JP3344244B2 - Telephone equipment - Google Patents

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 caller's telephone number.

[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 called party, the exchange first transmits a reversal signal to the called terminal, and also sends a terminal starting signal having a frequency of 16 Hz 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.

[0003]

When a plurality of external lines having such a calling ID notification function are to be accommodated in a telephone device, a calling ID receiving circuit for receiving a calling ID from the exchange side for each external line is provided. However, there is a problem in that it is necessary to increase the size and cost of the apparatus. Therefore, the present invention suppresses the increase in size and cost of the telephone device that accommodates a plurality of external lines having a calling ID notification function by reducing the number of calling ID receiving circuits for receiving calling IDs from the number of accommodated outside lines. The purpose is to do.

[0004]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a terminal provided for each outside line and arriving at the outside line.
A plurality of detection circuits for respectively detecting a start-up signal;
D receiving circuit for receiving D, a plurality of external lines and receiving ID
Switch circuit provided between the
Corresponds to the detection circuit that detected the terminal activation signal among the circuits
A first selection means for selecting an outside line and a switch circuit are controlled.
Receiving the outside line and the calling ID selected by the first selecting means
Connects to a circuit and receives a calling ID from the selected outside line
And control means for causing the communication circuit to receive the signal . Therefore, when receiving calling IDs from a plurality of external lines, it is possible to cope with the number of calling ID receiving circuits smaller than the number of the external lines, and it is possible to prevent an increase in size and cost of the apparatus. In addition, a monitoring circuit that detects reversal and reversion of external lines,
Switch means provided between the outside line and the monitoring circuit;
Controls switch means and selects monitoring circuit for multiple external lines sequentially
To allow the monitoring circuit to detect reversal,
Second selecting means for selecting an outer line from which a pole has been detected;
Detecting circuit provided on the external line selected by the selecting means
Determining means for determining whether a terminal activation signal is detected by
And the first selecting means outputs the terminal activation signal by the determining means.
Select the outside line corresponding to the detection circuit determined to have
To choose . In addition, the pole of the outside line is provided for each outside line.
A plurality of monitoring circuits for detecting
The second one that selects the monitoring circuit that has detected the reversal of the monitoring circuits
And the monitoring time selected by the second selecting means.
Terminal activation by the detection circuit provided on the outside line corresponding to the road
Determining means for determining the presence or absence of signal detection;
The selection means determines that the terminal activation signal has been detected by the determination means.
Selects an external line corresponding to the determined detection circuit.
You. Also, the control means is that the calling ID receiving circuit receives the calling ID.
It has been <br/> the outside line and caller ID receiver circuit selected by the first selecting means when the state is not a connection to shall.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of a telephone device according to the present invention. This telephone device has a plurality of external lines L1 to Ln.
And a plurality of key telephones TEL1-TE
This is a key telephone apparatus that accommodates Lm and performs exchange connection between an outside line and a key telephone or between key telephones.

[0006] The key telephone apparatus includes external lines L1 to L.
1 to 1n for detecting an incoming call, capturing an external line, dialing, etc., are connected to each of the key telephones TEL1 through TEL1 through a line switching circuit 2 including a telephone line switch and a telephone interface. It is configured to be connected to TELm. Then, the external line interface 11 is controlled by the CPU 3.
1n and the line switching circuit 2 are controlled to perform exchange connection processing between the outside line and the key telephone or between the key telephones.

Further, switch circuits 4 and 6 are connected to each of the external lines L1 to Ln, and the output sides of the switch circuits 4 and 6 are connected to an external line state monitoring circuit 5 and a calling number receiving circuit 7, respectively. . The external line state monitoring circuit 5 is a circuit for detecting the reversal and reversion of the external line L. The calling number receiving circuit 7 is constituted by a modem, and receives a calling ID sent from an exchange (not shown) at the time of an incoming call. Things.

