KR19980013919A - Apparatus and method for providing an automatic access number sending function to a telephone connected to a parallel connection in an automatic access number sending telephone - Google Patents

Abstract

end. Technical Field The present invention relates to an apparatus and a method for providing an automatic access number sending function to a telephone set connected to a telephone automatic dialing number transmitting apparatus.

I. The conventional telephone does not have the LCR function. Even if the telephone having the LCR function is provided, the telephone connected in parallel can not use the LCR function because it outputs the DTMF signal to the direct line at the time of dialing .

All. The present invention provides a method of controlling a telephone line, comprising: a first switch for connecting a telephone line to a connected telephone; a second switch for transmitting a dialed signal from the telephone; a power supply for supplying line power during dialing of the telephone; And a use state detecting unit for detecting whether or not the telephone is used. The apparatus and method for providing automatic connection number transmission function to a telephone connected to the LCR telephone.

la. An important use of the invention: LCR phones

Description

Apparatus and method for providing an automatic access number sending function to a telephone connected to a parallel connection in an automatic access number sending telephone

More particularly, the present invention relates to an apparatus and method for providing an automatic connection number transmission function to a parallel-connected telephone in which an automatic connection number transmission function is not implemented.

The term "Least Cost Routing (LCR)" refers to a function of transmitting an automatic access number (hereinafter referred to as "LCR") when there are a plurality of operators providing long-distance or international call services, It is a function that automatically dials a service provider's access number. For example, if the access number is a long-distance telephone, Korea Telecom does not use the access number, and Dacom uses 82. [ In the case of international calls, the telecommunication carrier designates and uses a separate access number such as 1 for Korea Telecom and 2 for Dacom. On the other hand, there is a difference in the fee for use because the fee is separately collected for each provider using a different access number.

Accordingly, when the telephone set implementing the LCR function is used, if the access number of a service provider providing a cheapest line among a plurality of service providers is registered and used in advance, it is possible to use the long-distance telephone or the international telephone service cheaply and conveniently I could.

In operation of the telephone having the LCR function, when the user dials a telephone number, the telephone number stored sequentially is stored, and it is determined whether the stored telephone number is a telephone number requiring LCR. If it is determined that the LCR is required, the pre-registered connection number is transmitted prior to the transmission of the stored telephone number, and the connection number is automatically connected to the exchange or control device of the service provider. On the other hand, the exchange or the control device provides a line which can be serviced at the lowest price via its own circuit network or a circuit network of a third party. When the call using the LCR function is completed, the phone receives and displays LCR information, which is information related to a call time, a fee, and the like transmitted from the service provider exchange or the control device. However, if it is determined that the dialed telephone number is a telephone number that does not require the LCR function, the telephone does not transmit a separate access number. Therefore, the existing telephone line is used (e.g., Korea Telecom of Korea, NTT of Japan, etc.) .

Conventional telephones do not have an LCR function. Even if a telephone having an LCR function is provided, a telephone connected in parallel can not use the LCR function because the DTMF signal is directly transmitted to the line upon dialing.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an apparatus for using an automatic connection number transmission function (LCR) by serially connecting a parallel connected telephone which is not implemented with an automatic connection number transmission function.

It is another object of the present invention to provide a method of using an automatic connection number transmission function (LCR) by connecting in series when dialing a parallel access telephone in which an automatic connection number transmission function is not implemented.

1 is a block diagram of a telephone according to an embodiment of the present invention;

Figures 2a and 2b are control flow diagrams in accordance with an embodiment of the present invention;

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1, the control unit 10 controls the overall operation of the LCR telephone in accordance with a control program stored in the memory 36. The control unit 10 controls the overall operation of the LCR telephone. The first modular jack 12 connects the incoming telephone line to the LCR telephone. The second modular jack 14 connects the line to the LCR telephone in series from the telephone where the LCR is not implemented. The first switch 16 and the second switch 18 perform a switching operation under the control of the control unit 10. [ When the initial state and the LCR telephone are hooked-off, the first switch 16 is on and the second switch 18 is off. However, if hook-off of the serially connected telephone is detected, the first switch 16 is turned off and the second switch 18 is turned on to perform dialing through the LCR telephone. The first switch 16 is turned on and the second switch 18 is kept off so that the call is established. In addition, when the end of the call is detected, the first switch 16 and the second switch 18 are both turned off so that the LCR phone can stably receive the LCR information. The use state sensing unit 20 senses a hook-on or an off state of the phone in which the LCR is not implemented, and provides the sensing signal D.S to the control unit 10. The bridge circuit units 22 and 26 enable normal operation irrespective of whether the input signal is inverted or not. The power supply unit 24 cuts off the signal corresponding to the AC input from the signal input through the bridge circuit unit 22 and controls the line power source corresponding to the DC to be controlled by the control unit 10, And supplies it to the serially connected telephone. Normally, the telephone becomes impossible to dial unless line power is supplied from the exchange.

