Turn your TTNC number into a virtual phone line. Start handling your inbound and outbound calls over your Internet connection.

Add a VoIP User Bolt On to any TTNC number for just £4 a month. You’ll then be able to set up a softphone or a VoIP handset to use with that number.

Calls into your TTNC number will ring your softphone, for example. And calls out from that softphone will display your TTNC number as the caller ID. This is a great service for sole-traders, entrepreneurs, start-ups, corporates and teams of remote workers.



a month

  • Advanced cloud platform

    Outbound Caller ID

    Show your TTNC Number as the caller ID to the person you’re calling. Be professional and keep your personal number private

  • Advanced cloud platform

    Free calls - Inbound and internal

    No inbound call charges when using 01, 02, 03 or 084 Numbers to forward to your VoIP device. Call other VoIP Users for free

  • Advanced cloud platform

    Inclusive call handling features

    Caller ID, call forwarding, voicemail, Automatic Failover, call transfer, call parking, music on hold, 3 way calling

  • Advanced cloud platform

    Use on multiple devices

    Use a VoIP handset in the office and a softphone app on your mobile so you can answer calls on either device and not miss calls

  • Advanced cloud platform

    Single User or Multi User – No limits

    Add or remove VoIP Users on a number at anytime, with no limits on the amount of Users you can add. Pay only for what you use

  • Advanced cloud platform

    Manage in the Cloud

    Our platform, myTTNC, gives you total control of VoIP Users, phone numbers, call handling services and real-time call reporting

What do you need and how does it work?

In most cases, all you need is a TTNC number, a softphone and an Internet connection.

  • Add one VoIP User for each person who wants to use the service. You can increase or decrease the amount of VoIP Users at any time, just paying for what you need.
  • After adding a VoIP User to a number, you need to configure it and create a username and password using the myTTNC portal. You'll need these details so you can set up a VoIP device (softphone or VoIP phone) to use the service.
  • Once you've configured the VoIP User and are set up on a VoIP device, you can forward your number to that device. We also provide PSTN failover, so you can choose to have incoming calls automatically forwarded to your landline or mobile if your VoIP device is offline.
  • Making outbound calls with our VoIP service is easy. It has the added benefit of showing your TTNC Number as the caller ID (CLI), creating a professional image.

Why use TTNC?

  • Providing Voice over IP services for 10 years +
  • Member of ITSPA and regulated by Ofcom
  • Ofcom approved Code of Practice
  • 11,000 businesses already use our services
  • Number block owner with 7 million + numbers
  • UK owned and operated with 24/7 support

Outbound Call Charges

Pay As You Go (PAYG) is great if your call volumes are lower or unknown. Pay Monthly is ideal for those who spend a lot of time on the phone and want our lowest call rates.

Pay As You Go (PAYG)

Top up Amounts Calling to a UK Landline Calling to a UK Mobile
£10, £25, £50 1.5p/min 5.5p/min

Top up call credit on your account only when you need to.
Set up Automatic Top Up to manage this for you.

Pay Monthly

Tariffs Calling to a UK Landline
(UK Landline minutes)
Calling to a UK Mobile
(UK Mobile minutes)
£10 per month 680
£15 per month 1,080
£25 per month 1,950
£45 per month 3,800
£60 per month 5,500

Adds call credit to your account on the 1st of each month.
Buy more PAYG call credit to get extra minutes at the same rate.

The rates shown are per minute and based on calling a UK destination. A minimum cost of 1p applies to each chargeable call.

For international rates, please use our check rate tool.

Inbound Call Charges

Inbound Number / Pay As You Go (PAYG) Rate
01, 02 and 03 Numbers
084 Service Numbers 0p/min
0800 and 0808 Freephone Numbers 2p/min*
International Numbers 2p/min

* Price is for calls originating from UK landline; add 2.5p/min for calls originating from UK mobiles.
Calls from UK Payphones are not accepted unless requested and cost an additional 85p/min.

Calls to an 01, 02 or 03 number forwarding to any other SIP address costs 1p per minute. Calls to an 0800 number forwarding to any other SIP address is 3.5p per minute.

It’s important for me to display my TTNC number on outbound calls for privacy, consistency and allowing me to easily call back missed calls. It works and it’s saving me money. Can’t really ask for more!

Using an analogue adaptor, the setup and configuration was simple. Inbound and outbound call quality has been excellent. It’s important to be able to make outbound calls displaying our number so customers know who we are.

Looking for SIP Trunks or for call centre and enterprise level solutions?

We support connections ranging from two channels for single users and small PBX equipped businesses to an unlimited amount of channels for call centres and enterprise customers connecting multiple PBX's in different locations.

If your requirements sound more like the latter then check out our other SIP Trunking products and get in touch with us. We’d love to work out a solution that will work best for you.

Ordering and adding VoIP Users

If you already have an account with TTNC and want to make use of this service from today, you can simply add this, along with any of our other services, at any time through the store in myTTNC.

