JPH10304022A - Telephone line connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent ringing by an information reception terminal start signal (CAR) in the case that a telephone set having no provision for the caller telephone number display service to a line subscribing to the caller telephone number display service and to prevent a caller telephone number of the like from not being displayed on a major concerned telephone set in the case that the concerned telephone set whose primary reply signal and reception end signal have respectively a different transmission timing is branched to the line. SOLUTION: A 1st connection section 2 is connected to a telephone station 9. A 2nd connection section 4 is connected to telephone sets 12, 13. A switch 5 switches the connection between the 1st connection section 2 and the 2nd connection section 4. detection means 6, 7 detect a transmission period of caller telephone number display service information. A control circuit 8 opens the switch 5 for the transmission period of the caller telephone number display service information based on outputs from the detection means 6, 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention A telephone line connector connected between a telephone station for transmitting service information to a first terminal of a called party and a second terminal of the called party before transmitting a call signal for a call. About.

[0002]

2. Description of the Related Art At present, at the time of calling, a telephone station (subscriber exchange) informs a telephone number of a calling party's telephone (information receiving terminal) to a telephone of a called party. Notification service) is being piloted in Yokohama, Nagoya and Fukuoka. This is a service available to the called party's telephone set connected to the line subscribed to this service and provided with a telephone number receiving function.
Before sending R), a telephone number sending process is added.

[0003] This telephone number sending process will be described with reference to the time chart of FIG. By calling the caller's phone,
The central office inverts the polarities of the two telephone lines L1 and L2. Then, the central office receives an information receiving terminal activation signal (CAR).
(See FIG. 3) to the called party's telephone. This CAR
Is not a signal for calling the called party, but if it is left as it is, the telephone will ring (ring). Thus, the telephone stops ringing and goes off-hook. When the central office detects this off-hook (primary response signal), it sends an information signal (modem signal) of the telephone number of the calling party's telephone to the called party's telephone.

When the called party's telephone receives the modem signal, it goes on-hook within a predetermined time. When the telephone station detects this off-hook (reception completion signal), it determines that the telephone number transmission processing has been completed and transmits a normal call signal (IR) (see FIG. 4).

[0005] In this way, the called party can be notified of the telephone number of the calling party before ringing.

[0006] In the call waiting service,
Displaying the telephone number of the caller is being considered. In this case, a modem signal is sent to the called party's telephone during a call, but the telephone corresponding to this service mutes the modem so that the called party cannot hear the modem signal.

[0007]

However, if a caller who has a non-compliant telephone without a telephone number receiving function purchases a compatible telephone with a telephone number receiving function,
A compatible telephone and a non-compliant telephone may be connected (branched) to the same line. In such a case, the incoming call will ring when the non-compatible telephone receives the CAR,
There is a problem that even if the handset is picked up, it is impossible to receive a modem signal and make a call.

Further, the method of detecting the CAR of the corresponding telephone,
Off-hook timing after AR reception is not uniform. For this reason, when a plurality of compatible telephones are connected to the same line, only the telephone which performed the off-hook first can receive the modem signal (caller number), but the user can determine which telephone is calling. There is a problem that it is not known whether the user number can be received.

[0009] In the case of the call waiting service, there is a problem that a non-compatible telephone can hear a modem signal to a called party.

[0010]

SUMMARY OF THE INVENTION A telephone line connector according to the present invention has been made in view of the above circumstances, and a telephone station for transmitting service information to a first terminal of a called party before transmitting a call signal of a telephone call. A telephone line connector connected to a second terminal of the called party, wherein the first connection unit connects to a central office;
A second connection unit that connects to the second terminal, a switch that disconnects the connection between the first connection unit and the second connection unit, and a detection unit that detects a transmission period of the service information, A control circuit is provided for releasing the connection of the switch during the transmission period of the service information based on the output of the detection means.

A telephone line connector connected between a telephone station for transmitting service information to a terminal of a called party before transmitting a call signal of a call and a terminal of the called party. A first connection unit that connects to the first and second terminals; a second connection unit that connects to the first and second terminals; and a third connection unit that connects to the first and second terminals.
A switch for interrupting the connection between the connection units, a detecting means for detecting the transmission period of the service information, and a control circuit for releasing the connection of the switch during the transmission period of the service information based on the output of the detecting means. .