That is, this key telephone apparatus accommodates a plurality of external lines L1 to Ln to which a caller ID is notified when an incoming call is received from the exchange. Here, when the caller makes a call to the called party, the exchange first sends a reversal signal to the outside line L and sends a terminal start signal of a frequency of 16 Hz for a short time. Then, the CPU 3 detects the reversal signal via the external line state monitoring circuit 5 by sequentially selecting the switch circuits 4. After detecting the reversal signal, the CPU 3 detects the terminal activation signal via the incoming detection circuit of the external line interface 1 connected to the relevant external line, and controls the external line interface 1 to close the loop of the external line. By doing so, the primary response signal is returned to the exchange.

On the other hand, the exchange sends the calling ID to the external line by a modem signal. Then, the CPU 3 selects the switch circuit 6 to generate a signal I from an external line.
D is received by the calling number receiving circuit 7, and the received calling ID is received.
Is stored in a memory (not shown) and the number is displayed on the key telephone. When the reception of the calling ID is completed, the loop of the corresponding external line is released. in this case,
The exchange determines that the reception of the calling ID is completed, and sends an incoming signal to the external line. As a result, the incoming signal is detected by the CPU 3 via the corresponding external line interface, and the key telephone rings. As described above, even when a plurality of external lines L1 to Ln for which the calling ID is notified are accommodated, the switching / reversing is performed by the single external line state monitoring circuit 5 and the calling number receiving circuit 7.
It is possible to detect depolarization and receive a source ID.

The operation of the main part of the present invention will be described below with reference to the flowcharts of FIGS. First, a description will be given of a reversal detection process for detecting reversal of an external line shown in FIG. Each process in FIG. 4 is performed by a timer interrupt process that is periodically executed, and the process for all external line segments is executed by one interrupt. In the process of FIG.
First, in the first interruption, the state of the external line for which the reversal is to be detected is initialized (step S51). Next, the switch circuit 4
To determine the presence or absence of a change in reversal or reversal of the external line L1 via the external line state monitoring circuit 5 (step S52). If there is a change, the detected state is stored (step S53), and the detected flag is cleared (step S54). Then, the detection counter provided in advance is initialized (step S55), and the detected outside line is updated (step S56).
It is determined whether or not the process has been completed (step S57). In this case, since the processing is not completed up to the outside line Ln, step S
Returning to step 52, the same processing is performed for the outside lines L2 to Ln.

If the state continues after the state change, the "state change" in step S52 becomes "N". In this case, it is determined whether or not the detected flag is set (step S58). If the flag is not set, the value of the detection counter is updated (step S59), and the detection is performed by the detection counter reaching a predetermined value. The end is determined (step S60). Here, if the detection end is "Y", it is determined whether this detection is the detection of reversal or the detection of reversal after reversal (step S61). If the reversal is detected, the reversal detection flag is set (step S62), and the detected outside line is updated (step S62).
56) Then, the process shifts to the “end of all outside lines process” judgment of step S57. Further, when the return polarity is detected, the return polarity detection completion flag is set (step S63), and similarly, the step S63 is performed.
The process moves to the process of 56. In this way, each of the outside lines L1
Inversion or reversion detection processing for Ln is performed, and when these are detected, a corresponding flag is set for each external line.

Next, the ID receiving terminal activation signal detection processing shown in FIG. 4B will be described. At the time of incoming call, after the reversal signal is transmitted from the exchange, the ID which is almost 16 Hz
The receiving terminal activation signal is transmitted from the exchange for a short time.
The CPU 3 detects this activation signal via the incoming line detection circuit of the external line interface 1 for the relevant external line for which the detected flag has been set in the reversal detection processing of FIG.
That is, in the first interrupt process, the state of the external line for which the start signal is to be detected and processed is initialized (step S71). Next, steps S72, S73 and S74 are performed for the outside line L1.
To determine “start signal detection waiting”, “start signal present”, and “start signal?”, Respectively. Here, if both are determined to be "Y", the activation detected flag is set (step S75), and the outside line is updated (step S76). Thereafter, it is determined whether or not such processing has been performed for all the outside lines (step S77). In this case, since only the processing for the outside line L1 has been completed, the process returns to step S72 and the same processing is performed for the next outside line L2. Perform processing. In this manner, the same processing is performed on the subsequent external lines L2 to Ln as long as there is an external line to receive the activation signal.

