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.

AI voice

When voicemail becomes a callback: how the Silux Call voicemail → AI handoff actually works

AI2026-05-045 min readBy Silux Call team

Voicemail-only workflows lose 30% of leads. We auto-callback within 30 seconds, route the second leg to the AI receptionist, and only escalate if the caller wants a human.

Voicemail is where leads go to die. A 2025 HubSpot survey put the average UK B2B voicemail-to-callback ratio at 0.7 — meaning only 70% of voicemails ever get returned, and most of those after 24 hours.

Our flow

Caller leaves a voicemail; Whisper transcribes it within seconds.
A classifier reads the transcript and decides: AI-eligible (booking, FAQ, status check) or human-only (legal, complaint, emotive).
AI-eligible voicemails trigger an outbound call within 30 seconds. The AI receptionist re-introduces, gives context, and resolves the question.
Anything the AI cannot complete is logged for human follow-up with the full transcript attached.