National Enhance Technology Corp.

 Print this page



Industrial 4 Giga LAN Over VDSL2 Extender with DIP Switch

Ordering Information
NV-520G Industrial 4 Giga LAN Over VDSL2 Extender with DIP Switch





Netsys' NV-520G is a VDSL2 port with 4 x10/100/1000Mbps ethernet ports. That provide an end to end solution for industrial applications. NV-520G support high bandwidth up to 160Mbps symmetric and long reach transmission up to 3km, and also supports both Master and Slave modes selectable by DIP Switch. NV-520G's DIN-Rail and Power redundancy features offer quick, easy, safety wide range and high performance broadband / Triper play services to industrial environments such as Factory, MRT, Train station, Ticket vending machine, Parking system, Weather station, Military Training system, Monitoring system, Farm, Jail, Refinery, Passenger ship ....etc.

Flexible Configuration

The NV-520G supports both central office (CO) and customer-premises equipment (CPE) modes selectable through DIP Switch. Customers can do the configuration for different needs adjustment. PIN1 ON of DIP Switch is CPE side, PIN1 OFF of DIP Switch is CO side


Interleave delay support

Interleave delay function is used in digital data transmission technology to protect the transmission against noise issue and data error.If during transit more than a certain amount of data has been lost then the data cannot be correctly decoded. Short bursts of noise on the line can cause these data packets to become corrupt and the bridge has to re-request data which in turn can slow down the overall rate at which data is transmitted. Interleaving is a method of taking data packets, chopping them up into smaller bits and then rearranging them so that once contiguous data is now spaced further apart into a non continuous stream. Data packets are re-assembled by your lan extender.

Easy Installation

The NV-520G may be installed on any level surface (e.g. a table or shelf or rail) that use bracket or DIN rail plate. NV-520G supports plug-and-play installation and is fully compatible with all kinds of network protocols. Furthermore, user can watch the status of each individual port via the LED indicators.

Automatic Bandwidth detection

The NV-520G supports band profile 17a and 30a, it can automatically detect the cable length and bandwidth depending on the distance to the configuration.

About harsh environment applications

The NV-520G can used in the harsh environment, such as -20°C ~ 70°C (-4°F ~ 158°F), and metal case compliant with the IP-30 design. The design of the IP-30 can prevent the invasion of small stones within the NV-520G.


  •  Supports high bandwidth up to 160Mbps symmetric over Line ports
  •  Supports 4 x 10/100/1000M Ethernet ports
  •  Supports long reach mode up to 3 km with 24-gauge phone wire
  •  Supports Interleave depth & G998.4 G.INP
  •  Supports auto speed and 8 profiles mode selectable by DIP switch
  •  DIP switch with Master and Slave mode selectable
  •  Supports Jumbo frame up to 2k bytes
  •  Supports VLAN Tag passthrough
  •  Supports Surge protection
  •  Supports power redundant and wide range dual power input (DC15V ~ 48V)
  •  Supports Overload Current Protection
  •  Supports wide range operating temperature (-20°C ~ 70°C)
  •  Supports Reverse Polarity Protection
  •  Supports alarm contact (relay output - 1 A @ 24 VDC)
  •  Supports DIN-Rail mount installation
  •  Metal case design and compliant with IP30 standard

* Specifications are subject to change without prior notice.


Standard Conformance
 Standard:  IEEE802.3/802.3u/802.3ab Ethernet standard
 ITU-T G993.2 VDSL2 standard
 Regulatory Compliance:  FCC Class A
 RoHS compliance


 Hardware Specifications
 Physical Interface:  4 x RJ-45 10/100/1000Mbps Ethernet port
 1 x RJ-11/Terminal Block connector for VDSL2 line port
 1 x DIP Switch
 1 x removable 6-contact terminal blocks for power1 and alarm contact
 1 x removable 2-contact terminal blocks for power2
 LED indication:  1 x Power LED
 4 x Link/Active Status for Ethernet port
 1 x Link/Speed LED for VDSL2 port
 1 x CO Mode indicator LED
 1 x CPE Mode indicator LED
 Power Supply:  Redundant dual DC input power 15~48V (Removable Terminal Block)
 Maximum Power Consumption:  6W
 VDSL2 Line Code:  Discrete multitone (DMT) modulation
 VDSL2 Transmission Mode:  Packet Transfer Mode (PTM)
 Operating Temperature:  -20°C ~ 70°C (-4°F ~ 158°F) Fanless, free air cooling
 Storage Temperature:  -40°C ~ 70°C (-40°F ~ 158°F)
 Humidity:  5 to 95% (non-condensing)
 Net Weight:  0.63 kg
 Dimensions:  171 x 121 x 35 mm (6.7" x 4.76" x 1.37")


* Specifications are subject to change without prior notice.

* Please equip the anti-static devices during INSTALLATION.




LAN Distance Extension

Two NV-520G acting as a standalone pair is good for Ethernet distance extension over existing telephone wires. With just one pair of AWG-24 copper wire, you can easily connect the maximum data rate of 160Mbps and up to 3km distance support. It is easy-to-use which do not requires installation of additional wiring. Every modular phone jack in the building can become a port on the LAN.


Proper Installation: Train & Metro Stations、Boat and Submarine、Military use、Military Training System、Parking system、Weather station、Amusement park、Farm、Jail & Oil Refinery、Telecom.



Release Date File Version Download
 Oct, 2023  Datasheet  N/A
 Nov, 2023  User's manual  A6

Welcome to Netsys

As the world’s number one source for the fastest VDSL and Ethernet extenders, Netsys was created to bring you the finest quality broadband solutions. Offering the fastest speeds and longest distances, Netsys Ethernet extenders are the ultimate high-speed, long-range solutions for any application. Whether you’re looking for a new Ethernet extender, Ethernet over coax solution, VDSL solution, or a new solution, we have a wide selection of superior-quality products for your needs. If you’re not sure which Ethernet extender is best for your application, our expert staff is standing by to answer any questions you may have.

The best solutions to meet your needs

To bring full satisfaction to our customers, we will continue to strive to develop reliable, better performance, and environmental friendly products. Let us networking your world.

Long Reach LAN Extender solution

Netsys Long Reach solution consists of NV-202 which allows your IP network infrastructure to be deployed flexibly anywhere at long range. It is designed to extend Ethernet transmission over any existing twisted-pair cable or telephone wires for distances up to 3,000m (9,843ft) into any point to point applications.

Last Mile solution

Netsys Last Mile Transmission solution provides VDSL2 for various applications. Netsys CO equipment and CPE devices enable long distance IP Surveillance deployment and many Multi-Media services to realize on local high speed Internet.

Industrial-Grade solution

Netsys Industrial LAN Extenders solution offers high reliability and security to ensure continuous industrial operation in harsh environments such as factory floors, outdoors, ITS (Intelligent Transportation Systems) and at extreme temperatures. The Industrial Ethernet upgrades traditional, proprietary factory-floor networks to a low-cost, high-performance, and scalable architecture.