Cader NetworksBusiness VoIP phone systems
Hosted VoIP and SIP trunks for Welsh and UK businesses. Keep your number, gain modern features, and be ready well before the 2027 PSTN switch-off. Read our guide on what the copper switch-off means for businesses in Wales.
Hosted VoIP, or SIP trunks for an existing PBX
Two services, depending on what you have got. Hosted VoIP is a complete cloud phone system. Pick this if you do not have an existing on-site PBX, or you are ready to replace one. SIP trunks let you keep your existing PBX and just replace the lines feeding it.
Hosted VoIP pricing
Hosted VoIP is £12.99 +VAT/user/month PAYG (monthly rolling, 30 days notice), or £14.99 +VAT/user/month with 2,000 inclusive UK minutes per user.
Included as standard: call handling, hunt groups, IVR menus, voicemail to email, caller-ID management and conference rooms. Out-of-bundle calls are charged at our published business call rates.
SIP trunks for existing PBX systems
SIP trunks are £9.99 +VAT/channel/month PAYG, or £14.99/channel/month with 2,000 minutes. Note: SIP trunks are priced per channel, not per user.
Keep your existing PBX. We replace just the PSTN lines feeding it, making you switch-off ready with minimal disruption to your current setup.
Numbers and porting
Number porting is £15 per number, capped at £75 per request. New standard numbers are £2/month. Memorable numbers from Silver (£4.99/month + £10 setup) to Gold (£19.99/month + £35 setup) to Platinum (£39.99/month + £35 setup).
Handsets and apps
Business Voice packages with a handset included start at £17.49/user/month +VAT (corded, 24 months, handset yours to keep) or £19.99/user/month +VAT (cordless, 24 months). Both include 2,000 UK minutes per user.
Many teams use the apps instead: mobile app £2.00/user/month +VAT, desktop £2.50/user/month +VAT, or both together £4.99/user/month +VAT.
Plans and handset packages
- Pay per call at business rates
- No minimum term
- 2,000 UK minutes per user
- Fair use applies
- 2,000 UK minutes per user
- Corded handset yours to keep
- 2,000 UK minutes per user
- Cordless handset yours to keep
SIP trunks: £9.99/channel/month +VAT (PAYG) or £14.99/channel/month +VAT with 2,000 minutes. Priced per channel, not per user.
- £12.99 +VAT/user/mo PAYG or £14.99 with 2,000 inclusive UK minutes
- SIP trunks from £9.99 +VAT/channel/mo if you are keeping a PBX
- Number porting £15/number, capped at £75 per request
- Call recording: 30-day free, then from £9.99/user/month +VAT for 12, 24 or 36-month retention
- Mobile and desktop apps to take calls anywhere (from £2.00/user/month +VAT)
- Welsh-based support. You speak to the engineer who set it up.
Why teams move to us
- Modern features without enterprise complexity
- Pricing you can predict, no surprise add-ons
- A real person on the support line, by first name
- Migration handled end to end
- Quote includes everything you need to go live
What businesses ask about VoIP
Hosted VoIP or SIP trunks: which do I need?
Hosted VoIP is the full cloud system, no on-site PBX, just handsets or apps. Pick this if you do not have a phone system or are ready to replace it. SIP trunks keep your existing PBX and only replace the lines feeding it. See our comparison guide.
How quickly can we be live?
New systems with no porting: typically 5 to 10 working days. With number porting: 2 to 4 weeks. We confirm the timeline at order.
What happens if our broadband drops?
VoIP needs an internet connection. We design business systems with optional 4G failover and automatic call diverts to mobile. The end result is usually better resilience than the copper line being replaced.
Can we keep our existing numbers?
Yes. Single number or hundreds, geographic or non-geographic. Number porting is £15 per number, capped at £75 per request.
Are you the cheapest VoIP provider?
No. We are very competitive but we do not lead on lowest price. We lead on features that match the business and on the support team that picks up the phone when something needs fixing. You speak to the engineer who set up your system.
Do you cover multi-site setups?
Yes. Hunt groups span sites, central voicemail, single auto-attendant, multi-site call recording. Quoted per setup.
Important: Digital phone lines need power and an internet connection. In a power cut or broadband outage, calls (including 999) will not work through the line. If you rely on your landline, for example for a telecare alarm or because mobile signal is poor, tell us and we will talk through backup options.
Talk to us about your phone setup.
How many users, what you have now, when you need to be live by. We will come back with a quote that covers everything.