Hampshire is one of the most commercially active counties in the South of England. From the major port and maritime businesses in Southampton and Portsmouth, to professional services firms in Winchester, to the growing tech and defence sectors across Fareham, Eastleigh, and Basingstoke — the county’s businesses are diverse, distributed, and dependent on reliable telecoms.
VoIP is replacing traditional phone lines across Hampshire now. The BT PSTN switch-off, completing by January 2027, means that every business on a copper landline must migrate to a digital phone system. This guide covers what that looks like specifically for Hampshire businesses: which providers serve the area, what you should pay, and how to approach the migration without disruption.
The short answer:
- Every Hampshire business on a traditional landline must migrate to VoIP by January 2027
- Southampton (023), Portsmouth (023), Winchester (01962), Basingstoke (01256) numbers can all be ported to VoIP
- VoIP runs over your existing broadband — no new line installation required
- Prices start from £5.99 per user per month on rolling 28-day agreements
- Local and regional providers offer faster support than national call centres
Hampshire’s business landscape and VoIP
Hampshire businesses tend to have a few things in common: multiple sites or mobile workers (maritime, logistics, field sales), professional services where phone availability is non-negotiable, and procurement that values reliability over the cheapest option.
VoIP addresses all of these requirements directly. A business VoIP system lets your Southampton office, your Portsmouth depot, and your field sales team in Basingstoke all operate as one connected phone system — same hunt groups, same call recording, same voicemail — regardless of physical location. Calls route over the internet. Staff on the road use the same mobile app as staff at a desk.
What VoIP means for your Hampshire number
Number porting lets you move your existing Hampshire numbers to VoIP without changing them:
- 023 — Southampton and Portsmouth
- 01962 — Winchester and surrounding area
- 01256 — Basingstoke and Tadley
- 01329 — Fareham, Gosport, and Wickham
- 01730 — Petersfield and East Hampshire
- 01983 — Isle of Wight (also covered)
Your customers call the same number. Your letterheads, websites, and Google Business profiles stay accurate. The port typically takes 5–10 working days, and your existing line stays active until the transfer is complete.
VoIP providers serving Hampshire businesses
VoIPNinjas — based in Christchurch, serving Hampshire directly
VoIPNinjas is a direct VoIP provider with no reseller layer. Our team is based in Christchurch, Dorset — immediately adjacent to the Hampshire border — and we serve businesses across the county regularly.
Being a direct provider matters: when something needs fixing, we fix it ourselves. We do not raise a ticket with a wholesale platform and wait. For Hampshire businesses that depend on reliable communications, that responsiveness is the real differentiator.
Pricing:
| Plan | Monthly per user | Included |
|---|---|---|
| Ronin | £5.99 | 100 minutes UK calls |
| Samurai | £14.99 | 750 minutes UK calls |
| Shogun | £24.99 | Unlimited UK + calls to 55 countries |
All plans on 28-day rolling agreements. 14-day free trial, no card required.
National alternatives
Providers like RingCentral, Vonage, Gamma, and BT Cloud Voice all serve Hampshire. They are established platforms with reasonable feature sets. The trade-off is 24-month contracts, national call centre support with slower escalation paths, and pricing that typically runs 30–60% higher than VoIPNinjas for equivalent capability.
For Hampshire businesses with 1–50 seats, the economics strongly favour a direct regional provider.
What does VoIP cost for a Hampshire business?
A Hampshire professional services firm with 8 users, on the Samurai plan (750 minutes per user per month), pays:
£119.92 per month — no contract beyond 28 days
Equivalent capability on BT Cloud Voice: approximately £160–£200 per month on a 24-month minimum term.
Hardware is separate. If you already have compatible desk handsets (Yealink, Snom, Polycom), they typically work with VoIPNinjas with minimal reconfiguration. If you need new handsets, we can advise on the most cost-effective options for your setup.
Multi-site and mobile Hampshire businesses
One of the strongest use cases for VoIP in Hampshire is businesses with multiple locations or significant mobile workforces.
A logistics company with an office in Southampton and a depot in Fareham can run a single phone system across both sites — same extensions, same call routing, same call recording. Staff in transit use the mobile app and appear as extensions of the main system. Customers calling the main number reach whoever picks up first, regardless of where they are.
This is impossible on a traditional analogue system without significant ISDN infrastructure cost. On VoIP, it is standard — included in the base plan.
The PSTN switch-off and Hampshire exchanges
BT Openreach is progressing the digital switch-over across Hampshire. Exchanges in Southampton, Portsmouth, and Basingstoke are already undergoing migration. Exchanges in more rural parts of the county — Test Valley, the New Forest, East Hampshire — will follow.
Your existing provider is required to notify you before your exchange is switched. Do not wait for that notice. Businesses that migrate proactively choose their timing and avoid the chaos that comes from a forced last-minute switch.
With the January 2027 deadline now less than nine months away, businesses starting now have time for a thorough, well-tested migration. Those who wait until Q4 2026 will be competing with every other business in their exchange area for engineer time and porting slots.
How the migration works for a Hampshire business
1. Free consultation — we assess your current lines, handsets, broadband, and usage
2. System design — extensions, call routing, hunt groups, out-of-hours messaging
3. Number porting — your existing Hampshire number transfers (5–10 working days)
4. Go live — old line stays active until transfer completes; no gap in service
5. Ongoing support — direct access to our team, not a national call queue
For most Hampshire businesses with up to 20 seats, the entire process takes two to four weeks.
Frequently asked questions
Can I keep my Southampton 023 number on VoIP?
Yes. 023 numbers are fully portable to VoIP. The process is the same as any number port — we raise the request with your current provider, and the transfer typically takes 5–10 working days. Your old number stays active until the transfer completes.
Does VoIP work on Hampshire business broadband?
In almost all cases, yes. The practical requirement is a stable internet connection with reasonable upload speed — around 1Mbps per concurrent call. Most FTTC and FTTP business connections in Hampshire exceed this comfortably. Our 14-day trial lets you verify quality on your actual connection before committing.
We have multiple offices in Hampshire — can they share one phone system?
Yes — this is one of VoIP’s strongest advantages. Multiple sites connect over the internet to the same hosted system. Staff at different locations share extensions, transfer calls between sites, and appear as part of the same operation. No separate systems, no call charges between offices.
We use a card payment terminal on our landline — what happens to it?
PDQ terminals that use traditional phone lines need to be assessed as part of migration planning. Most modern terminal providers offer IP or GSM alternatives. We can advise on your specific terminal during the consultation.
Talk to our team about your Hampshire business
Based on the Dorset/Hampshire border. We understand local business.
Start Your Free Trial — or call us: 0330 043 2388