KR101061511B1 - Remotely controlled communication terminal device - Google Patents

Abstract

Communication terminal apparatus according to the present invention, a plurality of terminators are connected to each of a plurality of lines; And a line selection circuit for selecting at least one of the plurality of lines, each of the plurality of terminators connecting any one of a plurality of different end circuits to an end of a corresponding line.

Description

Remotely controlled communication terminal device {REMOTE CONTROLLED COMMUNICATION TERMINAL DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system and relates to a communication terminal apparatus capable of measuring characteristics of a plurality of lines at a station side.

The present invention is derived from the research conducted as part of the Ministry of Knowledge Economy's information and communication standard development support project [Task Management Number: 2008-P1-31-08K00, Task name: Telecommunication equipment technical standards research].

Traditional voice-oriented communication services are rapidly evolving into high-speed, broadband digital data services (eg, xDSL). Therefore, not only the performance of the terminal device but also the quality of the communication line is a very important service quality factor. Such high-speed digital data services are increasing in large cities, but small and medium cities and rural areas are also using data services such as ISDN in addition to voice calls. The communication line quality factors for providing such services have limited criteria such as power induced noise and line noise. And noise among the quality deterrent elements of the PSTN (Pubic Switched Telephone Network) is probably the most sensitive part of the call. Except facility failures, the sources of noise that may occur in subscriber communication lines include power influence caused by power lines and radio frequency interference (RFI), in which broadcast sounds are heard during calls due to nearby broadcasting facilities. There is this.

The noise voltage limit standards and measurement techniques of communication lines in the voice frequency band to secure communication quality are applied differently in different countries. In addition, in order to quickly identify various noise environment changes and causes of noise occurring in a communication line, there is an urgent need for a method for detecting a failure without directly measuring the subscriber end.

The construction of circuits for noise measurement or analysis of communication circuits has constituted a single circuit at the end of a single circuit. Therefore, it took a lot of time to change the termination circuit. Although measurement and analysis of multiple lines is possible, much time and effort is required to configure and reconfigure the termination circuit. In other words, they did not respond quickly to the need for selection or replacement of circuits to be measured or analyzed, or for easy selection and replacement of end circuits of individual circuits in actual communication signal transmission environment, rather than at laboratory level. In addition, it was difficult to measure and analyze various communication environments at the same time by configuring various termination circuits on multiple lines at the same time.

The present invention provides a control structure for facilitating selection and measurement of lines or termination circuits at the measurement stage in order to solve the above problems.

Communication terminal device of the present invention for achieving the above object, a plurality of terminators connected to each of a plurality of lines; And a line selection circuit for selecting at least one of the plurality of lines, each of the plurality of terminators connecting any one of a plurality of different end circuits to an end of a corresponding line.

In this embodiment, each of the plurality of terminators further includes a select switch for connecting any one of the plurality of terminating circuits with the corresponding line in response to a circuit select signal.

In this embodiment, each of the plurality of terminators further includes an activator for activating the plurality of terminating circuits in response to a line selection signal.

In this embodiment, at least one of the plurality of termination circuits includes a termination resistor for measuring a power induced voltage on the corresponding line.

In this embodiment, at least one of the plurality of termination circuits has a circuit structure for measuring the balance of the selected line.

In this embodiment, at least one of the plurality of termination circuits includes any one of circuits for measuring line noise or line to noise of the selected line.

In this embodiment, further comprising a measuring stage for measuring the line characteristics measured through the selected termination circuit of the selected line.

In this embodiment, the measurement stage includes a remote controller for generating a circuit selection signal for selecting at least one of the plurality of circuits and a circuit selection signal for selecting any one of the plurality of termination circuits. do.

In this embodiment, further comprising a control channel for transmitting the line selection signal and the circuit selection signal.

The present invention can easily select a line under test and a termination circuit located at a long distance, so that problems and characteristics of communication lines and circuits can be quickly identified in various environments.

It is to be understood that both the foregoing general description and the following detailed description are exemplary, and that additional explanations of the claimed invention are provided. Reference numerals are shown in detail in preferred embodiments of the invention, examples of which are shown in the reference figures. In any case, like reference numerals are used in the description and the drawings to refer to the same or like parts. DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention.

