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.

How can we help?

Live Chat

Email Support

Book a support slot

Browse by Category

Getting Started

Phone Numbers

Billing & Payments

Security

Account Management

Troubleshooting

Popular Articles

How to set up your first phone number

Configuring call routing rules

Understanding your invoice

Setting up smart voice agents

Troubleshooting call quality issues

User roles and permissions

Frequently Asked Questions

Still need help?