When does the UK PSTN switch off?

BT Openreach is retiring the UK PSTN (WLR 2) on 31 January 2027. Every UK business landline must move to a digital service such as VoIP or full-fibre voice before that date.

What is the cheapest UK business VoIP?

Silux Call offers a free seat tier (1 user, 1 UK DDI, 30 minutes/month) and Pay-as-you-go from £0/month + £0.02 per UK landline minute, with no contract. Paid plans start at £6.95/user/month and come with a 30-day free trial.

Does Silux Call have a free trial, and do I need a credit card?

Yes. Every paid plan comes with a 30-day free trial and no credit card is required to start — most UK rivals offer only a 7 or 14-day trial, and several require a card up front. You can also stay on a permanently free seat with no card at all. Signing up takes about 60 seconds.

How quickly can I get a UK virtual landline number?

You can sign up in about 60 seconds and choose a UK virtual landline number (020, 0161, 03 or 0800) instantly — no engineer visit, no hardware and no contract. Existing numbers port across free on Plus and above, typically within 24 hours.

Can I keep my existing phone number?

Yes — Silux Call offers free UK number porting on Plus and above, typically completing in 24 hours. We support PAC and STAC porting workflows.

Does Silux Call work with Microsoft Teams?

Yes — Silux Call supports Microsoft Teams Direct Routing on the Pro tier, including a self-service onboarding wizard that issues the PowerShell snippet for your Teams admin.

Is Silux Call GDPR and HIPAA compliant?

Silux Call ships UK GDPR-compliant call recording with two-party consent flows, plus one-click HIPAA enrolment that locks 6-year retention, KMS-backed encryption, and PCI DTMF redaction. A one-click compliance report exports an auditor-ready PDF.

How does Silux Call block scam calls?

Silux Call screens every inbound call with an AI scam shield in under 0.5 seconds. Known HMRC, parcel, and account-spoof patterns are blocked before your phone rings — a feature no other UK business VoIP provider ships.

Silux Call vs BT Cloud Voice: which UK business phone system wins in 2026?

Looking for a BT Cloud Voice alternative? Silux Call and BT Cloud Voice are both UK incumbent. The short answer: Silux Call wins for UK SMBs on price, bundled AI, and PSTN-switch-off readiness, while BT Cloud Voice (from £10/user/mo) is a known quantity if you are already embedded in it. No AI receptionist, no scam shield, long contracts — below is the full, honest, GBP-priced breakdown for UK businesses.

Is Silux Call a better BT Cloud Voice alternative?

Yes for most UK businesses: Silux Call bills in GBP with no contract, includes an AI receptionist and pre-ring scam-call screening the headline BT Cloud Voice plan does not, and offers a permanently free seat plus a 30-day no-card trial. No AI receptionist, no scam shield, long contracts.

Silux Call

From £0 · UK-domestic · GBP · no contract

Free seat tier (1 user, 1 DDI, 30 mins UK)
Pay-as-you-go (£0.02/min UK landline)
AI receptionist bundled (vs £499 standalone)
Pre-ring AI scam-call shield
Cross-tenant federation (free internal extension dialling)
Real-time call translation as live subtitles
One-click GDPR + HIPAA compliance reporter
Stripe-native reseller billing
White-label brandable mobile + desktop softphone
Microsoft Teams Direct Routing + SAML SSO

BT Cloud Voice

from £10/user/mo · UK incumbent

No AI receptionist, no scam shield, long contracts
No pre-ring AI scam-call shield
No cross-tenant federation
No one-click GDPR + HIPAA reporter
No Stripe-native end-customer billing
No AI receptionist included in the headline price

Pricing side-by-side (GBP)

Plan tier	Silux Call	BT Cloud Voice
Free seat	£0 (1 user, 1 DDI)	Not offered
Pay-as-you-go	£0 + £0.02/min UK landline	Not offered
Entry paid plan	£6.95/user/mo (Lite)	from £10/user/mo
AI receptionist	£199/mo flat per tenant	Add-on or unavailable
Contract	None	Often 12–36 months

Switching from BT Cloud Voice

Audit — we generate a free PSTN switch-off and line-by-line BT Cloud Voice audit (no card).
Port — free PAC / STAC UK number porting on Plus and above, typically 24 hours.
Re-route — copy your IVR, hunt groups and working hours via our import tool.
Run in parallel — keep both providers live for 7 days, then cut over.
Cancel BT Cloud Voice — we provide the cancellation template.

Start 30-day free trial — no card Book a migration call

FAQs — Silux Call vs BT Cloud Voice

Is Silux Call cheaper than BT Cloud Voice?

Silux Call starts at £0 (free seat), Pay-as-you-go at £0.02/min, and £6.95/user/month on Lite. BT Cloud Voice list price: from £10/user/mo. Silux Call also bills in GBP with no contract.

Can I migrate from BT Cloud Voice to Silux Call?

Yes. We offer free UK number porting on Plus and above, typically within 24 hours, plus a guided BT Cloud Voice migration that imports your IVR, hunt groups and working hours.

What does Silux Call do that BT Cloud Voice doesn't?

No AI receptionist, no scam shield, long contracts. Silux Call adds pre-ring AI scam-call screening, cross-tenant federation, a one-click GDPR + HIPAA compliance reporter, Stripe-native reseller billing, real-time call translation, and a permanently free seat tier.

Is BT Cloud Voice or Silux Call better for the 2027 PSTN switch-off?

Both run over IP and survive the switch-off, but Silux Call ships a free per-line PSTN audit and a WLR2 migration plan with every account, which BT Cloud Voice does not bundle.

Does Silux Call have a free trial versus BT Cloud Voice?

Silux Call has a permanently free seat (1 user, 1 UK DDI, 30 minutes) plus a 30-day trial of Plus or Pro, with no card needed for Free or Pay-as-you-go.