Next, the calling ID receiving process shown in FIG. 4C will be described. After receiving the start signal, when the DC loop of the corresponding external line is closed, the calling ID is transmitted from the exchange side.
That is, first, an outside line for which the calling ID is to be received and processed is initialized in the first interrupt processing (step S81). Next, the outside line L1
It is determined whether or not it is waiting for a calling ID to be received (step S8).
2) In the case of waiting for reception, the switch circuit 6 is controlled to select the outside line L1, and the reception data is read via the calling number reception circuit 7 (step S83). Next, the reception end is determined (step S84), and when the reception ends, the calling ID reception completed flag is set (step S85). Thereafter, the processing outside line is updated (step S86), and it is determined whether the processing has been completed for all outside lines (step S86).
87) If the processing for all the outside lines is not completed, the process returns to step S82 to select the next outside line L2 and perform the same processing. In this way, the same processing is performed for the subsequent outside lines L2 to Ln if there is an outside line to receive the calling ID.
In this way, when the DC loop is released for the outside line for which the calling ID has been received, an incoming signal arrives and each telephone rings.

Next, based on the flag of the result detected in each of the processes shown in FIG. 4, the reception ID receiving process shown in FIGS. 2 and 3 is performed. That is, in the flowchart of FIG.
First, a processing outside line is initialized (step S1). next,
First, the outside line L1 is selected, and it is determined whether or not this outside line is in a state of waiting for the reversal of the pole (step S2). Here, if it is waiting for reversal, it is determined whether or not the reversal flag has been set as a result of the processing of FIG. 4A (step S3). If the flag has been set, a primary response is performed. A 5.5 second timer is started (step S4). Next, the pole detection flag is cleared (step S5), the outside line is updated (step S7), and it is determined whether or not the processing has been completed for all outside lines (step S8). Returns to step S2, and performs processing for the next outside line.

Next, if there is an outside line waiting for the start signal for the selected outside line ("Y" in step S9).
), The presence / absence of the activation signal received flag as a result of the processing of FIG. 4B is determined (step S10). here,
If the flag is set, the flag is cleared (step S11), and it is determined whether or not the modem is empty (the calling number receiving circuit 7 is empty) (step S12). If the calling number receiving circuit 7 is not being used for receiving the calling ID by another outside line, a flag indicating that the modem is in use is set (step S13), and the switch circuit 6 is controlled to correspond to the calling number receiving circuit 7. A path to an outside line is connected (step S14). Next, the primary response timer is stopped (step S15), the loop of the corresponding outside line is closed (step S16), a primary response is made, and a calling ID reception waiting flag is set (step S17). Move to. If the processing for all the outside lines is not completed, the next outside line is selected and the same processing is executed for the outside line waiting for the activation signal. If the calling number receiving circuit 7 is in use, a modem idle waiting flag is set (step S28), and the process proceeds to step S7.

Next, if the selected outside line is in a waiting state of the calling number receiving circuit 7 ("Y" in step S18).
), The primary response timer times out (step S
19), and it is determined again whether the calling number receiving circuit 7 is empty (step S20). If the calling number receiving circuit 7 is vacant at this time, a flag indicating that the modem is in use is set (step S21), and the switch circuit 6 is controlled to change the path between the calling number receiving circuit 7 and the corresponding external line. Connection is made (step S22). Next, the primary response timer is stopped (step S23), the loop of the corresponding outside line is closed (step S24), a primary response is made, and a calling ID reception waiting flag is set (step S23).
25) Then, the process proceeds to step S7.

If the primary response timer times out while the modem is in the idle waiting state, a state in which the calling ID has not been received is set (step S26), and a call signal (that is, an incoming signal) waits (step S26). S27). Next, the process proceeds to step S31 in FIG. 3, and if the outside line is in the waiting state for receiving the calling ID, it is determined whether or not the calling ID reception completed flag is set as a result of the processing in FIG. Step S32). If this becomes "Y", the calling ID reception completed flag is cleared (step S33), and the switch circuit 6 is controlled to disconnect the calling number receiving circuit 7 from the corresponding external line (step S34). Thereafter, the modem busy flag is reset to make the modem empty (step S35), and the loop of the corresponding outside line is released (step S36), and a reception ID signal completion signal is sent to the exchange. Then, the received calling ID is transmitted and displayed on the key telephone (step S37), and the outside line is set to a call signal waiting state (step S38).
Move to step S7.

