---
product_id: 106414445
title: "NTE5C MK2 + VDSL MK4 OpenReach Telephone Master Socket + Back Box"
brand: "openreach"
price: "£19.94"
currency: GBP
in_stock: true
reviews_count: 8
category: "Openreach"
url: https://www.desertcart.co.uk/products/106414445-nte5c-mk2-vdsl-mk4-openreach-telephone-master-socket-back-box
store_origin: GB
region: United Kingdom
---

# Boosts VDSL speeds by ~2Mbps Tool-less connector for easy install Surge protection optimized for stability NTE5C MK2 + VDSL MK4 OpenReach Telephone Master Socket + Back Box

**Brand:** openreach
**Price:** £19.94
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your connection, upgrade your life!

## Quick Answers

- **What is this?** NTE5C MK2 + VDSL MK4 OpenReach Telephone Master Socket + Back Box by openreach
- **How much does it cost?** £19.94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/106414445-nte5c-mk2-vdsl-mk4-openreach-telephone-master-socket-back-box)

## Best For

- openreach enthusiasts

## Why This Product

- Trusted openreach brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Speed-Optimized Design:** Experience up to 2Mbps faster VDSL connections with a socket engineered for high-speed broadband.
- • **Effortless Installation:** Tool-less connectors mean you can upgrade your master socket in under 10 minutes—no electrician needed.
- • **Integrated ADSL Filtering:** Built-in filters eliminate the need for external ADSL filters, decluttering your setup and improving signal clarity.
- • **OpenReach Certified Quality:** Backed by OpenReach standards and including a durable back box with M3.5 machine screws for a secure, professional finish.
- • **Surge Protection Without Speed Sacrifice:** Advanced resistor and ring capacitor design protects your line without compromising internet performance.

## Overview

The NTE5C MK2 + VDSL MK4 OpenReach Telephone Master Socket with back box is a professional-grade, easy-to-install master socket designed to enhance VDSL and ADSL broadband speeds. Featuring tool-less connectors, integrated filtering, and optimized surge protection, it delivers improved signal-to-noise ratio and faster internet performance, making it the go-to upgrade for stable, high-speed home or office connections.

## Description

This is the updated NTE5C MK2 + VDSL MK4 with clear cam locks PLUS quality backbox. NTE5C Contains resistor and ring capacitor. Voltage surge protectors are no longer used in as they can reduce ADSL and VDSL speeds. Support website included.

Review: Easy to change, improves S/N performance. - Easy change replacement for the earlier generation if Openreach/BT termination box. Just two wires needed - and there should only be two connected in an existing master socket - so cut the old off (one at a time) insert wires into tool-less connector and push down. That’s it. Ideal for connections with VDSL/VDSL2 as the design is better for higher speeds. You can also remove any ADSL filters too as they are now inside this version. No anti-surge in these versions - which really isn’t an issue of any type unless you are on top of a hill or in a lightning prone area! I changed the master socket to one of these in under 10 minutes and saw an immediate increase in line traffic speeds of approx 2Mbps download. This is on a 40/10 VDSL circuit. Signal to noise improved by about 2dB. Line length is just over 750m.
Review: A cleverly-designed device - I had to fit a new telephone master socket as my builders had removed the one installed by BT/Openreach. This is the latest and official socket which has a front plate that can be detached for problem diagnosis. It has 'cam-lock' wire connectors that do not require any tools. You will need to look on-line to work out how to make the connections, though this is not difficult if you have some knowledge of electrics. Strictly speaking, you are not meant to fit the master socket yourself, although during the current lockdown, that is what BT told me to do! The only downside is that it protrudes a couple of centimetres further from the wall than the earlier sockets, and I'm not keen on the sloping top edge, but that is being rather picky.

