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Main distribution frame line bank, safety unit and main distribution frame

A technology of general distribution frame and security unit, applied in electrical components, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve problems such as increased crosstalk, aggravated crosstalk coupling difference of port 1, and increased crosstalk, etc. To achieve the effect of reducing crosstalk

Active Publication Date: 2020-02-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the protection ground and the alarm signal are in the middle of the differential signals of each port, taking port 2 as the attacker and port 1 as the victim, the difference in crosstalk coupling between 2a and 2b to port 1 is further exacerbated, compared to no protection ground and In the case of the alarm indication pin, the crosstalk between port 2 and port 1 will further increase
At the same time, as the frequency increases, the crosstalk will also increase significantly
Conventional MDF terminal blocks and security units are no longer suitable for high-bandwidth copper wire transmission technologies such as G.FAST

Method used

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  • Main distribution frame line bank, safety unit and main distribution frame
  • Main distribution frame line bank, safety unit and main distribution frame
  • Main distribution frame line bank, safety unit and main distribution frame

Examples

Experimental program
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Effect test

application example 1

[0073] This application example provides an MDF terminal block, which is suitable for internal modules that do not require overcurrent and overvoltage protection. The circuit diagram of this embodiment is as Figure 6b As shown, the wiring diagram is as Figure 9 As shown, the first metal protective wire is set on the terminal block of the main distribution frame, and the first protective metal unit, the second protective metal unit, the third protective metal unit, and the fourth protective metal unit are set in the terminal block , the first metal protection wire is electrically connected to the first protection metal unit and the second protection metal unit by crimping or plugging. The first protective metal unit, the second protective metal unit, the third protective metal unit, and the fourth protective metal unit are realized by metal reeds, which are called protective metal reeds.

[0074] Specifically, the thin metal wire extending on the first metal protection wire...

application example 2

[0076] This application example provides an MDF terminal block, and this embodiment is suitable for an outside line module that has a security unit but does not require an alarm indication. The circuit diagram of this embodiment is as Figure 6b As shown, wiring as Figure 10 As shown, the metal protective wire (namely the first metal protective wire) is installed on the terminal block housing, and the upper extended thin metal wire is connected to the protective metal reed in the terminal block by crimping or plugging. The first protective metal unit, the second protective metal unit, the third protective metal unit, and the fourth protective metal unit are realized by metal reeds, which are called protective metal reeds. The protective metal reed adopts the same shape as the metal reed used in the internal line interface and the external line interface. The protective metal reed has a crimping groove (or socket) and a contact, and the contact is in a normally closed state....

application example 3

[0078] This application example provides an MDF terminal block, and this embodiment is suitable for an outside line module that requires an alarm indication. The circuit diagram of this embodiment is as Figure 7a shown. In this embodiment, the first metal protection wire is arranged on one side of the terminal block casing, the second metal protection wire is arranged on the other side of the connection row casing, and the first metal protection wire is connected by crimping or The first protective metal unit and the second protective metal unit are electrically connected by plugging, and the second metal protective wire is electrically connected to the third protective metal unit and the fourth protective metal unit by crimping or plugging . In this embodiment, the first metal protection line is also called a protection ground metal protection line, and the second metal protection line is also called an alarm indication metal protection line.

[0079] Such as Figure 11 ...

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PUM

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Abstract

The invention discloses a main distribution frame line bank, a safety unit and a main distribution frame, wherein the main distribution frame line bank comprises at least one port, and the main distribution frame line bank comprises at least one port. At least one port is provided with an anti-crosstalk device. The anti-crosstalk device comprises a first protective metal unit arranged on one sideof the port and a second protective metal unit arranged on the other side of the port, wherein the first metal protection wire is electrically connected with the first protection metal unit and the second protection metal unit, or is electrically connected with the first protection metal unit and the second protection metal unit through the safety unit when the safety unit is inserted. According to the scheme provided by the embodiment of the invention, the equipotential body is provided for shielding crosstalk, and crosstalk of the port to other ports is carried out.

Description

technical field [0001] Embodiments of the present invention relate to but are not limited to a wiring bar of a main distribution frame, a security unit and a main distribution frame. Background technique [0002] The Main Distribution Frame (MDF) is a connection and protection device in the communication line, which is used to connect the central office equipment and the user terminal. Such as figure 1 As shown, the main distribution frame 10 includes a security terminal block 11 (also called an external line module) and a test terminal block 12 (also called an internal line module). The security terminal block 11 and the test terminal block 12 are connected, wherein the security terminal block 11 is used When accessing the user terminal 13, the test wiring row 12 is used to connect the central office equipment 14, and the security unit 15 can be installed on the security wiring row 11 as an overvoltage and overcurrent protection device. In the following, when not explicit...

Claims

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Application Information

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IPC IPC(8): H04Q1/14
CPCH04Q1/142H04Q1/146H04Q1/14H02H3/04
Inventor 唐荣道
Owner ZTE CORP
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