JPH10191407A - Key telephone equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid a preferential response to such an incoming call whose originating ID is not received in the middle of call incoming of plural line wires by changing the responding priority order of call incoming according to the receiving situation of originating ID given from a line wire at the time of the call incoming of a line wire. SOLUTION: CPU 15 within a main equipment 1 housing line wires L1 to Ln with an originating ID informing function judges the presence/absence of the pole change of the line wire L1 through a corresponding line wire state monitoring circuit 12, confirms the incoming of a starting signal through a line wire interface 111 and then closes the loop of the line wire L1 to send a first response signal. Then a line exchange circuit 13 is controlled to connect the line wire L1 and a dead originating ID reception circuit to receive-processing originating ID through the connected originating ID receiving circuit. When no calling incomes to another line wire, a call incoming state is set to be '1' corresponding to the pertinent line wire at a call incoming state table and originating ID is stored to store the number of the line wire as a most preferential order at the call incoming preferential table.

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 which accommodates an outside line having a telephone number notification function of a caller.

[0002]

2. Description of the Related Art In a key telephone apparatus accommodating a plurality of external lines and a key telephone, when an external line is detected, external key lamp data for displaying a visual display of the incoming call is transmitted to the key telephone, and the corresponding external line of the key telephone is transmitted. The lamp is displayed in an incoming call state, and a ring tone sounds from a speaker. When such an incoming call sequentially arrives at another outside line, each external line lamp corresponding to each outside line of the key telephone is displayed as an incoming call state. An incoming call response is made.

On the other hand, in recent years, a notification service of a caller telephone number (hereinafter referred to as a calling ID) has been studied in an analog switching network to which such a key telephone device is connected. The calling 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. . When the receiving terminal detects the reversal signal and the starting signal, closes the DC loop of the external line and makes a primary response, the exchange sends 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.

[0004]

By the way, such a source I
When an external line having the D notification function is accommodated in the key telephone apparatus, the external telephone lamp of the key telephone can be set to the incoming call display state when the external line arrives, as described above. Also, it is conceivable to display the calling ID received at the time of receiving an outside line on the display of the key telephone, but if the calling side is set not to send the calling ID intentionally, the call is made. Since the caller ID cannot be received on the receiving side, the caller ID cannot be displayed when such an outside line is received.

Here, for example, when an incoming call arrives in the order of the outside line L1 and the outside line L2, and the calling ID is received only from the outside line L2 of the late arrival, conventionally, a response is made to the arrival of the first outside line L1. . For this reason, there has been a problem that the receiving side preferentially responds to the incoming call made by the calling side without intentionally sending the calling ID. Therefore, an object of the present invention is to avoid a preferential response to an incoming call from an outside line such that the calling ID is not received when receiving a call.

[0006]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a key telephone apparatus for connecting a plurality of external lines and accommodating a telephone, and displays a telephone number of a caller when an external line arrives. A receiving means for receiving the calling ID and a changing means for changing the response priority of the incoming call according to the receiving condition of the receiving means are provided. The changing means sets the response priority for an incoming call on an external line for which the caller ID has been received to a high priority, and sets the response priority for an incoming call for an external line for which no caller ID is received to a low priority.

[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
In addition to accommodating a plurality of external lines L1 to Ln, a plurality of telephones (hereinafter referred to as slave units) TEL1 to TELm are accommodated to perform exchange connection between an external line and a slave unit or between slave units.

The main unit 1 of the key telephone apparatus is provided with external line interfaces 111 to 11n connected to the external lines L1 to Ln for detecting an incoming call, capturing an external line, or making a dial call. Is connected to each of the cordless handsets TEL1 to TELm via the line switching circuit 13 and a telephone interface to be described later. 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. That is, the key telephone apparatus accommodates a plurality of external lines L1 to Ln to which a caller ID is notified from the exchange when receiving an incoming call. When receiving the caller IDs notified from the plurality of accommodated external lines, a switch circuit is provided. By controlling the signal lines 18 and 19, the caller ID can be received by the caller ID receiving circuits whose number is smaller than the number of external lines accommodated.