## Features

- Includes quality backbox and M3.5 machine screws.
- Especially Designed To Support Cup Sizes From C To F
- Heat Moulded Inner-Cups Encapsulate The Bust To Limit Movement And Prevent Chaffing

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07LFMPVX4 |
| Answering System Type | Digital |
| Best Sellers Rank | 72,487 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1,896 in Telephones, VoIP & Accessories |
| Brand | openreach |
| Brand Name | openreach |
| Colour | black |
| Compatible Devices | PSTN, Answering Machines, Fax Machines |
| Customer Reviews | 4.5 out of 5 stars 663 Reviews |
| Dialer Type | Single Keypad |
| Dialler type | Single Keypad |
| Enclosure Material | Metal, Plastic |
| Is there Caller ID | No |
| Manufacturer | openreach |
| Manufacturer Part Number | 2021-01FU-4-43022 |
| Material | Metal, Plastic |
| Model Number | 2021-01FU-4-43022 |
| Multiline Operation | Single-Line Operation |
| Power Source | Corded Electric |
| Power source | Corded Electric |
| Telephone Type | Corded |
| Telephone type | Corded |

## Product Details

- **Answering system type:** Digital
- **Brand:** openreach
- **Caller identification:** No
- **Colour:** black
- **Compatible devices:** PSTN, Answering Machines, Fax Machines
- **Dialler type:** Single Keypad
- **Material:** Metal, Plastic
- **Multiline operation:** Single-Line Operation
- **Power source:** Corded Electric
- **Telephone type:** Corded

## Images

![NTE5C MK2 + VDSL MK4 OpenReach Telephone Master Socket + Back Box - Image 1](https://m.media-amazon.com/images/I/71tsYk7XKcL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to change, improves S/N performance.
*by A***W on 7 June 2019*

Easy change replacement for the earlier generation if Openreach/BT termination box. Just two wires needed - and there should only be two connected in an existing master socket - so cut the old off (one at a time) insert wires into tool-less connector and push down. That’s it. Ideal for connections with VDSL/VDSL2 as the design is better for higher speeds. You can also remove any ADSL filters too as they are now inside this version. No anti-surge in these versions - which really isn’t an issue of any type unless you are on top of a hill or in a lightning prone area! I changed the master socket to one of these in under 10 minutes and saw an immediate increase in line traffic speeds of approx 2Mbps download. This is on a 40/10 VDSL circuit. Signal to noise improved by about 2dB. Line length is just over 750m.

### ⭐⭐⭐⭐⭐ A cleverly-designed device
*by R***R on 6 June 2020*

I had to fit a new telephone master socket as my builders had removed the one installed by BT/Openreach. This is the latest and official socket which has a front plate that can be detached for problem diagnosis. It has 'cam-lock' wire connectors that do not require any tools. You will need to look on-line to work out how to make the connections, though this is not difficult if you have some knowledge of electrics. Strictly speaking, you are not meant to fit the master socket yourself, although during the current lockdown, that is what BT told me to do! The only downside is that it protrudes a couple of centimetres further from the wall than the earlier sockets, and I'm not keen on the sloping top edge, but that is being rather picky.

### ⭐⭐⭐⭐ LATEST OPEN REACH TELEPHONE SOCKET
*by M***E on 16 August 2019*

THIS SHOULD HAVE BEEN A HAPPY EXPERIENCE AS FAR AS AMAZON GOES BUT NOT AS FAR AS OPEN REACH GOES. THEIR TECHNICIAN GOT DOWN ONTO HIS KNEES TO INSPECT THE SOCKET OF THE INCOMING LINE AND SAID ' WHERE DID YOU GET THESE - THEY ARE OUR PROPERTY?' I simply told him AMAZON, just like the booster in the other room. 'BOOSTER? - let me have a look ....' After 30 seconds he said . 'Shouldn't have that either, that belongs to SKY'. 'If that is so then why was I charged £50?' 'That's no good - just tested it and it blew the line'. The line was fixed but the socket and the booster are still unused and it seems that the days of courtesy and good manners are over....

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-20*