Hereinafter, the operating principle of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily flow the gist of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

1 is a block diagram schematically showing the structure of a telecommunications system 100 according to the present invention. Referring to FIG. 1, the measurement stage 110 including the remote controller 111 and the measurement stage 120 including the terminator 121 are connected to the transmission line 130. In addition, a separate control channel 135 for transmitting a control signal by the remote controller 111 is included.

The measuring stage 110 corresponds to a telephone station. The measuring stage 110 includes circuits for measuring various noises or induced noise voltages flowing into the communication line, or for measuring an unintended failure of the equipment. In addition, the measurement stage 110 includes a remote controller 111. The remote controller 111 includes a structure for selecting various lines or circuits of the terminal 120 under measurement. The measuring unit 110 may select the line and the characteristics of the line to be measured or tested by the measurer. The measurer may select one of a plurality of lines through the remote controller 111 and select an end circuit configured to remotely measure the characteristics of the selected line.

The terminal 120 to be measured corresponds to the exchange or the subscriber. In response to a control signal provided from the remote controller 111, the terminator 121 included in the terminal 120 to be measured may select a line or various termination circuits. Terminator 121 will include components for switching the selected line and the selected termination circuit. Here, the terminal 120 to be measured may include a configuration of an exchange station or exchange equipment.

The transmission line 130 may be composed of a wired line such as a coaxial cable or a twisted pair wire. However, the transmission line 130 may be applied to a wireless transmission method other than a wired method consisting of copper wire. In this case, the measured value at the terminal 120 to be measured may be retransmitted through the wireless channel to the measuring terminal 110.

FIG. 2 is a block diagram schematically illustrating the configuration of the remote controller 111 of FIG. 1. Referring to FIG. 2, the remote controller 111 includes control logic 210, a line selector 220, and a circuit selector 230 for selecting a specific line or a specific termination circuit of the terminator 121.

The control logic 210 controls the circuit selector 220 and the circuit selector 230 to select a specific line and a specific termination circuit of the terminal 120 to be measured by referring to the information received from the measurer. Although not shown, the control logic 210 executes a control operation to select the termination circuit corresponding to the measurement target line and the characteristic to be measured received from the measurer.

The line selector 220 outputs a line select signal L_SEL for selecting at least one of the plurality of lines L1, L2, L3,..., Li under the control of the control logic 210. Here, the line selector 220 may select only one line, or may select two or more lines at the same time. The circuit selector 230 outputs a circuit selection signal C_SEL for selecting at least one of the plurality of termination circuits C1, C2, C3,..., Cj under the control of the control logic 210.

Through the above-described configuration, the remote controller 111 selects a line for performing a test and selects one of a plurality of termination circuits in order to analyze a specific failure or a specific noise characteristic of the selected line.

3 is a block diagram briefly illustrating a configuration of the terminator 121 illustrated in FIG. 1. Referring to FIG. 3, the terminator 121 includes a line selection circuit 310 for activating at least one of the plurality of lines in response to the line selection signal L_SEL. The terminator 121 includes a plurality of lines selected by line activation signals L_SEL_1 to L_SEL_i for activating the selected line. The plurality of lines each include a first terminator 320, a second terminator 330, a third terminator 340, an i-terminator 350, and the like.

The line selection circuit 310 may select at least one of the plurality of lines in response to the line selection signal L_SEL generated from the line selector 220 shown in FIG. 2. The line selection circuit 310 generates line activation signals L_SEL_1 to L_SEL_i where i is a natural number corresponding to each of the lines for selectively activating the selected line.

The first terminator 320 is activated or deactivated according to the line activation signal L_SEL_1 provided from the line selection circuit 310. In addition, the first terminator 320 includes a plurality of termination circuits. One of the plurality of termination circuits is selected by the circuit selection signal C_SEL. The selected termination circuit will constitute the termination of the line L1. For example, when the line activation signal L_SEL_1 indicates activation, and the circuit selection signal C_SEL is input to select the termination circuit for measuring the magnitude of the induced voltage, the first terminal 320 is the magnitude of the induced voltage. You will select the termination circuit to measure. Therefore, the measurement terminal 110 can measure the induced voltage through the line L1.

Each of the second to i-th terminators 330, 340, and 350 may be provided in substantially the same configuration as the first terminator 320. The termination circuits selected by the respective terminators constitute the termination of each of the lines L1, L2, L3, ..., Li. Then, the measurement stage can measure the noise characteristic or the degree of unbalance for the selected line or all the lines.

