VOIP / SIP
Receive calls free via a VoIP. Turn your existing mobile or other internet enabled device into a VoIP extension



Use VoIP/SIP to receive calls free and make low cost outbound calls.
Adding a VOIP SIP extension to your virtual phone number means that as well as making outbound calls, you can now also receive incoming calls via your softphone extension, removing any call forwarding charges*
For just £1 per month you can add a softphone extension to your virtual phone number. This can be used either on your mobile smartphone, or PC or laptop or existing SIP enabled hardware to make outbound calls using your new virtual phone number as your outbound caller ID and receive calls to your number too!
It’s extremely simple to set up, all you need to do is install zoiper (from either the app store or google play), select outbound calling on your number people online customer portal, scan the QR code and you will be ready to start making calls.
You can add multiple VoIP / SIP extensions to your telephone number, meaning that you can distribute incoming calls across multiple users as well as having more than one device to make a call, unlike usual landlines.
Port your existing number
You can even turn your existing number into a virtual phone number by moving away from your normal supplier and porting your number to Number People! Meaning you can answer and make calls anywhere you are, you will no longer to tied to a physical location.
We also have porting agreements with other virtual number providers, so if you like our services but don’t want to change your existing numbers, then just move them to us!
Simply sign up for a free account using a temporary number. Once your account is created, navigate to the ‘Number Porting’ section within your online customer portal here to submit your porting request.
How can I use this VoIP / SIP extension?
Our VOIP / SIP accounts can be used across multiple devices, allowing home users, small businesses and large businesses alike to take advantage of our virtual phone numbers.
- A SIP / VOIP enabled phone can be programmed to use with our accounts meaning that if you want to use it in a home or office setting then it’s just like using a normal phone for staff or family members, so it would be a very familiar “normal” experience to use the phones for outgoing and incoming calls.
- As a mobile app – Simply install the Zoiper softphone app on your mobile phone and then scan a QR code we give you to instantly set up a softphone extension on your mobile phone. Your outgoing and/or incoming calls can then be made via the application (bypassing any call forwarding charges to your mobile)
- A standard phone can be used alongside an ATA box (Analogue Telephone Adapter) to enable the phone to be used with VoIP / SIP. Once the ATA box has been provisioned, the phone can then be used to make and receive calls using your new virtual phone number.
- On a PC or laptop – By simply installing a softphone app on your PC or laptop, you can use that equipment to make and receive calls. This would also require a headset with a microphone to use for the calls (like you would do for Skype)
(*if using alongside a freephone 0800 number your 7.5p per min incoming charge will still remain)
Why use a Number People VoIP / SIP?
- Free Number – use our number selector to find a free UK phone number
- Receive calls for free, no call forwarding charges
- Just £1 per user per month
- Make outbound calls presenting your Number People number as your outbound caller ID
- Add as many users as you need
- Great alternative to a BT line – no install costs or expensive line rentals
- Distribute incoming calls across users
- FREE calls between users
- Call out displaying your new number as the caller ID
- Easily change call routing using our mobile portal
- Forward calls to mobiles/landlines/VoIP/SIP or a mixture of all
- No complicated codes for fiddly set up
- Choose any number, a UK geographic, 0843 national, 033 local rate, 0800 freephone
- Port in your existing telephone number
Start Your FREE Trial Here
Use the number selector to find your free number



Get a number for any UK area
Choose from around 1 million FREE virtual phone numbers for any UK town or city.
Get a national 0843 or local rate 033 or freephone 0800 number!
Answer calls anywhere
Forward calls on your existing number anywhere.
From 1.5p per minute






or answer calls on any mobile, PC or laptop device using any app.
Unlimited for just £1 per month
Supercharge your landline number from just £1 extra / month
Our bolt-on Pro features mean that you can
supercharge your number with:
- Personalised voicemail
- Customised Auto Attendant Menus
- Call greetings
- Call Recording
- Customised Music on Hold
- Plus much more…



Speedy set-up



With no hassle or fuss you can quickly activate a telephone number of your choice with no upfront payment
Low call rates



Divert to landlines for 1½ppm. Mobiles for just 7ppm. 0800 numbers cost an additional 7½ppm.
Pre pay



Top up as and when you need to, or opt for your balance to be topped up automatically – it’s up to you!
No contract



No contract ties, commitments or initial payment required
Mobile portal



Make instant changes, view balance, top up and add more numbers via our mobile portal
Free trial



No initial payment required – test your number for free before you need to top up