Business phone systems and VoIP in Chelmsford
Businesses in Chelmsford use Alltone Telecoms for VoIP phone systems, local 01245 numbers, inbound call routing and live answering. Local numbers, UK-based support and no lines to install.
Telecoms for Chelmsford businesses
Customers in Essex recognise the 01245 code. Keep it on your adverts and website, and route calls to mobiles, desk phones or our answering team as your day changes.
We set up and support everything remotely, and our services are delivered across England. Where an engineer visit is needed for broadband, leased lines or cabling, we arrange it through national partners.
Chelmsford at a glance
| Area code | 01245 |
|---|---|
| Number format | 01245 xxxxxx |
| County or area | Essex |
| Region | East of England |
| Freephone and national | 0800, 0808, 0330, 0333 |
Services in Chelmsford
Choose a service to see what is included, or ask us to quote for a complete setup.
- Business VoIP phone systems in ChelmsfordCloud phone system with apps, desk phones and a web dashboard.›
- Inbound call management in ChelmsfordRoute every incoming call to the right person, team or site.›
- Call answering service in ChelmsfordLive UK receptionists who answer in your company name.›
- Outbound calling in ChelmsfordShow your business number, record calls and stay within Ofcom rules.›
- Microsoft Teams calling in ChelmsfordMake and take real phone calls inside Microsoft Teams.›
- PSTN switch-off migration in ChelmsfordMove off analogue and ISDN lines before they are retired.›
- Business broadband in ChelmsfordFull fibre and FTTC broadband with static IPs and UK support.›
- Leased lines in ChelmsfordDedicated, symmetrical fibre with a fix-time SLA.›
A local 01245 number for your business
People are more likely to answer and return calls from a number they recognise. A 01245 number gives you a Chelmsford presence on your website, Google Business Profile and adverts, while calls ring whichever phones you choose.
Chelmsford business phone questions
Something else on your mind? Call 020 7112 8558 or send us a message and a telecoms specialist will reply.
What is the area code for Chelmsford?
The area code for Chelmsford is 01245. Local numbers are written in the format 01245 xxxxxx.
Can I get a 01245 number if my office is not in Chelmsford?
Yes. A virtual 01245 number can ring any phone in the UK, which is useful if you serve customers in Chelmsford from another base or work from home. The number should be used for genuine business in or with the Chelmsford area.
Can I keep my existing Chelmsford number if I move to VoIP?
Yes. We port 01245 numbers from your current provider to our cloud platform, so you keep your number and stop paying for the old line.
How does the PSTN switch-off affect businesses in Chelmsford?
Openreach is retiring the analogue phone network across the UK, including Essex, with a fixed date of 31 January 2027. Any business in Chelmsford still using analogue or ISDN lines, or devices that depend on them, needs to move to a digital service.
Get a quote for your Chelmsford business
Tell us how your business takes calls today and we will recommend a setup, with a clear monthly price. Most quotes are ready the same day.
- UK-based support team
- Free setup and number porting on most plans
- Monthly rolling options available
- No obligation quote
Prefer to talk? Call 020 7112 8558, Monday to Friday, 9am to 5.30pm.