JPH0541756A - Cordless public telephone set - Google Patents

Abstract

PURPOSE:To provide free call service for constant time by releasing a line when it is detected that slave call service satisfies a prescribed condition. CONSTITUTION:A master set 1 forms a loop with a central office line, and is connected to the central office line via a loop control and charge signal detecting part 3 which detects a charge signal set from the central office line. When a slave set 2 performs an outgoing call, information is transmitted to the master set 1, and is received by a radio unit 11, and a control part 7 performs outgoing processing. The line is connected to the central office line via the loop control and charge signal detecting part 3, then, speech can be held. The charge signal sent via the central office line is detected by the detecting part 3, and is recognized by the control part 7, and is processed at a charge processing part 8, and is displayed on a display part 9. Such charge information is sent to the slave set 2, and is recognized by a control part 14, and is displayed on a display part 15, and a line releasing signal is selected when the master set 1 detects the fact that a charge for using exceeds a prescribed value. Thereby, since the line can be released and service can be stopped, the free call service for constant time can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless public telephone in which a master unit and a slave unit are connected by a wireless line.

[0002]

2. Description of the Related Art Conventionally, pink telephones have been provided for making pay calls, but in recent years, cordless public telephones having a handset wirelessly connected to the pink telephone body have been provided. By installing such a device in a shop such as a restaurant, it becomes possible to provide a pay call service to visitors.

When such a device is used, the main body is installed in a corner of the store, the owner uses a specific slave unit, and the other slave units are placed on the table, so that the visitor can talk without standing up. can do. Then, the call charge of the handset is displayed on the display of the main body or printed on the printer.

[0004]

However, such a conventional device is premised on making a toll call from the beginning, and the owner's favor or business policy will provide a free call for a certain period of time to prevent the customer from leaving. Even so, there was a problem that it was not a very smart method because there was no choice but to rebate the free call charge for the fixed time from the total of the store usage fee and the telephone usage fee.

The present invention has been made in view of such a situation, and an object thereof is to provide a device which can make a free call for a fixed time.

[0006]

In order to solve such a problem, the present invention provides a control means for opening a line when it is detected that a handset call service has reached a certain condition. It was prepared for the base unit. A second aspect of the present invention is provided with a means for making a pay call when a continuous call is made even after the free call ends.

[0007]

[Function] The customer can use the telephone without worrying about the usage charge of the telephone until a certain time, and the smart service can be provided to the customer. However, this service is not unlimited, and when a predetermined condition is met, the line is opened and the service is terminated.

[0008]

1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, reference numeral 1 is a master unit, which forms a loop with a station line and is connected to the station line via a loop control / charge signal detection unit 3 which detects a billing signal sent from the station line. .. When an incoming call arrives, the loop control / billing signal detection unit 3 detects the incoming call, and the detection result is the control unit 7
And is transmitted to the child device 2 through a wireless line via the wireless unit 11.

In the handset 2, the signal received by the wireless unit 12 is detected by the control unit 14, and the buzzer 17 notifies the incoming call. When the handset 2 goes off-hook, the handset 13 can talk. In this case, the master unit 1 transmits a voice signal through the loop control / billing signal detection unit 3, the call circuit 4, the branch circuit 5, and the wireless unit 11. In addition, the signal via the branch circuit 5 is also supplied to the handset 6 so that the call from the base unit 1 can be performed if necessary.

On the other hand, when the slave unit 2 makes a call, the information is transmitted to the base unit 1, received by the wireless unit 11, and the control unit 7 performs a call origination process. Then, the loop control / billing signal detection unit 3 is connected to the office line to enable communication, and the loop control / billing signal detection unit 3 detects the billing signal transmitted via the office line, and the control unit It is recognized by 7, processed by the fee processing unit 8 and displayed on the display unit 9. This charge information is also sent to the child device 2, recognized by the control unit 14, and displayed on the display unit 15. When the base unit 1 detects that the usage fee has exceeded the predetermined value, the base unit sends a line open signal to open the line.

FIG. 2 is a flow chart for explaining the above operation. The slave unit 2 sends an outside line capture signal (step 131) by pressing the outside line key (step 130), and this signal is sent to the master unit 1. Is received (step 100), line acquisition processing is performed (step 10).
1). When the handset 2 presses the dial key (step 132), a dial signal is transmitted (step 13).
3) This is received by the master unit (step 102), and a dial signal is sent to the station side (step 103).

