Instead of forwarding calls from your TTNC number to a traditional landline or mobile, with the VoIP User Bolt On you can answer the call over the internet.
The VoIP User can be registered onto a physical handset, or the TTNC Softphone App for Mobile to make and receive low-cost calls with high quality audio.
Outbound Calls displaying your TTNC Number as the Caller ID can easily be made from any registered device, creating a professional image.
Combine a VoIP User with a Call Management Package to have a complete cloud based phone system, all of which is managed via myTTNC - our online control platform.
This is a great service for sole-traders, start-ups, small and home offices as well as teams of remote workers.
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.
Free calls - Inbound and internal
No inbound call charges when using 01, 02, 03, 07 or 084 Numbers to forward to your VoIP device. Call other VoIP Users for free.
Account Wide Forwarding Destination
A VoIP User can be used as the forwarding destination for all numbers within your account.
Use on multiple devices
Use a VoIP handset in the office, and our softphone app on your mobile, giving you the freedom to answer calls on either device, wherever you are.
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 PBX Features
Call Parking with Music on Hold, Call Transfer, Internal Extension Numbers, 3 way calling.
How to get started
- Use our number search below to find the number you want to use.
- Add a VoIP User to your number for each person looking to make or receive calls.
- If required, add PAYG Call Credit or a Monthly Minute Tariff.
- Complete your order.
- Configure the VoIP User details within your online account in myTTNC.
- Register the VoIP User to a VoIP device. If you're using the TTNC Softphone App for Mobile, you can simply scan the QR code using your camera.
- Set up Call Forwarding on the number to send calls to the VoIP User.
That’s it - you’re ready to go!
First, you'll need to order a number by using our search tool below. Once you've found and selected a number, you'll be able to add the VoIP User Bolt On to your order.
Why use TTNC?
- Providing VoIP services for more than 15 years
- 16,000 businesses already use our services
- Range holder of over 7 million phone numbers
- UK owned and operated with 24/7 support
- Multi-Award-Winning VoIP service
- ITSPA member and regulated by Ofcom
- Holders of the ITSPA Quality Mark
- Ofcom approved Code of Practice
Inbound Call Charges
|Inbound Number / Pay As You Go (PAYG)||Rate|
|01, 02, 03 and 07 Numbers ||0p/min|
|084 Service Numbers||0p/min|
|0800 and 0808 Freephone Numbers||2p/min*|
* Price is for calls originating from UK landline; add 2.5p/min for calls originating from UK mobiles.
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.
|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.
The rates shown are per minute and based on calling a UK destination. A minimum cost of 1p applies to each chargeable call.
For all other destinations, please download our rate sheet.Download Rate Sheet
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.
VoIP User FAQ's
What do I need to get started?
A TTNC number with an associated VoIP User.
An Internet connection (3G, 4G or broadband).
A VoIP Phone or the TTNC Softphone App for Mobile.
How reliable is a VoIP call?
As VoIP calls are made over the internet, the reliability will be dependent on your internet connection.
What happens if I lose my Internet connection?
You can set up a failover destination so that calls will be automatically forwarded to your landline or mobile if your VoIP device is offline.
How much bandwidth do I need?
On average a single call would use around 100kbs of bandwidth.
What is call quality like?
If you have a strong Internet connection, call quality will as good as, if not superior to traditional analogue calls.
What Codec does TTNC use?
TTNC uses the G.711a Codec as default, one of the highest quality Codecs available. It provides sound quality superior to analogue.
How many channels or lines are there per VoIP User?
Each VoIP User has 2 channels, this means if you're on a call you can bring a third party into a conference call.
What type of inbound number can I use?
You can use any type of virtual number from TTNC with a VoIP User. Prices start from £20 a number per year.
Can I display multiple numbers as the Caller ID?
A VoIP User will only display the TTNC number it's associated with. If you wish to display multiple numbers, you'll need a VoIP User on each number.
Can I use my number abroad?
Yes, you can use your VoIP User to make and receive calls from any location with an internet connection. We'd recommend you check any restrictions and your data charges ahead of time.
Can I use my number to call the emergency services?
Yes, this can be enabled within myTTNC. You will be asked to supply an address for use by the Emergency Services which needs to be filled out accurately. You can see more details on our Emergency Access Page.