Hampshire · dialling code 023

Business phone systems in Southampton

Silux Call provides hosted VoIP, a cloud PBX and an AI receptionist to businesses across Southampton and the wider Hampshire. A maritime and insurance economy, and local firms get 023 area-code numbers, 24/7 UK support, and a clear path to the 31 January 2027 PSTN switch-off — Openreach has already started stop-sell across Southampton-area exchanges. Pricing is GBP-only, from a free seat to Pay-as-you-go at £0.02/min, with no long-term contract. Southampton’s shipping, insurance, marine employers are the typical customer.

Start free in SouthamptonCompare 30+ providers
Local 023 Southampton DDIs

Pick a 023 area-code DDI in seconds, or port your existing Southampton number for free on Plus and above.

Free PSTN switch-off audit

We map every analogue line on your current Southampton site and return a one-page WLR2 retirement plan, at no charge.

AI receptionist

Bundled at £199/mo flat per tenant (vs £499 standalone). Answers, books and triages 24/7 — useful for shipping firms with call peaks.

Pre-ring scam shield

Inbound HMRC, parcel and account-spoof scams are blocked before your phone rings. No other UK provider ships this.

GDPR + HIPAA

Two-party consent, one-click compliance reporter PDF, KMS recording encryption for regulated tenants.

Mobile + desktop softphones

iOS, Android, Mac, Windows, Linux and browser. Useful for Southampton's hybrid and field teams.

AI Voice features for Southampton businesses

Every Southampton plan can add Silux Voice — the AI brain that answers, transcribes, coaches and protects your calls. Built for shipping teams handling call peaks.

AI receptionist

A 24/7 AI voice agent that answers, understands and routes every call — booking, triaging and forwarding without hold music.

Smart voice answering

Natural AI-spoken greetings grounded in your own knowledge base, so callers get accurate answers instantly.

Live call transcription

Every call transcribed in real time and fully searchable, with per-call transcripts on demand.

AI call summaries

An instant LLM-written summary of each conversation, ready for your CRM the moment the call ends.

AI live coaching

Real-time prompts whispered to agents when key phrases or objections come up mid-call.

Sentiment analysis

Live caller-sentiment scoring so supervisors can step in on at-risk calls before they escalate.

Whisper, barge & monitor

Silently monitor a live call, whisper coaching to the agent, or barge in and take over.

Smart voicemail

AI voicemail that transcribes messages and emails or texts them to you within seconds.

Real-time translation

Live speech translation between caller and agent across 20+ languages.

Multi-language AI voices

40+ natural AI voices across 23+ languages, with automatic caller-language detection.

Scam-call shield

AI screening blocks HMRC, parcel and account-spoof scams before your phone even rings.

AI noise suppression

Background noise stripped from calls in real time for crystal-clear conversations.

Secure payment-by-phone

PCI-friendly card capture mid-call — the AI pauses recording automatically while details are entered.

AI outbound & power dialer

AI-driven outbound campaigns with predictive dialling, answering-machine detection and live wallboards.

Why Southampton businesses pick Silux Call

  • 1. UK-domestic — billing, support and 023 DDIs are all GBP and UK-based.
  • 2. Free seat tier — try the whole platform with one user, one DDI, no card.
  • 3. Pay-as-you-go — £0.02/min UK landline, £0.05/min UK mobile, top up from £5.
  • 4. PSTN switch-off ready — every plan ships with the porting workflow and a WLR2 migration guide tuned to Southampton exchanges.
  • 5. White-label option — Southampton IT firms can rebrand the mobile and desktop softphone for their own customers.

Industries we serve in Southampton

Southampton’s economy leans on shipping, insurance, marine. We ship vertical workflows for:

FAQs — Southampton

Can I keep my Southampton phone number?

Yes. We port Hampshire landline and mobile numbers free on Plus and above, typically within 24 hours via the PAC/STAC process. Existing 023 numbers move across without losing a call.

When does the PSTN switch off for Southampton?

BT Openreach is retiring the UK PSTN (WLR2) nationally on 31 January 2027. Many Openreach exchanges serving Southampton are already on stop-sell, so analogue lines can no longer be ordered there — migrating early avoids a rushed cut-over.

Is Silux Call regulated in the UK?

Silux Call is operated by Silux Telecom Ltd, registered in England & Wales, and UK business telephony is regulated by Ofcom. That framework is what sets your right to keep your number when you switch (via the PAC/STAC process), the rules on emergency 999/112 access from a VoIP line, and the complaints route we publish in our Complaints Code of Practice. Silux Call follows Ofcom's General Conditions of Entitlement for Southampton customers as for every other UK location.

Can I call 999 from a VoIP phone in Southampton?

Yes. Emergency calls to 999 and 112 work from Silux Call, and we hold the Southampton service address you register so emergency operators receive a location. Because a VoIP line depends on power and broadband, Ofcom expects providers to be clear about that: keep a charged mobile as a backup for a power cut, exactly as you would with any internet-based phone service.

What does business VoIP cost in Southampton?

Silux Call has a permanently free seat, Pay-as-you-go at £0.02/min UK landline, and paid plans from £6.95/user/month, all billed in GBP with no contract. There is no premium for Southampton or any other UK location.

Do I need new phones for my Southampton office?

No. Silux Call runs on the mobile, desktop and web softphone, so existing computers and smartphones work immediately. IP desk phones are optional and provisioned automatically if you want them.

Can Southampton businesses get a local 023 number?

Yes. New 023 area-code DDIs are provisioned in seconds, or you can port your existing Southampton number for free on Plus and above.

Can I get a free phone number in Southampton?

Yes. Silux Call's permanently free seat includes one free UK number — a local 023 Southampton number or an 03 number — with free voicemail-to-email and call divert, no card required. You get 30 outbound minutes a month free; add more numbers from £1/month.

Solutions for Southampton businesses

Free options for Southampton businesses

Start at £0 with no card — a free 023 Southampton number on the permanently free seat, plus free voicemail, free call forwarding and a free PSTN switch-off audit.

Resources for Southampton businesses

More UK locations

Pick another location — we serve every UK postcode.

Move your Southampton numbers to Silux Call

Free seat tier. UK GBP. 24-hour porting. PSTN switch-off ready.

Start free →