KR100456113B1 - Separation type WLL terminal having a line loop selection function and controlling method therefore - Google Patents

Abstract

The present invention provides a separate WLL terminal connected to a plurality of wire telephones, a call current detection unit for detecting a hook-off signal of the wire telephone, and a hook-off signal processing unit for processing individual hook-off signals detected through the call current detection unit; And an MSM unit for generating a call current blocking control signal by determining an individual hook-off signal input from the hook-off signal processing unit, and controlling switching of a line connected to each of the rear ends of the call current detection unit and connected to each landline telephone. It provides a UE terminal having a line loop selection function including a relay switch and a switching control unit for controlling each relay switch according to the call current blocking control signal of the MSM unit.

The present invention detects only hooked telephones among a plurality of landline telephones connected to the line connection port, and blocks all remaining lines of the telephone line by switching means, so that call power is supplied to other landline telephones other than the currently used telephone line. This prevents a decrease in the handset current level, which significantly improves the call quality, and also cuts off the power supply to all other landlines except for the one currently in use. Therefore, the security of the call can be maximized accordingly.

Description

Separation type WLL terminal having a line loop selection function and controlling method therefore}

The present invention relates to a UE terminal having a line loop selection function and a control method thereof. In particular, the line of the remaining wire telephone is detected by a switching means by detecting only a hooked-off telephone among a plurality of wire telephones connected to the line connection port. The present invention relates to a deuluelul terminal equipped with a line loop selection function for blocking the supply of call power to other landline telephones in addition to the landline telephone currently in use, and a control method thereof.

In general, a wireless local loop (WLL) system is a telephone system that wirelessly connects subscriber lines within a distance of about 2-6 [km] from a base station without using a conventional telephone line. Many WLL-type systems have been developed and used, such as satellite systems, fixed microwave systems, cellular technology systems, and cordless systems. Used.

WLL system using this cellular technology can use the same network as cellular mobile phone or PERSONAL COMMUNICATION SERVICE (PCS) and can cover a wider area, making the network more economical. The WLL system is largely divided into a WSC (Wireless Switching Center) for processing a communication signal of a subscriber network transmitted wirelessly, and a plurality of WLL terminals forming a call according to the channel assignment signal of the WSC. In addition, the WLL terminals as described above are divided into separate and integrated terminals.

Then, referring to the conventional detachable WLL terminal as described above with reference to FIG. 1, the RF unit 72 forms a wireless call with the WSC 71 by processing an RF signal that flows in and out of the WLL terminal 70, and the A mobile station modem (MSM) 73 for modulating or demodulating and outputting a communication signal input and output through the RF unit 72 to a baseband signal, and controlling the overall function of the WLL terminal 70, and the MSM unit 73 Communication between a plurality of wired telephones 75A-N connected to a separate WLL terminal 70 and a codec 74 for converting a digital voice signal input from the digital signal into an analog signal or an analog signal input into a digital signal. An interface unit 76A-N for interfacing a signal, a slick unit 77 connected between the codec 74 and the interface unit 76A-N to supply a call power or transmit a communication signal, and the separate WLL Power supply for supplying the operating voltage of the terminal 70 Payment 78.

Meanwhile, referring to the operation of the conventional detachable WLL terminal as described above, first, a plurality of wired telephones 75A-N are connected to the interface unit 76A-N of the WLL terminal 70, and then a power cord is connected. Then, the power supply unit 78 of the separate WLL terminal 70 converts the input power voltage and supplies it to each unit. At this time, when making a call using any one of the wired telephones 75A, the slick unit 77 supplies the call power of, for example, -48 [V] to the wired telephone 75A. The communication signal of the wired telephone 75A is interfaced through the interface unit 76A and input to the slick unit 77. Then, the slick unit 77 transmits the input communication signal of the landline telephone 75A to the codec 74. In addition, the codec 74 converts the input analog communication signal into a digital signal and transmits it to the MSM unit 73. The MSM unit 73 modulates the input digital communication signal, processes the RF signal through the RF unit 72, and transmits the RF signal to the corresponding terminal (not shown) to execute a normal call.

However, since the conventional detachable WLL terminal is provided with all of the call power to the other wired telephones if any one of the wired telephones connected to the interface unit has reduced the handset current level, thereby significantly reducing the call quality of the wired telephone. In addition, the landline telephone connected to the WLL terminal has a problem in that there is no security of the call because the handset of the rest of the telephones is heard even if only one telephone to be used is used.

