Quality over margin
We route for answer-seizure ratio and audio clarity. Cheaper grey routes exist; we do not sell them, because one bad call costs more than the pennies saved.
About us
A UK voice partner, not just a supplier
We put business telephony back together — routes, numbers, PBX and security from one team that knows how all of it fits.
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Our story
Why VOIPNOX exists
VOIPNOX exists because business telephony got needlessly complicated. Customers were being asked to sign multi-year contracts for routes they had not tested, buy numbers from one company, a PBX from another, and then find their own security consultant when the whole thing got scanned.
We put it back together. VOIPNOX supplies Tier-1 UK voice routes on straightforward Pay As You Go terms, provides landline and mobile DIDs, and designs, installs and supports the Asterisk platforms that sit behind them — on-premises or in the cloud. We handle the firewall rules and access controls that keep it safe, and we build the websites that bring the calls in.
The approach is deliberately old-fashioned: know the customer's setup, pick up the phone, fix the problem. Everything else — the portal, the routing, the documentation — is there to support that.
UK focusedRoutes, numbers and support
Fast provisioningOften same working day
Secure by defaultHardened, encrypted transport
Same-day setupon most PAYG accounts
Why VOIPNOX
Built by engineers who answer the phone
Plenty of providers will sell you minutes. Fewer will log into your PBX at 7pm to work out why one carrier is mangling DTMF. That difference is the whole point of VOIPNOX.
Pay As You Go, genuinely
Top up, send traffic, stop whenever you like. No monthly minimum, no termination fee, no twelve-month tie-in buried in the terms.
Quality-first routing
We buy Tier-1 UK capacity and route for connection rates and audio clarity, so your calls sound like calls — not like a bad conference line.
Security baked in
Firewall rules, ACLs and spend limits are part of the build, not an upsell. Your platform is hardened against fraud from day one.
One team, whole stack
Routes, numbers, PBX, IVR, firewall and website. One supplier who understands how all of it fits together and owns the outcome.
How we work
The principles behind every build
Four things we will not compromise on, whatever the size of the account.
Honest commercials
Per-second billing, no rounding tricks, no minimum spend and no contract you need a solicitor to leave. What you are quoted is what appears on the invoice.
Secure from day one
Every platform we touch gets firewall rules, ACLs and spend limits as standard. Security is part of the build, never a line item added after an incident.
Engineers, not scripts
When you get in touch you reach somebody who can read a SIP trace, not a call centre reading from a flowchart. Problems get diagnosed, not escalated indefinitely.
What we cover
One supplier, the whole voice stack
UK Tier-1 Voice Routes
Premium UK termination on Pay As You Go terms, billed per second.
UK DIDs — Landline & Mobile
Geographic and mobile numbers delivered over SIP to your PBX.
Asterisk PBX Installation
On-premises or cloud builds, fully configured and documented.
IVR Solutions
Multi-level menus, time conditions and routing built around your team.
Firewall & ACL Configuration
Tight access control so only your traffic ever reaches your PBX.
Web Development
Fast, responsive, search-friendly sites built by the same team.
Let's talk about your setup
Whether you need routes today or a full platform build, the conversation starts the same way — tell us what you have now.