Therefore, the line power is supplied because the first switch 16 is turned off when dialing using the series-connected telephone, and the line power supplied from the telephone line is cut off. When the first switch 16 is turned on, there is no need to supply line power, so that the power supply transfer unit 24 operates in place of the first switch 16. The communication circuit unit 28 transmits various signals such as voice transmitted from the LCR telephone to the telephone line side and receives various signals such as voice input from the telephone line. The transmitter-receiver unit 30 comprises a receiver for converting the received electrical voice signal into an audible audio signal and a transmitter for converting the audible audio signal to be transmitted into an electrical audio signal. The DTMF transmitting unit 32 receives the DTMF signal under the control of the controller 10. The DTMF receiving unit 34 receives the DTMF signal, which is a remote control signal input from the telephone line, and provides the DTMF signal to the control unit 10. Also, the DTMF signal is received from the series-connected telephone and is provided to the control unit 10. The memory 36 stores data according to the control program of the control unit 10 and the operation of the LCR telephone. The key input unit 38 has a key matrix structure including a plurality of numeric keys, and provides key data corresponding to the key input to the control unit 10. [ The display unit 40 displays the operation state of the LCR telephone under the control of the control unit 10. [

The processing of the controller 10 according to an embodiment of the present invention will be described in detail with reference to FIGS. 2A and 2B.

When a hook-off of a serially connected telephone set for a counterpart call is detected, forming a loop for transmitting a DTMF signal according to dialing and supplying line power, receiving a DTMF signal from the serially connected telephone set, Determining whether transmission of an access number is necessary; transmitting a DTMF signal that is always received after transmitting the set connection number if it is determined that transmission of the access number is necessary; And transmitting the DTMF signal to the mobile terminal when the DTMF signal is transmitted; and performing a call mode by forming a call loop with the series connected telephone when the DTMF signal is transmitted; Receiving the LCR information and displaying the LCR information; All.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The control unit 10 determines whether or not the serially connected telephone is being used. The determination is determined by the sensing signal D.S provided from the use state sensing unit 20. [ If the hook-off of the telephone connected in series by the use state sensing unit 20 is detected, it is determined in step 212 whether the LCR telephone is hooked-off. If it is determined in step 212 that the call has been hooked-off, the controller 10 proceeds to step 214 to perform a call service according to the LCR telephone. Since the call service is a function normally performed in an LCR telephone, a detailed description will be omitted.

If it is determined in step 214 that the LCR phone is in the hook-on state, the controller 10 proceeds to step 216 and determines whether there is an incoming ring through the telephone line. If the hook-off detected in step 214 is a response to the incoming ring, the controller 10 proceeds to step 218 to perform the call using the series-connected telephone because the LCR function is irrelevant. The control unit 10 maintains the initial state in which the first switch 16 is on and the second switch 18 is off.

On the other hand, if there is no incoming ring signal from the telephone line, if the telephone connected in series is hooked-off, the controller 10 determines that the telephone connected in series should attempt to make a telephone call, And the second switch 18 to form a loop for dialing. The controller 10 sends a control signal C.s2 for turning off the first switch 16 and a control signal C.S3 for turning on the second switch 18 to form the loop . In step 220, since the first switch 16 is turned off, the line power of DC 48V supplied from the telephone line to the serially connected telephone is cut off, making dialing impossible. Accordingly, the controller 10 controls the power supply unit 24 in step 222 to supply the line power provided through the bridge circuit unit 22 to the serially connected telephone set. The controller 10 receives the DTMF signal input through the dialing of the serially connected telephone set in step 224 through the DTMF receiver 34 and temporarily stores the received DTMF signal.