Further, after inverting the polarity of the telephone line to the first terminal of the called party in response to the call of the terminal of the calling party, transmitting an information receiving terminal activation signal to the first terminal. When receiving a primary response signal notifying that the information receiving terminal activation signal has been received from the first terminal, transmitting the number information of the terminal of the caller to the first terminal and receiving the information A telephone line connection connected between a telephone station transmitting a calling signal to the first terminal upon receipt of a reception completion signal notifying the fact from the first terminal and the second terminal of the called party A first connection unit connected to a telephone station, a second connection unit connected to the second terminal, and a connection between the first connection unit and the second connection unit. Switch to
Start detection means for detecting the polarity inversion or the information reception terminal start signal, end detection means for detecting the reception completion signal or the call signal, and when the detection signal of the start detection means is received, opens the switch and A control circuit is provided for closing the switch when a detection signal of the end detecting means is received.

Further, in response to the call of the caller terminal, an information receiving terminal activation sound signal is transmitted to the first terminal of the called party, and the number information of the terminal of the caller is transmitted to the first terminal. And a telephone line connector connected between the telephone station transmitting the ringing tone signal to the first terminal and the second terminal of the called party, wherein the telephone line connector is connected to the telephone station. 1 connection part, a second connection part connected to the second terminal, a switch for interrupting the connection between the first connection part and the second connection part, and the information reception terminal start sound signal And a control circuit that opens the switch based on an output of the start detection unit and closes the switch after a predetermined time.

In response to the call of the terminal of the caller, an information receiving terminal activation sound signal is transmitted to the first terminal of the called party, and the number information of the terminal of the caller is transmitted to the first terminal. And a telephone line connector connected between the telephone station transmitting the ringing tone signal to the first terminal and the second terminal of the called party, wherein the telephone line connector is connected to the telephone station. 1 connection part, a second connection part connected to the second terminal, a switch for interrupting the connection between the first connection part and the second connection part, and the information reception terminal start sound signal Detecting the end of the reception of the number information or outputting the detection of the incoming call display sound signal, and opening the switch based on the output of the start detecting means, and outputting the output of the end detecting means. A control circuit for closing the switch based on the control signal.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a main part of the first embodiment of the present invention.

(1) is a telephone line connector. The telephone line connector (1) has first to third three terminals (2) to
(4), a switch (5), a polarity inversion means (6), a reception completion signal detection means (7), and a control circuit (8).

The first terminal (2) is connected to a telephone line (10) of a telephone office (9). This telephone line (10) has subscribed to a calling telephone number display service, and the telephone office (9) transmits the telephone number of the called party.

The second terminal (3) is connected to the first corresponding telephone (1).
1) is connected. The third terminal (4) is connected to a second compatible telephone (12) or a non-compliant telephone (13). Here, the first and second corresponding telephones (11) (1)
2) has a function of receiving a called number corresponding to the calling telephone number display service. On the other hand, non-compliant telephones (13)
Does not have the function of receiving the called party number.

Here, the operation of the calling telephone number display service will be described. FIG. 2 is a time chart showing this operation.

The telephone station (9) inverts the polarities of the two telephone lines (10) L1 and L2 when the caller's telephone is called. Then, the central office sends an information receiving terminal activation signal (CAR) indicating the start of the calling telephone number display service to the telephone of the called party. This CAR is, as shown in FIG.
This is a pulse signal composed of High for 0.5 seconds and Low for 0.5 seconds. On the other hand, a normal ringing signal (IR) for ringing the called party is a one-second Hig as shown in FIG.
This is a pulse signal composed of h and Low for 2 seconds.

Therefore, although the CAR is different from the signal waveform of the IR, if the telephone receiving the CAR remains as it is, a ringing tone is generated (ringing). Therefore, the corresponding telephones (11) and (12) stop ringing and go off-hook.

When the central office detects the off-hook (primary response signal) due to the CAR, it transmits an information signal (modem signal) of the telephone number of the calling party's telephone to the called party's telephone. If the caller performs a predetermined operation of rejecting the transmission of the telephone number (for example, inputting 184 (meaning "no")), the modem signal becomes a signal indicating that the telephone number is not transmitted. When the called party's telephone receives the modem signal, it goes on-hook within a predetermined time (7 seconds). When the telephone station detects this on-hook (reception completion signal), it determines that the telephone number transmission processing has been completed and transmits an IR. When the telephone receives the IR, it will ring and call the called party. Thus, the called party can be notified of the calling party's telephone number before ringing.