Accordingly, the present invention has been invented to solve the conventional problems as described above, by detecting only the hooked off of the plurality of landline telephones connected to the line connection port by blocking all remaining lines of the telephone line by the switching means, It is possible to prevent the reduction of handset current level by blocking the supply of call power to other wired telephones in addition to the wired telephones in use. The purpose is to provide.

Another object of the present invention is to block the power supply to all other landline telephones other than the currently used landline telephone to hear the contents of the call currently in use in other phones, so the line loop can maximize the security of the contents accordingly It is to provide a UE terminal with a selection function and a control method thereof.

The present invention for achieving the above object is a separate WLL terminal connected to a plurality of landline telephones, a call current detection unit for detecting each of the hook-off signal of the landline telephone, and the individual hook-off signal detected through the call current detection unit A hook-off signal processing unit for processing a; and an MSM unit for generating a call current blocking control signal by determining an individual hook-off signal input from the hook-off signal processing unit; It provides a UE terminal having a line loop selection function including a relay switch for controlling the switching of the line connected to the switch and a switching control unit for controlling each relay switch according to the call current blocking control signal of the MSM unit.

Another feature of the present invention is that there is a separate line hookoff check step of checking whether there is a hooked-off phone among the wired phones connected in the detachable WLL terminal, and there is a hooked-up phone among the wired phones connected to the individual line hookoff check step. If it is confirmed, the individual line selection step connects the line only to the currently hooked-off landline phone and blocks all remaining lines of the landline phone, and supplies the call power to the currently hook-off landline phone after the individual line selection step. A duplex having a line loop selection function comprising a call power supply step of executing and a normal line connection step of connecting a call line of all connected landline phones when the call of the currently hooked-off landline phone ends after the call power supply step. Provides a method for controlling a UE terminal.

1 is an explanatory diagram illustrating a conventional detachable WLL terminal.

2 is an explanatory diagram illustrating a detachable WLL terminal of the present invention.

3 is a flowchart of the present invention.

<Detailed Description of Codes>

1: WLL terminal 2A-N: Landline

3A-N: Interface part 4A-N: Talk current detector

5: hook-off signal processing unit 6: MSM unit

7A-N: Relay Switch 8: Switching Control Unit

9: RF unit 10: codec

11: slick

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

As shown in FIG. 2, the present invention provides an interface unit 3A-N for interfacing communication signals of a plurality of landline telephones 2A-N connected to a separate WLL terminal 1, and the wireline telephones 2A-N. A call-off current detection unit 4A-N for detecting a hook-off signal of a hook-off signal, a hook-off signal processing unit 5 for processing individual hook-off signals detected through the call-current detection unit 4A-N, and the hook-off signal; An MSM unit 6 for generating a call current blocking control signal by judging individual hook-off signals input from the signal processing unit 5, and controlling overall functions of the WLL terminal 1; and the call current detection units 4A-N. Relay switch 7A-N which is connected to each of the rear ends of the control panel and controls the switching of the line connected to the respective landline telephones 2A-N, and each relay according to the call current blocking control signal of the MSM unit 6; And a switching controller 8 for controlling the switches 7A-N.

One end of the MSM unit 6 is connected to an RF unit 9 for processing RF signals of the call signal flowing into and out of the WLL terminal 1 and transmitting the RF signal to the wireless call, and another end of the MSM unit 6. Has a codec 10 for converting an input digital voice signal into an analog signal or converting an input analog signal into a digital signal, and an output terminal of the codec 10 is connected to each output via a relay switch 7A-N. The slick unit 11 for supplying call power or transmitting a communication signal is connected.

Next, the operation and effects of the present invention as described above will be described.

First, the terminal of the present invention proceeds to the individual line hookoff determination step S2 in the initial state S1 as shown in FIG. 3 to determine whether there is a hooked-out telephone out of the connected landline telephones. At this time, as a result of the determination during the individual line hookoff determination step (S2), if there is no hooked-off telephone out of the connected landline, it ends. However, as a result of the determination during the individual line hookoff determination step (S2), if there is a hooked telephone out of the connected landline telephone, the process proceeds to the individual line selection stage (S3) to connect the line only to the currently hooked-up landline telephone and to the remaining landline. Block all phone lines.

