Hampshire · SO postcode area
Business phone systems for the SO postcode area
SO covers Southampton and the surrounding parts of Hampshire, on the 023 and 01962 dialling codes. We set up cloud phone systems and local numbers for businesses right across the area, from £19 per user a month.
Where the SO postcode area covers
The SO postcode area is named after Southampton and stretches across Hampshire. Towns inside it include:
- Southampton
- Eastleigh
- Winchester
- Romsey
Phone numbers here normally start 023 and 01962. Because our lines are cloud based, the postcode of your premises doesn't limit which number you can use — you can keep a 023 number if you move office within Hampshire, or add a second number for another town entirely.
Postcode boundaries and dialling code boundaries don't line up exactly, so a few addresses at the edge of SO sit on a neighbouring code. If you're not sure which applies to you, tell us your address and we'll check before you order.
What you get
Phone lines for Southampton businesses
Works on the phones you have
Calls ring your mobile, a desk phone or both — no engineer visit.
Keep your local number
We port your existing number free, so nothing you've advertised changes.
From £19 per user a month
UK landline and mobile calls included, rolling monthly, no line rental.
Ready for the switch off
Cloud lines replace PSTN and ISDN before the copper network retires.
Switching
Moving a Southampton business off old lines
Most businesses in SO are still on copper PSTN lines or an ISDN system that has to be replaced before the network is retired. Swapping to a cloud system removes line rental, keeps your existing number and gives you call routing, voicemail-to-email and a mobile app on the same plan.
Porting your number takes around 5 to 10 working days. Your old line keeps running until the port completes; on cutover day there is a short window where calls may not connect, so we agree a time with you and recommend pointing a mobile at the business in the meantime.
FAQ
SO postcode questions
Yes. Setup is remote, so we cover every SO postcode — Southampton, Eastleigh, Winchester, Romsey and everywhere between. No engineer visit is needed.
Next steps
Related pages
Southampton phone systems
Prices, numbers and switching for Southampton businesses.
Business phone systems in SouthamptonAlso see every UK postcode area we cover, how a UK business VoIP system works, what replaces an ISDN line, this month's business phone deals and full plan pricing.
Get a phone system quote for SO
Same-day quote. Free number porting and free setup on the current offer.