The first terminal (2) and the second terminal (3) are directly connected. That is, the telephone office (9) and the first corresponding telephone (1
1) is directly connected. The first terminal (2) and the third terminal (4) are connected via a switch (5), and the opening and closing of the switch (5) is controlled by a control circuit (8). That is, opening and closing of the connection between the telephone office (9) and the second compatible telephone (12) or the non-compliant telephone (13) is controlled by the control circuit (8).

The polarity inversion detecting means (6) is connected to the first terminal (2), detects whether the polarity of the telephone line (10) has been inverted, and outputs this signal to the control circuit (8). .

The reception completion signal detecting means (7) is provided with a first
To detect the presence or absence of a reception completion signal from the first corresponding telephone (11), and output this signal to the control circuit (8). The detection method of the reception completion signal detecting means (7) is, for example, using a light emitting diode and a phototransistor, and applying a current equal to or more than a predetermined value between the first terminal (2) and the second terminal (3). On-hook is detected by checking whether or not the flow has flowed to the terminal.

The control circuit (8) comprises a polarity inversion detecting means (6)
And the opening and closing of the switch (5) based on the output of the reception completion signal detecting means (7). FIG. 5 is a flowchart showing the operation of this control.

The control circuit (8) closes the switch (5) during standby and connects the second compatible telephone (12) or the non-compliant telephone (13) to the telephone line (10) (S1). Therefore, during standby, the telephone line connector (1)
It is possible to make a call from all telephones connected to.

Then, when the control circuit (8) receives the inversion of the polarity from the polarity inversion detection means (6) (S2), the control circuit (8) opens the switch (5), and the second corresponding telephone ( 12) Or disconnect the non-compliant telephone (13) from the telephone line (10) (S3).

Then, as described in the operation of the calling telephone number display service described above, a CAR call of the telephone station (9), a primary response signal of the first corresponding telephone (11), a modem signal transmission of the telephone station (9), The reception completion signal of the corresponding telephone (11) is transmitted.

The control circuit (8) receives the detection of the reception completion signal from the reception completion signal detection means (7) (S
4) Connect the second compatible telephone (12) or the non-compliant telephone (13) to the telephone line (10) (S5).

Then, all telephones connected to the telephone line connector (1) can ring the IR from the telephone office (8) and can respond to the call.

By preventing the reception of the CAR signal of the telephone connected to the second terminal (4), the second
Can be prevented from occurring when the telephone connected to the terminal (4) has a response time of the outgoing telephone number display service different from that of the first corresponding telephone (11). If the telephone connected to the second terminal (4) is a non-compatible telephone (13), the telephone rings on CAR reception or goes on-hook before the first corresponding telephone (11) to perform the first telephone. It is possible to prevent the corresponding telephone (11) from being unable to display the caller number.

Note that the calling telephone number display service started (CA
R) Since the switch is opened by detecting the polarity inversion immediately before, the ringing of the non-compliant telephone (13) by the CAR can be surely stopped. Further, since the last signal of the calling telephone number display service is detected and the switch is closed, it is possible to surely receive the next operation, IR.

In the above embodiment, as a method of detecting the period of the calling telephone number display service in which the switch (5) needs to be opened, the opening is started by detecting the polarity reversal, and the end of the opening is received. This was performed by detecting the completion signal. However, the opening may be started by detecting the CAR, and the opening may be ended by detecting the IR.
FIGS. 6 and 7 are a block diagram and a flowchart showing a second embodiment in which the release is completed by detecting the reception completion signal and the release is started by detecting the CAR.

The first and second embodiments are examples of the outgoing telephone number display service in a standby incoming call. Next, the third embodiment which is an example of the outgoing telephone number display service in the call waiting service will be described. explain.

FIG. 8 is a time chart showing a telephone number sending process for a telephone set supported by the call waiting service. When there is a call from the interrupter during a call, the central office sends a ring tone signal to the telephone of the called party. This incoming call display sound signal is a signal for generating a sound that informs the user that there is incoming call information that can be displayed. In this case, not only the telephone number of the interrupter is displayed,
It also alerts you to call waiting. The ringing tone signal is intermittently transmitted until the called party operates to answer the call or the interrupting caller gives up and goes off-hook.

