What do I need to get started?

  • A phone: at home or work, landline, mobile or VoIP (Voice over Internet Protocol).
  • An internet connection: broadband, wi-fi, mobile internet (3G or 4G) or office network.
  • A device that's compatible with the NGT Lite to display and type the conversation: a desktop computer, laptop, tablet or smartphone.

How to get the NGT Lite app

Below is a list of devices and how you get the NGT Lite for them:

  • Android smartphones and tablets (Version 4.1 or later) - Google Play Store
  • iPhones and iPads (iOS 7 or later) - Apple App Store
  • Linux computers (Java 1.7 or later) - This website
  • Mac computers (Java 1.7 or later) - This website
  • Windows computers (XP, Vista, 7, 8, 10 running Java 1.7 or later) - This website

Click here to check the version of Java you're running. This will take you to the Oracle's Java website, check the version of Java on your computer and the page has a link to the latest version of Java.

Setting up the NGT Lite app

  • Download the NGT Lite for your computer or device.
  • Follow the on-screen instructions to install the app.
  • When using the NGT Lite, you've got two connections between you and the NGT Service. There's the phone call and a connection over the internet from the NGT Lite. This is the same whether you're making a call or someone's calling you.
  • The NGT Lite uses your phone number to associate a phone call with the NGT Lite.
  • The NGT Lite doesn't need a permanent connection to the internet. It connects to the NGT Service only when you're making or answering a call. The NGT Lite will disconnect from the NGT Service when it's not being used.

How do I know I'm connected?

The icon at the top of the NGT Lite window shows when it's connected.

Screenshot showing the app is connected
  • App disconnected The NGT Lite isn't connected to the NGT Service (normally because there's no internet connection)
  • App connected with no linked numbers The NGT Lite is connected to the NGT Service and there are no phone numbers linked.
  • App connected, validate number The NGT Lite is connected to the NGT Service and one or more phone numbers need to be validated.
  • App connected, all numbers linked The NGT Lite is connected to the NGT Service, all phone numbers are linked.

Managing phone numbers

Linking phone numbers

The NGT Service uses your phone number to associate the phone call with the NGT Lite connection. To do this, you need to tell the app the phone number, or phone numbers, you'll be using with the app. Here's how:

  1. select the Phone numbers tab and click on Add phone number
  2. type in the full phone number of the handset you want to link to the app and click Link
  3. follow the on-screen instructions to make a voice call to 0800 500 888 from the phone that you want to link. You must make the call to 0800 500 888 from the telephone (landline or mobile) that you are linking
  4. you'll then get a message on the app saying the number's linked.

Note: If you're using a mobile phone and don't get the linked message try linking again but dial 800 500 888. This is because when calling 0800 numbers from some mobile phones you need to dial without the first 0.

Screenshot showing the linked numbers
  • If successfully linked the phone number will appear in the list.
  • You can add up to ten phone numbers to use with the app.
  • You might want to link a desktop app to a fixed line at home, a fixed line at work and a mobile phone.

Validate, remove and withdraw numbers

To validate, remove or withdraw a telephone number, click on the phone number and then click on the relevant button on the right.

  • Validate unknown – validate a phone number that has the status Unknown.
  • Remove from app – removes the phone number from this app. The phone number will stay linked to any other apps it's linked to.
  • Withdraw from the NGT – removes the phone number from all NGT Lites.

Setting the style of your NGT Lite

Screenshot showing the app's styling preferences

Set the style through the icon in the top left-hand corner of the app.

  • You can change fonts under the Your preferences tab. You can change the font type by selecting the required font via the drop-down menu and the size of font by changed by sliding the marker to the size you want.
  • You can also change the colours of the different text by selecting from each drop-down menu.

How I plan to use the NGT Lite

Screenshot showing the TextRelay options of the app

Under the Text Relay tab, you can choose how you plan to use the app by clicking on:

  • typing and hearing – for speech-impaired people
  • typing and reading – deaf user
  • speaking and reading – deaf user who uses VCO.

Firewalls and NGT Lite

Most NGT Lite users will not need to worry about the app working with their firewall. However for some corporate networks with stricter security settings might block the connection between the app and NGTS service. We have included the information below so that network administrators can make the necessary adjustments to enable their users to use NGT.

The NGT Lite establishes the following IP connections with the NGT Service:

  • node1.ngts.org.uk
  • node2.ngts.org.uk
  • node3.ngts.org.uk
  • node4.ngts.org.uk

These are TLS 1.2 connections using port 443 over TCP and are established from NGT Lite to the NGT Service, there are no incoming IP connections. The connections are only required during a call, to add new phone numbers, or check for an incoming call.

Proxy servers

There are three types of business internet connection:

graphic shows 3 types of business internet connection, these are described below

  1. Direct – NGT Lite works ‘out of the box’
  2. Via a proxy server – you might need to change the config file so that NGT Lite knows about the proxy (see: below)
  3. Via a proxy server that requires a user name and password – NGT Lite doesn’t support this

The NGT Lite will get proxy information automatically Internet Options available via Windows Control Panel or Internet Explorer (in Tools), or you can manually set up the host and port by creating a text file called ProxyOverride.cfg in the NGTS folder. The first time you run NGT Lite the NGTS folder is created in your Documents folder in Windows (e.g. C:\Users\username\Documents\NGTS), or your home (username) directory on Mac and Linux computers. A typical ProxyOverride.cfg is shown below:

The NGT Lite does not support authenticated proxies, network administrators must make sure the app can go through the proxy server without requiring password authentication.

Updated: 19 August 2016