which incoming calls can be answered using each table in FIG.
D can be displayed with a mark. Further, in the present embodiment, an example is described in which the number of outgoing ID receiving circuits and the number of outside line monitoring circuits provided are smaller than the number of accommodated outside lines. However, the present invention provides the same number of outgoing ID receiving circuits and outside line state as the number of housed outside lines. The present invention can be similarly applied to an apparatus having a monitoring circuit. In the above example, the memory 16 of the main device 1 is used.
The main unit 1 transmits data corresponding to the change of the state of the outside line to the slave unit when the state of the outside line changes, and each slave unit performs a display operation based on the data sent from the main unit. The same effect can be obtained by providing such a table in a memory (not shown) of the slave unit TEL.

That is, when an outside line is received, the main unit 1 displays the calling ID received from the outside line together with the number of the outside line and the slave unit TEL.
To the side. Upon receiving the calling ID and the outside line number, the slave unit TEL stores the calling ID corresponding to the outside line number in the table of FIG. 4A and displays the outside line number (display station line number) in the table of FIG. ) Is stored. Then, FIG.
The external number is stored in the incoming call priority table in (c) according to the order of incoming calls, and the received calling ID is displayed on the L of the display unit 23.
Display on CD. At this time, the numbers of the other external lines are already stored in the table of FIG. 4B, and unless the stored external line has a lower display priority than the external line received this time for the child device, the received external line is received this time. Figure 4
It is not stored in the table of (b) and is not displayed on the LCD.

Thereafter, when the slave unit responds to the incoming call on the outside line displayed on the LCD, or when another slave unit responds to the incoming call from the outside line, the main apparatus 1 sends the external line number erasure instruction data to the outside line number. And the slave unit deletes the calling ID corresponding to the outside line number stored in the table of FIG. 4A. Next, after the calling ID in the incoming call priority table shown in FIG. 4C is deleted and the next calling ID is updated with the highest priority, the calling ID to be displayed according to the updated incoming call priority table is shown in FIG. The information is read out from the table in a) and displayed on the LCD of the display unit 23. Then, the outside line number is stored in the table of FIG. In addition,
When a plurality of calling IDs are stored in the table of FIG. 4A, for example, when the number of the incoming outside line is designated by a dial key operation, the control unit 21 of the slave unit TEL causes the calling ID being displayed on the LCD to be displayed. Is switched to another calling ID read from the table specified by the above operation.

[0040]

As described above, according to the present invention, in a telephone device accommodating a plurality of external lines having a calling ID notification function and accommodating a telephone having a display unit, at least two or more external lines are provided. A receiving unit for receiving a calling ID notified from each external line when an incoming call arrives at the same time; and a display control means for displaying the received calling ID on a display unit of the telephone. Is changed, the caller ID can be changed and displayed on the telephone side, so that the caller IDs from a plurality of outside lines can be displayed without using a large-sized display. Further, since the display of the calling ID on the display unit is changed based on a key operation for designating the incoming call outside line, a plurality of received calling IDs are displayed.
One of the source IDs can be accurately selected from the list and displayed on the display unit. In addition, when an outside line capturing operation is detected, the incoming outside line corresponding to the calling ID displayed on the display unit is captured and the incoming call is answered, so that the telephone can accurately answer the incoming call to a desired party. .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a telephone device according to the present invention.

FIG. 2 is a block diagram showing another example of the configuration of the device.

FIG. 3 is a flowchart showing an operation of a main part of the apparatus.

FIG. 4 is a table showing a state of incoming calls of each external line accommodated in the above-mentioned device and an incoming call display priority of a slave unit which displays an incoming state of each outside line.

[Explanation of symbols]

1 ... main unit, 111 to 11n ... external line interface, 1
2, 121 to 12n: external line state monitoring circuit, 13: circuit switching circuit, 14, 141 to 14x: source ID receiving circuit, 15
... CPU, 16 ... Memory, 171 to 17m ... Telephone interface, 18, 19 ... Switch circuit, 21 ... Control unit, 22 ... Transmission circuit, 23 ... Display unit (LCD, external line lamp), 24 ... Talk circuit, 25 ... Outline Key, 26 ... Dial key, TEL1-TELm ... Key-phone, L1-
Ln ... outside line.

Claims (3)

[Claims] 1. A telephone device that accommodates a plurality of external lines having a function of notifying a caller ID indicating a telephone number of a caller and accommodates a telephone having a display unit, wherein at least two or more external lines arrive simultaneously. A receiving unit that receives a calling ID notified from each outside line when the call is made, a display control unit that displays the received calling ID on a display unit of the telephone, and a calling ID of the display unit based on a predetermined operation of the telephone. And a display changing means for changing the display of the telephone. 2. The telephone device according to claim 1, wherein the predetermined operation is a key operation for designating an incoming call outside line. 3. The telephone device according to claim 1, wherein when the operation of capturing the outside line is detected, the outside line that has notified the calling ID being displayed on the display unit is captured and the incoming call is answered.