After a predetermined time from the transmission of the first ringing tone signal, the central office sends an information receiving terminal activation tone signal (CAT) to the telephone of the called party. This CAT is a DTMF signal notifying that the telephone number information of the interrupter is transmitted. Then, after a predetermined time from the transmission of the CAT, the telephone station transmits a modem signal, which is the telephone number information of the interrupter, to the telephone of the called party for a predetermined time. Upon receiving the CAT, the called party's telephone mutes the receiver (not shown) so that the tone of the modem signal cannot be heard by the called party. Also,
The central office temporarily interrupts the telephone line of the other party talking to the called party during the CAT and modem signal transmission period so that these sounds cannot be heard by the talking party.

After a predetermined time from the transmission of the modem signal, the central office again transmits the ring tone signal. The transmission of the modem signal is performed only once at the time of transmitting the first incoming call display sound signal.

FIG. 9 is a block diagram showing a configuration of a main part of the third embodiment. Components corresponding to those in FIG. 1 are denoted by the same reference numerals as in FIG. 1, and description thereof will be omitted. The line (10) can perform call waiting.

The second terminal (3) is connected to a compatible telephone (31), and the third terminal (4) is connected to a non-compatible telephone (32). Here, the corresponding telephone (31) mutes by detecting the CAT so that the called party cannot hear the modem signal. However, the non-compliant telephone (32) cannot detect the CAT and cannot mute.

(33) is a CAT detecting means.
And outputs it to the control circuit (8). (34) is a line holding circuit which forms a linear loop of the line and holds the line. (35) is a timer for counting the time required for the operation of the control circuit (8).

FIG. 10 is a flowchart showing the operation of the control circuit (8) of the third embodiment. As an initial state, the control circuit (8) closes the switch (5) until a CAT is detected, and connects the non-compatible telephone (32) to the telephone line (10) (S21). Therefore, both the compatible telephone (31) and the non-compliant telephone (32) are in a state where they can talk to an outside line.

Here, one of the compatible telephone (31) and the non-compliant telephone (32) is talking on the outside line, and an interrupt call is generated. Then, the CAT is transmitted from the telephone station, and the control circuit (8) detects this by the CAT detecting means (33) (S22). Then, after holding the line by the line holding circuit (34) (S23), the control circuit (8) opens the switch (5) to disconnect the non-compatible telephone (32) from the telephone line (10) (S2).
4).

Thus, even if the non-compatible telephone (32) having no CAT detection means (33) cannot be muted, the user will not hear the modem signal. In addition, even if the non-compatible telephone (32) is disconnected by holding the line,
The communication connection with the other party during the call is not interrupted, and the non-compatible telephone (32) can resume the call.

When a predetermined time has passed since the line disconnection of the non-compliant telephone (S25, S26), the non-compliant telephone (32) is again connected to the telephone line (10) (S27), and the line is held by the line holding circuit (34). Release the hold (S2
8). This predetermined time is set so as to be after the reception of the modem signal. Thereby, the non-compliant telephone (32) can resume the call.

As described above, if the non-compliant telephone (32) is connected to the third terminal (4) in order to release the line connection of the third terminal (4) during the reception period of the modem signal, The corresponding telephone (32) does not hear the modem signal.

In the third embodiment, the line disconnection of the non-compatible telephone is started by detecting the CAT, but may be started by detecting the first incoming call display sound signal. Also,
The termination of the line disconnection of the non-compliant telephone is performed by the timer (35), but may be performed by detecting the termination of the modem signal or the detection of the next incoming call display sound signal.

As described above, the outgoing telephone number display service in the call waiting service is similar to the incoming call in the standby mode.
By releasing the line connection of the specific terminal during the transmission period of the service information, it is possible to solve the problem caused by the terminal connected to the specific terminal.

The method of setting the service information transmission period includes:
Invert the polarity of the start of transmission, the first ringing tone signal or CAT
And the like, and the end of transmission is detected and set based on the end of the modem signal, the reception completion signal, the next ringing tone signal, and the like, and the method of setting by starting transmission and counting a predetermined time.

Although the telephone station of the above-described embodiment has transmitted the information of the telephone number of the caller, this service is not limited to the telephone number of the caller, and is not limited to the telephone number of the caller. The present invention can be applied to all the service information transmitted to.

Although the first terminal of the called party in the above-described embodiment is a telephone, it may be a display device that does not have a handset or dialing function and only displays the telephone number of the calling party. Good.

[0052]

As described above, when a telephone which does not support the outgoing telephone number display service is connected to a line subscribed to the outgoing telephone number display service, it is possible to prevent a problem such as ringing by CAR. Can be.

When a corresponding telephone set with a different transmission timing of the primary response signal or the reception completion signal is branched,
It is possible to prevent the display of the caller number or the like from being displayed on the corresponding telephone on the main side.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a main part of a first embodiment of the present invention.