In addition, after the individual line selection step (S3) proceeds to the call power supply step (S4) to supply the call power to the wired telephone currently hooked off to execute the call function. Then, after the call power supply step (S4) proceeds to the call end determination step (S5) to determine whether the call of the currently hooked off the landline telephone. At this time, as a result of the determination during the call termination determination step (S5), if the call of the currently hooked-off landline telephone is not terminated, the process returns to the previous stage (S4) and repeats the loop.

However, as a result of the determination during the call termination determination step (S5), if the call of the currently hooked-off landline phone is terminated, the process proceeds to the normal line connection step (S6) to connect the call lines of all connected landline phones.

That is, a plurality of wire telephones 2A-N are connected to each interface unit 3A-N of the detachable WLL terminal 1. At this time, the call current detection units 4A-N connected to the rear ends of the respective interface units 3A-N continue to check whether the wired telephones 2A-N are hooked off. Here, if any one of the wired telephones 2A-N, for example, the wired telephone 2A is hooked off, the call current detector 4A detects it and transmits it to the hookoff signal processor 5. Then, the hookoff signal processing section 5 transmits the individual hookoff signal detected from the individual talk current detection section 4A to the MSM section 6. Then, the MSM unit 6 determines the individual hook-off signal of the input hook-off signal processing unit 5, checks the corresponding wire telephone 2A, and outputs a call current cut control signal according to the switching controller 8. .

Then, the switching control unit 8 controls the relay switch 7A connected to the corresponding line according to the call current blocking control signal of the MSM unit 6 to form a line only with the wireline telephone 2A currently hooked off and the remaining relay switches. Turn off all of 7B-N. That is, since the relay switches 7B-N are open, all the lines connected to these relay switches 7B-N are closed.

At this time, the slick unit 11 supplies the call power of, for example, -48 [V] to the wired telephone 2A to which the current line is connected. Then, the communication signal of the wired telephone 2A is interfaced through the interface unit 3A, the call current detection unit 4A, and the relay switch 7A and input to the slick unit 11. Then, the slick unit 11 transmits the input communication signal of the wired telephone 2A to the codec 10. In addition, the codec 10 converts the input analog communication signal into a digital signal and transmits it to the MSM unit 6. Then, the MSM unit 6 modulates the input digital communication signal, processes the RF signal through the RF unit 9, and transmits it to the corresponding terminal to perform a normal call.

Here, since the line is closed to the other landline telephones 2B-N other than the hooked-up telephone 2A, since the call power is not supplied, the transmission / reception level of the current telephone line 2A does not decrease. The tone is not heard by another phone.

On the other hand, when the call of the landline telephone 2A is terminated during the call process, the corresponding call current detection unit 4A detects it and transmits it to the MSM unit 6 via the hook-off signal processing unit 5. Then, the MSM unit 6 turns on all the relay switches 7A-N through the switching control unit 8 by determining the input detection signal, so that the call lines are connected to all the wire phones 2A-N.

As described above, the present invention detects only the hooked-off phone among the plurality of wired telephones connected to the line connection port and blocks all remaining wired telephone lines by the switching means, thereby making calls to other wired telephones other than the currently used wired telephone. It cuts off the power supply to prevent the reduction of the handset current level, and thus has the advantage of significantly improving the call quality.

In addition, according to the present invention, all the power supply to the other landline phone other than the landline phone currently in use can be cut off, so you can not hear the call content currently in use from another phone, thereby maximizing the security of the call content. There is also.

Claims (2)

In the detachable WLL terminal connected with a plurality of landline telephones, Determine a call current detector for detecting a hookoff signal of a landline telephone, a hookoff signal processor for processing individual hookoff signals detected through the call current detector, and an individual hookoff signal input from the hookoff signal processor; According to the MSM unit for generating a call current blocking control signal, a relay switch connected to each of the rear end of the call current detection unit to control the switching of the line connected to each landline telephone, and according to the call current blocking control signal of the MSM unit The UE terminal with a line loop selection function comprising a switching control unit for controlling each relay switch. In the separate WLL terminal, if the individual line hookoff check step is performed to check whether there is a hooked-out call among the landline phones connected, and if it is confirmed that there is a hookoff call among the landline phones connected to the individual line hookoff check step, the current hookoff is performed. The individual line selection step of connecting the line only to the fixed landline and blocking the remaining lines of the other landline, and the call power supply step of executing the call function by supplying the call power to the currently hooked-off landline after the individual line selection step. And the line loop selection function comprising a normal line connection step of connecting the call lines of all the connected landline phones when the call of the currently hooked-off landline phone is terminated after the call power supply step. Terminal control method.