Here, when the caller calls the called party, 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 key telephone apparatus side, the exchange transmits the calling ID to the external line by a modem signal. Then, the calling ID is transmitted to the calling ID receiving circuit 1 connected to the external line via the switch circuit 19.
4 is received. In this case, the CPU 15 inputs the received calling ID from the calling ID receiving circuit 14, stores it in a memory (not shown), and causes the slave unit TEL to display the number. 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 transmitted from the CPU 15 to the child device TE.
Is sent to L, and the child device 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. The receiving circuit 14 enables detection of reversal / reversion and reception of a source ID.

FIG. 2 shows an outside line L having a calling ID notification function.
FIG. 11 is a block diagram showing another configuration of the key telephone apparatus accommodating 1 to Ln. This key telephone apparatus has a plurality of external lines
In this example, external line state monitoring circuits 121 to 12n are connected to Ln, and outgoing ID receiving circuits 141 to 14x which are smaller in number than the accommodated external lines are connected to the output side of the circuit switching circuit 13. In this case, the CPU 15 of the key telephone apparatus detects the reversal by the external line state monitoring circuit 12 when the external line L arrives, and inputs a start signal through the external line interface 11, and the DC loop of the relevant external line And transmits a primary response signal, and controls the circuit switching circuit 13 to connect a path between the corresponding external line L and the vacant calling ID receiving circuit 14 among the calling ID receiving circuits 141 to 14x. The source ID from the corresponding outside line is received. In this way, the ID
The calling ID from each outside line can be received by the calling ID receiving circuits of a number smaller than the number of accommodated outside lines having the notification function of (1).

Note that a 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.

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 which can respond to an incoming call is usually displayed. Here, a plurality of caller IDs are simultaneously notified from the exchange via a plurality of external lines, and even if an attempt is made to display these responderable caller IDs, the
Because there is a limit to the display capacity of the receiver, not all received caller IDs can 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.
D is 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.

FIG. 4B shows a caller ID 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 external line L3 is out of the incoming state due to a response from the slave unit or abandonment of the call by the caller while the external lines L3 and L1 are incoming. 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 ID 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, in step S3, receiving processing of the calling ID is performed 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. When the calling signal is transmitted after the calling ID is transmitted from the outside line, "Y" indicating that the transmission process is performed in step S8.
In response to this, in the transmission process of step S9, lamp data or the like indicating the incoming call display of the corresponding outside line is transmitted to each slave unit, the corresponding outside line lamp of each slave unit blinks, and the buzzer sounds. 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 the answer is "Y" 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, if a reception error occurs in the caller number receiving process in step S3 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 number is 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, in step S7, an all-wireless-unit change request process for setting the outside line number and the incoming call data in the transmission buffer for each slave 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. Also, in this case, when an incoming signal is detected on the corresponding outside line, the CPU 15 transmits the lamp data of the corresponding outside line indicating the incoming call state to each slave unit, and causes the corresponding outside line lamp of each slave unit to blink. In addition, while such an outgoing call ID is being received, an incoming call arrives at another external line and the incoming call
Is received, the number of the outside line is set to a higher priority in the incoming call priority table of FIG.
The update process is performed so that the outside line number in the table of (b) becomes the outside line number. As a result, the calling party ID of the outside line that has received a call later is displayed on each slave unit TEL, and in response to the incoming call, control is performed so as to automatically respond to the outside line displaying the calling party ID that has received the incoming call later. I do.

