KR20010039004A - Apparatus for connecting main distribution frame of subscriber line in switching system - Google Patents

Abstract

PURPOSE: An apparatus for connecting an MDF(Main Distribution Frame) in a mobile switching center is provided to offer a connection device for the line connection between an MDF and an ADSL system, to configure the connection device as a connector for connection with the ADSL system and tip/ring pins for connection with the MDF, and to suitably install an arbitrary subscriber line for ADSL service by minimizing a line connection distance between the MDF and the ADSL system. CONSTITUTION: An apparatus for connecting an MDF in a mobile switching center is composed of an MDF(100), a PSTN exchange(200), a DSLAM(Digital Subscriber Line Access Module)(300) and a connection part(400). The MDF(100) receives voice and data signals from a generic subscriber and an ADSL subscriber. The PSTN exchange(200) executes switching for the generic subscriber's voice and data signals from the MDF(100) or outputs the switched signals to the MDF(100). The DSLAM(300) provided with a splitter shelf combines an input signal with an ADSL signal modulated in a DMT(Discrete MultiTone) pattern at a relevant splitter. The connection part(400) is comprised of an MDF connection part and a DSLAM connection part. The connection part(400) is connected with the MDF(100) by the first 25 pin champ connector and is connected with the DSLAM(300) by the second 25 pin champ connector.

Description

APPARATUS FOR CONNECTING MAIN DISTRIBUTION FRAME OF SUBSCRIBER LINE IN SWITCHING SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subscriber line distribution panel access device in an exchange office system. In particular, the present invention provides a high-speed multimedia service such as high-speed Internet service and video-on-demand service by using an existing telephone line. Asymmetrical Digital Subscriber Line (hereinafter referred to as ADSL) Connects the subscriber line for service to the splitter of the ADSL device and mixes it with the Discrete Multitone (DMT) signal output from the ADSL device and transmits it back to the corresponding subscriber line. The present invention relates to a subscriber line distribution panel connection device in a switching center system.

Conventional switching center system has been used by connecting terminal board for connecting subscriber line to ADSL system or connecting to jumper wire directly from system's back board.

However, in case of using jumper wire connection method directly between subscriber line and ADSL system in telephone company, first, terminal board must be installed in system to connect telephone subscriber line to jumper wire to ADSL system. Secondly, due to the limitation of space in the national office, secondly, it is difficult to use the standard racks used in the home office equipment because the mechanical design of the terminal boards must be considered in the system. If two lines (Tip, Ring) are connected to the system, the cabling work becomes distracting and difficult. Fourth, after connecting all the lines of the subscriber who wants ADSL service from the MDF in the office to the ADSL system, The signal mixed with ADSL signal and voice signal must be dragged from ADSL device to MDF. Evil laying work was difficult and took up a lot of space.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a connection device for connecting a line between a subscriber line distribution panel (MDF) and an ADSL system in a national company, and this connection device Is composed of a connector for connection with ADSL system and TIP / RING pin for connection with subscriber line distribution panel (MDF), and is installed in a proper place in the office to minimize the line connection distance between the line distribution panel and ADSL system. The present invention provides a subscriber line distribution panel access device in a switching center system that provides a method of properly laying a subscriber line for any ADSL service among subscribers.

In order to achieve the above object, in the switching center system of the present invention, the subscriber line distribution panel connection device includes an MDF, a PSTN switching unit, and a DSLAM.

The voice and data signals of the general subscriber and the ADSL subscriber are received from the MDF, and the signals of the general subscriber and the ADSL subscriber are separated and output to the DSLAM, and the voice and data signals for the general subscriber and the ADSL subscriber voice and data signals are outputted from the DSLAM. It is characterized in that it comprises a connection to receive the input to be input to the MDF they are separated.

1 is a functional block diagram showing a configuration of a subscriber line distribution panel connection apparatus in an exchange office system according to an embodiment of the present invention;

FIG. 2 is a functional block diagram showing a configuration of a connection unit among subscriber line distribution panel connection devices in the switching center system according to the embodiment of the present invention according to FIG. 1;

3 is a detailed configuration diagram of a connection unit among subscriber line distribution panel connection devices in the switching center system according to the embodiment of the present invention according to FIG.

<Description of the code | symbol about the principal part of drawing>

100: MDF 200: PSTN exchanger

300: DSLAM 400: connection

410: MDF connection 420: DSLAM connection

POTS1, POTS2, POTS3: 1st terminal board

LINE1, LINE2, LINE3: 2nd terminal board

PCON1, PCON2, PCON3: First 25-Pin Champ Connector

LCON1, LCON2, LCON3: 2nd 25-pin Champ Connector

EMBODIMENT OF THE INVENTION Hereinafter, the subscriber line distribution board connection apparatus in the switching center system by this invention is demonstrated in detail with reference to attached drawing.