FIG. 2 is a time chart showing an operation of a calling telephone number display service.

FIG. 3 is a diagram showing a signal waveform of a CAR in a calling telephone number display service.

FIG. 4 is a diagram showing an IR signal waveform in a calling telephone number display service.

FIG. 5 is a flowchart illustrating an operation of the control circuit according to the first embodiment.

FIG. 6 is a block diagram showing a configuration of a main part of the second embodiment.

FIG. 7 is a flowchart illustrating the operation of the control circuit according to the third embodiment.

FIG. 8 is a time chart showing an operation of a calling telephone number display service in the call waiting service.

FIG. 9 is a block diagram showing a configuration of a main part of a third embodiment.

FIG. 10 is a flowchart illustrating the operation of the control circuit according to the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Telephone line connector 2 1st terminal 3 2nd terminal 4 3rd terminal 5 Switch 6 Polarity reversal detection means 7 Reception completion signal detection means 8 Control circuit 9 Telephone office 10 Telephone line 11 First corresponding telephone 12 First 2 compatible telephone 13 non-compliant telephone 21 CAR detecting means 22 IR detecting means 31 compatible telephone 32 non-compliant telephone 33 CST detecting means 34 line holding circuit 35 timer

Claims (5)

[Claims] 1. A telephone station for transmitting service information to a first terminal of a called party before transmitting a call signal of a call;
A first connection unit connected to a central office, a second connection unit connected to the second terminal, and the first connection unit. A switch for interrupting the connection between the switch and the second connection unit, detecting means for detecting a transmission period of the service information, and releasing the connection of the switch during the transmission period of the service information based on an output of the detecting means. A telephone line connector comprising a control circuit. 2. A telephone line connector connected between a telephone station for transmitting service information to a terminal of a called party before transmitting a call signal of a telephone call and a terminal of the called party. It has a first connection unit for connection, and a second and third connection unit for connection with first and second terminals, and disconnects the connection between the first connection unit and the third connection unit. A telephone line connection, comprising: a switch; a detection unit for detecting a transmission period of the service information; and a control circuit for releasing a connection of the switch during a transmission period of the service information based on an output of the detection unit. vessel. 3. An information receiving terminal activation signal is transmitted to the first terminal of the called party after inverting the polarity of the telephone line to the first terminal of the called party in response to the call of the terminal of the calling party. When receiving a primary response signal notifying that the information receiving terminal activation signal has been received from the first terminal, transmitting the number information of the terminal of the caller to the first terminal and receiving the information A telephone line connection connected between a telephone station transmitting a calling signal to the first terminal upon receipt of a reception completion signal notifying the fact from the first terminal and the second terminal of the called party A first connection unit connected to a telephone station, a second connection unit connected to the second terminal, and a connection between the first connection unit and the second connection unit. And a start detecting means for detecting the polarity inversion or the information receiving terminal start signal. An end detection unit for detecting a reception completion signal or the calling signal, and a control circuit for opening the switch when receiving the detection signal of the start detection unit and closing the switch when receiving the detection signal of the end detection unit. Telephone line connector. 4. An information receiving terminal activation tone signal is transmitted to a first terminal of a called party in response to a call from a terminal of the calling party, and the number information of the terminal of the calling party is transmitted to the first terminal. And a telephone line connector connected between the telephone station transmitting the ringing tone signal to the first terminal and the second terminal of the called party, wherein the telephone line connector is connected to the telephone station. 1 connection part, a second connection part connected to the second terminal, a switch for interrupting the connection between the first connection part and the second connection part, and the information reception terminal start sound signal And a control circuit for opening the switch based on the output of the start detecting means and closing the switch after a predetermined time. 5. An information receiving terminal activation tone signal is transmitted to a first terminal of a called party in response to a call from a terminal of the calling party, and the number information of the terminal of the calling party is transmitted to the first terminal. And a telephone line connector connected between the telephone station transmitting the ringing tone signal to the first terminal and the second terminal of the called party, wherein the telephone line connector is connected to the telephone station. 1 connection part, a second connection part connected to the second terminal, a switch for interrupting the connection between the first connection part and the second connection part, and the information reception terminal start sound signal Detecting the end of the reception of the number information or outputting the detection of the incoming call display sound signal, and opening the switch based on the output of the start detecting means, and outputting the output of the end detecting means. And a control circuit for closing the switch based on the Connector.