Question 1

When does the UK PSTN switch off?

Accepted Answer

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.

Question 2

What is the cheapest UK business VoIP?

Accepted Answer

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.

Question 3

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

Accepted Answer

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.

Question 4

How quickly can I get a UK virtual landline number?

Accepted Answer

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.

Question 5

Can I keep my existing phone number?

Accepted Answer

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

Question 6

Does Silux Call work with Microsoft Teams?

Accepted Answer

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.

Question 7

Is Silux Call GDPR and HIPAA compliant?

Accepted Answer

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.

Question 8

How does Silux Call block scam calls?

Accepted Answer

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.

What is ISDN (Integrated Services Digital Network)?

Related terms

What is ISDN (Integrated Services Digital Network)?

Related terms

Go deeper