As a result, a call can be made when the connection with the central office line is completed. The base unit 1 remains in a call state until it receives an outside line end signal (step 104), and adds a call charge each time a billing signal arrives from the station side (step 105) during a call (step 106). ). Then, the call charge is checked, and if it exceeds a predetermined value (step 107), an open signal is transmitted (step 108). Then, the cordless handset 2 receiving this signal (step 136)
A call ending process is performed (step 137). The base unit 1 also performs the call disconnection process (step 109) and the call termination process (step 110).

On the other hand, when the call of the user of the handset is completed before the fixed charge, the outside line key of the handset 2 is pressed (step 134), so that the outside line end signal is transmitted to the base unit 1 (step). 135). Then, this is received by the base unit 1 (step 104), and the base unit performs the call disconnecting process (step 109) and the ending process (step 110). The termination process (step 137) is performed in the child device 2.

If the alarm sound is output to the handset 2 before the end of the free call, the handset user can know that the free call time is over. After that, if the user wants to continue the call even if the call is switched to a pay call, for example, the special key of the handset 2 is pressed, the signal is transmitted to the base unit 1, and the base unit 1 detects the fact and charges the bill. You can also Alternatively, a memory card in which a certain amount of credit has been written can be stored in the handset 2 before the free call ends, and a pay call for this credit can be made possible.

FIG. 3 shows a slave unit provided with a memory card insertion slot 18 so that a call can be made only for the credit of the memory card. As shown in FIG. 4, this device operates when the cordless handset presses the outside line key (step 22).
0), it is detected that a memory card is inserted (step 221), and when it is detected that there is a remaining time (step 222), an outside line capture signal is sent to the base unit 1 (step 223).

The base unit 1 receiving this signal (step 2
00), the line is captured (step 201). And
The dial key is pressed on the child device (step 22).
4) When the dial signal is transmitted (step 224)
a), this is detected by the base unit 1 (step 202), and a dial signal is sent to the office line side (step 205).

When the connection is completed and a call is made, a billing signal is transmitted from the station side (step 204), the talk time is started to be subtracted (step 206), and the signal is transmitted to the handset unit. Also, the subtraction of the call time is started (step 225). Then, the remaining time is subtracted (step 226), and when the remaining time becomes 0 (step 227), an outside line end signal is transmitted (step 22).
9). The outside line end signal is received by the base unit (step 207), the call disconnection process is performed (step 208),
End processing is performed (step 209). Then, in the same way, the termination process is performed in the slave unit (step 230).

When the telephone call of the handset is completed before the remaining time becomes 0 and the outside line key is pressed (step 228), the call ending process is performed for both the handset and the base unit as described above.

The above description uses a memory card to make a call from the child device, and the call from the child device can be time limited.
It will be possible to use it to control outgoing calls using memory cards and to provide free calls to users. Further, with respect to this memory card, the call time may be set in advance, or a card slot may be provided on the base unit side so that the data of the memory card can be freely set.

In the above embodiment, the talk time subtraction is started by receiving a signal from the master unit, but it is also possible to judge the dial end and to perform it by the slave unit.

[0021]

As described above, since the present invention allows free calls for a fixed time, it has an effect that a smart service can be provided to users.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation between a child device and a parent device.

FIG. 3 is a block diagram showing another embodiment of the present invention.

4 is a flowchart showing the mutual operation of the child device and the parent device of the apparatus of FIG.

[Explanation of symbols]

 1 parent unit 2 slave unit 3 loop control / billing signal detection unit 4 call circuit 5 branch circuit 6 handset 7 control unit 8 fee processing unit 9 display unit 10 alarm unit 11 wireless unit 12 wireless unit 13 handset 14 control unit 15 display Part 16 Key matrix 17 Buzzer 18 Card slot

Claims (2)

[Claims] 1. A cordless public telephone having a plurality of cordless handsets wirelessly connected to the cordless handset, wherein the cordless handset has control means for releasing the line when detecting that the cordless handset call service has reached a certain condition. A cordless public telephone that is equipped with. 2. The handset unit according to claim 1, wherein the handset unit is provided with a call continuation means for continuing the call when the handset call service intends to continue the call even after a certain condition is reached. Cordless public telephone