FIG. 1 is a functional block diagram showing a configuration of a subscriber line distribution panel connection device in a switching center system according to an embodiment of the present invention. FIG. 2 is a block diagram of a switching center system according to an embodiment of the present invention according to FIG. A functional block diagram showing a configuration of a connection unit among subscriber line distribution panel connection devices. In the switching center system according to an embodiment of the present invention, the subscriber line distribution panel connection device includes an MDF (Main Distribution Frame) 100 and a PSTN (Public). Switch Telephone Network (200) switch 200, a Digital Subscriber Line Access Module (DSLAM) 300, and a connection 400.

The MDF 100 receives voice and data signals from general subscribers and ADSL subscribers, distributes the PSTN subscriber lines, outputs them, and separates the lines of the subscribers who want the ADSL service, disconnects the lines connected to the subscriber side, and outputs them to other terminals. It receives the POTS signal and the DMT signal, and transmits them to the subscriber who wants the ADSL service.

In addition, the PSTN switch 200 receives a voice and data signal of a general telephone subscriber from the MDF 100 and switches it, or outputs the switched signal to the MDF 100.

The DSLAM 300 receives the PSTN signal of the subscriber through a cable connected to a 25-pin champ connector (PCON (POTS Connecter) 1, PCON2, PCON3) through a printed circuit board, and a low pass filter and a high pass filter. And a splitter self that synthesizes the analog POTS signal and transmits it to the modem side (ATU-R), and separates the upstream signal coming from the modem into the POTS signal and the ADSL signal, and divides the input signal into the DMT in the corresponding splitter. It combines with the ADSL signal modulated in a manner. Here, the DSLAM 300 is composed of a plurality of modem cells in one concentrating self. One modem self accommodates 18 subscriber units and one self capacity is 72 subscribers based on four subscribers per unit. Therefore, in the DSLAM 300, three POTS connection connectors and three line connection connectors should be attached to the backplane so that a total of six 25-pin chamfer connectors exist.

In addition, the connection unit 400 includes an MDF connection unit 410 and a DSLAM connection unit 420, and the subscriber line distribution panel in the form of terminal blocks (POTS1, POTS2, POTS3, LINE1, LINE2, LINE3) in units of 25 pins. It is connected to the configured TIP and RING pins (2W), and to the DSLAM device is connected to the second 25-pin chamfer connectors (LCON1, LCON2, LCON3), and the subscriber's PSTN signal is connected to the first 25-pin chamfer connector through the printed circuit board. Connect to (PCON1, PCON2, PCON3) and input to DSLAM (300) through the cable, and if the line where POTS signal and ADSL signal are combined is called a line, the line-side signal is connected to the chamfer connector at the splitter self of DSLAM (300). It receives through the second terminal board (LINE1, LINE2, LINE3) of the connection unit 400, and connects this line signal to the first terminal board (POTS1, POTS2, POTS3) TIP, RING pin through the printed circuit board MDF ( The jumper wire is connected to 100).

Meanwhile, the MDF connection unit 410 mounted in the connection unit 400 receives voice and data signals of a general subscriber and an ADSL subscriber from the MDF 100, and receives a voice and data signal for a general subscriber from the DSLAM 300. And ADSL subscriber voice and data signals to be input to the MDF (100) while they are separated.

In addition, the DSLAM access unit 420 mounted in the connection unit 400 separates the signals of the general subscriber and the ADSL subscriber to the DSLAM, and outputs the voice and data signals for the general subscriber and the ADSL subscriber voice and data signals from the DSLAM. The role of receiving input.