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 receiving process of step S3 is executed. Can not receive. In such a case, the determination in step S11 is “N” after “N” in step S4. In this case as well, in step S13, the incoming call state is set to "1" in the table of FIG. 4A corresponding to the corresponding outside line, but the calling ID is not stored. Also,
The external line number is 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. Also, in this case, when an incoming signal is detected on the corresponding outside line, the CPU 15 transmits the lamp data of the corresponding outside line indicating the incoming call state to each slave unit, and causes the corresponding outside line lamp of each slave unit to blink. In this case as well, while an incoming call on an outside line where the caller ID cannot be received continues, the call
Is received, the number of the outside line is set to a higher priority in the incoming call priority table of FIG.
The update process is performed so that the outside line number in the table of (b) becomes the outside line number. Then, at the time of answering the incoming call, control is performed so as to automatically respond to the outside line on which the calling ID is displayed after the incoming call arrives.

If no inversion is detected in the selected external line L1 and the determination in step S2 is "N", then the external line L1 is currently receiving an incoming call. 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 processing is performed in step S8, the transmission processing for 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 performed 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.

Then, in response to "Y" indicating that the transmission process is performed in step S8, a transmission process of transmitting the 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 the slave unit performs an on-hook operation, for example, there is a request to capture the outside line L1, and if 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 is being received on another external line while the external line is being captured and the priority is higher than the priority of the 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 external line, the no-call data, the external-line communication state data, and the calling I
D is set in the transmission buffer, and then the number of the other external line, incoming call data, and calling ID are set in the transmission buffer in order to display the calling ID of another external line that is continuing the incoming call.

On the other hand, for the slave unit that has responded, the outside line capture number indicating the outside line capture number and the outside line capture state are 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 slave unit that has received the captured outside line number and the outside line capturing state data, the display of the corresponding outside line lamp is set to the capturing state, the ring tone is stopped, and the calling I
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 on 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 on the slave unit side 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 external line when a plurality of external lines are received, the calling ID from the incoming external line that arrives first is displayed on the slave unit, and when the incoming call is answered, the calling ID is displayed.
It is configured to respond to the corresponding incoming external line being displayed in D. If a new incoming call arrives on another outside line and the calling ID is received while the incoming call of the outside line that cannot receive the calling ID continues, the calling ID of the outside line is displayed, and there is an incoming call later when answering the incoming call. It is configured to automatically respond to the corresponding outside line on which the calling ID display is displayed. As a result, it is possible to avoid a problem in which the caller side intentionally does not send the calling ID and responds to the incoming call first.

Although the present embodiment has been described with respect to a device comprising a source ID receiving circuit and an external line status monitoring circuit having a smaller number of external lines accommodated therein, the present invention provides the same number of source ID receiving circuits as the number of external lines accommodated. The present invention can also be applied to a device including a circuit and an external line state monitoring circuit. Further, in the above example, each table is provided in the memory 16 of the main device 1, and when the state of the outside line changes in the main device 1, the table is rewritten and the data corresponding thereto is transmitted to each child device. In the slave unit, the display operation and the like are performed in accordance with the data sent from the main unit. However, similar effects 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.

After that, the slave unit responds to the incoming call on the outside line being displayed on the LCD, or the other handset responds to the incoming call on the outside line. 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.

[0041]

As described above, according to the present invention, there is provided a receiving means for receiving a calling ID notified from an outside line when an outside line is received, and the response priority of the incoming call is changed in accordance with the reception status of the receiving means. Thus, it is possible to avoid a prioritized response to an incoming call in which, for example, the calling ID is not received by the receiving means during an incoming call of a plurality of external lines. Also, the departure ID
Sets the priority of the response to the incoming call of the external line to be high, and sets the priority of the response to the incoming call of the external line for which the calling ID is not received to be low, so that the calling party intentionally sends the calling ID. It is possible to avoid such a problem that the incoming call is answered first and the incoming call is answered first.

[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 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 (2)

[Claims] 1. A key telephone device for connecting a plurality of external lines and accommodating a telephone, comprising: receiving means for receiving a caller ID indicating a telephone number of a caller when the external line is received; Changing means for changing the response priority of the incoming call in response to the call. 2. The method according to claim 1, wherein the changing unit sets a higher priority for response to an incoming call on an external line for which the caller ID is received, and lowers a response priority for an incoming call for an external line for which the caller ID is not received. A key telephone device characterized by being set to.