Otherwise, click the button below and you'll be up and running in minutes.

Start now and find your Number

VoIP User FAQ's

  • What do I need to get started?

    An Internet connection (3G, 4G, broadband)

    A Virtual Number from TTNC

    A softphone or IP desk phone

  • How much bandwidth do I need?

    On average, 3 concurrent calls would take about 256kbs of bandwidth when using the G.711a Codec, which is a high quality Codec TTNC uses

  • What Codec does TTNC use?

    TTNC uses the G.711a Codec, which is one of the highest quality Codecs available. It provides digital quality and sound quality is superior to analog.

  • What is a Codec?

    Codec stands for Coder-decoder. It converts an audio signal (your voice) into a compressed digital format for transmission (VoIP) and then back into an uncompressed audio signal for replay.

    Codecs vary in the sound quality and the bandwidth required, most softphones, IP phones, IP PBXs and Gateways supports several different Codecs.

  • Is voicemail free?

    Yes, all TTNC numbers come with a basic voicemail service which can be managed via myTTNC. Voicemail messages are emailed to your inbox and can also be listened to and stored online. Calls taken by voicemail are charged at 2p/min.

    You can also upgrade to Voicemail Pro for £2 a month which allows you to edit or upload your own Voicemail greeting message rather than using our standard versions.

  • Can I use my number to call the emergency services?

    No, you can't use your VoIP User service to make calls to the emergency services. Access to the emergency services requires you to register a location of your devices. We didn't feel this would work with the portable nature of VoIP Users as you'd have to update your address each time you change location. So we've restricted them from accessing the emergency services.

  • Can I use my number abroad?

    Yes, you can use your VoIP phone service to make and receive calls from wherever you have an Internet connection. If you’re abroad and using your mobile, just check what your data charges will be with your mobile provider.

  • What kind of Internet connection do I need?

    A standard broadband connection is sufficient to surf the Internet and use for voice calls at the same time.

  • What is call quality like?

    Again, if you have a good Internet connection, call quality will be superior or at least the same as you receive when you use a landline or mobile phone.

  • How reliable is VoIP and SIP?

    The bottom line is that it’s as reliable as your Internet connection, this is the most important factor.

  • Can you supply VoIP handsets?

    We provide high-quality handsets from the biggest brands to suit every task and budget. All preconfigured and ready to go.
    You can see the range here: https://www.ttnc.co.uk/services/voip-services/voip-hardware.

  • What are the best softphones to use?

    We’d recommend using either of Counterpath’s products - Bria for mobile or X-Lite for desktop. Or ZoiPer provide a mobile and desktop solution. These are the ones the TTNC team are using regularly.

  • Can I use a softphone app?

    Yes you can. You can use a softphone on your computer, tablet or smartphone. Once you've created a VoIP User for your number you can enter the user details into your softphone and start making and receiving calls.

  • Can I use my existing number?

    Yes you can. We can port almost any existing UK telephone number from any supplier onto our system.

    Please contact us for more information or see our Number Porting page here.

  • Can I forward all of my numbers (or multiple numbers) to a single VoIP User?

    You can forward your inbound calls from any number to a single VoIP User. But 2 things to consider - a single VoIP User can only have 2 concurrent calls max. Also a VoIP User is linked directly with a number. That sets the CLI for your outbound calls. So any call out will only ever show 1 of your numbers. If you want to show a different CLI, you'll need a unique VoIP User on each number.

  • What happens if I lose my Internet connection?

    When configuring a VoIP User, you can set up PSTN failover so that calls will be automatically forwarded to your landline or mobile if your VoIP phone or Softphone isn’t connected to the Internet.

  • How do I set up a VoIP User on a softphone or VoIP Phone?

    The VoIP User enters the username and password into a softphone or VoIP Phone. This enables the VoIP device to register on our network allowing calls to be made or received.

  • How do I forward my phone number to a VoIP User?

    Each VoIP User will be automatically added as a contact to your address book and will appear in your destinations list, making it easy to forward any of your numbers to that VoIP User.

  • How many channels or lines are there per VoIP User?

    Each User has 2 channels, which means if you're on a call already you could call out to someone else and bring them into a conference call. We expect a VoIP User to be a human so seeing more than 2 concurrent calls would be unusual in our experience and we would contact the User.

  • What type of inbound number can I use?

    You can use any type of number including UK Freephone numbers, 03 UK wide numbers and UK Local numbers. We can supply any of these with prices starting from £20 a number a year.

  • What is VoIP and SIP?

    VoIP stands for Voice over Internet Protocol - a phone service that uses the Internet. SIP stands for Session Initiation Protocol. It’s a protocol commonly used for VoIP applications (like ours) or even video calls and instant messaging.

For more FAQ's please visit our FAQ's page

VoIP User Help and User guides Download the VoIP Services PDF