During such a call signal waiting state (step S
When the call signal is detected by interrupt processing or the like in the case of “Y” in 39) and the determination in step S40 becomes “Y”, the call signal detected flag is cleared (step S4).
1) Then, the incoming call data is transmitted to each key telephone to make a ring tone sound (step S42). Then, a response waiting state is set for the outside line (step S4).
3) Then, the process proceeds to step S7. In such a response waiting state (in the case of "Y" in step S44), response operation data is input from the key telephone set and step S44 is performed.
If the determination at step 45 becomes "Y", the external line interface is controlled to close the DC loop of the external line (step S4).
6) Then, a secondary response is made, and the external line is set in a standby state (step S47). That is, the external line is depolarized from the exchange side by the secondary response in step S46,
In step S47, the return polarity detection is performed.

As described above, according to the present invention, the switch circuits 4 and 6 are connected to a plurality of external lines having the calling ID notifying function, and the external line state monitoring circuit 5 and the calling number receiving circuit are provided at the subsequent stages of the switch circuits 4 and 6, respectively. 7 and the CPU 3 controls the switch circuits 4 and 6 according to the state of each external line in the interrupt processing, thereby selectively connecting each external line to the external line state monitoring circuit 5 or connecting each external line to each external line. A selective connection with the calling number receiving circuit 7 is performed, and a reversal signal or calling ID from a plurality of external lines is transmitted to one external line state monitoring circuit and 1
One of the calling number receiving circuits receives the call.
As a result, the number of external line condition monitoring circuits and calling number receiving circuits can be reduced, and an increase in the size and cost of the device can be suppressed.

Further, after the reversal signal is detected by the external line state monitoring circuit 5, a 5.5 second primary response valid timer indicating the maximum valid time for transmitting the primary response signal is started, and thereafter, the exchange side issues a request. After receiving the output start signal, it is determined whether or not the calling number receiving circuit 7 is used during the operation time of the timer. As a result, if the use of the calling party number receiving circuit 7 by another external line is released within that time, a primary response signal is sent to the exchange side, and the calling party number receiving circuit 7 outputs
Can be received. In this way, while the calling number receiving circuit 7 is being used by another outside line, the primary response signal sent to the exchange side is shifted in time so that the calling side ID is not transmitted from the exchange side. As a result, even when the calling ID is transmitted from a plurality of outside lines at the same time, the calling ID can be reliably received by one calling number receiving circuit.

In this embodiment, for the sake of simplicity, switch circuits 4 and 6 are provided, and an external line state monitoring circuit 5 and a calling number receiving circuit 7 are connected to the subsequent stages of the switch circuits 4 and 6, respectively. However, each of the switch circuits 4 and 6 may be constituted by one switch circuit. In this case, a plurality of external lines are connected to the switch circuit, and the external line state monitoring circuit 5 and the calling number receiving circuit 7 are connected to two outputs of the switch circuit, respectively.

Next, FIG. 5 is a block diagram showing a second embodiment of the present invention, in which external line state monitoring circuits 51 and 52 are provided for each of the external lines L1 and L2, and the line switching circuit 2 has a calling number. The receiving circuit 7 is connected. In this case, when the inversion of any external line is detected and the terminal start signal of this external line is detected, the CPU 3 controls the circuit switching circuit 2 to connect the external line to the calling number receiving circuit 7, The calling party ID received by the calling party number receiving circuit 7 can be input.

FIG. 6 is a block diagram showing a third embodiment of the present invention, in which external line state monitoring circuits 51 to 5n are provided for each of the external lines L1 to Ln, and an external line monitoring circuit 51 The number receiving circuit 7 is configured to be connected. In this case, the CPU 3 controls the switch circuit 6 to connect the external line to the calling number receiving circuit 7 when the inversion of any external line is detected and the terminal activation signal of this external line is detected, and The calling ID received by the number receiving circuit 7 can be input.