Meanwhile, the controller 10 analyzes the received DTMF signal in step 226 and determines whether transmission of an access number according to the LCR function is necessary. If it is determined that the received DTMF signal requires the LCR function, the controller 10 proceeds to step 228 to control the DTMF transmitter 32 to transmit a DTMF signal corresponding to the received DTMF signal . On the other hand, if it is determined that the received DTMF signal does not need the LCR function, the controller 10 proceeds to step 230 and controls the DTMF transmitter 32 to transmit only the received DTMF signal. When the telephone number dialing is completed in step 228 or 230, the controller 10 proceeds to step 232 to turn on the first switch 16 and turn off the second switch 18. In step 232, a communication loop is established so that the first modular jack 12 and the second modular jack 14 are connected in parallel so that the user can talk directly through the series-connected telephone without going through the LCR telephone . In addition, the LCR telephone maintains the standby state by the step 232. The phone connected in series performs voice communication in step 234 via the formed call loop. The controller 10 determines in step 236 whether the call of the serially connected telephone is terminated. In step 236, detection of a call termination is detected by the hook-on detection of the serially connected telephone from the use state detection unit 20. [ The controller 10 proceeds to step 238 to transmit control signals C.sub.2 and C.sub.3 for turning off both the first switch 16 and the second switch 18 . The first modular jack 12 and the second modular jack 14 are cut off by the control signals C.sub.2 and C.sub.3 and the signals and information received through the first modular jack 12 are Thereby forming a loop to be provided to the LCR telephone. In step 240, the controller 10 receives the LCR information, such as the call time, the charge, and the like, input through the telephone line through the loop. Also, during the reception of the LCR information, the controller 10 determines in step 242 whether the reception of the LCR information is completed. The control unit 10 displays the received LCR information on the display unit 40 in step 244 after the reception of the LCR information is completed. On the other hand, the control unit 10 transmits control signals (C.sub.2 and C.S3) for turning on the first switch 16 and for turning off the second switch 18 according to completion of reception of the LCR information. The loop is maintained in the same state as the initial state by the control signals C.S2, C.S3, and then the function is terminated.

As described above, since the present invention can perform the LCR function even in a telephone having no LCR function connected to the LCR telephone, it is possible to save telephone charges, and in the case of an LCR telephone having a display device such as an LCD, It is possible to grasp the specific sending / receiving situation of a telephone at a glance.

Claims (7)

1. A telephone having an automatic connection number sending function in which a plurality of telephone sets are connected in parallel, A first switch for switching connection between a telephone line and the parallel-connected telephone, A second switch for connecting a telephone number dialed in the parallel-connected telephone, A power supply unit for supplying line power necessary for dialing the parallel-connected telephone; A use state detecting unit for detecting whether or not the parallel-connected telephone sets are used, And a control unit for providing a control signal for controlling the first switch and the second switch and a control signal for controlling the power transmission unit and performing an automatic connection number transmission function according to a telephone number received through the second switch Characterized in that the automatic connection number sending device is provided with an automatic connection number sending function to the connected telephone. [2] The apparatus of claim 1, wherein when the hook-off of the telephone connected in parallel is detected by the use state detection unit, the control unit provides a control signal for blocking the first switch and connecting the second switch Automatic connection number sending device A device that provides automatic connection number sending function to a telephone connected from a telephone set. 3. The method as claimed in claim 2, wherein the control unit connects the first switch and the second switch when the automatic connection number dispatch function is completed, and connects the parallelly connected telephone to the telephone line. The automatic connection number sending function is provided to the telephone connected to the automatic telephone number sending telephone. The mobile communication terminal of claim 3, wherein when the hook-on of the telephone connected in parallel is detected by the use state detection unit, the controller disconnects both the first switch and the second switch, Wherein the automatic connection number transmission function is provided to the telephone connected to the automatic connection number transmission telephone. 2. The telephone according to claim 1, further comprising: a first modular jack for connecting a telephone line; and a modular jack for connecting the telephone to the LCR telephone. Function providing device. A first switch for connecting a telephone line to a connected telephone, a second switch for transmitting a dialed signal from the telephone, a power supply for supplying line power at the time of dialing of the telephone connected in parallel, A method of providing an automatic connection number transmission function to a telephone connected in parallel in an automatic connection number transmission telephone having a use state detection unit for detecting whether or not a telephone is used, A line power supply process for supplying line power when the parallel-connected telephone is hooked-off for dialing, A signal receiving step of forming a loop for blocking the first switch and connecting the second switch to receive the dialed signal; Performing a function of transmitting the automatic reception number according to the received signal; A call loop forming step of connecting the first switch and the second switch when the automatic reception number dispatch function is completed and connecting the parallelly connected telephone to a telephone line; And an initial state switching process of connecting the first switch and the second switch to maintain an initial state when the end of communication of the parallel connected telephone is detected. A method for providing an automatic access number transmission function. The method as claimed in claim 6, further comprising the step of: if the call termination is detected, disconnecting the first switch and the second switch to receive and display the automatic acceptance number transmission information through the telephone line, A method for providing an automatic access number transmission function to a telephone connected to the telephone.