3 is a detailed configuration diagram of a connection part 400 among subscriber line distribution panel connection devices in the switching center system according to an embodiment of the present invention according to FIG. 1, wherein the connection part 400 is connected to the MDF 100 as shown in the figure. Six chamfered connectors, such as connectors (PCON1, PCON2, PCON3) and connectors (PCON1, PCON2, PCON3) connected to the DSLAM 300, are required. In addition, a total of six terminal boards are required, such as three POTS terminal boards (POTS1, POTS2, POTS3) and three LINE terminal boards (LINE1, LINE2, LINE3) connected to the DSLAM 300, for the MDF 100 connection. Do. The terminal board and connector for the POTS connection part are located on the left side, and the terminal board and connector for the LINE connection part where the POTS signal and the DMT signal are combined are located on the right side. This is because the ADSL equipment installed in the national office consists of hundreds of subscribers or more, so the line and cable should be systematically operated when laying the cable between the MDF and the connecting device and the cable between the connecting device and the DSLAM device. Therefore, when the POTS side and the LINE side are separated and disposed as in the present invention, the laying operation is possible without twisting the line. Here, the connection part 400 is in a state where the POTS side and the LINE side are separated, respectively, and the terminal board and the chamfer connector are connected in a pattern on the printed circuit board. In the pattern connection, TIP pin 1 of the terminal board is connected to No. 1 of the connector, RING pin 1 of the terminal board is sequentially connected to No. 2 of the connector, and TIP 24 and RING 24 are sequentially connected to No. 47 and 48 of the connector, respectively. This is how it is connected. And pins 49 and 50 of the chamfer connector are treated as light emitting diodes with negative resistance without connecting to the terminal board and used as a signal to detect the cable sheathing state in the DSLAM device. Since the subscriber unit of DSLAM (300) device accommodates 4, 6, and 8 line units, pins 49 and 50 are not used for subscribers, and TIP / RING pins 25 for terminal boards are also used for subscribers. Do not use. Therefore, leave this pin in NC (No Connection) state or use it as GND if necessary. Since the connecting device is a device that connects the MDF and SDLAM devices using a line and a cable, the function of monitoring the cable connection is very important. The connection with the MDF (100) is not a problem because it is connected by the wrapping method using a jumper wire, but the connection with the DSLAM (300) device is connected with the chamfer connector, so the cable may be detached or not connected properly. At the same time, the service is interrupted. Therefore, even when the device is mounted on the DSLAM 300 device side and the device is removed from the connection device, the 49 and 50 pins are used as the cable hernia signal so that the operator can detect the state.

As described above, according to the subscriber line distribution panel connecting apparatus in the switching center system according to the present invention, there is provided a connecting device for connecting the line between the subscriber line distribution panel (MDF) and the ADSL system in a domestic company, and the connecting apparatus is an ADSL. It consists of a connector for connection to the system and a TIP / RING pin for connection to the subscriber line distribution panel (MDF), and is installed in a proper place in the country to minimize the line connection distance between the line distribution panel and the ADSL system. There is an outstanding effect of presenting a method of properly laying a subscriber line for any ADSL service.

Claims (6)

In an exchange station system comprising an MDF, a PSTN exchange, and a DSLAM, The voice and data signals of the general subscriber and the ADSL subscriber are received from the MDF, and the signals of the general subscriber and the ADSL subscriber are separated and output to the DSLAM, and the voice and data signals for the general subscriber and the ADSL subscriber voice and data signals are outputted from the DSLAM. The subscriber line distribution panel connection apparatus according to claim 1, further comprising a connection unit for receiving the input and inputting them to the MDF while being separated. The method of claim 1, The connection unit receives voice and data signals of the general subscriber and the ADSL subscriber from the MDF, receives the voice and data signals for the general subscriber and the voice and data signals for the ADSL subscriber, and inputs them separately to the MDF. ; And a DSLAM connection unit for dividing a signal of a general subscriber and an ADSL subscriber into the DSLAM and receiving a general subscriber voice and data signal and an ADSL subscriber voice and data signal from the DSLAM. In subscriber line distribution panel connection device. The method of claim 2, The MDF connection unit is used to input three to the MDF, the other three are used to receive the output from the MDF, and includes six terminal boards composed of 25-pin units having a TIP / RING pin type A subscriber line distribution panel connection device in an exchange station system. The method of claim 2, The DSLAM connection comprises three 25-pin chamfer connectors, three of which are used for input to the DSLAM and three of which are used to receive output from the DSLAM. Connecting device. The method of claim 4, wherein And the 25-pin chamfer connector comprises pins 49/50 which are treated with light emitting diodes having negative resistance to display the stripped state of the cable in the DSLAM device. The method of claim 1, A first terminal panel mounted on the left side of the connection substrate and used to receive output from the MDF, and having three arranged in a row in the longitudinal direction; A first 25-pin champ connector mounted on the right side of the first terminal board and used for input to the DSLAM, the three being arranged in a row in the longitudinal direction; A second 25-pin chamfer connector mounted on the right side of the first 25-pin champ connector and used to receive output from a DSLAM, and three of which are arranged in a longitudinal direction; And a second terminal board mounted on the right side of the second 25-pin champ connector and used for input to the MDF, and three of which are arranged in a row in the longitudinal direction.