[0024]

As described above, according to the present invention, the monitoring circuit for detecting the state of the reversal of the external line, the source ID receiving circuit for receiving the source ID, and the reversal of the external line detected by the monitoring circuit. And a detection circuit for detecting an incoming call of the outside line after the detection is performed. A monitoring circuit for a plurality of outside lines is sequentially monitored to detect a reversal of the outside line, and when the detection circuit detects an incoming call of the outside line, the ID of the call is generated.
Since the receiving circuit and the external line are connected, when receiving IDs from a plurality of external lines, it is possible to cope with the source ID receiving circuits of a number smaller than the number of external lines, thereby increasing the size and cost of the apparatus. Up can be prevented. In addition, outside line and departure I
Since the D receiving circuit is connected by the switch circuit, the external line and the source ID receiving circuit can be connected with a simple circuit configuration. In addition, since connection control between the outside line and the calling ID receiving circuit is performed in accordance with the use state of the calling ID receiving circuit, even if the calling ID is transmitted from a plurality of external lines at the same time, one calling ID receiving circuit can be used. Can be received.

[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 flowchart showing an operation of a main part of the apparatus.

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

FIG. 4 is a flowchart illustrating operations of various detection processes for detecting a calling ID.

FIG. 5 is a block diagram showing a second embodiment of the present invention.

FIG. 6 is a block diagram showing a third embodiment of the present invention.

[Explanation of symbols]

11 to 1n: external interface, 2: circuit switching circuit,
3 CPU, 4, 6 switch circuit, 5, 51 to 5n
External line state monitoring circuit, 7 ... calling number receiving circuit, L1 to Ln ...
Outside line, TEL1 to TELm ... button telephone.

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-60-81955 (JP, A) JP-A-2-266790 (JP, A) JP-A-7-212809 (JP, A) JP-A 63-819 120580 (JP, A) JP-A-6-178344 (JP, A) JP-A-4-320142 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04Q 3/58 107 H04M 3/42

Claims (4)

(57) [Claims] An accommodating system for accommodating a plurality of external lines connected to an exchange for notifying an originating ID indicating a telephone number of a caller to a receiving side based on a call from an originating side, accommodating a telephone, and accommodating the external lines. times to exchange connection between the telephone set
In a telephone device having a line switching circuit, a terminal activation signal provided for each outside line and arriving at the outside line is received.
A plurality of detection circuits for detecting each of them, a calling ID receiving circuit for receiving the calling ID , and a plurality of detecting circuits provided between the plurality of external lines and the calling ID receiving circuit.
Switch circuit, and the terminal activation signal is detected among the plurality of detection circuits.
First selection means for selecting the external line corresponding to the detection circuit, by the controlling the switch circuit first selection means
Connecting the selected outside line to the source ID receiving circuit,
The calling ID from the selected outside line is received by the calling ID receiving circuit.
A telephone device, comprising: a control unit for receiving a call. 2. A monitoring circuit according to claim 1 , wherein said monitoring circuit detects a reversal and reversion of an external line, and a switch provided between said plurality of external lines and said monitoring circuit.
Switch means and the switch means, and the monitoring circuit
Selectively connect to an external line sequentially, and connect the reversal to the monitoring circuit.
Detect and select the outside line where the reversal was detected
A second selecting means to be provided and an outside line selected by the second selecting means.
The judgment circuit determines whether the detection circuit detects the terminal activation signal.
Setting means , wherein the first selecting means outputs a terminal activation signal by the judging means.
Select the outside line corresponding to the detection circuit determined to have
Telephone device which is characterized in that-option. 3. A test Oite to claim 1, of the outside line is provided for each outside line polarity reversal and depolarization, respectively
A plurality of monitoring circuits to be output, and a monitoring circuit that detects the reversal of the plurality of monitoring circuits
A second selection means for selecting, to respond to the monitoring circuit selected by said second selection means
Of the terminal activation signal by the detection circuit provided on the outside line
Determining means for determining the presence or absence of a terminal activation signal;
Select the outside line corresponding to the detection circuit determined to have
Telephone device which is characterized in that-option. 4. The apparatus according to claim 1, wherein said control means receives said calling ID from said calling ID receiving circuit.
Selected by the first selecting means when not in the state
Connecting the external line to the calling ID receiving circuit.
Telephone equipment