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 14-day free trial (1 user, 1 UK number, 30 minutes) with no card required. Paid plans start at £4.75 per LINE per month — not per user — with no contract.

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 every plan, typically within 24 hours.

Can I keep my existing phone number?

Yes — Silux Call offers free UK number porting on every plan, 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 Vapour: which UK business phone system wins in 2026?

Looking for a Vapour alternative? Silux Call and Vapour are both UK channel cloud comms. The short answer: Silux Call wins for UK SMBs on price, bundled AI, and PSTN-switch-off readiness, while Vapour (quote-only) is a known quantity if you are already embedded in it. Channel-only, no self-service, no free tier — below is the full, honest, GBP-priced breakdown for UK businesses.

Is Silux Call a better Vapour alternative?

Yes for most UK businesses: Silux Call bills in GBP with no contract, includes AI receptionist minutes and pre-ring scam-call screening the headline Vapour plan does not, and offers a 14-day free trial with no card. Channel-only, no self-service, no free tier.

Silux Call

From £4.50 a line · UK-domestic · GBP · no contract

14-day free trial (1 user, 1 DDI, 30 mins UK) — no card
Unlimited UK landline AND mobile calling from £8.95 a line
AI receptionist minutes included from £19.95 a line, not sold as a separate product
Pre-ring AI scam-call shield
Cross-tenant federation (free internal extension dialling)
Real-time call translation as live subtitles
One-click UK GDPR tooling reporter
Stripe-native reseller billing
White-label brandable mobile + desktop softphone
Microsoft Teams Direct Routing + SAML SSO

Vapour

quote-only · UK channel cloud comms

Channel-only, no self-service, no free tier
No pre-ring AI scam-call shield
No cross-tenant federation
No one-click UK GDPR compliance reporter
No Stripe-native end-customer billing
No AI receptionist included in the headline price

Pricing side-by-side (GBP)

Plan tier	Silux Call	Vapour
Free trial	14 days free, no card (1 user, 1 DDI)	Not offered
Entry paid plan	£4.50/line/month (Starter)	quote-only
Unlimited UK landline & mobile	£8.95/line/month (Plus)	See their list price
AI receptionist	Minutes included from £19.95/line (Pro); unlimited add-on £199/mo	Add-on or unavailable
Contract	None	Often 12–36 months

Switching from Vapour

Audit — we generate a free PSTN switch-off and line-by-line Vapour audit (no card).
Port — free UK landline porting on every plan. Send a recent bill and a signed letter of authority and we handle the rest.
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 Vapour — we provide the cancellation template.

Start 14-day free trial — no card Book a migration call

FAQs — Silux Call vs Vapour

Is Silux Call cheaper than Vapour?

Silux Call starts free for a 14-day trial, then £4.50 a line on Starter and £5.95 on Lite with 2,500 UK minutes. Unlimited UK landline AND mobile calling is £8.95 on Plus. Vapour list price: quote-only. Silux Call bills in GBP on rolling monthly terms with no setup fee.

Can I migrate from Vapour to Silux Call?

Yes. We offer free UK landline porting on every plan — send us a recent bill and a signed letter of authority — plus a guided Vapour migration that imports your IVR, hunt groups and working hours. Your old line keeps working throughout the port.

What does Silux Call do that Vapour doesn't?

Channel-only, no self-service, no free tier. Silux Call adds pre-ring AI scam-call screening, cross-tenant federation, a one-click UK GDPR tooling reporter, Stripe-native reseller billing, translated call transcripts, and a 14-day free trial.

Is Vapour 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 Vapour does not bundle.

Does Silux Call have a free trial versus Vapour?

Yes — 14 days, no card: one user, a UK landline from our trial pool and 30 outbound minutes. Paid plans do not carry a second trial of their own.