The terminator selected by the circuit activation signal will again select any one of the plurality of termination circuits included therein in response to the circuit selection signal C_SEL. The configuration of the terminator 121 described above may be used as a concept including equipment such as an exchanger.

4 is a block diagram exemplarily illustrating a configuration of the first terminator 320 of FIG. 3. Referring to FIG. 4, the first terminator 320 activates each end circuit in response to the circuit activation signal L_SEL_1, and the circuit L1 and the plurality of circuits in response to the circuit selection signal C_SEL. It includes a selection switch 322 for connecting any one of the termination circuits (323 ~ 326) of.

The activation unit 321 activates the plurality of termination circuits 323 ˜ 326 according to the line activation signal L_SEL_1. The plurality of termination circuits 323 ˜ 326 activated by the activation unit 321 may be connected to one end of the line by the selection switch 322.

The selection switch 322 selects the termination circuit to be connected to the line L1 in response to the circuit selection signal C_SEL. As shown, in any subscriber or line in which j (j is a natural number) of termination circuits, the termination circuit is selected for a particular purpose by the circuit selection signal C_SEL. That is, if the measurement stage wants to measure the degree of line unbalance for the line, the circuit selection signal C_SEL is transmitted to select the termination circuit configured to measure the line unbalance. At this time, the selection switch 322 connects any one selected termination circuit to the line L1.

The selection of the termination circuit by the selection switch 322 enables the quick response of the station to the terminal 120 or the subscriber terminal to be measured. Here, the plurality of termination circuits 323 to 326 are not limited to the termination circuits for test or measurement purposes. That is, the plurality of termination circuits may include a spare circuit for recovering a fault circuit that can quickly solve a problem in response to a failure or failure of a subscriber.

FIG. 5 is a circuit diagram schematically illustrating an example of the plurality of termination circuits 323 to 326 illustrated in FIG. 4. Referring to Figure 5, it is shown that different termination circuits may be provided for each purpose.

The first termination circuit C1 represents a 600 Ω termination resistor for measuring the noise power of the selected line. The voltage (Vm) measured by the 600 Ω termination resistor allows the measurement stage to determine the characteristics of the line, including lines and exchanges. For example, through the selection of the first termination circuit C1, the measurement stage can estimate the induced noise power caused by the power line failure or the noise powers caused by the high-speed railway.

The second termination circuit C2 shows a termination structure for measuring line-to-earth noise. The line-to-earth noise in the second termination circuit C2 may be expressed as Ng = (V _T + V _R ) / 2. The third termination circuit C3 briefly shows a termination structure for opening a line. The j-th termination circuit Cj shows a structure in which all the circuits are grounded.

The above termination circuits can be selected at the measurement stage. Therefore, the cost of connecting and measuring the probe directly at the subscriber end can be reduced.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be defined by the equivalents of the claims of the present invention as well as the following claims.

1 is a block diagram showing the structure of the present invention;

2 is a block diagram showing the structure of the remote controller of the present invention;

3 is a block diagram showing the structure of a terminator of the present invention;

4 is a block diagram showing the structure of the first terminator of FIG. 3; And

5 is a circuit diagram showing an example of the termination circuits of FIG.

Claims (9)

A plurality of terminators connected to each of the plurality of lines; And A circuit selection circuit for selecting at least one of the plurality of circuits, And each of the plurality of terminators connects one of a plurality of different termination circuits to an end of a corresponding line. The method of claim 1, Each of the plurality of terminators, And a selection switch for connecting any one of said plurality of termination circuits with said corresponding line in response to a circuit selection signal. The method of claim 2, Each of the plurality of terminators, And an activation unit for activating the plurality of end circuits in response to a line selection signal. The method of claim 1, At least one of the plurality of termination circuits comprises a termination resistor for measuring a power induced voltage on the corresponding line. The method of claim 1, At least one of the plurality of termination circuits has a circuit structure for measuring the balance of the selected line. The method of claim 1, And at least one of the plurality of termination circuits comprises any one of circuits for measuring line noise or line to ground noise of the selected line. The method of claim 1, And a measurement terminal for measuring line characteristics measured through the selected termination circuit of the selected line. The method of claim 7, wherein And the measurement stage comprises a remote controller for generating a line selection signal for selecting at least one of the plurality of lines and a circuit selection signal for selecting any one of the plurality of termination circuits. The method of claim 8, And a control channel for transmitting the line selection signal and the circuit selection signal.

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